Mercurial > repos > shellac > sam_consensus_v3
comparison env/lib/python3.9/site-packages/cwltool/jshint/jshint.js @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
| author | shellac |
|---|---|
| date | Mon, 22 Mar 2021 18:12:50 +0000 |
| parents | |
| children |
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| -1:000000000000 | 0:4f3585e2f14b |
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| 1 /*! 2.12.0 */ | |
| 2 var JSHINT; | |
| 3 if (typeof window === 'undefined') window = {}; | |
| 4 (function () { | |
| 5 var require; | |
| 6 require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ | |
| 7 var identifierStartTable = []; | |
| 8 | |
| 9 for (var i = 0; i < 128; i++) { | |
| 10 identifierStartTable[i] = | |
| 11 i === 36 || // $ | |
| 12 i >= 65 && i <= 90 || // A-Z | |
| 13 i === 95 || // _ | |
| 14 i >= 97 && i <= 122; // a-z | |
| 15 } | |
| 16 | |
| 17 var identifierPartTable = []; | |
| 18 | |
| 19 for (var i = 0; i < 128; i++) { | |
| 20 identifierPartTable[i] = | |
| 21 identifierStartTable[i] || // $, _, A-Z, a-z | |
| 22 i >= 48 && i <= 57; // 0-9 | |
| 23 } | |
| 24 | |
| 25 module.exports = { | |
| 26 asciiIdentifierStartTable: identifierStartTable, | |
| 27 asciiIdentifierPartTable: identifierPartTable | |
| 28 }; | |
| 29 | |
| 30 },{}],2:[function(require,module,exports){ | |
| 31 module.exports = 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| |
| 32 },{}],3:[function(require,module,exports){ | |
| 33 var str = 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| |
| 34 var arr = str.split(',').map(function(code) { | |
| 35 return parseInt(code, 10); | |
| 36 }); | |
| 37 module.exports = arr; | |
| 38 },{}],4:[function(require,module,exports){ | |
| 39 var str = 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| |
| 40 var arr = str.split(',').map(function(code) { | |
| 41 return parseInt(code, 10); | |
| 42 }); | |
| 43 module.exports = arr; | |
| 44 },{}],5:[function(require,module,exports){ | |
| 45 // http://wiki.commonjs.org/wiki/Unit_Testing/1.0 | |
| 46 // | |
| 47 // THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8! | |
| 48 // | |
| 49 // Originally from narwhal.js (http://narwhaljs.org) | |
| 50 // Copyright (c) 2009 Thomas Robinson <280north.com> | |
| 51 // | |
| 52 // Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 53 // of this software and associated documentation files (the 'Software'), to | |
| 54 // deal in the Software without restriction, including without limitation the | |
| 55 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
| 56 // sell copies of the Software, and to permit persons to whom the Software is | |
| 57 // furnished to do so, subject to the following conditions: | |
| 58 // | |
| 59 // The above copyright notice and this permission notice shall be included in | |
| 60 // all copies or substantial portions of the Software. | |
| 61 // | |
| 62 // THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 63 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 64 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 65 // AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
| 66 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| 67 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 68 | |
| 69 // when used in node, this will actually load the util module we depend on | |
| 70 // versus loading the builtin util module as happens otherwise | |
| 71 // this is a bug in node module loading as far as I am concerned | |
| 72 var util = require('util/'); | |
| 73 | |
| 74 var pSlice = Array.prototype.slice; | |
| 75 var hasOwn = Object.prototype.hasOwnProperty; | |
| 76 | |
| 77 // 1. The assert module provides functions that throw | |
| 78 // AssertionError's when particular conditions are not met. The | |
| 79 // assert module must conform to the following interface. | |
| 80 | |
| 81 var assert = module.exports = ok; | |
| 82 | |
| 83 // 2. The AssertionError is defined in assert. | |
| 84 // new assert.AssertionError({ message: message, | |
| 85 // actual: actual, | |
| 86 // expected: expected }) | |
| 87 | |
| 88 assert.AssertionError = function AssertionError(options) { | |
| 89 this.name = 'AssertionError'; | |
| 90 this.actual = options.actual; | |
| 91 this.expected = options.expected; | |
| 92 this.operator = options.operator; | |
| 93 if (options.message) { | |
| 94 this.message = options.message; | |
| 95 this.generatedMessage = false; | |
| 96 } else { | |
| 97 this.message = getMessage(this); | |
| 98 this.generatedMessage = true; | |
| 99 } | |
| 100 var stackStartFunction = options.stackStartFunction || fail; | |
| 101 | |
| 102 if (Error.captureStackTrace) { | |
| 103 Error.captureStackTrace(this, stackStartFunction); | |
| 104 } | |
| 105 else { | |
| 106 // non v8 browsers so we can have a stacktrace | |
| 107 var err = new Error(); | |
| 108 if (err.stack) { | |
| 109 var out = err.stack; | |
| 110 | |
| 111 // try to strip useless frames | |
| 112 var fn_name = stackStartFunction.name; | |
| 113 var idx = out.indexOf('\n' + fn_name); | |
| 114 if (idx >= 0) { | |
| 115 // once we have located the function frame | |
| 116 // we need to strip out everything before it (and its line) | |
| 117 var next_line = out.indexOf('\n', idx + 1); | |
| 118 out = out.substring(next_line + 1); | |
| 119 } | |
| 120 | |
| 121 this.stack = out; | |
| 122 } | |
| 123 } | |
| 124 }; | |
| 125 | |
| 126 // assert.AssertionError instanceof Error | |
| 127 util.inherits(assert.AssertionError, Error); | |
| 128 | |
| 129 function replacer(key, value) { | |
| 130 if (util.isUndefined(value)) { | |
| 131 return '' + value; | |
| 132 } | |
| 133 if (util.isNumber(value) && !isFinite(value)) { | |
| 134 return value.toString(); | |
| 135 } | |
| 136 if (util.isFunction(value) || util.isRegExp(value)) { | |
| 137 return value.toString(); | |
| 138 } | |
| 139 return value; | |
| 140 } | |
| 141 | |
| 142 function truncate(s, n) { | |
| 143 if (util.isString(s)) { | |
| 144 return s.length < n ? s : s.slice(0, n); | |
| 145 } else { | |
| 146 return s; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 function getMessage(self) { | |
| 151 return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' + | |
| 152 self.operator + ' ' + | |
| 153 truncate(JSON.stringify(self.expected, replacer), 128); | |
| 154 } | |
| 155 | |
| 156 // At present only the three keys mentioned above are used and | |
| 157 // understood by the spec. Implementations or sub modules can pass | |
| 158 // other keys to the AssertionError's constructor - they will be | |
| 159 // ignored. | |
| 160 | |
| 161 // 3. All of the following functions must throw an AssertionError | |
| 162 // when a corresponding condition is not met, with a message that | |
| 163 // may be undefined if not provided. All assertion methods provide | |
| 164 // both the actual and expected values to the assertion error for | |
| 165 // display purposes. | |
| 166 | |
| 167 function fail(actual, expected, message, operator, stackStartFunction) { | |
| 168 throw new assert.AssertionError({ | |
| 169 message: message, | |
| 170 actual: actual, | |
| 171 expected: expected, | |
| 172 operator: operator, | |
| 173 stackStartFunction: stackStartFunction | |
| 174 }); | |
| 175 } | |
| 176 | |
| 177 // EXTENSION! allows for well behaved errors defined elsewhere. | |
| 178 assert.fail = fail; | |
| 179 | |
| 180 // 4. Pure assertion tests whether a value is truthy, as determined | |
| 181 // by !!guard. | |
| 182 // assert.ok(guard, message_opt); | |
| 183 // This statement is equivalent to assert.equal(true, !!guard, | |
| 184 // message_opt);. To test strictly for the value true, use | |
| 185 // assert.strictEqual(true, guard, message_opt);. | |
| 186 | |
| 187 function ok(value, message) { | |
| 188 if (!value) fail(value, true, message, '==', assert.ok); | |
| 189 } | |
| 190 assert.ok = ok; | |
| 191 | |
| 192 // 5. The equality assertion tests shallow, coercive equality with | |
| 193 // ==. | |
| 194 // assert.equal(actual, expected, message_opt); | |
| 195 | |
| 196 assert.equal = function equal(actual, expected, message) { | |
| 197 if (actual != expected) fail(actual, expected, message, '==', assert.equal); | |
| 198 }; | |
| 199 | |
| 200 // 6. The non-equality assertion tests for whether two objects are not equal | |
| 201 // with != assert.notEqual(actual, expected, message_opt); | |
| 202 | |
| 203 assert.notEqual = function notEqual(actual, expected, message) { | |
| 204 if (actual == expected) { | |
| 205 fail(actual, expected, message, '!=', assert.notEqual); | |
| 206 } | |
| 207 }; | |
| 208 | |
| 209 // 7. The equivalence assertion tests a deep equality relation. | |
| 210 // assert.deepEqual(actual, expected, message_opt); | |
| 211 | |
| 212 assert.deepEqual = function deepEqual(actual, expected, message) { | |
| 213 if (!_deepEqual(actual, expected)) { | |
| 214 fail(actual, expected, message, 'deepEqual', assert.deepEqual); | |
| 215 } | |
| 216 }; | |
| 217 | |
| 218 function _deepEqual(actual, expected) { | |
| 219 // 7.1. All identical values are equivalent, as determined by ===. | |
| 220 if (actual === expected) { | |
| 221 return true; | |
| 222 | |
| 223 } else if (util.isBuffer(actual) && util.isBuffer(expected)) { | |
| 224 if (actual.length != expected.length) return false; | |
| 225 | |
| 226 for (var i = 0; i < actual.length; i++) { | |
| 227 if (actual[i] !== expected[i]) return false; | |
| 228 } | |
| 229 | |
| 230 return true; | |
| 231 | |
| 232 // 7.2. If the expected value is a Date object, the actual value is | |
| 233 // equivalent if it is also a Date object that refers to the same time. | |
| 234 } else if (util.isDate(actual) && util.isDate(expected)) { | |
| 235 return actual.getTime() === expected.getTime(); | |
| 236 | |
| 237 // 7.3 If the expected value is a RegExp object, the actual value is | |
| 238 // equivalent if it is also a RegExp object with the same source and | |
| 239 // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`). | |
| 240 } else if (util.isRegExp(actual) && util.isRegExp(expected)) { | |
| 241 return actual.source === expected.source && | |
| 242 actual.global === expected.global && | |
| 243 actual.multiline === expected.multiline && | |
| 244 actual.lastIndex === expected.lastIndex && | |
| 245 actual.ignoreCase === expected.ignoreCase; | |
| 246 | |
| 247 // 7.4. Other pairs that do not both pass typeof value == 'object', | |
| 248 // equivalence is determined by ==. | |
| 249 } else if (!util.isObject(actual) && !util.isObject(expected)) { | |
| 250 return actual == expected; | |
| 251 | |
| 252 // 7.5 For all other Object pairs, including Array objects, equivalence is | |
| 253 // determined by having the same number of owned properties (as verified | |
| 254 // with Object.prototype.hasOwnProperty.call), the same set of keys | |
| 255 // (although not necessarily the same order), equivalent values for every | |
| 256 // corresponding key, and an identical 'prototype' property. Note: this | |
| 257 // accounts for both named and indexed properties on Arrays. | |
| 258 } else { | |
| 259 return objEquiv(actual, expected); | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 function isArguments(object) { | |
| 264 return Object.prototype.toString.call(object) == '[object Arguments]'; | |
| 265 } | |
| 266 | |
| 267 function objEquiv(a, b) { | |
| 268 if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b)) | |
| 269 return false; | |
| 270 // an identical 'prototype' property. | |
| 271 if (a.prototype !== b.prototype) return false; | |
| 272 // if one is a primitive, the other must be same | |
| 273 if (util.isPrimitive(a) || util.isPrimitive(b)) { | |
| 274 return a === b; | |
| 275 } | |
| 276 var aIsArgs = isArguments(a), | |
| 277 bIsArgs = isArguments(b); | |
| 278 if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs)) | |
| 279 return false; | |
| 280 if (aIsArgs) { | |
| 281 a = pSlice.call(a); | |
| 282 b = pSlice.call(b); | |
| 283 return _deepEqual(a, b); | |
| 284 } | |
| 285 var ka = objectKeys(a), | |
| 286 kb = objectKeys(b), | |
| 287 key, i; | |
| 288 // having the same number of owned properties (keys incorporates | |
| 289 // hasOwnProperty) | |
| 290 if (ka.length != kb.length) | |
| 291 return false; | |
| 292 //the same set of keys (although not necessarily the same order), | |
| 293 ka.sort(); | |
| 294 kb.sort(); | |
| 295 //~~~cheap key test | |
| 296 for (i = ka.length - 1; i >= 0; i--) { | |
| 297 if (ka[i] != kb[i]) | |
| 298 return false; | |
| 299 } | |
| 300 //equivalent values for every corresponding key, and | |
| 301 //~~~possibly expensive deep test | |
| 302 for (i = ka.length - 1; i >= 0; i--) { | |
| 303 key = ka[i]; | |
| 304 if (!_deepEqual(a[key], b[key])) return false; | |
| 305 } | |
| 306 return true; | |
| 307 } | |
| 308 | |
| 309 // 8. The non-equivalence assertion tests for any deep inequality. | |
| 310 // assert.notDeepEqual(actual, expected, message_opt); | |
| 311 | |
| 312 assert.notDeepEqual = function notDeepEqual(actual, expected, message) { | |
| 313 if (_deepEqual(actual, expected)) { | |
| 314 fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); | |
| 315 } | |
| 316 }; | |
| 317 | |
| 318 // 9. The strict equality assertion tests strict equality, as determined by ===. | |
| 319 // assert.strictEqual(actual, expected, message_opt); | |
| 320 | |
| 321 assert.strictEqual = function strictEqual(actual, expected, message) { | |
| 322 if (actual !== expected) { | |
| 323 fail(actual, expected, message, '===', assert.strictEqual); | |
| 324 } | |
| 325 }; | |
| 326 | |
| 327 // 10. The strict non-equality assertion tests for strict inequality, as | |
| 328 // determined by !==. assert.notStrictEqual(actual, expected, message_opt); | |
| 329 | |
| 330 assert.notStrictEqual = function notStrictEqual(actual, expected, message) { | |
| 331 if (actual === expected) { | |
| 332 fail(actual, expected, message, '!==', assert.notStrictEqual); | |
| 333 } | |
| 334 }; | |
| 335 | |
| 336 function expectedException(actual, expected) { | |
| 337 if (!actual || !expected) { | |
| 338 return false; | |
| 339 } | |
| 340 | |
| 341 if (Object.prototype.toString.call(expected) == '[object RegExp]') { | |
| 342 return expected.test(actual); | |
| 343 } else if (actual instanceof expected) { | |
| 344 return true; | |
| 345 } else if (expected.call({}, actual) === true) { | |
| 346 return true; | |
| 347 } | |
| 348 | |
| 349 return false; | |
| 350 } | |
| 351 | |
| 352 function _throws(shouldThrow, block, expected, message) { | |
| 353 var actual; | |
| 354 | |
| 355 if (util.isString(expected)) { | |
| 356 message = expected; | |
| 357 expected = null; | |
| 358 } | |
| 359 | |
| 360 try { | |
| 361 block(); | |
| 362 } catch (e) { | |
| 363 actual = e; | |
| 364 } | |
| 365 | |
| 366 message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + | |
| 367 (message ? ' ' + message : '.'); | |
| 368 | |
| 369 if (shouldThrow && !actual) { | |
| 370 fail(actual, expected, 'Missing expected exception' + message); | |
| 371 } | |
| 372 | |
| 373 if (!shouldThrow && expectedException(actual, expected)) { | |
| 374 fail(actual, expected, 'Got unwanted exception' + message); | |
| 375 } | |
| 376 | |
| 377 if ((shouldThrow && actual && expected && | |
| 378 !expectedException(actual, expected)) || (!shouldThrow && actual)) { | |
| 379 throw actual; | |
| 380 } | |
| 381 } | |
| 382 | |
| 383 // 11. Expected to throw an error: | |
| 384 // assert.throws(block, Error_opt, message_opt); | |
| 385 | |
| 386 assert.throws = function(block, /*optional*/error, /*optional*/message) { | |
| 387 _throws.apply(this, [true].concat(pSlice.call(arguments))); | |
| 388 }; | |
| 389 | |
| 390 // EXTENSION! This is annoying to write outside this module. | |
| 391 assert.doesNotThrow = function(block, /*optional*/message) { | |
| 392 _throws.apply(this, [false].concat(pSlice.call(arguments))); | |
| 393 }; | |
| 394 | |
| 395 assert.ifError = function(err) { if (err) {throw err;}}; | |
| 396 | |
| 397 var objectKeys = Object.keys || function (obj) { | |
| 398 var keys = []; | |
| 399 for (var key in obj) { | |
| 400 if (hasOwn.call(obj, key)) keys.push(key); | |
| 401 } | |
| 402 return keys; | |
| 403 }; | |
| 404 | |
| 405 },{"util/":8}],6:[function(require,module,exports){ | |
| 406 if (typeof Object.create === 'function') { | |
| 407 // implementation from standard node.js 'util' module | |
| 408 module.exports = function inherits(ctor, superCtor) { | |
| 409 ctor.super_ = superCtor | |
| 410 ctor.prototype = Object.create(superCtor.prototype, { | |
| 411 constructor: { | |
| 412 value: ctor, | |
| 413 enumerable: false, | |
| 414 writable: true, | |
| 415 configurable: true | |
| 416 } | |
| 417 }); | |
| 418 }; | |
| 419 } else { | |
| 420 // old school shim for old browsers | |
| 421 module.exports = function inherits(ctor, superCtor) { | |
| 422 ctor.super_ = superCtor | |
| 423 var TempCtor = function () {} | |
| 424 TempCtor.prototype = superCtor.prototype | |
| 425 ctor.prototype = new TempCtor() | |
| 426 ctor.prototype.constructor = ctor | |
| 427 } | |
| 428 } | |
| 429 | |
| 430 },{}],7:[function(require,module,exports){ | |
| 431 module.exports = function isBuffer(arg) { | |
| 432 return arg && typeof arg === 'object' | |
| 433 && typeof arg.copy === 'function' | |
| 434 && typeof arg.fill === 'function' | |
| 435 && typeof arg.readUInt8 === 'function'; | |
| 436 } | |
| 437 },{}],8:[function(require,module,exports){ | |
| 438 (function (process,global){ | |
| 439 // Copyright Joyent, Inc. and other Node contributors. | |
| 440 // | |
| 441 // Permission is hereby granted, free of charge, to any person obtaining a | |
| 442 // copy of this software and associated documentation files (the | |
| 443 // "Software"), to deal in the Software without restriction, including | |
| 444 // without limitation the rights to use, copy, modify, merge, publish, | |
| 445 // distribute, sublicense, and/or sell copies of the Software, and to permit | |
| 446 // persons to whom the Software is furnished to do so, subject to the | |
| 447 // following conditions: | |
| 448 // | |
| 449 // The above copyright notice and this permission notice shall be included | |
| 450 // in all copies or substantial portions of the Software. | |
| 451 // | |
| 452 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
| 453 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 454 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
| 455 // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
| 456 // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
| 457 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
| 458 // USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 459 | |
| 460 var formatRegExp = /%[sdj%]/g; | |
| 461 exports.format = function(f) { | |
| 462 if (!isString(f)) { | |
| 463 var objects = []; | |
| 464 for (var i = 0; i < arguments.length; i++) { | |
| 465 objects.push(inspect(arguments[i])); | |
| 466 } | |
| 467 return objects.join(' '); | |
| 468 } | |
| 469 | |
| 470 var i = 1; | |
| 471 var args = arguments; | |
| 472 var len = args.length; | |
| 473 var str = String(f).replace(formatRegExp, function(x) { | |
| 474 if (x === '%%') return '%'; | |
| 475 if (i >= len) return x; | |
| 476 switch (x) { | |
| 477 case '%s': return String(args[i++]); | |
| 478 case '%d': return Number(args[i++]); | |
| 479 case '%j': | |
| 480 try { | |
| 481 return JSON.stringify(args[i++]); | |
| 482 } catch (_) { | |
| 483 return '[Circular]'; | |
| 484 } | |
| 485 default: | |
| 486 return x; | |
| 487 } | |
| 488 }); | |
| 489 for (var x = args[i]; i < len; x = args[++i]) { | |
| 490 if (isNull(x) || !isObject(x)) { | |
| 491 str += ' ' + x; | |
| 492 } else { | |
| 493 str += ' ' + inspect(x); | |
| 494 } | |
| 495 } | |
| 496 return str; | |
| 497 }; | |
| 498 | |
| 499 | |
| 500 // Mark that a method should not be used. | |
| 501 // Returns a modified function which warns once by default. | |
| 502 // If --no-deprecation is set, then it is a no-op. | |
| 503 exports.deprecate = function(fn, msg) { | |
| 504 // Allow for deprecating things in the process of starting up. | |
| 505 if (isUndefined(global.process)) { | |
| 506 return function() { | |
| 507 return exports.deprecate(fn, msg).apply(this, arguments); | |
| 508 }; | |
| 509 } | |
| 510 | |
| 511 if (process.noDeprecation === true) { | |
| 512 return fn; | |
| 513 } | |
| 514 | |
| 515 var warned = false; | |
| 516 function deprecated() { | |
| 517 if (!warned) { | |
| 518 if (process.throwDeprecation) { | |
| 519 throw new Error(msg); | |
| 520 } else if (process.traceDeprecation) { | |
| 521 console.trace(msg); | |
| 522 } else { | |
| 523 console.error(msg); | |
| 524 } | |
| 525 warned = true; | |
| 526 } | |
| 527 return fn.apply(this, arguments); | |
| 528 } | |
| 529 | |
| 530 return deprecated; | |
| 531 }; | |
| 532 | |
| 533 | |
| 534 var debugs = {}; | |
| 535 var debugEnviron; | |
| 536 exports.debuglog = function(set) { | |
| 537 if (isUndefined(debugEnviron)) | |
| 538 debugEnviron = process.env.NODE_DEBUG || ''; | |
| 539 set = set.toUpperCase(); | |
| 540 if (!debugs[set]) { | |
| 541 if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { | |
| 542 var pid = process.pid; | |
| 543 debugs[set] = function() { | |
| 544 var msg = exports.format.apply(exports, arguments); | |
| 545 console.error('%s %d: %s', set, pid, msg); | |
| 546 }; | |
| 547 } else { | |
| 548 debugs[set] = function() {}; | |
| 549 } | |
| 550 } | |
| 551 return debugs[set]; | |
| 552 }; | |
| 553 | |
| 554 | |
| 555 /** | |
| 556 * Echos the value of a value. Trys to print the value out | |
| 557 * in the best way possible given the different types. | |
| 558 * | |
| 559 * @param {Object} obj The object to print out. | |
| 560 * @param {Object} opts Optional options object that alters the output. | |
| 561 */ | |
| 562 /* legacy: obj, showHidden, depth, colors*/ | |
| 563 function inspect(obj, opts) { | |
| 564 // default options | |
| 565 var ctx = { | |
| 566 seen: [], | |
| 567 stylize: stylizeNoColor | |
| 568 }; | |
| 569 // legacy... | |
| 570 if (arguments.length >= 3) ctx.depth = arguments[2]; | |
| 571 if (arguments.length >= 4) ctx.colors = arguments[3]; | |
| 572 if (isBoolean(opts)) { | |
| 573 // legacy... | |
| 574 ctx.showHidden = opts; | |
| 575 } else if (opts) { | |
| 576 // got an "options" object | |
| 577 exports._extend(ctx, opts); | |
| 578 } | |
| 579 // set default options | |
| 580 if (isUndefined(ctx.showHidden)) ctx.showHidden = false; | |
| 581 if (isUndefined(ctx.depth)) ctx.depth = 2; | |
| 582 if (isUndefined(ctx.colors)) ctx.colors = false; | |
| 583 if (isUndefined(ctx.customInspect)) ctx.customInspect = true; | |
| 584 if (ctx.colors) ctx.stylize = stylizeWithColor; | |
| 585 return formatValue(ctx, obj, ctx.depth); | |
| 586 } | |
| 587 exports.inspect = inspect; | |
| 588 | |
| 589 | |
| 590 // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics | |
| 591 inspect.colors = { | |
| 592 'bold' : [1, 22], | |
| 593 'italic' : [3, 23], | |
| 594 'underline' : [4, 24], | |
| 595 'inverse' : [7, 27], | |
| 596 'white' : [37, 39], | |
| 597 'grey' : [90, 39], | |
| 598 'black' : [30, 39], | |
| 599 'blue' : [34, 39], | |
| 600 'cyan' : [36, 39], | |
| 601 'green' : [32, 39], | |
| 602 'magenta' : [35, 39], | |
| 603 'red' : [31, 39], | |
| 604 'yellow' : [33, 39] | |
| 605 }; | |
| 606 | |
| 607 // Don't use 'blue' not visible on cmd.exe | |
| 608 inspect.styles = { | |
| 609 'special': 'cyan', | |
| 610 'number': 'yellow', | |
| 611 'boolean': 'yellow', | |
| 612 'undefined': 'grey', | |
| 613 'null': 'bold', | |
| 614 'string': 'green', | |
| 615 'date': 'magenta', | |
| 616 // "name": intentionally not styling | |
| 617 'regexp': 'red' | |
| 618 }; | |
| 619 | |
| 620 | |
| 621 function stylizeWithColor(str, styleType) { | |
| 622 var style = inspect.styles[styleType]; | |
| 623 | |
| 624 if (style) { | |
| 625 return '\u001b[' + inspect.colors[style][0] + 'm' + str + | |
| 626 '\u001b[' + inspect.colors[style][1] + 'm'; | |
| 627 } else { | |
| 628 return str; | |
| 629 } | |
| 630 } | |
| 631 | |
| 632 | |
| 633 function stylizeNoColor(str, styleType) { | |
| 634 return str; | |
| 635 } | |
| 636 | |
| 637 | |
| 638 function arrayToHash(array) { | |
| 639 var hash = {}; | |
| 640 | |
| 641 array.forEach(function(val, idx) { | |
| 642 hash[val] = true; | |
| 643 }); | |
| 644 | |
| 645 return hash; | |
| 646 } | |
| 647 | |
| 648 | |
| 649 function formatValue(ctx, value, recurseTimes) { | |
| 650 // Provide a hook for user-specified inspect functions. | |
| 651 // Check that value is an object with an inspect function on it | |
| 652 if (ctx.customInspect && | |
| 653 value && | |
| 654 isFunction(value.inspect) && | |
| 655 // Filter out the util module, it's inspect function is special | |
| 656 value.inspect !== exports.inspect && | |
| 657 // Also filter out any prototype objects using the circular check. | |
| 658 !(value.constructor && value.constructor.prototype === value)) { | |
| 659 var ret = value.inspect(recurseTimes, ctx); | |
| 660 if (!isString(ret)) { | |
| 661 ret = formatValue(ctx, ret, recurseTimes); | |
| 662 } | |
| 663 return ret; | |
| 664 } | |
| 665 | |
| 666 // Primitive types cannot have properties | |
| 667 var primitive = formatPrimitive(ctx, value); | |
| 668 if (primitive) { | |
| 669 return primitive; | |
| 670 } | |
| 671 | |
| 672 // Look up the keys of the object. | |
| 673 var keys = Object.keys(value); | |
| 674 var visibleKeys = arrayToHash(keys); | |
| 675 | |
| 676 if (ctx.showHidden) { | |
| 677 keys = Object.getOwnPropertyNames(value); | |
| 678 } | |
| 679 | |
| 680 // IE doesn't make error fields non-enumerable | |
| 681 // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx | |
| 682 if (isError(value) | |
| 683 && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { | |
| 684 return formatError(value); | |
| 685 } | |
| 686 | |
| 687 // Some type of object without properties can be shortcutted. | |
| 688 if (keys.length === 0) { | |
| 689 if (isFunction(value)) { | |
| 690 var name = value.name ? ': ' + value.name : ''; | |
| 691 return ctx.stylize('[Function' + name + ']', 'special'); | |
| 692 } | |
| 693 if (isRegExp(value)) { | |
| 694 return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); | |
| 695 } | |
| 696 if (isDate(value)) { | |
| 697 return ctx.stylize(Date.prototype.toString.call(value), 'date'); | |
| 698 } | |
| 699 if (isError(value)) { | |
| 700 return formatError(value); | |
| 701 } | |
| 702 } | |
| 703 | |
| 704 var base = '', array = false, braces = ['{', '}']; | |
| 705 | |
| 706 // Make Array say that they are Array | |
| 707 if (isArray(value)) { | |
| 708 array = true; | |
| 709 braces = ['[', ']']; | |
| 710 } | |
| 711 | |
| 712 // Make functions say that they are functions | |
| 713 if (isFunction(value)) { | |
| 714 var n = value.name ? ': ' + value.name : ''; | |
| 715 base = ' [Function' + n + ']'; | |
| 716 } | |
| 717 | |
| 718 // Make RegExps say that they are RegExps | |
| 719 if (isRegExp(value)) { | |
| 720 base = ' ' + RegExp.prototype.toString.call(value); | |
| 721 } | |
| 722 | |
| 723 // Make dates with properties first say the date | |
| 724 if (isDate(value)) { | |
| 725 base = ' ' + Date.prototype.toUTCString.call(value); | |
| 726 } | |
| 727 | |
| 728 // Make error with message first say the error | |
| 729 if (isError(value)) { | |
| 730 base = ' ' + formatError(value); | |
| 731 } | |
| 732 | |
| 733 if (keys.length === 0 && (!array || value.length == 0)) { | |
| 734 return braces[0] + base + braces[1]; | |
| 735 } | |
| 736 | |
| 737 if (recurseTimes < 0) { | |
| 738 if (isRegExp(value)) { | |
| 739 return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); | |
| 740 } else { | |
| 741 return ctx.stylize('[Object]', 'special'); | |
| 742 } | |
| 743 } | |
| 744 | |
| 745 ctx.seen.push(value); | |
| 746 | |
| 747 var output; | |
| 748 if (array) { | |
| 749 output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); | |
| 750 } else { | |
| 751 output = keys.map(function(key) { | |
| 752 return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); | |
| 753 }); | |
| 754 } | |
| 755 | |
| 756 ctx.seen.pop(); | |
| 757 | |
| 758 return reduceToSingleString(output, base, braces); | |
| 759 } | |
| 760 | |
| 761 | |
| 762 function formatPrimitive(ctx, value) { | |
| 763 if (isUndefined(value)) | |
| 764 return ctx.stylize('undefined', 'undefined'); | |
| 765 if (isString(value)) { | |
| 766 var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') | |
| 767 .replace(/'/g, "\\'") | |
| 768 .replace(/\\"/g, '"') + '\''; | |
| 769 return ctx.stylize(simple, 'string'); | |
| 770 } | |
| 771 if (isNumber(value)) | |
| 772 return ctx.stylize('' + value, 'number'); | |
| 773 if (isBoolean(value)) | |
| 774 return ctx.stylize('' + value, 'boolean'); | |
| 775 // For some reason typeof null is "object", so special case here. | |
| 776 if (isNull(value)) | |
| 777 return ctx.stylize('null', 'null'); | |
| 778 } | |
| 779 | |
| 780 | |
| 781 function formatError(value) { | |
| 782 return '[' + Error.prototype.toString.call(value) + ']'; | |
| 783 } | |
| 784 | |
| 785 | |
| 786 function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { | |
| 787 var output = []; | |
| 788 for (var i = 0, l = value.length; i < l; ++i) { | |
| 789 if (hasOwnProperty(value, String(i))) { | |
| 790 output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, | |
| 791 String(i), true)); | |
| 792 } else { | |
| 793 output.push(''); | |
| 794 } | |
| 795 } | |
| 796 keys.forEach(function(key) { | |
| 797 if (!key.match(/^\d+$/)) { | |
| 798 output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, | |
| 799 key, true)); | |
| 800 } | |
| 801 }); | |
| 802 return output; | |
| 803 } | |
| 804 | |
| 805 | |
| 806 function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { | |
| 807 var name, str, desc; | |
| 808 desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; | |
| 809 if (desc.get) { | |
| 810 if (desc.set) { | |
| 811 str = ctx.stylize('[Getter/Setter]', 'special'); | |
| 812 } else { | |
| 813 str = ctx.stylize('[Getter]', 'special'); | |
| 814 } | |
| 815 } else { | |
| 816 if (desc.set) { | |
| 817 str = ctx.stylize('[Setter]', 'special'); | |
| 818 } | |
| 819 } | |
| 820 if (!hasOwnProperty(visibleKeys, key)) { | |
| 821 name = '[' + key + ']'; | |
| 822 } | |
| 823 if (!str) { | |
| 824 if (ctx.seen.indexOf(desc.value) < 0) { | |
| 825 if (isNull(recurseTimes)) { | |
| 826 str = formatValue(ctx, desc.value, null); | |
| 827 } else { | |
| 828 str = formatValue(ctx, desc.value, recurseTimes - 1); | |
| 829 } | |
| 830 if (str.indexOf('\n') > -1) { | |
| 831 if (array) { | |
| 832 str = str.split('\n').map(function(line) { | |
| 833 return ' ' + line; | |
| 834 }).join('\n').substr(2); | |
| 835 } else { | |
| 836 str = '\n' + str.split('\n').map(function(line) { | |
| 837 return ' ' + line; | |
| 838 }).join('\n'); | |
| 839 } | |
| 840 } | |
| 841 } else { | |
| 842 str = ctx.stylize('[Circular]', 'special'); | |
| 843 } | |
| 844 } | |
| 845 if (isUndefined(name)) { | |
| 846 if (array && key.match(/^\d+$/)) { | |
| 847 return str; | |
| 848 } | |
| 849 name = JSON.stringify('' + key); | |
| 850 if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { | |
| 851 name = name.substr(1, name.length - 2); | |
| 852 name = ctx.stylize(name, 'name'); | |
| 853 } else { | |
| 854 name = name.replace(/'/g, "\\'") | |
| 855 .replace(/\\"/g, '"') | |
| 856 .replace(/(^"|"$)/g, "'"); | |
| 857 name = ctx.stylize(name, 'string'); | |
| 858 } | |
| 859 } | |
| 860 | |
| 861 return name + ': ' + str; | |
| 862 } | |
| 863 | |
| 864 | |
| 865 function reduceToSingleString(output, base, braces) { | |
| 866 var numLinesEst = 0; | |
| 867 var length = output.reduce(function(prev, cur) { | |
| 868 numLinesEst++; | |
| 869 if (cur.indexOf('\n') >= 0) numLinesEst++; | |
| 870 return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; | |
| 871 }, 0); | |
| 872 | |
| 873 if (length > 60) { | |
| 874 return braces[0] + | |
| 875 (base === '' ? '' : base + '\n ') + | |
| 876 ' ' + | |
| 877 output.join(',\n ') + | |
| 878 ' ' + | |
| 879 braces[1]; | |
| 880 } | |
| 881 | |
| 882 return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; | |
| 883 } | |
| 884 | |
| 885 | |
| 886 // NOTE: These type checking functions intentionally don't use `instanceof` | |
| 887 // because it is fragile and can be easily faked with `Object.create()`. | |
| 888 function isArray(ar) { | |
| 889 return Array.isArray(ar); | |
| 890 } | |
| 891 exports.isArray = isArray; | |
| 892 | |
| 893 function isBoolean(arg) { | |
| 894 return typeof arg === 'boolean'; | |
| 895 } | |
| 896 exports.isBoolean = isBoolean; | |
| 897 | |
| 898 function isNull(arg) { | |
| 899 return arg === null; | |
| 900 } | |
| 901 exports.isNull = isNull; | |
| 902 | |
| 903 function isNullOrUndefined(arg) { | |
| 904 return arg == null; | |
| 905 } | |
| 906 exports.isNullOrUndefined = isNullOrUndefined; | |
| 907 | |
| 908 function isNumber(arg) { | |
| 909 return typeof arg === 'number'; | |
| 910 } | |
| 911 exports.isNumber = isNumber; | |
| 912 | |
| 913 function isString(arg) { | |
| 914 return typeof arg === 'string'; | |
| 915 } | |
| 916 exports.isString = isString; | |
| 917 | |
| 918 function isSymbol(arg) { | |
| 919 return typeof arg === 'symbol'; | |
| 920 } | |
| 921 exports.isSymbol = isSymbol; | |
| 922 | |
| 923 function isUndefined(arg) { | |
| 924 return arg === void 0; | |
| 925 } | |
| 926 exports.isUndefined = isUndefined; | |
| 927 | |
| 928 function isRegExp(re) { | |
| 929 return isObject(re) && objectToString(re) === '[object RegExp]'; | |
| 930 } | |
| 931 exports.isRegExp = isRegExp; | |
| 932 | |
| 933 function isObject(arg) { | |
| 934 return typeof arg === 'object' && arg !== null; | |
| 935 } | |
| 936 exports.isObject = isObject; | |
| 937 | |
| 938 function isDate(d) { | |
| 939 return isObject(d) && objectToString(d) === '[object Date]'; | |
| 940 } | |
| 941 exports.isDate = isDate; | |
| 942 | |
| 943 function isError(e) { | |
| 944 return isObject(e) && | |
| 945 (objectToString(e) === '[object Error]' || e instanceof Error); | |
| 946 } | |
| 947 exports.isError = isError; | |
| 948 | |
| 949 function isFunction(arg) { | |
| 950 return typeof arg === 'function'; | |
| 951 } | |
| 952 exports.isFunction = isFunction; | |
| 953 | |
| 954 function isPrimitive(arg) { | |
| 955 return arg === null || | |
| 956 typeof arg === 'boolean' || | |
| 957 typeof arg === 'number' || | |
| 958 typeof arg === 'string' || | |
| 959 typeof arg === 'symbol' || // ES6 symbol | |
| 960 typeof arg === 'undefined'; | |
| 961 } | |
| 962 exports.isPrimitive = isPrimitive; | |
| 963 | |
| 964 exports.isBuffer = require('./support/isBuffer'); | |
| 965 | |
| 966 function objectToString(o) { | |
| 967 return Object.prototype.toString.call(o); | |
| 968 } | |
| 969 | |
| 970 | |
| 971 function pad(n) { | |
| 972 return n < 10 ? '0' + n.toString(10) : n.toString(10); | |
| 973 } | |
| 974 | |
| 975 | |
| 976 var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', | |
| 977 'Oct', 'Nov', 'Dec']; | |
| 978 | |
| 979 // 26 Feb 16:19:34 | |
| 980 function timestamp() { | |
| 981 var d = new Date(); | |
| 982 var time = [pad(d.getHours()), | |
| 983 pad(d.getMinutes()), | |
| 984 pad(d.getSeconds())].join(':'); | |
| 985 return [d.getDate(), months[d.getMonth()], time].join(' '); | |
| 986 } | |
| 987 | |
| 988 | |
| 989 // log is just a thin wrapper to console.log that prepends a timestamp | |
| 990 exports.log = function() { | |
| 991 console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); | |
| 992 }; | |
| 993 | |
| 994 | |
| 995 /** | |
| 996 * Inherit the prototype methods from one constructor into another. | |
| 997 * | |
| 998 * The Function.prototype.inherits from lang.js rewritten as a standalone | |
| 999 * function (not on Function.prototype). NOTE: If this file is to be loaded | |
| 1000 * during bootstrapping this function needs to be rewritten using some native | |
| 1001 * functions as prototype setup using normal JavaScript does not work as | |
| 1002 * expected during bootstrapping (see mirror.js in r114903). | |
| 1003 * | |
| 1004 * @param {function} ctor Constructor function which needs to inherit the | |
| 1005 * prototype. | |
| 1006 * @param {function} superCtor Constructor function to inherit prototype from. | |
| 1007 */ | |
| 1008 exports.inherits = require('inherits'); | |
| 1009 | |
| 1010 exports._extend = function(origin, add) { | |
| 1011 // Don't do anything if add isn't an object | |
| 1012 if (!add || !isObject(add)) return origin; | |
| 1013 | |
| 1014 var keys = Object.keys(add); | |
| 1015 var i = keys.length; | |
| 1016 while (i--) { | |
| 1017 origin[keys[i]] = add[keys[i]]; | |
| 1018 } | |
| 1019 return origin; | |
| 1020 }; | |
| 1021 | |
| 1022 function hasOwnProperty(obj, prop) { | |
| 1023 return Object.prototype.hasOwnProperty.call(obj, prop); | |
| 1024 } | |
| 1025 | |
| 1026 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
| 1027 },{"./support/isBuffer":7,"_process":11,"inherits":6}],9:[function(require,module,exports){ | |
| 1028 // Copyright Joyent, Inc. and other Node contributors. | |
| 1029 // | |
| 1030 // Permission is hereby granted, free of charge, to any person obtaining a | |
| 1031 // copy of this software and associated documentation files (the | |
| 1032 // "Software"), to deal in the Software without restriction, including | |
| 1033 // without limitation the rights to use, copy, modify, merge, publish, | |
| 1034 // distribute, sublicense, and/or sell copies of the Software, and to permit | |
| 1035 // persons to whom the Software is furnished to do so, subject to the | |
| 1036 // following conditions: | |
| 1037 // | |
| 1038 // The above copyright notice and this permission notice shall be included | |
| 1039 // in all copies or substantial portions of the Software. | |
| 1040 // | |
| 1041 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
| 1042 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 1043 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
| 1044 // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
| 1045 // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
| 1046 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
| 1047 // USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 1048 | |
| 1049 function EventEmitter() { | |
| 1050 this._events = this._events || {}; | |
| 1051 this._maxListeners = this._maxListeners || undefined; | |
| 1052 } | |
| 1053 module.exports = EventEmitter; | |
| 1054 | |
| 1055 // Backwards-compat with node 0.10.x | |
| 1056 EventEmitter.EventEmitter = EventEmitter; | |
| 1057 | |
| 1058 EventEmitter.prototype._events = undefined; | |
| 1059 EventEmitter.prototype._maxListeners = undefined; | |
| 1060 | |
| 1061 // By default EventEmitters will print a warning if more than 10 listeners are | |
| 1062 // added to it. This is a useful default which helps finding memory leaks. | |
| 1063 EventEmitter.defaultMaxListeners = 10; | |
| 1064 | |
| 1065 // Obviously not all Emitters should be limited to 10. This function allows | |
| 1066 // that to be increased. Set to zero for unlimited. | |
| 1067 EventEmitter.prototype.setMaxListeners = function(n) { | |
| 1068 if (!isNumber(n) || n < 0 || isNaN(n)) | |
| 1069 throw TypeError('n must be a positive number'); | |
| 1070 this._maxListeners = n; | |
| 1071 return this; | |
| 1072 }; | |
| 1073 | |
| 1074 EventEmitter.prototype.emit = function(type) { | |
| 1075 var er, handler, len, args, i, listeners; | |
| 1076 | |
| 1077 if (!this._events) | |
| 1078 this._events = {}; | |
| 1079 | |
| 1080 // If there is no 'error' event listener then throw. | |
| 1081 if (type === 'error') { | |
| 1082 if (!this._events.error || | |
| 1083 (isObject(this._events.error) && !this._events.error.length)) { | |
| 1084 er = arguments[1]; | |
| 1085 if (er instanceof Error) { | |
| 1086 throw er; // Unhandled 'error' event | |
| 1087 } | |
| 1088 throw TypeError('Uncaught, unspecified "error" event.'); | |
| 1089 } | |
| 1090 } | |
| 1091 | |
| 1092 handler = this._events[type]; | |
| 1093 | |
| 1094 if (isUndefined(handler)) | |
| 1095 return false; | |
| 1096 | |
| 1097 if (isFunction(handler)) { | |
| 1098 switch (arguments.length) { | |
| 1099 // fast cases | |
| 1100 case 1: | |
| 1101 handler.call(this); | |
| 1102 break; | |
| 1103 case 2: | |
| 1104 handler.call(this, arguments[1]); | |
| 1105 break; | |
| 1106 case 3: | |
| 1107 handler.call(this, arguments[1], arguments[2]); | |
| 1108 break; | |
| 1109 // slower | |
| 1110 default: | |
| 1111 len = arguments.length; | |
| 1112 args = new Array(len - 1); | |
| 1113 for (i = 1; i < len; i++) | |
| 1114 args[i - 1] = arguments[i]; | |
| 1115 handler.apply(this, args); | |
| 1116 } | |
| 1117 } else if (isObject(handler)) { | |
| 1118 len = arguments.length; | |
| 1119 args = new Array(len - 1); | |
| 1120 for (i = 1; i < len; i++) | |
| 1121 args[i - 1] = arguments[i]; | |
| 1122 | |
| 1123 listeners = handler.slice(); | |
| 1124 len = listeners.length; | |
| 1125 for (i = 0; i < len; i++) | |
| 1126 listeners[i].apply(this, args); | |
| 1127 } | |
| 1128 | |
| 1129 return true; | |
| 1130 }; | |
| 1131 | |
| 1132 EventEmitter.prototype.addListener = function(type, listener) { | |
| 1133 var m; | |
| 1134 | |
| 1135 if (!isFunction(listener)) | |
| 1136 throw TypeError('listener must be a function'); | |
| 1137 | |
| 1138 if (!this._events) | |
| 1139 this._events = {}; | |
| 1140 | |
| 1141 // To avoid recursion in the case that type === "newListener"! Before | |
| 1142 // adding it to the listeners, first emit "newListener". | |
| 1143 if (this._events.newListener) | |
| 1144 this.emit('newListener', type, | |
| 1145 isFunction(listener.listener) ? | |
| 1146 listener.listener : listener); | |
| 1147 | |
| 1148 if (!this._events[type]) | |
| 1149 // Optimize the case of one listener. Don't need the extra array object. | |
| 1150 this._events[type] = listener; | |
| 1151 else if (isObject(this._events[type])) | |
| 1152 // If we've already got an array, just append. | |
| 1153 this._events[type].push(listener); | |
| 1154 else | |
| 1155 // Adding the second element, need to change to array. | |
| 1156 this._events[type] = [this._events[type], listener]; | |
| 1157 | |
| 1158 // Check for listener leak | |
| 1159 if (isObject(this._events[type]) && !this._events[type].warned) { | |
| 1160 var m; | |
| 1161 if (!isUndefined(this._maxListeners)) { | |
| 1162 m = this._maxListeners; | |
| 1163 } else { | |
| 1164 m = EventEmitter.defaultMaxListeners; | |
| 1165 } | |
| 1166 | |
| 1167 if (m && m > 0 && this._events[type].length > m) { | |
| 1168 this._events[type].warned = true; | |
| 1169 console.error('(node) warning: possible EventEmitter memory ' + | |
| 1170 'leak detected. %d listeners added. ' + | |
| 1171 'Use emitter.setMaxListeners() to increase limit.', | |
| 1172 this._events[type].length); | |
| 1173 if (typeof console.trace === 'function') { | |
| 1174 // not supported in IE 10 | |
| 1175 console.trace(); | |
| 1176 } | |
| 1177 } | |
| 1178 } | |
| 1179 | |
| 1180 return this; | |
| 1181 }; | |
| 1182 | |
| 1183 EventEmitter.prototype.on = EventEmitter.prototype.addListener; | |
| 1184 | |
| 1185 EventEmitter.prototype.once = function(type, listener) { | |
| 1186 if (!isFunction(listener)) | |
| 1187 throw TypeError('listener must be a function'); | |
| 1188 | |
| 1189 var fired = false; | |
| 1190 | |
| 1191 function g() { | |
| 1192 this.removeListener(type, g); | |
| 1193 | |
| 1194 if (!fired) { | |
| 1195 fired = true; | |
| 1196 listener.apply(this, arguments); | |
| 1197 } | |
| 1198 } | |
| 1199 | |
| 1200 g.listener = listener; | |
| 1201 this.on(type, g); | |
| 1202 | |
| 1203 return this; | |
| 1204 }; | |
| 1205 | |
| 1206 // emits a 'removeListener' event iff the listener was removed | |
| 1207 EventEmitter.prototype.removeListener = function(type, listener) { | |
| 1208 var list, position, length, i; | |
| 1209 | |
| 1210 if (!isFunction(listener)) | |
| 1211 throw TypeError('listener must be a function'); | |
| 1212 | |
| 1213 if (!this._events || !this._events[type]) | |
| 1214 return this; | |
| 1215 | |
| 1216 list = this._events[type]; | |
| 1217 length = list.length; | |
| 1218 position = -1; | |
| 1219 | |
| 1220 if (list === listener || | |
| 1221 (isFunction(list.listener) && list.listener === listener)) { | |
| 1222 delete this._events[type]; | |
| 1223 if (this._events.removeListener) | |
| 1224 this.emit('removeListener', type, listener); | |
| 1225 | |
| 1226 } else if (isObject(list)) { | |
| 1227 for (i = length; i-- > 0;) { | |
| 1228 if (list[i] === listener || | |
| 1229 (list[i].listener && list[i].listener === listener)) { | |
| 1230 position = i; | |
| 1231 break; | |
| 1232 } | |
| 1233 } | |
| 1234 | |
| 1235 if (position < 0) | |
| 1236 return this; | |
| 1237 | |
| 1238 if (list.length === 1) { | |
| 1239 list.length = 0; | |
| 1240 delete this._events[type]; | |
| 1241 } else { | |
| 1242 list.splice(position, 1); | |
| 1243 } | |
| 1244 | |
| 1245 if (this._events.removeListener) | |
| 1246 this.emit('removeListener', type, listener); | |
| 1247 } | |
| 1248 | |
| 1249 return this; | |
| 1250 }; | |
| 1251 | |
| 1252 EventEmitter.prototype.removeAllListeners = function(type) { | |
| 1253 var key, listeners; | |
| 1254 | |
| 1255 if (!this._events) | |
| 1256 return this; | |
| 1257 | |
| 1258 // not listening for removeListener, no need to emit | |
| 1259 if (!this._events.removeListener) { | |
| 1260 if (arguments.length === 0) | |
| 1261 this._events = {}; | |
| 1262 else if (this._events[type]) | |
| 1263 delete this._events[type]; | |
| 1264 return this; | |
| 1265 } | |
| 1266 | |
| 1267 // emit removeListener for all listeners on all events | |
| 1268 if (arguments.length === 0) { | |
| 1269 for (key in this._events) { | |
| 1270 if (key === 'removeListener') continue; | |
| 1271 this.removeAllListeners(key); | |
| 1272 } | |
| 1273 this.removeAllListeners('removeListener'); | |
| 1274 this._events = {}; | |
| 1275 return this; | |
| 1276 } | |
| 1277 | |
| 1278 listeners = this._events[type]; | |
| 1279 | |
| 1280 if (isFunction(listeners)) { | |
| 1281 this.removeListener(type, listeners); | |
| 1282 } else { | |
| 1283 // LIFO order | |
| 1284 while (listeners.length) | |
| 1285 this.removeListener(type, listeners[listeners.length - 1]); | |
| 1286 } | |
| 1287 delete this._events[type]; | |
| 1288 | |
| 1289 return this; | |
| 1290 }; | |
| 1291 | |
| 1292 EventEmitter.prototype.listeners = function(type) { | |
| 1293 var ret; | |
| 1294 if (!this._events || !this._events[type]) | |
| 1295 ret = []; | |
| 1296 else if (isFunction(this._events[type])) | |
| 1297 ret = [this._events[type]]; | |
| 1298 else | |
| 1299 ret = this._events[type].slice(); | |
| 1300 return ret; | |
| 1301 }; | |
| 1302 | |
| 1303 EventEmitter.listenerCount = function(emitter, type) { | |
| 1304 var ret; | |
| 1305 if (!emitter._events || !emitter._events[type]) | |
| 1306 ret = 0; | |
| 1307 else if (isFunction(emitter._events[type])) | |
| 1308 ret = 1; | |
| 1309 else | |
| 1310 ret = emitter._events[type].length; | |
| 1311 return ret; | |
| 1312 }; | |
| 1313 | |
| 1314 function isFunction(arg) { | |
| 1315 return typeof arg === 'function'; | |
| 1316 } | |
| 1317 | |
| 1318 function isNumber(arg) { | |
| 1319 return typeof arg === 'number'; | |
| 1320 } | |
| 1321 | |
| 1322 function isObject(arg) { | |
| 1323 return typeof arg === 'object' && arg !== null; | |
| 1324 } | |
| 1325 | |
| 1326 function isUndefined(arg) { | |
| 1327 return arg === void 0; | |
| 1328 } | |
| 1329 | |
| 1330 },{}],10:[function(require,module,exports){ | |
| 1331 arguments[4][6][0].apply(exports,arguments) | |
| 1332 },{"dup":6}],11:[function(require,module,exports){ | |
| 1333 // shim for using process in browser | |
| 1334 | |
| 1335 var process = module.exports = {}; | |
| 1336 var queue = []; | |
| 1337 var draining = false; | |
| 1338 | |
| 1339 function drainQueue() { | |
| 1340 if (draining) { | |
| 1341 return; | |
| 1342 } | |
| 1343 draining = true; | |
| 1344 var currentQueue; | |
| 1345 var len = queue.length; | |
| 1346 while(len) { | |
| 1347 currentQueue = queue; | |
| 1348 queue = []; | |
| 1349 var i = -1; | |
| 1350 while (++i < len) { | |
| 1351 currentQueue[i](); | |
| 1352 } | |
| 1353 len = queue.length; | |
| 1354 } | |
| 1355 draining = false; | |
| 1356 } | |
| 1357 process.nextTick = function (fun) { | |
| 1358 queue.push(fun); | |
| 1359 if (!draining) { | |
| 1360 setTimeout(drainQueue, 0); | |
| 1361 } | |
| 1362 }; | |
| 1363 | |
| 1364 process.title = 'browser'; | |
| 1365 process.browser = true; | |
| 1366 process.env = {}; | |
| 1367 process.argv = []; | |
| 1368 process.version = ''; // empty string to avoid regexp issues | |
| 1369 process.versions = {}; | |
| 1370 | |
| 1371 function noop() {} | |
| 1372 | |
| 1373 process.on = noop; | |
| 1374 process.addListener = noop; | |
| 1375 process.once = noop; | |
| 1376 process.off = noop; | |
| 1377 process.removeListener = noop; | |
| 1378 process.removeAllListeners = noop; | |
| 1379 process.emit = noop; | |
| 1380 | |
| 1381 process.binding = function (name) { | |
| 1382 throw new Error('process.binding is not supported'); | |
| 1383 }; | |
| 1384 | |
| 1385 // TODO(shtylman) | |
| 1386 process.cwd = function () { return '/' }; | |
| 1387 process.chdir = function (dir) { | |
| 1388 throw new Error('process.chdir is not supported'); | |
| 1389 }; | |
| 1390 process.umask = function() { return 0; }; | |
| 1391 | |
| 1392 },{}],12:[function(require,module,exports){ | |
| 1393 arguments[4][7][0].apply(exports,arguments) | |
| 1394 },{"dup":7}],13:[function(require,module,exports){ | |
| 1395 arguments[4][8][0].apply(exports,arguments) | |
| 1396 },{"./support/isBuffer":12,"_process":11,"dup":8,"inherits":10}],14:[function(require,module,exports){ | |
| 1397 (function (global){ | |
| 1398 /*global window, global*/ | |
| 1399 var util = require("util") | |
| 1400 var assert = require("assert") | |
| 1401 var now = require("date-now") | |
| 1402 | |
| 1403 var slice = Array.prototype.slice | |
| 1404 var console | |
| 1405 var times = {} | |
| 1406 | |
| 1407 if (typeof global !== "undefined" && global.console) { | |
| 1408 console = global.console | |
| 1409 } else if (typeof window !== "undefined" && window.console) { | |
| 1410 console = window.console | |
| 1411 } else { | |
| 1412 console = {} | |
| 1413 } | |
| 1414 | |
| 1415 var functions = [ | |
| 1416 [log, "log"], | |
| 1417 [info, "info"], | |
| 1418 [warn, "warn"], | |
| 1419 [error, "error"], | |
| 1420 [time, "time"], | |
| 1421 [timeEnd, "timeEnd"], | |
| 1422 [trace, "trace"], | |
| 1423 [dir, "dir"], | |
| 1424 [consoleAssert, "assert"] | |
| 1425 ] | |
| 1426 | |
| 1427 for (var i = 0; i < functions.length; i++) { | |
| 1428 var tuple = functions[i] | |
| 1429 var f = tuple[0] | |
| 1430 var name = tuple[1] | |
| 1431 | |
| 1432 if (!console[name]) { | |
| 1433 console[name] = f | |
| 1434 } | |
| 1435 } | |
| 1436 | |
| 1437 module.exports = console | |
| 1438 | |
| 1439 function log() {} | |
| 1440 | |
| 1441 function info() { | |
| 1442 console.log.apply(console, arguments) | |
| 1443 } | |
| 1444 | |
| 1445 function warn() { | |
| 1446 console.log.apply(console, arguments) | |
| 1447 } | |
| 1448 | |
| 1449 function error() { | |
| 1450 console.warn.apply(console, arguments) | |
| 1451 } | |
| 1452 | |
| 1453 function time(label) { | |
| 1454 times[label] = now() | |
| 1455 } | |
| 1456 | |
| 1457 function timeEnd(label) { | |
| 1458 var time = times[label] | |
| 1459 if (!time) { | |
| 1460 throw new Error("No such label: " + label) | |
| 1461 } | |
| 1462 | |
| 1463 var duration = now() - time | |
| 1464 console.log(label + ": " + duration + "ms") | |
| 1465 } | |
| 1466 | |
| 1467 function trace() { | |
| 1468 var err = new Error() | |
| 1469 err.name = "Trace" | |
| 1470 err.message = util.format.apply(null, arguments) | |
| 1471 console.error(err.stack) | |
| 1472 } | |
| 1473 | |
| 1474 function dir(object) { | |
| 1475 console.log(util.inspect(object) + "\n") | |
| 1476 } | |
| 1477 | |
| 1478 function consoleAssert(expression) { | |
| 1479 if (!expression) { | |
| 1480 var arr = slice.call(arguments, 1) | |
| 1481 assert.ok(false, util.format.apply(null, arr)) | |
| 1482 } | |
| 1483 } | |
| 1484 | |
| 1485 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
| 1486 },{"assert":5,"date-now":15,"util":13}],15:[function(require,module,exports){ | |
| 1487 module.exports = now | |
| 1488 | |
| 1489 function now() { | |
| 1490 return new Date().getTime() | |
| 1491 } | |
| 1492 | |
| 1493 },{}],16:[function(require,module,exports){ | |
| 1494 (function (global){ | |
| 1495 /** | |
| 1496 * @license | |
| 1497 * Lodash <https://lodash.com/> | |
| 1498 * Copyright OpenJS Foundation and other contributors <https://openjsf.org/> | |
| 1499 * Released under MIT license <https://lodash.com/license> | |
| 1500 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE> | |
| 1501 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors | |
| 1502 */ | |
| 1503 ;(function() { | |
| 1504 | |
| 1505 /** Used as a safe reference for `undefined` in pre-ES5 environments. */ | |
| 1506 var undefined; | |
| 1507 | |
| 1508 /** Used as the semantic version number. */ | |
| 1509 var VERSION = '4.17.19'; | |
| 1510 | |
| 1511 /** Used as the size to enable large array optimizations. */ | |
| 1512 var LARGE_ARRAY_SIZE = 200; | |
| 1513 | |
| 1514 /** Error message constants. */ | |
| 1515 var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.', | |
| 1516 FUNC_ERROR_TEXT = 'Expected a function'; | |
| 1517 | |
| 1518 /** Used to stand-in for `undefined` hash values. */ | |
| 1519 var HASH_UNDEFINED = '__lodash_hash_undefined__'; | |
| 1520 | |
| 1521 /** Used as the maximum memoize cache size. */ | |
| 1522 var MAX_MEMOIZE_SIZE = 500; | |
| 1523 | |
| 1524 /** Used as the internal argument placeholder. */ | |
| 1525 var PLACEHOLDER = '__lodash_placeholder__'; | |
| 1526 | |
| 1527 /** Used to compose bitmasks for cloning. */ | |
| 1528 var CLONE_DEEP_FLAG = 1, | |
| 1529 CLONE_FLAT_FLAG = 2, | |
| 1530 CLONE_SYMBOLS_FLAG = 4; | |
| 1531 | |
| 1532 /** Used to compose bitmasks for value comparisons. */ | |
| 1533 var COMPARE_PARTIAL_FLAG = 1, | |
| 1534 COMPARE_UNORDERED_FLAG = 2; | |
| 1535 | |
| 1536 /** Used to compose bitmasks for function metadata. */ | |
| 1537 var WRAP_BIND_FLAG = 1, | |
| 1538 WRAP_BIND_KEY_FLAG = 2, | |
| 1539 WRAP_CURRY_BOUND_FLAG = 4, | |
| 1540 WRAP_CURRY_FLAG = 8, | |
| 1541 WRAP_CURRY_RIGHT_FLAG = 16, | |
| 1542 WRAP_PARTIAL_FLAG = 32, | |
| 1543 WRAP_PARTIAL_RIGHT_FLAG = 64, | |
| 1544 WRAP_ARY_FLAG = 128, | |
| 1545 WRAP_REARG_FLAG = 256, | |
| 1546 WRAP_FLIP_FLAG = 512; | |
| 1547 | |
| 1548 /** Used as default options for `_.truncate`. */ | |
| 1549 var DEFAULT_TRUNC_LENGTH = 30, | |
| 1550 DEFAULT_TRUNC_OMISSION = '...'; | |
| 1551 | |
| 1552 /** Used to detect hot functions by number of calls within a span of milliseconds. */ | |
| 1553 var HOT_COUNT = 800, | |
| 1554 HOT_SPAN = 16; | |
| 1555 | |
| 1556 /** Used to indicate the type of lazy iteratees. */ | |
| 1557 var LAZY_FILTER_FLAG = 1, | |
| 1558 LAZY_MAP_FLAG = 2, | |
| 1559 LAZY_WHILE_FLAG = 3; | |
| 1560 | |
| 1561 /** Used as references for various `Number` constants. */ | |
| 1562 var INFINITY = 1 / 0, | |
| 1563 MAX_SAFE_INTEGER = 9007199254740991, | |
| 1564 MAX_INTEGER = 1.7976931348623157e+308, | |
| 1565 NAN = 0 / 0; | |
| 1566 | |
| 1567 /** Used as references for the maximum length and index of an array. */ | |
| 1568 var MAX_ARRAY_LENGTH = 4294967295, | |
| 1569 MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1, | |
| 1570 HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; | |
| 1571 | |
| 1572 /** Used to associate wrap methods with their bit flags. */ | |
| 1573 var wrapFlags = [ | |
| 1574 ['ary', WRAP_ARY_FLAG], | |
| 1575 ['bind', WRAP_BIND_FLAG], | |
| 1576 ['bindKey', WRAP_BIND_KEY_FLAG], | |
| 1577 ['curry', WRAP_CURRY_FLAG], | |
| 1578 ['curryRight', WRAP_CURRY_RIGHT_FLAG], | |
| 1579 ['flip', WRAP_FLIP_FLAG], | |
| 1580 ['partial', WRAP_PARTIAL_FLAG], | |
| 1581 ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], | |
| 1582 ['rearg', WRAP_REARG_FLAG] | |
| 1583 ]; | |
| 1584 | |
| 1585 /** `Object#toString` result references. */ | |
| 1586 var argsTag = '[object Arguments]', | |
| 1587 arrayTag = '[object Array]', | |
| 1588 asyncTag = '[object AsyncFunction]', | |
| 1589 boolTag = '[object Boolean]', | |
| 1590 dateTag = '[object Date]', | |
| 1591 domExcTag = '[object DOMException]', | |
| 1592 errorTag = '[object Error]', | |
| 1593 funcTag = '[object Function]', | |
| 1594 genTag = '[object GeneratorFunction]', | |
| 1595 mapTag = '[object Map]', | |
| 1596 numberTag = '[object Number]', | |
| 1597 nullTag = '[object Null]', | |
| 1598 objectTag = '[object Object]', | |
| 1599 promiseTag = '[object Promise]', | |
| 1600 proxyTag = '[object Proxy]', | |
| 1601 regexpTag = '[object RegExp]', | |
| 1602 setTag = '[object Set]', | |
| 1603 stringTag = '[object String]', | |
| 1604 symbolTag = '[object Symbol]', | |
| 1605 undefinedTag = '[object Undefined]', | |
| 1606 weakMapTag = '[object WeakMap]', | |
| 1607 weakSetTag = '[object WeakSet]'; | |
| 1608 | |
| 1609 var arrayBufferTag = '[object ArrayBuffer]', | |
| 1610 dataViewTag = '[object DataView]', | |
| 1611 float32Tag = '[object Float32Array]', | |
| 1612 float64Tag = '[object Float64Array]', | |
| 1613 int8Tag = '[object Int8Array]', | |
| 1614 int16Tag = '[object Int16Array]', | |
| 1615 int32Tag = '[object Int32Array]', | |
| 1616 uint8Tag = '[object Uint8Array]', | |
| 1617 uint8ClampedTag = '[object Uint8ClampedArray]', | |
| 1618 uint16Tag = '[object Uint16Array]', | |
| 1619 uint32Tag = '[object Uint32Array]'; | |
| 1620 | |
| 1621 /** Used to match empty string literals in compiled template source. */ | |
| 1622 var reEmptyStringLeading = /\b__p \+= '';/g, | |
| 1623 reEmptyStringMiddle = /\b(__p \+=) '' \+/g, | |
| 1624 reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; | |
| 1625 | |
| 1626 /** Used to match HTML entities and HTML characters. */ | |
| 1627 var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g, | |
| 1628 reUnescapedHtml = /[&<>"']/g, | |
| 1629 reHasEscapedHtml = RegExp(reEscapedHtml.source), | |
| 1630 reHasUnescapedHtml = RegExp(reUnescapedHtml.source); | |
| 1631 | |
| 1632 /** Used to match template delimiters. */ | |
| 1633 var reEscape = /<%-([\s\S]+?)%>/g, | |
| 1634 reEvaluate = /<%([\s\S]+?)%>/g, | |
| 1635 reInterpolate = /<%=([\s\S]+?)%>/g; | |
| 1636 | |
| 1637 /** Used to match property names within property paths. */ | |
| 1638 var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, | |
| 1639 reIsPlainProp = /^\w*$/, | |
| 1640 rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g; | |
| 1641 | |
| 1642 /** | |
| 1643 * Used to match `RegExp` | |
| 1644 * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns). | |
| 1645 */ | |
| 1646 var reRegExpChar = /[\\^$.*+?()[\]{}|]/g, | |
| 1647 reHasRegExpChar = RegExp(reRegExpChar.source); | |
| 1648 | |
| 1649 /** Used to match leading and trailing whitespace. */ | |
| 1650 var reTrim = /^\s+|\s+$/g, | |
| 1651 reTrimStart = /^\s+/, | |
| 1652 reTrimEnd = /\s+$/; | |
| 1653 | |
| 1654 /** Used to match wrap detail comments. */ | |
| 1655 var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/, | |
| 1656 reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/, | |
| 1657 reSplitDetails = /,? & /; | |
| 1658 | |
| 1659 /** Used to match words composed of alphanumeric characters. */ | |
| 1660 var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g; | |
| 1661 | |
| 1662 /** Used to match backslashes in property paths. */ | |
| 1663 var reEscapeChar = /\\(\\)?/g; | |
| 1664 | |
| 1665 /** | |
| 1666 * Used to match | |
| 1667 * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components). | |
| 1668 */ | |
| 1669 var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; | |
| 1670 | |
| 1671 /** Used to match `RegExp` flags from their coerced string values. */ | |
| 1672 var reFlags = /\w*$/; | |
| 1673 | |
| 1674 /** Used to detect bad signed hexadecimal string values. */ | |
| 1675 var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; | |
| 1676 | |
| 1677 /** Used to detect binary string values. */ | |
| 1678 var reIsBinary = /^0b[01]+$/i; | |
| 1679 | |
| 1680 /** Used to detect host constructors (Safari). */ | |
| 1681 var reIsHostCtor = /^\[object .+?Constructor\]$/; | |
| 1682 | |
| 1683 /** Used to detect octal string values. */ | |
| 1684 var reIsOctal = /^0o[0-7]+$/i; | |
| 1685 | |
| 1686 /** Used to detect unsigned integer values. */ | |
| 1687 var reIsUint = /^(?:0|[1-9]\d*)$/; | |
| 1688 | |
| 1689 /** Used to match Latin Unicode letters (excluding mathematical operators). */ | |
| 1690 var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g; | |
| 1691 | |
| 1692 /** Used to ensure capturing order of template delimiters. */ | |
| 1693 var reNoMatch = /($^)/; | |
| 1694 | |
| 1695 /** Used to match unescaped characters in compiled string literals. */ | |
| 1696 var reUnescapedString = /['\n\r\u2028\u2029\\]/g; | |
| 1697 | |
| 1698 /** Used to compose unicode character classes. */ | |
| 1699 var rsAstralRange = '\\ud800-\\udfff', | |
| 1700 rsComboMarksRange = '\\u0300-\\u036f', | |
| 1701 reComboHalfMarksRange = '\\ufe20-\\ufe2f', | |
| 1702 rsComboSymbolsRange = '\\u20d0-\\u20ff', | |
| 1703 rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange, | |
| 1704 rsDingbatRange = '\\u2700-\\u27bf', | |
| 1705 rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff', | |
| 1706 rsMathOpRange = '\\xac\\xb1\\xd7\\xf7', | |
| 1707 rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf', | |
| 1708 rsPunctuationRange = '\\u2000-\\u206f', | |
| 1709 rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000', | |
| 1710 rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde', | |
| 1711 rsVarRange = '\\ufe0e\\ufe0f', | |
| 1712 rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange; | |
| 1713 | |
| 1714 /** Used to compose unicode capture groups. */ | |
| 1715 var rsApos = "['\u2019]", | |
| 1716 rsAstral = '[' + rsAstralRange + ']', | |
| 1717 rsBreak = '[' + rsBreakRange + ']', | |
| 1718 rsCombo = '[' + rsComboRange + ']', | |
| 1719 rsDigits = '\\d+', | |
| 1720 rsDingbat = '[' + rsDingbatRange + ']', | |
| 1721 rsLower = '[' + rsLowerRange + ']', | |
| 1722 rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']', | |
| 1723 rsFitz = '\\ud83c[\\udffb-\\udfff]', | |
| 1724 rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')', | |
| 1725 rsNonAstral = '[^' + rsAstralRange + ']', | |
| 1726 rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}', | |
| 1727 rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]', | |
| 1728 rsUpper = '[' + rsUpperRange + ']', | |
| 1729 rsZWJ = '\\u200d'; | |
| 1730 | |
| 1731 /** Used to compose unicode regexes. */ | |
| 1732 var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')', | |
| 1733 rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')', | |
| 1734 rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?', | |
| 1735 rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?', | |
| 1736 reOptMod = rsModifier + '?', | |
| 1737 rsOptVar = '[' + rsVarRange + ']?', | |
| 1738 rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*', | |
| 1739 rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])', | |
| 1740 rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])', | |
| 1741 rsSeq = rsOptVar + reOptMod + rsOptJoin, | |
| 1742 rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq, | |
| 1743 rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')'; | |
| 1744 | |
| 1745 /** Used to match apostrophes. */ | |
| 1746 var reApos = RegExp(rsApos, 'g'); | |
| 1747 | |
| 1748 /** | |
| 1749 * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and | |
| 1750 * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols). | |
| 1751 */ | |
| 1752 var reComboMark = RegExp(rsCombo, 'g'); | |
| 1753 | |
| 1754 /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ | |
| 1755 var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); | |
| 1756 | |
| 1757 /** Used to match complex or compound words. */ | |
| 1758 var reUnicodeWord = RegExp([ | |
| 1759 rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', | |
| 1760 rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', | |
| 1761 rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, | |
| 1762 rsUpper + '+' + rsOptContrUpper, | |
| 1763 rsOrdUpper, | |
| 1764 rsOrdLower, | |
| 1765 rsDigits, | |
| 1766 rsEmoji | |
| 1767 ].join('|'), 'g'); | |
| 1768 | |
| 1769 /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ | |
| 1770 var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']'); | |
| 1771 | |
| 1772 /** Used to detect strings that need a more robust regexp to match words. */ | |
| 1773 var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/; | |
| 1774 | |
| 1775 /** Used to assign default `context` object properties. */ | |
| 1776 var contextProps = [ | |
| 1777 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', | |
| 1778 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', | |
| 1779 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', | |
| 1780 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', | |
| 1781 '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout' | |
| 1782 ]; | |
| 1783 | |
| 1784 /** Used to make template sourceURLs easier to identify. */ | |
| 1785 var templateCounter = -1; | |
| 1786 | |
| 1787 /** Used to identify `toStringTag` values of typed arrays. */ | |
| 1788 var typedArrayTags = {}; | |
| 1789 typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = | |
| 1790 typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = | |
| 1791 typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = | |
| 1792 typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = | |
| 1793 typedArrayTags[uint32Tag] = true; | |
| 1794 typedArrayTags[argsTag] = typedArrayTags[arrayTag] = | |
| 1795 typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = | |
| 1796 typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = | |
| 1797 typedArrayTags[errorTag] = typedArrayTags[funcTag] = | |
| 1798 typedArrayTags[mapTag] = typedArrayTags[numberTag] = | |
| 1799 typedArrayTags[objectTag] = typedArrayTags[regexpTag] = | |
| 1800 typedArrayTags[setTag] = typedArrayTags[stringTag] = | |
| 1801 typedArrayTags[weakMapTag] = false; | |
| 1802 | |
| 1803 /** Used to identify `toStringTag` values supported by `_.clone`. */ | |
| 1804 var cloneableTags = {}; | |
| 1805 cloneableTags[argsTag] = cloneableTags[arrayTag] = | |
| 1806 cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = | |
| 1807 cloneableTags[boolTag] = cloneableTags[dateTag] = | |
| 1808 cloneableTags[float32Tag] = cloneableTags[float64Tag] = | |
| 1809 cloneableTags[int8Tag] = cloneableTags[int16Tag] = | |
| 1810 cloneableTags[int32Tag] = cloneableTags[mapTag] = | |
| 1811 cloneableTags[numberTag] = cloneableTags[objectTag] = | |
| 1812 cloneableTags[regexpTag] = cloneableTags[setTag] = | |
| 1813 cloneableTags[stringTag] = cloneableTags[symbolTag] = | |
| 1814 cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = | |
| 1815 cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true; | |
| 1816 cloneableTags[errorTag] = cloneableTags[funcTag] = | |
| 1817 cloneableTags[weakMapTag] = false; | |
| 1818 | |
| 1819 /** Used to map Latin Unicode letters to basic Latin letters. */ | |
| 1820 var deburredLetters = { | |
| 1821 // Latin-1 Supplement block. | |
| 1822 '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A', | |
| 1823 '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a', | |
| 1824 '\xc7': 'C', '\xe7': 'c', | |
| 1825 '\xd0': 'D', '\xf0': 'd', | |
| 1826 '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E', | |
| 1827 '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e', | |
| 1828 '\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I', | |
| 1829 '\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i', | |
| 1830 '\xd1': 'N', '\xf1': 'n', | |
| 1831 '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O', | |
| 1832 '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o', | |
| 1833 '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U', | |
| 1834 '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u', | |
| 1835 '\xdd': 'Y', '\xfd': 'y', '\xff': 'y', | |
| 1836 '\xc6': 'Ae', '\xe6': 'ae', | |
| 1837 '\xde': 'Th', '\xfe': 'th', | |
| 1838 '\xdf': 'ss', | |
| 1839 // Latin Extended-A block. | |
| 1840 '\u0100': 'A', '\u0102': 'A', '\u0104': 'A', | |
| 1841 '\u0101': 'a', '\u0103': 'a', '\u0105': 'a', | |
| 1842 '\u0106': 'C', '\u0108': 'C', '\u010a': 'C', '\u010c': 'C', | |
| 1843 '\u0107': 'c', '\u0109': 'c', '\u010b': 'c', '\u010d': 'c', | |
| 1844 '\u010e': 'D', '\u0110': 'D', '\u010f': 'd', '\u0111': 'd', | |
| 1845 '\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E', | |
| 1846 '\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e', | |
| 1847 '\u011c': 'G', '\u011e': 'G', '\u0120': 'G', '\u0122': 'G', | |
| 1848 '\u011d': 'g', '\u011f': 'g', '\u0121': 'g', '\u0123': 'g', | |
| 1849 '\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h', | |
| 1850 '\u0128': 'I', '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I', | |
| 1851 '\u0129': 'i', '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i', | |
| 1852 '\u0134': 'J', '\u0135': 'j', | |
| 1853 '\u0136': 'K', '\u0137': 'k', '\u0138': 'k', | |
| 1854 '\u0139': 'L', '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L', | |
| 1855 '\u013a': 'l', '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l', | |
| 1856 '\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014a': 'N', | |
| 1857 '\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014b': 'n', | |
| 1858 '\u014c': 'O', '\u014e': 'O', '\u0150': 'O', | |
| 1859 '\u014d': 'o', '\u014f': 'o', '\u0151': 'o', | |
| 1860 '\u0154': 'R', '\u0156': 'R', '\u0158': 'R', | |
| 1861 '\u0155': 'r', '\u0157': 'r', '\u0159': 'r', | |
| 1862 '\u015a': 'S', '\u015c': 'S', '\u015e': 'S', '\u0160': 'S', | |
| 1863 '\u015b': 's', '\u015d': 's', '\u015f': 's', '\u0161': 's', | |
| 1864 '\u0162': 'T', '\u0164': 'T', '\u0166': 'T', | |
| 1865 '\u0163': 't', '\u0165': 't', '\u0167': 't', | |
| 1866 '\u0168': 'U', '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U', | |
| 1867 '\u0169': 'u', '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u', | |
| 1868 '\u0174': 'W', '\u0175': 'w', | |
| 1869 '\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y', | |
| 1870 '\u0179': 'Z', '\u017b': 'Z', '\u017d': 'Z', | |
| 1871 '\u017a': 'z', '\u017c': 'z', '\u017e': 'z', | |
| 1872 '\u0132': 'IJ', '\u0133': 'ij', | |
| 1873 '\u0152': 'Oe', '\u0153': 'oe', | |
| 1874 '\u0149': "'n", '\u017f': 's' | |
| 1875 }; | |
| 1876 | |
| 1877 /** Used to map characters to HTML entities. */ | |
| 1878 var htmlEscapes = { | |
| 1879 '&': '&', | |
| 1880 '<': '<', | |
| 1881 '>': '>', | |
| 1882 '"': '"', | |
| 1883 "'": ''' | |
| 1884 }; | |
| 1885 | |
| 1886 /** Used to map HTML entities to characters. */ | |
| 1887 var htmlUnescapes = { | |
| 1888 '&': '&', | |
| 1889 '<': '<', | |
| 1890 '>': '>', | |
| 1891 '"': '"', | |
| 1892 ''': "'" | |
| 1893 }; | |
| 1894 | |
| 1895 /** Used to escape characters for inclusion in compiled string literals. */ | |
| 1896 var stringEscapes = { | |
| 1897 '\\': '\\', | |
| 1898 "'": "'", | |
| 1899 '\n': 'n', | |
| 1900 '\r': 'r', | |
| 1901 '\u2028': 'u2028', | |
| 1902 '\u2029': 'u2029' | |
| 1903 }; | |
| 1904 | |
| 1905 /** Built-in method references without a dependency on `root`. */ | |
| 1906 var freeParseFloat = parseFloat, | |
| 1907 freeParseInt = parseInt; | |
| 1908 | |
| 1909 /** Detect free variable `global` from Node.js. */ | |
| 1910 var freeGlobal = typeof global == 'object' && global && global.Object === Object && global; | |
| 1911 | |
| 1912 /** Detect free variable `self`. */ | |
| 1913 var freeSelf = typeof self == 'object' && self && self.Object === Object && self; | |
| 1914 | |
| 1915 /** Used as a reference to the global object. */ | |
| 1916 var root = freeGlobal || freeSelf || Function('return this')(); | |
| 1917 | |
| 1918 /** Detect free variable `exports`. */ | |
| 1919 var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports; | |
| 1920 | |
| 1921 /** Detect free variable `module`. */ | |
| 1922 var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module; | |
| 1923 | |
| 1924 /** Detect the popular CommonJS extension `module.exports`. */ | |
| 1925 var moduleExports = freeModule && freeModule.exports === freeExports; | |
| 1926 | |
| 1927 /** Detect free variable `process` from Node.js. */ | |
| 1928 var freeProcess = moduleExports && freeGlobal.process; | |
| 1929 | |
| 1930 /** Used to access faster Node.js helpers. */ | |
| 1931 var nodeUtil = (function() { | |
| 1932 try { | |
| 1933 // Use `util.types` for Node.js 10+. | |
| 1934 var types = freeModule && freeModule.require && freeModule.require('util').types; | |
| 1935 | |
| 1936 if (types) { | |
| 1937 return types; | |
| 1938 } | |
| 1939 | |
| 1940 // Legacy `process.binding('util')` for Node.js < 10. | |
| 1941 return freeProcess && freeProcess.binding && freeProcess.binding('util'); | |
| 1942 } catch (e) {} | |
| 1943 }()); | |
| 1944 | |
| 1945 /* Node.js helper references. */ | |
| 1946 var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer, | |
| 1947 nodeIsDate = nodeUtil && nodeUtil.isDate, | |
| 1948 nodeIsMap = nodeUtil && nodeUtil.isMap, | |
| 1949 nodeIsRegExp = nodeUtil && nodeUtil.isRegExp, | |
| 1950 nodeIsSet = nodeUtil && nodeUtil.isSet, | |
| 1951 nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; | |
| 1952 | |
| 1953 /*--------------------------------------------------------------------------*/ | |
| 1954 | |
| 1955 /** | |
| 1956 * A faster alternative to `Function#apply`, this function invokes `func` | |
| 1957 * with the `this` binding of `thisArg` and the arguments of `args`. | |
| 1958 * | |
| 1959 * @private | |
| 1960 * @param {Function} func The function to invoke. | |
| 1961 * @param {*} thisArg The `this` binding of `func`. | |
| 1962 * @param {Array} args The arguments to invoke `func` with. | |
| 1963 * @returns {*} Returns the result of `func`. | |
| 1964 */ | |
| 1965 function apply(func, thisArg, args) { | |
| 1966 switch (args.length) { | |
| 1967 case 0: return func.call(thisArg); | |
| 1968 case 1: return func.call(thisArg, args[0]); | |
| 1969 case 2: return func.call(thisArg, args[0], args[1]); | |
| 1970 case 3: return func.call(thisArg, args[0], args[1], args[2]); | |
| 1971 } | |
| 1972 return func.apply(thisArg, args); | |
| 1973 } | |
| 1974 | |
| 1975 /** | |
| 1976 * A specialized version of `baseAggregator` for arrays. | |
| 1977 * | |
| 1978 * @private | |
| 1979 * @param {Array} [array] The array to iterate over. | |
| 1980 * @param {Function} setter The function to set `accumulator` values. | |
| 1981 * @param {Function} iteratee The iteratee to transform keys. | |
| 1982 * @param {Object} accumulator The initial aggregated object. | |
| 1983 * @returns {Function} Returns `accumulator`. | |
| 1984 */ | |
| 1985 function arrayAggregator(array, setter, iteratee, accumulator) { | |
| 1986 var index = -1, | |
| 1987 length = array == null ? 0 : array.length; | |
| 1988 | |
| 1989 while (++index < length) { | |
| 1990 var value = array[index]; | |
| 1991 setter(accumulator, value, iteratee(value), array); | |
| 1992 } | |
| 1993 return accumulator; | |
| 1994 } | |
| 1995 | |
| 1996 /** | |
| 1997 * A specialized version of `_.forEach` for arrays without support for | |
| 1998 * iteratee shorthands. | |
| 1999 * | |
| 2000 * @private | |
| 2001 * @param {Array} [array] The array to iterate over. | |
| 2002 * @param {Function} iteratee The function invoked per iteration. | |
| 2003 * @returns {Array} Returns `array`. | |
| 2004 */ | |
| 2005 function arrayEach(array, iteratee) { | |
| 2006 var index = -1, | |
| 2007 length = array == null ? 0 : array.length; | |
| 2008 | |
| 2009 while (++index < length) { | |
| 2010 if (iteratee(array[index], index, array) === false) { | |
| 2011 break; | |
| 2012 } | |
| 2013 } | |
| 2014 return array; | |
| 2015 } | |
| 2016 | |
| 2017 /** | |
| 2018 * A specialized version of `_.forEachRight` for arrays without support for | |
| 2019 * iteratee shorthands. | |
| 2020 * | |
| 2021 * @private | |
| 2022 * @param {Array} [array] The array to iterate over. | |
| 2023 * @param {Function} iteratee The function invoked per iteration. | |
| 2024 * @returns {Array} Returns `array`. | |
| 2025 */ | |
| 2026 function arrayEachRight(array, iteratee) { | |
| 2027 var length = array == null ? 0 : array.length; | |
| 2028 | |
| 2029 while (length--) { | |
| 2030 if (iteratee(array[length], length, array) === false) { | |
| 2031 break; | |
| 2032 } | |
| 2033 } | |
| 2034 return array; | |
| 2035 } | |
| 2036 | |
| 2037 /** | |
| 2038 * A specialized version of `_.every` for arrays without support for | |
| 2039 * iteratee shorthands. | |
| 2040 * | |
| 2041 * @private | |
| 2042 * @param {Array} [array] The array to iterate over. | |
| 2043 * @param {Function} predicate The function invoked per iteration. | |
| 2044 * @returns {boolean} Returns `true` if all elements pass the predicate check, | |
| 2045 * else `false`. | |
| 2046 */ | |
| 2047 function arrayEvery(array, predicate) { | |
| 2048 var index = -1, | |
| 2049 length = array == null ? 0 : array.length; | |
| 2050 | |
| 2051 while (++index < length) { | |
| 2052 if (!predicate(array[index], index, array)) { | |
| 2053 return false; | |
| 2054 } | |
| 2055 } | |
| 2056 return true; | |
| 2057 } | |
| 2058 | |
| 2059 /** | |
| 2060 * A specialized version of `_.filter` for arrays without support for | |
| 2061 * iteratee shorthands. | |
| 2062 * | |
| 2063 * @private | |
| 2064 * @param {Array} [array] The array to iterate over. | |
| 2065 * @param {Function} predicate The function invoked per iteration. | |
| 2066 * @returns {Array} Returns the new filtered array. | |
| 2067 */ | |
| 2068 function arrayFilter(array, predicate) { | |
| 2069 var index = -1, | |
| 2070 length = array == null ? 0 : array.length, | |
| 2071 resIndex = 0, | |
| 2072 result = []; | |
| 2073 | |
| 2074 while (++index < length) { | |
| 2075 var value = array[index]; | |
| 2076 if (predicate(value, index, array)) { | |
| 2077 result[resIndex++] = value; | |
| 2078 } | |
| 2079 } | |
| 2080 return result; | |
| 2081 } | |
| 2082 | |
| 2083 /** | |
| 2084 * A specialized version of `_.includes` for arrays without support for | |
| 2085 * specifying an index to search from. | |
| 2086 * | |
| 2087 * @private | |
| 2088 * @param {Array} [array] The array to inspect. | |
| 2089 * @param {*} target The value to search for. | |
| 2090 * @returns {boolean} Returns `true` if `target` is found, else `false`. | |
| 2091 */ | |
| 2092 function arrayIncludes(array, value) { | |
| 2093 var length = array == null ? 0 : array.length; | |
| 2094 return !!length && baseIndexOf(array, value, 0) > -1; | |
| 2095 } | |
| 2096 | |
| 2097 /** | |
| 2098 * This function is like `arrayIncludes` except that it accepts a comparator. | |
| 2099 * | |
| 2100 * @private | |
| 2101 * @param {Array} [array] The array to inspect. | |
| 2102 * @param {*} target The value to search for. | |
| 2103 * @param {Function} comparator The comparator invoked per element. | |
| 2104 * @returns {boolean} Returns `true` if `target` is found, else `false`. | |
| 2105 */ | |
| 2106 function arrayIncludesWith(array, value, comparator) { | |
| 2107 var index = -1, | |
| 2108 length = array == null ? 0 : array.length; | |
| 2109 | |
| 2110 while (++index < length) { | |
| 2111 if (comparator(value, array[index])) { | |
| 2112 return true; | |
| 2113 } | |
| 2114 } | |
| 2115 return false; | |
| 2116 } | |
| 2117 | |
| 2118 /** | |
| 2119 * A specialized version of `_.map` for arrays without support for iteratee | |
| 2120 * shorthands. | |
| 2121 * | |
| 2122 * @private | |
| 2123 * @param {Array} [array] The array to iterate over. | |
| 2124 * @param {Function} iteratee The function invoked per iteration. | |
| 2125 * @returns {Array} Returns the new mapped array. | |
| 2126 */ | |
| 2127 function arrayMap(array, iteratee) { | |
| 2128 var index = -1, | |
| 2129 length = array == null ? 0 : array.length, | |
| 2130 result = Array(length); | |
| 2131 | |
| 2132 while (++index < length) { | |
| 2133 result[index] = iteratee(array[index], index, array); | |
| 2134 } | |
| 2135 return result; | |
| 2136 } | |
| 2137 | |
| 2138 /** | |
| 2139 * Appends the elements of `values` to `array`. | |
| 2140 * | |
| 2141 * @private | |
| 2142 * @param {Array} array The array to modify. | |
| 2143 * @param {Array} values The values to append. | |
| 2144 * @returns {Array} Returns `array`. | |
| 2145 */ | |
| 2146 function arrayPush(array, values) { | |
| 2147 var index = -1, | |
| 2148 length = values.length, | |
| 2149 offset = array.length; | |
| 2150 | |
| 2151 while (++index < length) { | |
| 2152 array[offset + index] = values[index]; | |
| 2153 } | |
| 2154 return array; | |
| 2155 } | |
| 2156 | |
| 2157 /** | |
| 2158 * A specialized version of `_.reduce` for arrays without support for | |
| 2159 * iteratee shorthands. | |
| 2160 * | |
| 2161 * @private | |
| 2162 * @param {Array} [array] The array to iterate over. | |
| 2163 * @param {Function} iteratee The function invoked per iteration. | |
| 2164 * @param {*} [accumulator] The initial value. | |
| 2165 * @param {boolean} [initAccum] Specify using the first element of `array` as | |
| 2166 * the initial value. | |
| 2167 * @returns {*} Returns the accumulated value. | |
| 2168 */ | |
| 2169 function arrayReduce(array, iteratee, accumulator, initAccum) { | |
| 2170 var index = -1, | |
| 2171 length = array == null ? 0 : array.length; | |
| 2172 | |
| 2173 if (initAccum && length) { | |
| 2174 accumulator = array[++index]; | |
| 2175 } | |
| 2176 while (++index < length) { | |
| 2177 accumulator = iteratee(accumulator, array[index], index, array); | |
| 2178 } | |
| 2179 return accumulator; | |
| 2180 } | |
| 2181 | |
| 2182 /** | |
| 2183 * A specialized version of `_.reduceRight` for arrays without support for | |
| 2184 * iteratee shorthands. | |
| 2185 * | |
| 2186 * @private | |
| 2187 * @param {Array} [array] The array to iterate over. | |
| 2188 * @param {Function} iteratee The function invoked per iteration. | |
| 2189 * @param {*} [accumulator] The initial value. | |
| 2190 * @param {boolean} [initAccum] Specify using the last element of `array` as | |
| 2191 * the initial value. | |
| 2192 * @returns {*} Returns the accumulated value. | |
| 2193 */ | |
| 2194 function arrayReduceRight(array, iteratee, accumulator, initAccum) { | |
| 2195 var length = array == null ? 0 : array.length; | |
| 2196 if (initAccum && length) { | |
| 2197 accumulator = array[--length]; | |
| 2198 } | |
| 2199 while (length--) { | |
| 2200 accumulator = iteratee(accumulator, array[length], length, array); | |
| 2201 } | |
| 2202 return accumulator; | |
| 2203 } | |
| 2204 | |
| 2205 /** | |
| 2206 * A specialized version of `_.some` for arrays without support for iteratee | |
| 2207 * shorthands. | |
| 2208 * | |
| 2209 * @private | |
| 2210 * @param {Array} [array] The array to iterate over. | |
| 2211 * @param {Function} predicate The function invoked per iteration. | |
| 2212 * @returns {boolean} Returns `true` if any element passes the predicate check, | |
| 2213 * else `false`. | |
| 2214 */ | |
| 2215 function arraySome(array, predicate) { | |
| 2216 var index = -1, | |
| 2217 length = array == null ? 0 : array.length; | |
| 2218 | |
| 2219 while (++index < length) { | |
| 2220 if (predicate(array[index], index, array)) { | |
| 2221 return true; | |
| 2222 } | |
| 2223 } | |
| 2224 return false; | |
| 2225 } | |
| 2226 | |
| 2227 /** | |
| 2228 * Gets the size of an ASCII `string`. | |
| 2229 * | |
| 2230 * @private | |
| 2231 * @param {string} string The string inspect. | |
| 2232 * @returns {number} Returns the string size. | |
| 2233 */ | |
| 2234 var asciiSize = baseProperty('length'); | |
| 2235 | |
| 2236 /** | |
| 2237 * Converts an ASCII `string` to an array. | |
| 2238 * | |
| 2239 * @private | |
| 2240 * @param {string} string The string to convert. | |
| 2241 * @returns {Array} Returns the converted array. | |
| 2242 */ | |
| 2243 function asciiToArray(string) { | |
| 2244 return string.split(''); | |
| 2245 } | |
| 2246 | |
| 2247 /** | |
| 2248 * Splits an ASCII `string` into an array of its words. | |
| 2249 * | |
| 2250 * @private | |
| 2251 * @param {string} The string to inspect. | |
| 2252 * @returns {Array} Returns the words of `string`. | |
| 2253 */ | |
| 2254 function asciiWords(string) { | |
| 2255 return string.match(reAsciiWord) || []; | |
| 2256 } | |
| 2257 | |
| 2258 /** | |
| 2259 * The base implementation of methods like `_.findKey` and `_.findLastKey`, | |
| 2260 * without support for iteratee shorthands, which iterates over `collection` | |
| 2261 * using `eachFunc`. | |
| 2262 * | |
| 2263 * @private | |
| 2264 * @param {Array|Object} collection The collection to inspect. | |
| 2265 * @param {Function} predicate The function invoked per iteration. | |
| 2266 * @param {Function} eachFunc The function to iterate over `collection`. | |
| 2267 * @returns {*} Returns the found element or its key, else `undefined`. | |
| 2268 */ | |
| 2269 function baseFindKey(collection, predicate, eachFunc) { | |
| 2270 var result; | |
| 2271 eachFunc(collection, function(value, key, collection) { | |
| 2272 if (predicate(value, key, collection)) { | |
| 2273 result = key; | |
| 2274 return false; | |
| 2275 } | |
| 2276 }); | |
| 2277 return result; | |
| 2278 } | |
| 2279 | |
| 2280 /** | |
| 2281 * The base implementation of `_.findIndex` and `_.findLastIndex` without | |
| 2282 * support for iteratee shorthands. | |
| 2283 * | |
| 2284 * @private | |
| 2285 * @param {Array} array The array to inspect. | |
| 2286 * @param {Function} predicate The function invoked per iteration. | |
| 2287 * @param {number} fromIndex The index to search from. | |
| 2288 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 2289 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 2290 */ | |
| 2291 function baseFindIndex(array, predicate, fromIndex, fromRight) { | |
| 2292 var length = array.length, | |
| 2293 index = fromIndex + (fromRight ? 1 : -1); | |
| 2294 | |
| 2295 while ((fromRight ? index-- : ++index < length)) { | |
| 2296 if (predicate(array[index], index, array)) { | |
| 2297 return index; | |
| 2298 } | |
| 2299 } | |
| 2300 return -1; | |
| 2301 } | |
| 2302 | |
| 2303 /** | |
| 2304 * The base implementation of `_.indexOf` without `fromIndex` bounds checks. | |
| 2305 * | |
| 2306 * @private | |
| 2307 * @param {Array} array The array to inspect. | |
| 2308 * @param {*} value The value to search for. | |
| 2309 * @param {number} fromIndex The index to search from. | |
| 2310 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 2311 */ | |
| 2312 function baseIndexOf(array, value, fromIndex) { | |
| 2313 return value === value | |
| 2314 ? strictIndexOf(array, value, fromIndex) | |
| 2315 : baseFindIndex(array, baseIsNaN, fromIndex); | |
| 2316 } | |
| 2317 | |
| 2318 /** | |
| 2319 * This function is like `baseIndexOf` except that it accepts a comparator. | |
| 2320 * | |
| 2321 * @private | |
| 2322 * @param {Array} array The array to inspect. | |
| 2323 * @param {*} value The value to search for. | |
| 2324 * @param {number} fromIndex The index to search from. | |
| 2325 * @param {Function} comparator The comparator invoked per element. | |
| 2326 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 2327 */ | |
| 2328 function baseIndexOfWith(array, value, fromIndex, comparator) { | |
| 2329 var index = fromIndex - 1, | |
| 2330 length = array.length; | |
| 2331 | |
| 2332 while (++index < length) { | |
| 2333 if (comparator(array[index], value)) { | |
| 2334 return index; | |
| 2335 } | |
| 2336 } | |
| 2337 return -1; | |
| 2338 } | |
| 2339 | |
| 2340 /** | |
| 2341 * The base implementation of `_.isNaN` without support for number objects. | |
| 2342 * | |
| 2343 * @private | |
| 2344 * @param {*} value The value to check. | |
| 2345 * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. | |
| 2346 */ | |
| 2347 function baseIsNaN(value) { | |
| 2348 return value !== value; | |
| 2349 } | |
| 2350 | |
| 2351 /** | |
| 2352 * The base implementation of `_.mean` and `_.meanBy` without support for | |
| 2353 * iteratee shorthands. | |
| 2354 * | |
| 2355 * @private | |
| 2356 * @param {Array} array The array to iterate over. | |
| 2357 * @param {Function} iteratee The function invoked per iteration. | |
| 2358 * @returns {number} Returns the mean. | |
| 2359 */ | |
| 2360 function baseMean(array, iteratee) { | |
| 2361 var length = array == null ? 0 : array.length; | |
| 2362 return length ? (baseSum(array, iteratee) / length) : NAN; | |
| 2363 } | |
| 2364 | |
| 2365 /** | |
| 2366 * The base implementation of `_.property` without support for deep paths. | |
| 2367 * | |
| 2368 * @private | |
| 2369 * @param {string} key The key of the property to get. | |
| 2370 * @returns {Function} Returns the new accessor function. | |
| 2371 */ | |
| 2372 function baseProperty(key) { | |
| 2373 return function(object) { | |
| 2374 return object == null ? undefined : object[key]; | |
| 2375 }; | |
| 2376 } | |
| 2377 | |
| 2378 /** | |
| 2379 * The base implementation of `_.propertyOf` without support for deep paths. | |
| 2380 * | |
| 2381 * @private | |
| 2382 * @param {Object} object The object to query. | |
| 2383 * @returns {Function} Returns the new accessor function. | |
| 2384 */ | |
| 2385 function basePropertyOf(object) { | |
| 2386 return function(key) { | |
| 2387 return object == null ? undefined : object[key]; | |
| 2388 }; | |
| 2389 } | |
| 2390 | |
| 2391 /** | |
| 2392 * The base implementation of `_.reduce` and `_.reduceRight`, without support | |
| 2393 * for iteratee shorthands, which iterates over `collection` using `eachFunc`. | |
| 2394 * | |
| 2395 * @private | |
| 2396 * @param {Array|Object} collection The collection to iterate over. | |
| 2397 * @param {Function} iteratee The function invoked per iteration. | |
| 2398 * @param {*} accumulator The initial value. | |
| 2399 * @param {boolean} initAccum Specify using the first or last element of | |
| 2400 * `collection` as the initial value. | |
| 2401 * @param {Function} eachFunc The function to iterate over `collection`. | |
| 2402 * @returns {*} Returns the accumulated value. | |
| 2403 */ | |
| 2404 function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) { | |
| 2405 eachFunc(collection, function(value, index, collection) { | |
| 2406 accumulator = initAccum | |
| 2407 ? (initAccum = false, value) | |
| 2408 : iteratee(accumulator, value, index, collection); | |
| 2409 }); | |
| 2410 return accumulator; | |
| 2411 } | |
| 2412 | |
| 2413 /** | |
| 2414 * The base implementation of `_.sortBy` which uses `comparer` to define the | |
| 2415 * sort order of `array` and replaces criteria objects with their corresponding | |
| 2416 * values. | |
| 2417 * | |
| 2418 * @private | |
| 2419 * @param {Array} array The array to sort. | |
| 2420 * @param {Function} comparer The function to define sort order. | |
| 2421 * @returns {Array} Returns `array`. | |
| 2422 */ | |
| 2423 function baseSortBy(array, comparer) { | |
| 2424 var length = array.length; | |
| 2425 | |
| 2426 array.sort(comparer); | |
| 2427 while (length--) { | |
| 2428 array[length] = array[length].value; | |
| 2429 } | |
| 2430 return array; | |
| 2431 } | |
| 2432 | |
| 2433 /** | |
| 2434 * The base implementation of `_.sum` and `_.sumBy` without support for | |
| 2435 * iteratee shorthands. | |
| 2436 * | |
| 2437 * @private | |
| 2438 * @param {Array} array The array to iterate over. | |
| 2439 * @param {Function} iteratee The function invoked per iteration. | |
| 2440 * @returns {number} Returns the sum. | |
| 2441 */ | |
| 2442 function baseSum(array, iteratee) { | |
| 2443 var result, | |
| 2444 index = -1, | |
| 2445 length = array.length; | |
| 2446 | |
| 2447 while (++index < length) { | |
| 2448 var current = iteratee(array[index]); | |
| 2449 if (current !== undefined) { | |
| 2450 result = result === undefined ? current : (result + current); | |
| 2451 } | |
| 2452 } | |
| 2453 return result; | |
| 2454 } | |
| 2455 | |
| 2456 /** | |
| 2457 * The base implementation of `_.times` without support for iteratee shorthands | |
| 2458 * or max array length checks. | |
| 2459 * | |
| 2460 * @private | |
| 2461 * @param {number} n The number of times to invoke `iteratee`. | |
| 2462 * @param {Function} iteratee The function invoked per iteration. | |
| 2463 * @returns {Array} Returns the array of results. | |
| 2464 */ | |
| 2465 function baseTimes(n, iteratee) { | |
| 2466 var index = -1, | |
| 2467 result = Array(n); | |
| 2468 | |
| 2469 while (++index < n) { | |
| 2470 result[index] = iteratee(index); | |
| 2471 } | |
| 2472 return result; | |
| 2473 } | |
| 2474 | |
| 2475 /** | |
| 2476 * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array | |
| 2477 * of key-value pairs for `object` corresponding to the property names of `props`. | |
| 2478 * | |
| 2479 * @private | |
| 2480 * @param {Object} object The object to query. | |
| 2481 * @param {Array} props The property names to get values for. | |
| 2482 * @returns {Object} Returns the key-value pairs. | |
| 2483 */ | |
| 2484 function baseToPairs(object, props) { | |
| 2485 return arrayMap(props, function(key) { | |
| 2486 return [key, object[key]]; | |
| 2487 }); | |
| 2488 } | |
| 2489 | |
| 2490 /** | |
| 2491 * The base implementation of `_.unary` without support for storing metadata. | |
| 2492 * | |
| 2493 * @private | |
| 2494 * @param {Function} func The function to cap arguments for. | |
| 2495 * @returns {Function} Returns the new capped function. | |
| 2496 */ | |
| 2497 function baseUnary(func) { | |
| 2498 return function(value) { | |
| 2499 return func(value); | |
| 2500 }; | |
| 2501 } | |
| 2502 | |
| 2503 /** | |
| 2504 * The base implementation of `_.values` and `_.valuesIn` which creates an | |
| 2505 * array of `object` property values corresponding to the property names | |
| 2506 * of `props`. | |
| 2507 * | |
| 2508 * @private | |
| 2509 * @param {Object} object The object to query. | |
| 2510 * @param {Array} props The property names to get values for. | |
| 2511 * @returns {Object} Returns the array of property values. | |
| 2512 */ | |
| 2513 function baseValues(object, props) { | |
| 2514 return arrayMap(props, function(key) { | |
| 2515 return object[key]; | |
| 2516 }); | |
| 2517 } | |
| 2518 | |
| 2519 /** | |
| 2520 * Checks if a `cache` value for `key` exists. | |
| 2521 * | |
| 2522 * @private | |
| 2523 * @param {Object} cache The cache to query. | |
| 2524 * @param {string} key The key of the entry to check. | |
| 2525 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. | |
| 2526 */ | |
| 2527 function cacheHas(cache, key) { | |
| 2528 return cache.has(key); | |
| 2529 } | |
| 2530 | |
| 2531 /** | |
| 2532 * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol | |
| 2533 * that is not found in the character symbols. | |
| 2534 * | |
| 2535 * @private | |
| 2536 * @param {Array} strSymbols The string symbols to inspect. | |
| 2537 * @param {Array} chrSymbols The character symbols to find. | |
| 2538 * @returns {number} Returns the index of the first unmatched string symbol. | |
| 2539 */ | |
| 2540 function charsStartIndex(strSymbols, chrSymbols) { | |
| 2541 var index = -1, | |
| 2542 length = strSymbols.length; | |
| 2543 | |
| 2544 while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} | |
| 2545 return index; | |
| 2546 } | |
| 2547 | |
| 2548 /** | |
| 2549 * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol | |
| 2550 * that is not found in the character symbols. | |
| 2551 * | |
| 2552 * @private | |
| 2553 * @param {Array} strSymbols The string symbols to inspect. | |
| 2554 * @param {Array} chrSymbols The character symbols to find. | |
| 2555 * @returns {number} Returns the index of the last unmatched string symbol. | |
| 2556 */ | |
| 2557 function charsEndIndex(strSymbols, chrSymbols) { | |
| 2558 var index = strSymbols.length; | |
| 2559 | |
| 2560 while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} | |
| 2561 return index; | |
| 2562 } | |
| 2563 | |
| 2564 /** | |
| 2565 * Gets the number of `placeholder` occurrences in `array`. | |
| 2566 * | |
| 2567 * @private | |
| 2568 * @param {Array} array The array to inspect. | |
| 2569 * @param {*} placeholder The placeholder to search for. | |
| 2570 * @returns {number} Returns the placeholder count. | |
| 2571 */ | |
| 2572 function countHolders(array, placeholder) { | |
| 2573 var length = array.length, | |
| 2574 result = 0; | |
| 2575 | |
| 2576 while (length--) { | |
| 2577 if (array[length] === placeholder) { | |
| 2578 ++result; | |
| 2579 } | |
| 2580 } | |
| 2581 return result; | |
| 2582 } | |
| 2583 | |
| 2584 /** | |
| 2585 * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A | |
| 2586 * letters to basic Latin letters. | |
| 2587 * | |
| 2588 * @private | |
| 2589 * @param {string} letter The matched letter to deburr. | |
| 2590 * @returns {string} Returns the deburred letter. | |
| 2591 */ | |
| 2592 var deburrLetter = basePropertyOf(deburredLetters); | |
| 2593 | |
| 2594 /** | |
| 2595 * Used by `_.escape` to convert characters to HTML entities. | |
| 2596 * | |
| 2597 * @private | |
| 2598 * @param {string} chr The matched character to escape. | |
| 2599 * @returns {string} Returns the escaped character. | |
| 2600 */ | |
| 2601 var escapeHtmlChar = basePropertyOf(htmlEscapes); | |
| 2602 | |
| 2603 /** | |
| 2604 * Used by `_.template` to escape characters for inclusion in compiled string literals. | |
| 2605 * | |
| 2606 * @private | |
| 2607 * @param {string} chr The matched character to escape. | |
| 2608 * @returns {string} Returns the escaped character. | |
| 2609 */ | |
| 2610 function escapeStringChar(chr) { | |
| 2611 return '\\' + stringEscapes[chr]; | |
| 2612 } | |
| 2613 | |
| 2614 /** | |
| 2615 * Gets the value at `key` of `object`. | |
| 2616 * | |
| 2617 * @private | |
| 2618 * @param {Object} [object] The object to query. | |
| 2619 * @param {string} key The key of the property to get. | |
| 2620 * @returns {*} Returns the property value. | |
| 2621 */ | |
| 2622 function getValue(object, key) { | |
| 2623 return object == null ? undefined : object[key]; | |
| 2624 } | |
| 2625 | |
| 2626 /** | |
| 2627 * Checks if `string` contains Unicode symbols. | |
| 2628 * | |
| 2629 * @private | |
| 2630 * @param {string} string The string to inspect. | |
| 2631 * @returns {boolean} Returns `true` if a symbol is found, else `false`. | |
| 2632 */ | |
| 2633 function hasUnicode(string) { | |
| 2634 return reHasUnicode.test(string); | |
| 2635 } | |
| 2636 | |
| 2637 /** | |
| 2638 * Checks if `string` contains a word composed of Unicode symbols. | |
| 2639 * | |
| 2640 * @private | |
| 2641 * @param {string} string The string to inspect. | |
| 2642 * @returns {boolean} Returns `true` if a word is found, else `false`. | |
| 2643 */ | |
| 2644 function hasUnicodeWord(string) { | |
| 2645 return reHasUnicodeWord.test(string); | |
| 2646 } | |
| 2647 | |
| 2648 /** | |
| 2649 * Converts `iterator` to an array. | |
| 2650 * | |
| 2651 * @private | |
| 2652 * @param {Object} iterator The iterator to convert. | |
| 2653 * @returns {Array} Returns the converted array. | |
| 2654 */ | |
| 2655 function iteratorToArray(iterator) { | |
| 2656 var data, | |
| 2657 result = []; | |
| 2658 | |
| 2659 while (!(data = iterator.next()).done) { | |
| 2660 result.push(data.value); | |
| 2661 } | |
| 2662 return result; | |
| 2663 } | |
| 2664 | |
| 2665 /** | |
| 2666 * Converts `map` to its key-value pairs. | |
| 2667 * | |
| 2668 * @private | |
| 2669 * @param {Object} map The map to convert. | |
| 2670 * @returns {Array} Returns the key-value pairs. | |
| 2671 */ | |
| 2672 function mapToArray(map) { | |
| 2673 var index = -1, | |
| 2674 result = Array(map.size); | |
| 2675 | |
| 2676 map.forEach(function(value, key) { | |
| 2677 result[++index] = [key, value]; | |
| 2678 }); | |
| 2679 return result; | |
| 2680 } | |
| 2681 | |
| 2682 /** | |
| 2683 * Creates a unary function that invokes `func` with its argument transformed. | |
| 2684 * | |
| 2685 * @private | |
| 2686 * @param {Function} func The function to wrap. | |
| 2687 * @param {Function} transform The argument transform. | |
| 2688 * @returns {Function} Returns the new function. | |
| 2689 */ | |
| 2690 function overArg(func, transform) { | |
| 2691 return function(arg) { | |
| 2692 return func(transform(arg)); | |
| 2693 }; | |
| 2694 } | |
| 2695 | |
| 2696 /** | |
| 2697 * Replaces all `placeholder` elements in `array` with an internal placeholder | |
| 2698 * and returns an array of their indexes. | |
| 2699 * | |
| 2700 * @private | |
| 2701 * @param {Array} array The array to modify. | |
| 2702 * @param {*} placeholder The placeholder to replace. | |
| 2703 * @returns {Array} Returns the new array of placeholder indexes. | |
| 2704 */ | |
| 2705 function replaceHolders(array, placeholder) { | |
| 2706 var index = -1, | |
| 2707 length = array.length, | |
| 2708 resIndex = 0, | |
| 2709 result = []; | |
| 2710 | |
| 2711 while (++index < length) { | |
| 2712 var value = array[index]; | |
| 2713 if (value === placeholder || value === PLACEHOLDER) { | |
| 2714 array[index] = PLACEHOLDER; | |
| 2715 result[resIndex++] = index; | |
| 2716 } | |
| 2717 } | |
| 2718 return result; | |
| 2719 } | |
| 2720 | |
| 2721 /** | |
| 2722 * Converts `set` to an array of its values. | |
| 2723 * | |
| 2724 * @private | |
| 2725 * @param {Object} set The set to convert. | |
| 2726 * @returns {Array} Returns the values. | |
| 2727 */ | |
| 2728 function setToArray(set) { | |
| 2729 var index = -1, | |
| 2730 result = Array(set.size); | |
| 2731 | |
| 2732 set.forEach(function(value) { | |
| 2733 result[++index] = value; | |
| 2734 }); | |
| 2735 return result; | |
| 2736 } | |
| 2737 | |
| 2738 /** | |
| 2739 * Converts `set` to its value-value pairs. | |
| 2740 * | |
| 2741 * @private | |
| 2742 * @param {Object} set The set to convert. | |
| 2743 * @returns {Array} Returns the value-value pairs. | |
| 2744 */ | |
| 2745 function setToPairs(set) { | |
| 2746 var index = -1, | |
| 2747 result = Array(set.size); | |
| 2748 | |
| 2749 set.forEach(function(value) { | |
| 2750 result[++index] = [value, value]; | |
| 2751 }); | |
| 2752 return result; | |
| 2753 } | |
| 2754 | |
| 2755 /** | |
| 2756 * A specialized version of `_.indexOf` which performs strict equality | |
| 2757 * comparisons of values, i.e. `===`. | |
| 2758 * | |
| 2759 * @private | |
| 2760 * @param {Array} array The array to inspect. | |
| 2761 * @param {*} value The value to search for. | |
| 2762 * @param {number} fromIndex The index to search from. | |
| 2763 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 2764 */ | |
| 2765 function strictIndexOf(array, value, fromIndex) { | |
| 2766 var index = fromIndex - 1, | |
| 2767 length = array.length; | |
| 2768 | |
| 2769 while (++index < length) { | |
| 2770 if (array[index] === value) { | |
| 2771 return index; | |
| 2772 } | |
| 2773 } | |
| 2774 return -1; | |
| 2775 } | |
| 2776 | |
| 2777 /** | |
| 2778 * A specialized version of `_.lastIndexOf` which performs strict equality | |
| 2779 * comparisons of values, i.e. `===`. | |
| 2780 * | |
| 2781 * @private | |
| 2782 * @param {Array} array The array to inspect. | |
| 2783 * @param {*} value The value to search for. | |
| 2784 * @param {number} fromIndex The index to search from. | |
| 2785 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 2786 */ | |
| 2787 function strictLastIndexOf(array, value, fromIndex) { | |
| 2788 var index = fromIndex + 1; | |
| 2789 while (index--) { | |
| 2790 if (array[index] === value) { | |
| 2791 return index; | |
| 2792 } | |
| 2793 } | |
| 2794 return index; | |
| 2795 } | |
| 2796 | |
| 2797 /** | |
| 2798 * Gets the number of symbols in `string`. | |
| 2799 * | |
| 2800 * @private | |
| 2801 * @param {string} string The string to inspect. | |
| 2802 * @returns {number} Returns the string size. | |
| 2803 */ | |
| 2804 function stringSize(string) { | |
| 2805 return hasUnicode(string) | |
| 2806 ? unicodeSize(string) | |
| 2807 : asciiSize(string); | |
| 2808 } | |
| 2809 | |
| 2810 /** | |
| 2811 * Converts `string` to an array. | |
| 2812 * | |
| 2813 * @private | |
| 2814 * @param {string} string The string to convert. | |
| 2815 * @returns {Array} Returns the converted array. | |
| 2816 */ | |
| 2817 function stringToArray(string) { | |
| 2818 return hasUnicode(string) | |
| 2819 ? unicodeToArray(string) | |
| 2820 : asciiToArray(string); | |
| 2821 } | |
| 2822 | |
| 2823 /** | |
| 2824 * Used by `_.unescape` to convert HTML entities to characters. | |
| 2825 * | |
| 2826 * @private | |
| 2827 * @param {string} chr The matched character to unescape. | |
| 2828 * @returns {string} Returns the unescaped character. | |
| 2829 */ | |
| 2830 var unescapeHtmlChar = basePropertyOf(htmlUnescapes); | |
| 2831 | |
| 2832 /** | |
| 2833 * Gets the size of a Unicode `string`. | |
| 2834 * | |
| 2835 * @private | |
| 2836 * @param {string} string The string inspect. | |
| 2837 * @returns {number} Returns the string size. | |
| 2838 */ | |
| 2839 function unicodeSize(string) { | |
| 2840 var result = reUnicode.lastIndex = 0; | |
| 2841 while (reUnicode.test(string)) { | |
| 2842 ++result; | |
| 2843 } | |
| 2844 return result; | |
| 2845 } | |
| 2846 | |
| 2847 /** | |
| 2848 * Converts a Unicode `string` to an array. | |
| 2849 * | |
| 2850 * @private | |
| 2851 * @param {string} string The string to convert. | |
| 2852 * @returns {Array} Returns the converted array. | |
| 2853 */ | |
| 2854 function unicodeToArray(string) { | |
| 2855 return string.match(reUnicode) || []; | |
| 2856 } | |
| 2857 | |
| 2858 /** | |
| 2859 * Splits a Unicode `string` into an array of its words. | |
| 2860 * | |
| 2861 * @private | |
| 2862 * @param {string} The string to inspect. | |
| 2863 * @returns {Array} Returns the words of `string`. | |
| 2864 */ | |
| 2865 function unicodeWords(string) { | |
| 2866 return string.match(reUnicodeWord) || []; | |
| 2867 } | |
| 2868 | |
| 2869 /*--------------------------------------------------------------------------*/ | |
| 2870 | |
| 2871 /** | |
| 2872 * Create a new pristine `lodash` function using the `context` object. | |
| 2873 * | |
| 2874 * @static | |
| 2875 * @memberOf _ | |
| 2876 * @since 1.1.0 | |
| 2877 * @category Util | |
| 2878 * @param {Object} [context=root] The context object. | |
| 2879 * @returns {Function} Returns a new `lodash` function. | |
| 2880 * @example | |
| 2881 * | |
| 2882 * _.mixin({ 'foo': _.constant('foo') }); | |
| 2883 * | |
| 2884 * var lodash = _.runInContext(); | |
| 2885 * lodash.mixin({ 'bar': lodash.constant('bar') }); | |
| 2886 * | |
| 2887 * _.isFunction(_.foo); | |
| 2888 * // => true | |
| 2889 * _.isFunction(_.bar); | |
| 2890 * // => false | |
| 2891 * | |
| 2892 * lodash.isFunction(lodash.foo); | |
| 2893 * // => false | |
| 2894 * lodash.isFunction(lodash.bar); | |
| 2895 * // => true | |
| 2896 * | |
| 2897 * // Create a suped-up `defer` in Node.js. | |
| 2898 * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer; | |
| 2899 */ | |
| 2900 var runInContext = (function runInContext(context) { | |
| 2901 context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps)); | |
| 2902 | |
| 2903 /** Built-in constructor references. */ | |
| 2904 var Array = context.Array, | |
| 2905 Date = context.Date, | |
| 2906 Error = context.Error, | |
| 2907 Function = context.Function, | |
| 2908 Math = context.Math, | |
| 2909 Object = context.Object, | |
| 2910 RegExp = context.RegExp, | |
| 2911 String = context.String, | |
| 2912 TypeError = context.TypeError; | |
| 2913 | |
| 2914 /** Used for built-in method references. */ | |
| 2915 var arrayProto = Array.prototype, | |
| 2916 funcProto = Function.prototype, | |
| 2917 objectProto = Object.prototype; | |
| 2918 | |
| 2919 /** Used to detect overreaching core-js shims. */ | |
| 2920 var coreJsData = context['__core-js_shared__']; | |
| 2921 | |
| 2922 /** Used to resolve the decompiled source of functions. */ | |
| 2923 var funcToString = funcProto.toString; | |
| 2924 | |
| 2925 /** Used to check objects for own properties. */ | |
| 2926 var hasOwnProperty = objectProto.hasOwnProperty; | |
| 2927 | |
| 2928 /** Used to generate unique IDs. */ | |
| 2929 var idCounter = 0; | |
| 2930 | |
| 2931 /** Used to detect methods masquerading as native. */ | |
| 2932 var maskSrcKey = (function() { | |
| 2933 var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || ''); | |
| 2934 return uid ? ('Symbol(src)_1.' + uid) : ''; | |
| 2935 }()); | |
| 2936 | |
| 2937 /** | |
| 2938 * Used to resolve the | |
| 2939 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring) | |
| 2940 * of values. | |
| 2941 */ | |
| 2942 var nativeObjectToString = objectProto.toString; | |
| 2943 | |
| 2944 /** Used to infer the `Object` constructor. */ | |
| 2945 var objectCtorString = funcToString.call(Object); | |
| 2946 | |
| 2947 /** Used to restore the original `_` reference in `_.noConflict`. */ | |
| 2948 var oldDash = root._; | |
| 2949 | |
| 2950 /** Used to detect if a method is native. */ | |
| 2951 var reIsNative = RegExp('^' + | |
| 2952 funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&') | |
| 2953 .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' | |
| 2954 ); | |
| 2955 | |
| 2956 /** Built-in value references. */ | |
| 2957 var Buffer = moduleExports ? context.Buffer : undefined, | |
| 2958 Symbol = context.Symbol, | |
| 2959 Uint8Array = context.Uint8Array, | |
| 2960 allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined, | |
| 2961 getPrototype = overArg(Object.getPrototypeOf, Object), | |
| 2962 objectCreate = Object.create, | |
| 2963 propertyIsEnumerable = objectProto.propertyIsEnumerable, | |
| 2964 splice = arrayProto.splice, | |
| 2965 spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined, | |
| 2966 symIterator = Symbol ? Symbol.iterator : undefined, | |
| 2967 symToStringTag = Symbol ? Symbol.toStringTag : undefined; | |
| 2968 | |
| 2969 var defineProperty = (function() { | |
| 2970 try { | |
| 2971 var func = getNative(Object, 'defineProperty'); | |
| 2972 func({}, '', {}); | |
| 2973 return func; | |
| 2974 } catch (e) {} | |
| 2975 }()); | |
| 2976 | |
| 2977 /** Mocked built-ins. */ | |
| 2978 var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout, | |
| 2979 ctxNow = Date && Date.now !== root.Date.now && Date.now, | |
| 2980 ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout; | |
| 2981 | |
| 2982 /* Built-in method references for those with the same name as other `lodash` methods. */ | |
| 2983 var nativeCeil = Math.ceil, | |
| 2984 nativeFloor = Math.floor, | |
| 2985 nativeGetSymbols = Object.getOwnPropertySymbols, | |
| 2986 nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined, | |
| 2987 nativeIsFinite = context.isFinite, | |
| 2988 nativeJoin = arrayProto.join, | |
| 2989 nativeKeys = overArg(Object.keys, Object), | |
| 2990 nativeMax = Math.max, | |
| 2991 nativeMin = Math.min, | |
| 2992 nativeNow = Date.now, | |
| 2993 nativeParseInt = context.parseInt, | |
| 2994 nativeRandom = Math.random, | |
| 2995 nativeReverse = arrayProto.reverse; | |
| 2996 | |
| 2997 /* Built-in method references that are verified to be native. */ | |
| 2998 var DataView = getNative(context, 'DataView'), | |
| 2999 Map = getNative(context, 'Map'), | |
| 3000 Promise = getNative(context, 'Promise'), | |
| 3001 Set = getNative(context, 'Set'), | |
| 3002 WeakMap = getNative(context, 'WeakMap'), | |
| 3003 nativeCreate = getNative(Object, 'create'); | |
| 3004 | |
| 3005 /** Used to store function metadata. */ | |
| 3006 var metaMap = WeakMap && new WeakMap; | |
| 3007 | |
| 3008 /** Used to lookup unminified function names. */ | |
| 3009 var realNames = {}; | |
| 3010 | |
| 3011 /** Used to detect maps, sets, and weakmaps. */ | |
| 3012 var dataViewCtorString = toSource(DataView), | |
| 3013 mapCtorString = toSource(Map), | |
| 3014 promiseCtorString = toSource(Promise), | |
| 3015 setCtorString = toSource(Set), | |
| 3016 weakMapCtorString = toSource(WeakMap); | |
| 3017 | |
| 3018 /** Used to convert symbols to primitives and strings. */ | |
| 3019 var symbolProto = Symbol ? Symbol.prototype : undefined, | |
| 3020 symbolValueOf = symbolProto ? symbolProto.valueOf : undefined, | |
| 3021 symbolToString = symbolProto ? symbolProto.toString : undefined; | |
| 3022 | |
| 3023 /*------------------------------------------------------------------------*/ | |
| 3024 | |
| 3025 /** | |
| 3026 * Creates a `lodash` object which wraps `value` to enable implicit method | |
| 3027 * chain sequences. Methods that operate on and return arrays, collections, | |
| 3028 * and functions can be chained together. Methods that retrieve a single value | |
| 3029 * or may return a primitive value will automatically end the chain sequence | |
| 3030 * and return the unwrapped value. Otherwise, the value must be unwrapped | |
| 3031 * with `_#value`. | |
| 3032 * | |
| 3033 * Explicit chain sequences, which must be unwrapped with `_#value`, may be | |
| 3034 * enabled using `_.chain`. | |
| 3035 * | |
| 3036 * The execution of chained methods is lazy, that is, it's deferred until | |
| 3037 * `_#value` is implicitly or explicitly called. | |
| 3038 * | |
| 3039 * Lazy evaluation allows several methods to support shortcut fusion. | |
| 3040 * Shortcut fusion is an optimization to merge iteratee calls; this avoids | |
| 3041 * the creation of intermediate arrays and can greatly reduce the number of | |
| 3042 * iteratee executions. Sections of a chain sequence qualify for shortcut | |
| 3043 * fusion if the section is applied to an array and iteratees accept only | |
| 3044 * one argument. The heuristic for whether a section qualifies for shortcut | |
| 3045 * fusion is subject to change. | |
| 3046 * | |
| 3047 * Chaining is supported in custom builds as long as the `_#value` method is | |
| 3048 * directly or indirectly included in the build. | |
| 3049 * | |
| 3050 * In addition to lodash methods, wrappers have `Array` and `String` methods. | |
| 3051 * | |
| 3052 * The wrapper `Array` methods are: | |
| 3053 * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift` | |
| 3054 * | |
| 3055 * The wrapper `String` methods are: | |
| 3056 * `replace` and `split` | |
| 3057 * | |
| 3058 * The wrapper methods that support shortcut fusion are: | |
| 3059 * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`, | |
| 3060 * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`, | |
| 3061 * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray` | |
| 3062 * | |
| 3063 * The chainable wrapper methods are: | |
| 3064 * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`, | |
| 3065 * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`, | |
| 3066 * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`, | |
| 3067 * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`, | |
| 3068 * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`, | |
| 3069 * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`, | |
| 3070 * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`, | |
| 3071 * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`, | |
| 3072 * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`, | |
| 3073 * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`, | |
| 3074 * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`, | |
| 3075 * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`, | |
| 3076 * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`, | |
| 3077 * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`, | |
| 3078 * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`, | |
| 3079 * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`, | |
| 3080 * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`, | |
| 3081 * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`, | |
| 3082 * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`, | |
| 3083 * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`, | |
| 3084 * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`, | |
| 3085 * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`, | |
| 3086 * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`, | |
| 3087 * `zipObject`, `zipObjectDeep`, and `zipWith` | |
| 3088 * | |
| 3089 * The wrapper methods that are **not** chainable by default are: | |
| 3090 * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`, | |
| 3091 * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`, | |
| 3092 * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`, | |
| 3093 * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`, | |
| 3094 * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`, | |
| 3095 * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`, | |
| 3096 * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`, | |
| 3097 * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`, | |
| 3098 * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`, | |
| 3099 * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`, | |
| 3100 * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`, | |
| 3101 * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`, | |
| 3102 * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`, | |
| 3103 * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`, | |
| 3104 * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`, | |
| 3105 * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`, | |
| 3106 * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`, | |
| 3107 * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`, | |
| 3108 * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`, | |
| 3109 * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`, | |
| 3110 * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`, | |
| 3111 * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`, | |
| 3112 * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`, | |
| 3113 * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`, | |
| 3114 * `upperFirst`, `value`, and `words` | |
| 3115 * | |
| 3116 * @name _ | |
| 3117 * @constructor | |
| 3118 * @category Seq | |
| 3119 * @param {*} value The value to wrap in a `lodash` instance. | |
| 3120 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 3121 * @example | |
| 3122 * | |
| 3123 * function square(n) { | |
| 3124 * return n * n; | |
| 3125 * } | |
| 3126 * | |
| 3127 * var wrapped = _([1, 2, 3]); | |
| 3128 * | |
| 3129 * // Returns an unwrapped value. | |
| 3130 * wrapped.reduce(_.add); | |
| 3131 * // => 6 | |
| 3132 * | |
| 3133 * // Returns a wrapped value. | |
| 3134 * var squares = wrapped.map(square); | |
| 3135 * | |
| 3136 * _.isArray(squares); | |
| 3137 * // => false | |
| 3138 * | |
| 3139 * _.isArray(squares.value()); | |
| 3140 * // => true | |
| 3141 */ | |
| 3142 function lodash(value) { | |
| 3143 if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) { | |
| 3144 if (value instanceof LodashWrapper) { | |
| 3145 return value; | |
| 3146 } | |
| 3147 if (hasOwnProperty.call(value, '__wrapped__')) { | |
| 3148 return wrapperClone(value); | |
| 3149 } | |
| 3150 } | |
| 3151 return new LodashWrapper(value); | |
| 3152 } | |
| 3153 | |
| 3154 /** | |
| 3155 * The base implementation of `_.create` without support for assigning | |
| 3156 * properties to the created object. | |
| 3157 * | |
| 3158 * @private | |
| 3159 * @param {Object} proto The object to inherit from. | |
| 3160 * @returns {Object} Returns the new object. | |
| 3161 */ | |
| 3162 var baseCreate = (function() { | |
| 3163 function object() {} | |
| 3164 return function(proto) { | |
| 3165 if (!isObject(proto)) { | |
| 3166 return {}; | |
| 3167 } | |
| 3168 if (objectCreate) { | |
| 3169 return objectCreate(proto); | |
| 3170 } | |
| 3171 object.prototype = proto; | |
| 3172 var result = new object; | |
| 3173 object.prototype = undefined; | |
| 3174 return result; | |
| 3175 }; | |
| 3176 }()); | |
| 3177 | |
| 3178 /** | |
| 3179 * The function whose prototype chain sequence wrappers inherit from. | |
| 3180 * | |
| 3181 * @private | |
| 3182 */ | |
| 3183 function baseLodash() { | |
| 3184 // No operation performed. | |
| 3185 } | |
| 3186 | |
| 3187 /** | |
| 3188 * The base constructor for creating `lodash` wrapper objects. | |
| 3189 * | |
| 3190 * @private | |
| 3191 * @param {*} value The value to wrap. | |
| 3192 * @param {boolean} [chainAll] Enable explicit method chain sequences. | |
| 3193 */ | |
| 3194 function LodashWrapper(value, chainAll) { | |
| 3195 this.__wrapped__ = value; | |
| 3196 this.__actions__ = []; | |
| 3197 this.__chain__ = !!chainAll; | |
| 3198 this.__index__ = 0; | |
| 3199 this.__values__ = undefined; | |
| 3200 } | |
| 3201 | |
| 3202 /** | |
| 3203 * By default, the template delimiters used by lodash are like those in | |
| 3204 * embedded Ruby (ERB) as well as ES2015 template strings. Change the | |
| 3205 * following template settings to use alternative delimiters. | |
| 3206 * | |
| 3207 * @static | |
| 3208 * @memberOf _ | |
| 3209 * @type {Object} | |
| 3210 */ | |
| 3211 lodash.templateSettings = { | |
| 3212 | |
| 3213 /** | |
| 3214 * Used to detect `data` property values to be HTML-escaped. | |
| 3215 * | |
| 3216 * @memberOf _.templateSettings | |
| 3217 * @type {RegExp} | |
| 3218 */ | |
| 3219 'escape': reEscape, | |
| 3220 | |
| 3221 /** | |
| 3222 * Used to detect code to be evaluated. | |
| 3223 * | |
| 3224 * @memberOf _.templateSettings | |
| 3225 * @type {RegExp} | |
| 3226 */ | |
| 3227 'evaluate': reEvaluate, | |
| 3228 | |
| 3229 /** | |
| 3230 * Used to detect `data` property values to inject. | |
| 3231 * | |
| 3232 * @memberOf _.templateSettings | |
| 3233 * @type {RegExp} | |
| 3234 */ | |
| 3235 'interpolate': reInterpolate, | |
| 3236 | |
| 3237 /** | |
| 3238 * Used to reference the data object in the template text. | |
| 3239 * | |
| 3240 * @memberOf _.templateSettings | |
| 3241 * @type {string} | |
| 3242 */ | |
| 3243 'variable': '', | |
| 3244 | |
| 3245 /** | |
| 3246 * Used to import variables into the compiled template. | |
| 3247 * | |
| 3248 * @memberOf _.templateSettings | |
| 3249 * @type {Object} | |
| 3250 */ | |
| 3251 'imports': { | |
| 3252 | |
| 3253 /** | |
| 3254 * A reference to the `lodash` function. | |
| 3255 * | |
| 3256 * @memberOf _.templateSettings.imports | |
| 3257 * @type {Function} | |
| 3258 */ | |
| 3259 '_': lodash | |
| 3260 } | |
| 3261 }; | |
| 3262 | |
| 3263 // Ensure wrappers are instances of `baseLodash`. | |
| 3264 lodash.prototype = baseLodash.prototype; | |
| 3265 lodash.prototype.constructor = lodash; | |
| 3266 | |
| 3267 LodashWrapper.prototype = baseCreate(baseLodash.prototype); | |
| 3268 LodashWrapper.prototype.constructor = LodashWrapper; | |
| 3269 | |
| 3270 /*------------------------------------------------------------------------*/ | |
| 3271 | |
| 3272 /** | |
| 3273 * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation. | |
| 3274 * | |
| 3275 * @private | |
| 3276 * @constructor | |
| 3277 * @param {*} value The value to wrap. | |
| 3278 */ | |
| 3279 function LazyWrapper(value) { | |
| 3280 this.__wrapped__ = value; | |
| 3281 this.__actions__ = []; | |
| 3282 this.__dir__ = 1; | |
| 3283 this.__filtered__ = false; | |
| 3284 this.__iteratees__ = []; | |
| 3285 this.__takeCount__ = MAX_ARRAY_LENGTH; | |
| 3286 this.__views__ = []; | |
| 3287 } | |
| 3288 | |
| 3289 /** | |
| 3290 * Creates a clone of the lazy wrapper object. | |
| 3291 * | |
| 3292 * @private | |
| 3293 * @name clone | |
| 3294 * @memberOf LazyWrapper | |
| 3295 * @returns {Object} Returns the cloned `LazyWrapper` object. | |
| 3296 */ | |
| 3297 function lazyClone() { | |
| 3298 var result = new LazyWrapper(this.__wrapped__); | |
| 3299 result.__actions__ = copyArray(this.__actions__); | |
| 3300 result.__dir__ = this.__dir__; | |
| 3301 result.__filtered__ = this.__filtered__; | |
| 3302 result.__iteratees__ = copyArray(this.__iteratees__); | |
| 3303 result.__takeCount__ = this.__takeCount__; | |
| 3304 result.__views__ = copyArray(this.__views__); | |
| 3305 return result; | |
| 3306 } | |
| 3307 | |
| 3308 /** | |
| 3309 * Reverses the direction of lazy iteration. | |
| 3310 * | |
| 3311 * @private | |
| 3312 * @name reverse | |
| 3313 * @memberOf LazyWrapper | |
| 3314 * @returns {Object} Returns the new reversed `LazyWrapper` object. | |
| 3315 */ | |
| 3316 function lazyReverse() { | |
| 3317 if (this.__filtered__) { | |
| 3318 var result = new LazyWrapper(this); | |
| 3319 result.__dir__ = -1; | |
| 3320 result.__filtered__ = true; | |
| 3321 } else { | |
| 3322 result = this.clone(); | |
| 3323 result.__dir__ *= -1; | |
| 3324 } | |
| 3325 return result; | |
| 3326 } | |
| 3327 | |
| 3328 /** | |
| 3329 * Extracts the unwrapped value from its lazy wrapper. | |
| 3330 * | |
| 3331 * @private | |
| 3332 * @name value | |
| 3333 * @memberOf LazyWrapper | |
| 3334 * @returns {*} Returns the unwrapped value. | |
| 3335 */ | |
| 3336 function lazyValue() { | |
| 3337 var array = this.__wrapped__.value(), | |
| 3338 dir = this.__dir__, | |
| 3339 isArr = isArray(array), | |
| 3340 isRight = dir < 0, | |
| 3341 arrLength = isArr ? array.length : 0, | |
| 3342 view = getView(0, arrLength, this.__views__), | |
| 3343 start = view.start, | |
| 3344 end = view.end, | |
| 3345 length = end - start, | |
| 3346 index = isRight ? end : (start - 1), | |
| 3347 iteratees = this.__iteratees__, | |
| 3348 iterLength = iteratees.length, | |
| 3349 resIndex = 0, | |
| 3350 takeCount = nativeMin(length, this.__takeCount__); | |
| 3351 | |
| 3352 if (!isArr || (!isRight && arrLength == length && takeCount == length)) { | |
| 3353 return baseWrapperValue(array, this.__actions__); | |
| 3354 } | |
| 3355 var result = []; | |
| 3356 | |
| 3357 outer: | |
| 3358 while (length-- && resIndex < takeCount) { | |
| 3359 index += dir; | |
| 3360 | |
| 3361 var iterIndex = -1, | |
| 3362 value = array[index]; | |
| 3363 | |
| 3364 while (++iterIndex < iterLength) { | |
| 3365 var data = iteratees[iterIndex], | |
| 3366 iteratee = data.iteratee, | |
| 3367 type = data.type, | |
| 3368 computed = iteratee(value); | |
| 3369 | |
| 3370 if (type == LAZY_MAP_FLAG) { | |
| 3371 value = computed; | |
| 3372 } else if (!computed) { | |
| 3373 if (type == LAZY_FILTER_FLAG) { | |
| 3374 continue outer; | |
| 3375 } else { | |
| 3376 break outer; | |
| 3377 } | |
| 3378 } | |
| 3379 } | |
| 3380 result[resIndex++] = value; | |
| 3381 } | |
| 3382 return result; | |
| 3383 } | |
| 3384 | |
| 3385 // Ensure `LazyWrapper` is an instance of `baseLodash`. | |
| 3386 LazyWrapper.prototype = baseCreate(baseLodash.prototype); | |
| 3387 LazyWrapper.prototype.constructor = LazyWrapper; | |
| 3388 | |
| 3389 /*------------------------------------------------------------------------*/ | |
| 3390 | |
| 3391 /** | |
| 3392 * Creates a hash object. | |
| 3393 * | |
| 3394 * @private | |
| 3395 * @constructor | |
| 3396 * @param {Array} [entries] The key-value pairs to cache. | |
| 3397 */ | |
| 3398 function Hash(entries) { | |
| 3399 var index = -1, | |
| 3400 length = entries == null ? 0 : entries.length; | |
| 3401 | |
| 3402 this.clear(); | |
| 3403 while (++index < length) { | |
| 3404 var entry = entries[index]; | |
| 3405 this.set(entry[0], entry[1]); | |
| 3406 } | |
| 3407 } | |
| 3408 | |
| 3409 /** | |
| 3410 * Removes all key-value entries from the hash. | |
| 3411 * | |
| 3412 * @private | |
| 3413 * @name clear | |
| 3414 * @memberOf Hash | |
| 3415 */ | |
| 3416 function hashClear() { | |
| 3417 this.__data__ = nativeCreate ? nativeCreate(null) : {}; | |
| 3418 this.size = 0; | |
| 3419 } | |
| 3420 | |
| 3421 /** | |
| 3422 * Removes `key` and its value from the hash. | |
| 3423 * | |
| 3424 * @private | |
| 3425 * @name delete | |
| 3426 * @memberOf Hash | |
| 3427 * @param {Object} hash The hash to modify. | |
| 3428 * @param {string} key The key of the value to remove. | |
| 3429 * @returns {boolean} Returns `true` if the entry was removed, else `false`. | |
| 3430 */ | |
| 3431 function hashDelete(key) { | |
| 3432 var result = this.has(key) && delete this.__data__[key]; | |
| 3433 this.size -= result ? 1 : 0; | |
| 3434 return result; | |
| 3435 } | |
| 3436 | |
| 3437 /** | |
| 3438 * Gets the hash value for `key`. | |
| 3439 * | |
| 3440 * @private | |
| 3441 * @name get | |
| 3442 * @memberOf Hash | |
| 3443 * @param {string} key The key of the value to get. | |
| 3444 * @returns {*} Returns the entry value. | |
| 3445 */ | |
| 3446 function hashGet(key) { | |
| 3447 var data = this.__data__; | |
| 3448 if (nativeCreate) { | |
| 3449 var result = data[key]; | |
| 3450 return result === HASH_UNDEFINED ? undefined : result; | |
| 3451 } | |
| 3452 return hasOwnProperty.call(data, key) ? data[key] : undefined; | |
| 3453 } | |
| 3454 | |
| 3455 /** | |
| 3456 * Checks if a hash value for `key` exists. | |
| 3457 * | |
| 3458 * @private | |
| 3459 * @name has | |
| 3460 * @memberOf Hash | |
| 3461 * @param {string} key The key of the entry to check. | |
| 3462 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. | |
| 3463 */ | |
| 3464 function hashHas(key) { | |
| 3465 var data = this.__data__; | |
| 3466 return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key); | |
| 3467 } | |
| 3468 | |
| 3469 /** | |
| 3470 * Sets the hash `key` to `value`. | |
| 3471 * | |
| 3472 * @private | |
| 3473 * @name set | |
| 3474 * @memberOf Hash | |
| 3475 * @param {string} key The key of the value to set. | |
| 3476 * @param {*} value The value to set. | |
| 3477 * @returns {Object} Returns the hash instance. | |
| 3478 */ | |
| 3479 function hashSet(key, value) { | |
| 3480 var data = this.__data__; | |
| 3481 this.size += this.has(key) ? 0 : 1; | |
| 3482 data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value; | |
| 3483 return this; | |
| 3484 } | |
| 3485 | |
| 3486 // Add methods to `Hash`. | |
| 3487 Hash.prototype.clear = hashClear; | |
| 3488 Hash.prototype['delete'] = hashDelete; | |
| 3489 Hash.prototype.get = hashGet; | |
| 3490 Hash.prototype.has = hashHas; | |
| 3491 Hash.prototype.set = hashSet; | |
| 3492 | |
| 3493 /*------------------------------------------------------------------------*/ | |
| 3494 | |
| 3495 /** | |
| 3496 * Creates an list cache object. | |
| 3497 * | |
| 3498 * @private | |
| 3499 * @constructor | |
| 3500 * @param {Array} [entries] The key-value pairs to cache. | |
| 3501 */ | |
| 3502 function ListCache(entries) { | |
| 3503 var index = -1, | |
| 3504 length = entries == null ? 0 : entries.length; | |
| 3505 | |
| 3506 this.clear(); | |
| 3507 while (++index < length) { | |
| 3508 var entry = entries[index]; | |
| 3509 this.set(entry[0], entry[1]); | |
| 3510 } | |
| 3511 } | |
| 3512 | |
| 3513 /** | |
| 3514 * Removes all key-value entries from the list cache. | |
| 3515 * | |
| 3516 * @private | |
| 3517 * @name clear | |
| 3518 * @memberOf ListCache | |
| 3519 */ | |
| 3520 function listCacheClear() { | |
| 3521 this.__data__ = []; | |
| 3522 this.size = 0; | |
| 3523 } | |
| 3524 | |
| 3525 /** | |
| 3526 * Removes `key` and its value from the list cache. | |
| 3527 * | |
| 3528 * @private | |
| 3529 * @name delete | |
| 3530 * @memberOf ListCache | |
| 3531 * @param {string} key The key of the value to remove. | |
| 3532 * @returns {boolean} Returns `true` if the entry was removed, else `false`. | |
| 3533 */ | |
| 3534 function listCacheDelete(key) { | |
| 3535 var data = this.__data__, | |
| 3536 index = assocIndexOf(data, key); | |
| 3537 | |
| 3538 if (index < 0) { | |
| 3539 return false; | |
| 3540 } | |
| 3541 var lastIndex = data.length - 1; | |
| 3542 if (index == lastIndex) { | |
| 3543 data.pop(); | |
| 3544 } else { | |
| 3545 splice.call(data, index, 1); | |
| 3546 } | |
| 3547 --this.size; | |
| 3548 return true; | |
| 3549 } | |
| 3550 | |
| 3551 /** | |
| 3552 * Gets the list cache value for `key`. | |
| 3553 * | |
| 3554 * @private | |
| 3555 * @name get | |
| 3556 * @memberOf ListCache | |
| 3557 * @param {string} key The key of the value to get. | |
| 3558 * @returns {*} Returns the entry value. | |
| 3559 */ | |
| 3560 function listCacheGet(key) { | |
| 3561 var data = this.__data__, | |
| 3562 index = assocIndexOf(data, key); | |
| 3563 | |
| 3564 return index < 0 ? undefined : data[index][1]; | |
| 3565 } | |
| 3566 | |
| 3567 /** | |
| 3568 * Checks if a list cache value for `key` exists. | |
| 3569 * | |
| 3570 * @private | |
| 3571 * @name has | |
| 3572 * @memberOf ListCache | |
| 3573 * @param {string} key The key of the entry to check. | |
| 3574 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. | |
| 3575 */ | |
| 3576 function listCacheHas(key) { | |
| 3577 return assocIndexOf(this.__data__, key) > -1; | |
| 3578 } | |
| 3579 | |
| 3580 /** | |
| 3581 * Sets the list cache `key` to `value`. | |
| 3582 * | |
| 3583 * @private | |
| 3584 * @name set | |
| 3585 * @memberOf ListCache | |
| 3586 * @param {string} key The key of the value to set. | |
| 3587 * @param {*} value The value to set. | |
| 3588 * @returns {Object} Returns the list cache instance. | |
| 3589 */ | |
| 3590 function listCacheSet(key, value) { | |
| 3591 var data = this.__data__, | |
| 3592 index = assocIndexOf(data, key); | |
| 3593 | |
| 3594 if (index < 0) { | |
| 3595 ++this.size; | |
| 3596 data.push([key, value]); | |
| 3597 } else { | |
| 3598 data[index][1] = value; | |
| 3599 } | |
| 3600 return this; | |
| 3601 } | |
| 3602 | |
| 3603 // Add methods to `ListCache`. | |
| 3604 ListCache.prototype.clear = listCacheClear; | |
| 3605 ListCache.prototype['delete'] = listCacheDelete; | |
| 3606 ListCache.prototype.get = listCacheGet; | |
| 3607 ListCache.prototype.has = listCacheHas; | |
| 3608 ListCache.prototype.set = listCacheSet; | |
| 3609 | |
| 3610 /*------------------------------------------------------------------------*/ | |
| 3611 | |
| 3612 /** | |
| 3613 * Creates a map cache object to store key-value pairs. | |
| 3614 * | |
| 3615 * @private | |
| 3616 * @constructor | |
| 3617 * @param {Array} [entries] The key-value pairs to cache. | |
| 3618 */ | |
| 3619 function MapCache(entries) { | |
| 3620 var index = -1, | |
| 3621 length = entries == null ? 0 : entries.length; | |
| 3622 | |
| 3623 this.clear(); | |
| 3624 while (++index < length) { | |
| 3625 var entry = entries[index]; | |
| 3626 this.set(entry[0], entry[1]); | |
| 3627 } | |
| 3628 } | |
| 3629 | |
| 3630 /** | |
| 3631 * Removes all key-value entries from the map. | |
| 3632 * | |
| 3633 * @private | |
| 3634 * @name clear | |
| 3635 * @memberOf MapCache | |
| 3636 */ | |
| 3637 function mapCacheClear() { | |
| 3638 this.size = 0; | |
| 3639 this.__data__ = { | |
| 3640 'hash': new Hash, | |
| 3641 'map': new (Map || ListCache), | |
| 3642 'string': new Hash | |
| 3643 }; | |
| 3644 } | |
| 3645 | |
| 3646 /** | |
| 3647 * Removes `key` and its value from the map. | |
| 3648 * | |
| 3649 * @private | |
| 3650 * @name delete | |
| 3651 * @memberOf MapCache | |
| 3652 * @param {string} key The key of the value to remove. | |
| 3653 * @returns {boolean} Returns `true` if the entry was removed, else `false`. | |
| 3654 */ | |
| 3655 function mapCacheDelete(key) { | |
| 3656 var result = getMapData(this, key)['delete'](key); | |
| 3657 this.size -= result ? 1 : 0; | |
| 3658 return result; | |
| 3659 } | |
| 3660 | |
| 3661 /** | |
| 3662 * Gets the map value for `key`. | |
| 3663 * | |
| 3664 * @private | |
| 3665 * @name get | |
| 3666 * @memberOf MapCache | |
| 3667 * @param {string} key The key of the value to get. | |
| 3668 * @returns {*} Returns the entry value. | |
| 3669 */ | |
| 3670 function mapCacheGet(key) { | |
| 3671 return getMapData(this, key).get(key); | |
| 3672 } | |
| 3673 | |
| 3674 /** | |
| 3675 * Checks if a map value for `key` exists. | |
| 3676 * | |
| 3677 * @private | |
| 3678 * @name has | |
| 3679 * @memberOf MapCache | |
| 3680 * @param {string} key The key of the entry to check. | |
| 3681 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. | |
| 3682 */ | |
| 3683 function mapCacheHas(key) { | |
| 3684 return getMapData(this, key).has(key); | |
| 3685 } | |
| 3686 | |
| 3687 /** | |
| 3688 * Sets the map `key` to `value`. | |
| 3689 * | |
| 3690 * @private | |
| 3691 * @name set | |
| 3692 * @memberOf MapCache | |
| 3693 * @param {string} key The key of the value to set. | |
| 3694 * @param {*} value The value to set. | |
| 3695 * @returns {Object} Returns the map cache instance. | |
| 3696 */ | |
| 3697 function mapCacheSet(key, value) { | |
| 3698 var data = getMapData(this, key), | |
| 3699 size = data.size; | |
| 3700 | |
| 3701 data.set(key, value); | |
| 3702 this.size += data.size == size ? 0 : 1; | |
| 3703 return this; | |
| 3704 } | |
| 3705 | |
| 3706 // Add methods to `MapCache`. | |
| 3707 MapCache.prototype.clear = mapCacheClear; | |
| 3708 MapCache.prototype['delete'] = mapCacheDelete; | |
| 3709 MapCache.prototype.get = mapCacheGet; | |
| 3710 MapCache.prototype.has = mapCacheHas; | |
| 3711 MapCache.prototype.set = mapCacheSet; | |
| 3712 | |
| 3713 /*------------------------------------------------------------------------*/ | |
| 3714 | |
| 3715 /** | |
| 3716 * | |
| 3717 * Creates an array cache object to store unique values. | |
| 3718 * | |
| 3719 * @private | |
| 3720 * @constructor | |
| 3721 * @param {Array} [values] The values to cache. | |
| 3722 */ | |
| 3723 function SetCache(values) { | |
| 3724 var index = -1, | |
| 3725 length = values == null ? 0 : values.length; | |
| 3726 | |
| 3727 this.__data__ = new MapCache; | |
| 3728 while (++index < length) { | |
| 3729 this.add(values[index]); | |
| 3730 } | |
| 3731 } | |
| 3732 | |
| 3733 /** | |
| 3734 * Adds `value` to the array cache. | |
| 3735 * | |
| 3736 * @private | |
| 3737 * @name add | |
| 3738 * @memberOf SetCache | |
| 3739 * @alias push | |
| 3740 * @param {*} value The value to cache. | |
| 3741 * @returns {Object} Returns the cache instance. | |
| 3742 */ | |
| 3743 function setCacheAdd(value) { | |
| 3744 this.__data__.set(value, HASH_UNDEFINED); | |
| 3745 return this; | |
| 3746 } | |
| 3747 | |
| 3748 /** | |
| 3749 * Checks if `value` is in the array cache. | |
| 3750 * | |
| 3751 * @private | |
| 3752 * @name has | |
| 3753 * @memberOf SetCache | |
| 3754 * @param {*} value The value to search for. | |
| 3755 * @returns {number} Returns `true` if `value` is found, else `false`. | |
| 3756 */ | |
| 3757 function setCacheHas(value) { | |
| 3758 return this.__data__.has(value); | |
| 3759 } | |
| 3760 | |
| 3761 // Add methods to `SetCache`. | |
| 3762 SetCache.prototype.add = SetCache.prototype.push = setCacheAdd; | |
| 3763 SetCache.prototype.has = setCacheHas; | |
| 3764 | |
| 3765 /*------------------------------------------------------------------------*/ | |
| 3766 | |
| 3767 /** | |
| 3768 * Creates a stack cache object to store key-value pairs. | |
| 3769 * | |
| 3770 * @private | |
| 3771 * @constructor | |
| 3772 * @param {Array} [entries] The key-value pairs to cache. | |
| 3773 */ | |
| 3774 function Stack(entries) { | |
| 3775 var data = this.__data__ = new ListCache(entries); | |
| 3776 this.size = data.size; | |
| 3777 } | |
| 3778 | |
| 3779 /** | |
| 3780 * Removes all key-value entries from the stack. | |
| 3781 * | |
| 3782 * @private | |
| 3783 * @name clear | |
| 3784 * @memberOf Stack | |
| 3785 */ | |
| 3786 function stackClear() { | |
| 3787 this.__data__ = new ListCache; | |
| 3788 this.size = 0; | |
| 3789 } | |
| 3790 | |
| 3791 /** | |
| 3792 * Removes `key` and its value from the stack. | |
| 3793 * | |
| 3794 * @private | |
| 3795 * @name delete | |
| 3796 * @memberOf Stack | |
| 3797 * @param {string} key The key of the value to remove. | |
| 3798 * @returns {boolean} Returns `true` if the entry was removed, else `false`. | |
| 3799 */ | |
| 3800 function stackDelete(key) { | |
| 3801 var data = this.__data__, | |
| 3802 result = data['delete'](key); | |
| 3803 | |
| 3804 this.size = data.size; | |
| 3805 return result; | |
| 3806 } | |
| 3807 | |
| 3808 /** | |
| 3809 * Gets the stack value for `key`. | |
| 3810 * | |
| 3811 * @private | |
| 3812 * @name get | |
| 3813 * @memberOf Stack | |
| 3814 * @param {string} key The key of the value to get. | |
| 3815 * @returns {*} Returns the entry value. | |
| 3816 */ | |
| 3817 function stackGet(key) { | |
| 3818 return this.__data__.get(key); | |
| 3819 } | |
| 3820 | |
| 3821 /** | |
| 3822 * Checks if a stack value for `key` exists. | |
| 3823 * | |
| 3824 * @private | |
| 3825 * @name has | |
| 3826 * @memberOf Stack | |
| 3827 * @param {string} key The key of the entry to check. | |
| 3828 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. | |
| 3829 */ | |
| 3830 function stackHas(key) { | |
| 3831 return this.__data__.has(key); | |
| 3832 } | |
| 3833 | |
| 3834 /** | |
| 3835 * Sets the stack `key` to `value`. | |
| 3836 * | |
| 3837 * @private | |
| 3838 * @name set | |
| 3839 * @memberOf Stack | |
| 3840 * @param {string} key The key of the value to set. | |
| 3841 * @param {*} value The value to set. | |
| 3842 * @returns {Object} Returns the stack cache instance. | |
| 3843 */ | |
| 3844 function stackSet(key, value) { | |
| 3845 var data = this.__data__; | |
| 3846 if (data instanceof ListCache) { | |
| 3847 var pairs = data.__data__; | |
| 3848 if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) { | |
| 3849 pairs.push([key, value]); | |
| 3850 this.size = ++data.size; | |
| 3851 return this; | |
| 3852 } | |
| 3853 data = this.__data__ = new MapCache(pairs); | |
| 3854 } | |
| 3855 data.set(key, value); | |
| 3856 this.size = data.size; | |
| 3857 return this; | |
| 3858 } | |
| 3859 | |
| 3860 // Add methods to `Stack`. | |
| 3861 Stack.prototype.clear = stackClear; | |
| 3862 Stack.prototype['delete'] = stackDelete; | |
| 3863 Stack.prototype.get = stackGet; | |
| 3864 Stack.prototype.has = stackHas; | |
| 3865 Stack.prototype.set = stackSet; | |
| 3866 | |
| 3867 /*------------------------------------------------------------------------*/ | |
| 3868 | |
| 3869 /** | |
| 3870 * Creates an array of the enumerable property names of the array-like `value`. | |
| 3871 * | |
| 3872 * @private | |
| 3873 * @param {*} value The value to query. | |
| 3874 * @param {boolean} inherited Specify returning inherited property names. | |
| 3875 * @returns {Array} Returns the array of property names. | |
| 3876 */ | |
| 3877 function arrayLikeKeys(value, inherited) { | |
| 3878 var isArr = isArray(value), | |
| 3879 isArg = !isArr && isArguments(value), | |
| 3880 isBuff = !isArr && !isArg && isBuffer(value), | |
| 3881 isType = !isArr && !isArg && !isBuff && isTypedArray(value), | |
| 3882 skipIndexes = isArr || isArg || isBuff || isType, | |
| 3883 result = skipIndexes ? baseTimes(value.length, String) : [], | |
| 3884 length = result.length; | |
| 3885 | |
| 3886 for (var key in value) { | |
| 3887 if ((inherited || hasOwnProperty.call(value, key)) && | |
| 3888 !(skipIndexes && ( | |
| 3889 // Safari 9 has enumerable `arguments.length` in strict mode. | |
| 3890 key == 'length' || | |
| 3891 // Node.js 0.10 has enumerable non-index properties on buffers. | |
| 3892 (isBuff && (key == 'offset' || key == 'parent')) || | |
| 3893 // PhantomJS 2 has enumerable non-index properties on typed arrays. | |
| 3894 (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) || | |
| 3895 // Skip index properties. | |
| 3896 isIndex(key, length) | |
| 3897 ))) { | |
| 3898 result.push(key); | |
| 3899 } | |
| 3900 } | |
| 3901 return result; | |
| 3902 } | |
| 3903 | |
| 3904 /** | |
| 3905 * A specialized version of `_.sample` for arrays. | |
| 3906 * | |
| 3907 * @private | |
| 3908 * @param {Array} array The array to sample. | |
| 3909 * @returns {*} Returns the random element. | |
| 3910 */ | |
| 3911 function arraySample(array) { | |
| 3912 var length = array.length; | |
| 3913 return length ? array[baseRandom(0, length - 1)] : undefined; | |
| 3914 } | |
| 3915 | |
| 3916 /** | |
| 3917 * A specialized version of `_.sampleSize` for arrays. | |
| 3918 * | |
| 3919 * @private | |
| 3920 * @param {Array} array The array to sample. | |
| 3921 * @param {number} n The number of elements to sample. | |
| 3922 * @returns {Array} Returns the random elements. | |
| 3923 */ | |
| 3924 function arraySampleSize(array, n) { | |
| 3925 return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length)); | |
| 3926 } | |
| 3927 | |
| 3928 /** | |
| 3929 * A specialized version of `_.shuffle` for arrays. | |
| 3930 * | |
| 3931 * @private | |
| 3932 * @param {Array} array The array to shuffle. | |
| 3933 * @returns {Array} Returns the new shuffled array. | |
| 3934 */ | |
| 3935 function arrayShuffle(array) { | |
| 3936 return shuffleSelf(copyArray(array)); | |
| 3937 } | |
| 3938 | |
| 3939 /** | |
| 3940 * This function is like `assignValue` except that it doesn't assign | |
| 3941 * `undefined` values. | |
| 3942 * | |
| 3943 * @private | |
| 3944 * @param {Object} object The object to modify. | |
| 3945 * @param {string} key The key of the property to assign. | |
| 3946 * @param {*} value The value to assign. | |
| 3947 */ | |
| 3948 function assignMergeValue(object, key, value) { | |
| 3949 if ((value !== undefined && !eq(object[key], value)) || | |
| 3950 (value === undefined && !(key in object))) { | |
| 3951 baseAssignValue(object, key, value); | |
| 3952 } | |
| 3953 } | |
| 3954 | |
| 3955 /** | |
| 3956 * Assigns `value` to `key` of `object` if the existing value is not equivalent | |
| 3957 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 3958 * for equality comparisons. | |
| 3959 * | |
| 3960 * @private | |
| 3961 * @param {Object} object The object to modify. | |
| 3962 * @param {string} key The key of the property to assign. | |
| 3963 * @param {*} value The value to assign. | |
| 3964 */ | |
| 3965 function assignValue(object, key, value) { | |
| 3966 var objValue = object[key]; | |
| 3967 if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || | |
| 3968 (value === undefined && !(key in object))) { | |
| 3969 baseAssignValue(object, key, value); | |
| 3970 } | |
| 3971 } | |
| 3972 | |
| 3973 /** | |
| 3974 * Gets the index at which the `key` is found in `array` of key-value pairs. | |
| 3975 * | |
| 3976 * @private | |
| 3977 * @param {Array} array The array to inspect. | |
| 3978 * @param {*} key The key to search for. | |
| 3979 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 3980 */ | |
| 3981 function assocIndexOf(array, key) { | |
| 3982 var length = array.length; | |
| 3983 while (length--) { | |
| 3984 if (eq(array[length][0], key)) { | |
| 3985 return length; | |
| 3986 } | |
| 3987 } | |
| 3988 return -1; | |
| 3989 } | |
| 3990 | |
| 3991 /** | |
| 3992 * Aggregates elements of `collection` on `accumulator` with keys transformed | |
| 3993 * by `iteratee` and values set by `setter`. | |
| 3994 * | |
| 3995 * @private | |
| 3996 * @param {Array|Object} collection The collection to iterate over. | |
| 3997 * @param {Function} setter The function to set `accumulator` values. | |
| 3998 * @param {Function} iteratee The iteratee to transform keys. | |
| 3999 * @param {Object} accumulator The initial aggregated object. | |
| 4000 * @returns {Function} Returns `accumulator`. | |
| 4001 */ | |
| 4002 function baseAggregator(collection, setter, iteratee, accumulator) { | |
| 4003 baseEach(collection, function(value, key, collection) { | |
| 4004 setter(accumulator, value, iteratee(value), collection); | |
| 4005 }); | |
| 4006 return accumulator; | |
| 4007 } | |
| 4008 | |
| 4009 /** | |
| 4010 * The base implementation of `_.assign` without support for multiple sources | |
| 4011 * or `customizer` functions. | |
| 4012 * | |
| 4013 * @private | |
| 4014 * @param {Object} object The destination object. | |
| 4015 * @param {Object} source The source object. | |
| 4016 * @returns {Object} Returns `object`. | |
| 4017 */ | |
| 4018 function baseAssign(object, source) { | |
| 4019 return object && copyObject(source, keys(source), object); | |
| 4020 } | |
| 4021 | |
| 4022 /** | |
| 4023 * The base implementation of `_.assignIn` without support for multiple sources | |
| 4024 * or `customizer` functions. | |
| 4025 * | |
| 4026 * @private | |
| 4027 * @param {Object} object The destination object. | |
| 4028 * @param {Object} source The source object. | |
| 4029 * @returns {Object} Returns `object`. | |
| 4030 */ | |
| 4031 function baseAssignIn(object, source) { | |
| 4032 return object && copyObject(source, keysIn(source), object); | |
| 4033 } | |
| 4034 | |
| 4035 /** | |
| 4036 * The base implementation of `assignValue` and `assignMergeValue` without | |
| 4037 * value checks. | |
| 4038 * | |
| 4039 * @private | |
| 4040 * @param {Object} object The object to modify. | |
| 4041 * @param {string} key The key of the property to assign. | |
| 4042 * @param {*} value The value to assign. | |
| 4043 */ | |
| 4044 function baseAssignValue(object, key, value) { | |
| 4045 if (key == '__proto__' && defineProperty) { | |
| 4046 defineProperty(object, key, { | |
| 4047 'configurable': true, | |
| 4048 'enumerable': true, | |
| 4049 'value': value, | |
| 4050 'writable': true | |
| 4051 }); | |
| 4052 } else { | |
| 4053 object[key] = value; | |
| 4054 } | |
| 4055 } | |
| 4056 | |
| 4057 /** | |
| 4058 * The base implementation of `_.at` without support for individual paths. | |
| 4059 * | |
| 4060 * @private | |
| 4061 * @param {Object} object The object to iterate over. | |
| 4062 * @param {string[]} paths The property paths to pick. | |
| 4063 * @returns {Array} Returns the picked elements. | |
| 4064 */ | |
| 4065 function baseAt(object, paths) { | |
| 4066 var index = -1, | |
| 4067 length = paths.length, | |
| 4068 result = Array(length), | |
| 4069 skip = object == null; | |
| 4070 | |
| 4071 while (++index < length) { | |
| 4072 result[index] = skip ? undefined : get(object, paths[index]); | |
| 4073 } | |
| 4074 return result; | |
| 4075 } | |
| 4076 | |
| 4077 /** | |
| 4078 * The base implementation of `_.clamp` which doesn't coerce arguments. | |
| 4079 * | |
| 4080 * @private | |
| 4081 * @param {number} number The number to clamp. | |
| 4082 * @param {number} [lower] The lower bound. | |
| 4083 * @param {number} upper The upper bound. | |
| 4084 * @returns {number} Returns the clamped number. | |
| 4085 */ | |
| 4086 function baseClamp(number, lower, upper) { | |
| 4087 if (number === number) { | |
| 4088 if (upper !== undefined) { | |
| 4089 number = number <= upper ? number : upper; | |
| 4090 } | |
| 4091 if (lower !== undefined) { | |
| 4092 number = number >= lower ? number : lower; | |
| 4093 } | |
| 4094 } | |
| 4095 return number; | |
| 4096 } | |
| 4097 | |
| 4098 /** | |
| 4099 * The base implementation of `_.clone` and `_.cloneDeep` which tracks | |
| 4100 * traversed objects. | |
| 4101 * | |
| 4102 * @private | |
| 4103 * @param {*} value The value to clone. | |
| 4104 * @param {boolean} bitmask The bitmask flags. | |
| 4105 * 1 - Deep clone | |
| 4106 * 2 - Flatten inherited properties | |
| 4107 * 4 - Clone symbols | |
| 4108 * @param {Function} [customizer] The function to customize cloning. | |
| 4109 * @param {string} [key] The key of `value`. | |
| 4110 * @param {Object} [object] The parent object of `value`. | |
| 4111 * @param {Object} [stack] Tracks traversed objects and their clone counterparts. | |
| 4112 * @returns {*} Returns the cloned value. | |
| 4113 */ | |
| 4114 function baseClone(value, bitmask, customizer, key, object, stack) { | |
| 4115 var result, | |
| 4116 isDeep = bitmask & CLONE_DEEP_FLAG, | |
| 4117 isFlat = bitmask & CLONE_FLAT_FLAG, | |
| 4118 isFull = bitmask & CLONE_SYMBOLS_FLAG; | |
| 4119 | |
| 4120 if (customizer) { | |
| 4121 result = object ? customizer(value, key, object, stack) : customizer(value); | |
| 4122 } | |
| 4123 if (result !== undefined) { | |
| 4124 return result; | |
| 4125 } | |
| 4126 if (!isObject(value)) { | |
| 4127 return value; | |
| 4128 } | |
| 4129 var isArr = isArray(value); | |
| 4130 if (isArr) { | |
| 4131 result = initCloneArray(value); | |
| 4132 if (!isDeep) { | |
| 4133 return copyArray(value, result); | |
| 4134 } | |
| 4135 } else { | |
| 4136 var tag = getTag(value), | |
| 4137 isFunc = tag == funcTag || tag == genTag; | |
| 4138 | |
| 4139 if (isBuffer(value)) { | |
| 4140 return cloneBuffer(value, isDeep); | |
| 4141 } | |
| 4142 if (tag == objectTag || tag == argsTag || (isFunc && !object)) { | |
| 4143 result = (isFlat || isFunc) ? {} : initCloneObject(value); | |
| 4144 if (!isDeep) { | |
| 4145 return isFlat | |
| 4146 ? copySymbolsIn(value, baseAssignIn(result, value)) | |
| 4147 : copySymbols(value, baseAssign(result, value)); | |
| 4148 } | |
| 4149 } else { | |
| 4150 if (!cloneableTags[tag]) { | |
| 4151 return object ? value : {}; | |
| 4152 } | |
| 4153 result = initCloneByTag(value, tag, isDeep); | |
| 4154 } | |
| 4155 } | |
| 4156 // Check for circular references and return its corresponding clone. | |
| 4157 stack || (stack = new Stack); | |
| 4158 var stacked = stack.get(value); | |
| 4159 if (stacked) { | |
| 4160 return stacked; | |
| 4161 } | |
| 4162 stack.set(value, result); | |
| 4163 | |
| 4164 if (isSet(value)) { | |
| 4165 value.forEach(function(subValue) { | |
| 4166 result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack)); | |
| 4167 }); | |
| 4168 } else if (isMap(value)) { | |
| 4169 value.forEach(function(subValue, key) { | |
| 4170 result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack)); | |
| 4171 }); | |
| 4172 } | |
| 4173 | |
| 4174 var keysFunc = isFull | |
| 4175 ? (isFlat ? getAllKeysIn : getAllKeys) | |
| 4176 : (isFlat ? keysIn : keys); | |
| 4177 | |
| 4178 var props = isArr ? undefined : keysFunc(value); | |
| 4179 arrayEach(props || value, function(subValue, key) { | |
| 4180 if (props) { | |
| 4181 key = subValue; | |
| 4182 subValue = value[key]; | |
| 4183 } | |
| 4184 // Recursively populate clone (susceptible to call stack limits). | |
| 4185 assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack)); | |
| 4186 }); | |
| 4187 return result; | |
| 4188 } | |
| 4189 | |
| 4190 /** | |
| 4191 * The base implementation of `_.conforms` which doesn't clone `source`. | |
| 4192 * | |
| 4193 * @private | |
| 4194 * @param {Object} source The object of property predicates to conform to. | |
| 4195 * @returns {Function} Returns the new spec function. | |
| 4196 */ | |
| 4197 function baseConforms(source) { | |
| 4198 var props = keys(source); | |
| 4199 return function(object) { | |
| 4200 return baseConformsTo(object, source, props); | |
| 4201 }; | |
| 4202 } | |
| 4203 | |
| 4204 /** | |
| 4205 * The base implementation of `_.conformsTo` which accepts `props` to check. | |
| 4206 * | |
| 4207 * @private | |
| 4208 * @param {Object} object The object to inspect. | |
| 4209 * @param {Object} source The object of property predicates to conform to. | |
| 4210 * @returns {boolean} Returns `true` if `object` conforms, else `false`. | |
| 4211 */ | |
| 4212 function baseConformsTo(object, source, props) { | |
| 4213 var length = props.length; | |
| 4214 if (object == null) { | |
| 4215 return !length; | |
| 4216 } | |
| 4217 object = Object(object); | |
| 4218 while (length--) { | |
| 4219 var key = props[length], | |
| 4220 predicate = source[key], | |
| 4221 value = object[key]; | |
| 4222 | |
| 4223 if ((value === undefined && !(key in object)) || !predicate(value)) { | |
| 4224 return false; | |
| 4225 } | |
| 4226 } | |
| 4227 return true; | |
| 4228 } | |
| 4229 | |
| 4230 /** | |
| 4231 * The base implementation of `_.delay` and `_.defer` which accepts `args` | |
| 4232 * to provide to `func`. | |
| 4233 * | |
| 4234 * @private | |
| 4235 * @param {Function} func The function to delay. | |
| 4236 * @param {number} wait The number of milliseconds to delay invocation. | |
| 4237 * @param {Array} args The arguments to provide to `func`. | |
| 4238 * @returns {number|Object} Returns the timer id or timeout object. | |
| 4239 */ | |
| 4240 function baseDelay(func, wait, args) { | |
| 4241 if (typeof func != 'function') { | |
| 4242 throw new TypeError(FUNC_ERROR_TEXT); | |
| 4243 } | |
| 4244 return setTimeout(function() { func.apply(undefined, args); }, wait); | |
| 4245 } | |
| 4246 | |
| 4247 /** | |
| 4248 * The base implementation of methods like `_.difference` without support | |
| 4249 * for excluding multiple arrays or iteratee shorthands. | |
| 4250 * | |
| 4251 * @private | |
| 4252 * @param {Array} array The array to inspect. | |
| 4253 * @param {Array} values The values to exclude. | |
| 4254 * @param {Function} [iteratee] The iteratee invoked per element. | |
| 4255 * @param {Function} [comparator] The comparator invoked per element. | |
| 4256 * @returns {Array} Returns the new array of filtered values. | |
| 4257 */ | |
| 4258 function baseDifference(array, values, iteratee, comparator) { | |
| 4259 var index = -1, | |
| 4260 includes = arrayIncludes, | |
| 4261 isCommon = true, | |
| 4262 length = array.length, | |
| 4263 result = [], | |
| 4264 valuesLength = values.length; | |
| 4265 | |
| 4266 if (!length) { | |
| 4267 return result; | |
| 4268 } | |
| 4269 if (iteratee) { | |
| 4270 values = arrayMap(values, baseUnary(iteratee)); | |
| 4271 } | |
| 4272 if (comparator) { | |
| 4273 includes = arrayIncludesWith; | |
| 4274 isCommon = false; | |
| 4275 } | |
| 4276 else if (values.length >= LARGE_ARRAY_SIZE) { | |
| 4277 includes = cacheHas; | |
| 4278 isCommon = false; | |
| 4279 values = new SetCache(values); | |
| 4280 } | |
| 4281 outer: | |
| 4282 while (++index < length) { | |
| 4283 var value = array[index], | |
| 4284 computed = iteratee == null ? value : iteratee(value); | |
| 4285 | |
| 4286 value = (comparator || value !== 0) ? value : 0; | |
| 4287 if (isCommon && computed === computed) { | |
| 4288 var valuesIndex = valuesLength; | |
| 4289 while (valuesIndex--) { | |
| 4290 if (values[valuesIndex] === computed) { | |
| 4291 continue outer; | |
| 4292 } | |
| 4293 } | |
| 4294 result.push(value); | |
| 4295 } | |
| 4296 else if (!includes(values, computed, comparator)) { | |
| 4297 result.push(value); | |
| 4298 } | |
| 4299 } | |
| 4300 return result; | |
| 4301 } | |
| 4302 | |
| 4303 /** | |
| 4304 * The base implementation of `_.forEach` without support for iteratee shorthands. | |
| 4305 * | |
| 4306 * @private | |
| 4307 * @param {Array|Object} collection The collection to iterate over. | |
| 4308 * @param {Function} iteratee The function invoked per iteration. | |
| 4309 * @returns {Array|Object} Returns `collection`. | |
| 4310 */ | |
| 4311 var baseEach = createBaseEach(baseForOwn); | |
| 4312 | |
| 4313 /** | |
| 4314 * The base implementation of `_.forEachRight` without support for iteratee shorthands. | |
| 4315 * | |
| 4316 * @private | |
| 4317 * @param {Array|Object} collection The collection to iterate over. | |
| 4318 * @param {Function} iteratee The function invoked per iteration. | |
| 4319 * @returns {Array|Object} Returns `collection`. | |
| 4320 */ | |
| 4321 var baseEachRight = createBaseEach(baseForOwnRight, true); | |
| 4322 | |
| 4323 /** | |
| 4324 * The base implementation of `_.every` without support for iteratee shorthands. | |
| 4325 * | |
| 4326 * @private | |
| 4327 * @param {Array|Object} collection The collection to iterate over. | |
| 4328 * @param {Function} predicate The function invoked per iteration. | |
| 4329 * @returns {boolean} Returns `true` if all elements pass the predicate check, | |
| 4330 * else `false` | |
| 4331 */ | |
| 4332 function baseEvery(collection, predicate) { | |
| 4333 var result = true; | |
| 4334 baseEach(collection, function(value, index, collection) { | |
| 4335 result = !!predicate(value, index, collection); | |
| 4336 return result; | |
| 4337 }); | |
| 4338 return result; | |
| 4339 } | |
| 4340 | |
| 4341 /** | |
| 4342 * The base implementation of methods like `_.max` and `_.min` which accepts a | |
| 4343 * `comparator` to determine the extremum value. | |
| 4344 * | |
| 4345 * @private | |
| 4346 * @param {Array} array The array to iterate over. | |
| 4347 * @param {Function} iteratee The iteratee invoked per iteration. | |
| 4348 * @param {Function} comparator The comparator used to compare values. | |
| 4349 * @returns {*} Returns the extremum value. | |
| 4350 */ | |
| 4351 function baseExtremum(array, iteratee, comparator) { | |
| 4352 var index = -1, | |
| 4353 length = array.length; | |
| 4354 | |
| 4355 while (++index < length) { | |
| 4356 var value = array[index], | |
| 4357 current = iteratee(value); | |
| 4358 | |
| 4359 if (current != null && (computed === undefined | |
| 4360 ? (current === current && !isSymbol(current)) | |
| 4361 : comparator(current, computed) | |
| 4362 )) { | |
| 4363 var computed = current, | |
| 4364 result = value; | |
| 4365 } | |
| 4366 } | |
| 4367 return result; | |
| 4368 } | |
| 4369 | |
| 4370 /** | |
| 4371 * The base implementation of `_.fill` without an iteratee call guard. | |
| 4372 * | |
| 4373 * @private | |
| 4374 * @param {Array} array The array to fill. | |
| 4375 * @param {*} value The value to fill `array` with. | |
| 4376 * @param {number} [start=0] The start position. | |
| 4377 * @param {number} [end=array.length] The end position. | |
| 4378 * @returns {Array} Returns `array`. | |
| 4379 */ | |
| 4380 function baseFill(array, value, start, end) { | |
| 4381 var length = array.length; | |
| 4382 | |
| 4383 start = toInteger(start); | |
| 4384 if (start < 0) { | |
| 4385 start = -start > length ? 0 : (length + start); | |
| 4386 } | |
| 4387 end = (end === undefined || end > length) ? length : toInteger(end); | |
| 4388 if (end < 0) { | |
| 4389 end += length; | |
| 4390 } | |
| 4391 end = start > end ? 0 : toLength(end); | |
| 4392 while (start < end) { | |
| 4393 array[start++] = value; | |
| 4394 } | |
| 4395 return array; | |
| 4396 } | |
| 4397 | |
| 4398 /** | |
| 4399 * The base implementation of `_.filter` without support for iteratee shorthands. | |
| 4400 * | |
| 4401 * @private | |
| 4402 * @param {Array|Object} collection The collection to iterate over. | |
| 4403 * @param {Function} predicate The function invoked per iteration. | |
| 4404 * @returns {Array} Returns the new filtered array. | |
| 4405 */ | |
| 4406 function baseFilter(collection, predicate) { | |
| 4407 var result = []; | |
| 4408 baseEach(collection, function(value, index, collection) { | |
| 4409 if (predicate(value, index, collection)) { | |
| 4410 result.push(value); | |
| 4411 } | |
| 4412 }); | |
| 4413 return result; | |
| 4414 } | |
| 4415 | |
| 4416 /** | |
| 4417 * The base implementation of `_.flatten` with support for restricting flattening. | |
| 4418 * | |
| 4419 * @private | |
| 4420 * @param {Array} array The array to flatten. | |
| 4421 * @param {number} depth The maximum recursion depth. | |
| 4422 * @param {boolean} [predicate=isFlattenable] The function invoked per iteration. | |
| 4423 * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks. | |
| 4424 * @param {Array} [result=[]] The initial result value. | |
| 4425 * @returns {Array} Returns the new flattened array. | |
| 4426 */ | |
| 4427 function baseFlatten(array, depth, predicate, isStrict, result) { | |
| 4428 var index = -1, | |
| 4429 length = array.length; | |
| 4430 | |
| 4431 predicate || (predicate = isFlattenable); | |
| 4432 result || (result = []); | |
| 4433 | |
| 4434 while (++index < length) { | |
| 4435 var value = array[index]; | |
| 4436 if (depth > 0 && predicate(value)) { | |
| 4437 if (depth > 1) { | |
| 4438 // Recursively flatten arrays (susceptible to call stack limits). | |
| 4439 baseFlatten(value, depth - 1, predicate, isStrict, result); | |
| 4440 } else { | |
| 4441 arrayPush(result, value); | |
| 4442 } | |
| 4443 } else if (!isStrict) { | |
| 4444 result[result.length] = value; | |
| 4445 } | |
| 4446 } | |
| 4447 return result; | |
| 4448 } | |
| 4449 | |
| 4450 /** | |
| 4451 * The base implementation of `baseForOwn` which iterates over `object` | |
| 4452 * properties returned by `keysFunc` and invokes `iteratee` for each property. | |
| 4453 * Iteratee functions may exit iteration early by explicitly returning `false`. | |
| 4454 * | |
| 4455 * @private | |
| 4456 * @param {Object} object The object to iterate over. | |
| 4457 * @param {Function} iteratee The function invoked per iteration. | |
| 4458 * @param {Function} keysFunc The function to get the keys of `object`. | |
| 4459 * @returns {Object} Returns `object`. | |
| 4460 */ | |
| 4461 var baseFor = createBaseFor(); | |
| 4462 | |
| 4463 /** | |
| 4464 * This function is like `baseFor` except that it iterates over properties | |
| 4465 * in the opposite order. | |
| 4466 * | |
| 4467 * @private | |
| 4468 * @param {Object} object The object to iterate over. | |
| 4469 * @param {Function} iteratee The function invoked per iteration. | |
| 4470 * @param {Function} keysFunc The function to get the keys of `object`. | |
| 4471 * @returns {Object} Returns `object`. | |
| 4472 */ | |
| 4473 var baseForRight = createBaseFor(true); | |
| 4474 | |
| 4475 /** | |
| 4476 * The base implementation of `_.forOwn` without support for iteratee shorthands. | |
| 4477 * | |
| 4478 * @private | |
| 4479 * @param {Object} object The object to iterate over. | |
| 4480 * @param {Function} iteratee The function invoked per iteration. | |
| 4481 * @returns {Object} Returns `object`. | |
| 4482 */ | |
| 4483 function baseForOwn(object, iteratee) { | |
| 4484 return object && baseFor(object, iteratee, keys); | |
| 4485 } | |
| 4486 | |
| 4487 /** | |
| 4488 * The base implementation of `_.forOwnRight` without support for iteratee shorthands. | |
| 4489 * | |
| 4490 * @private | |
| 4491 * @param {Object} object The object to iterate over. | |
| 4492 * @param {Function} iteratee The function invoked per iteration. | |
| 4493 * @returns {Object} Returns `object`. | |
| 4494 */ | |
| 4495 function baseForOwnRight(object, iteratee) { | |
| 4496 return object && baseForRight(object, iteratee, keys); | |
| 4497 } | |
| 4498 | |
| 4499 /** | |
| 4500 * The base implementation of `_.functions` which creates an array of | |
| 4501 * `object` function property names filtered from `props`. | |
| 4502 * | |
| 4503 * @private | |
| 4504 * @param {Object} object The object to inspect. | |
| 4505 * @param {Array} props The property names to filter. | |
| 4506 * @returns {Array} Returns the function names. | |
| 4507 */ | |
| 4508 function baseFunctions(object, props) { | |
| 4509 return arrayFilter(props, function(key) { | |
| 4510 return isFunction(object[key]); | |
| 4511 }); | |
| 4512 } | |
| 4513 | |
| 4514 /** | |
| 4515 * The base implementation of `_.get` without support for default values. | |
| 4516 * | |
| 4517 * @private | |
| 4518 * @param {Object} object The object to query. | |
| 4519 * @param {Array|string} path The path of the property to get. | |
| 4520 * @returns {*} Returns the resolved value. | |
| 4521 */ | |
| 4522 function baseGet(object, path) { | |
| 4523 path = castPath(path, object); | |
| 4524 | |
| 4525 var index = 0, | |
| 4526 length = path.length; | |
| 4527 | |
| 4528 while (object != null && index < length) { | |
| 4529 object = object[toKey(path[index++])]; | |
| 4530 } | |
| 4531 return (index && index == length) ? object : undefined; | |
| 4532 } | |
| 4533 | |
| 4534 /** | |
| 4535 * The base implementation of `getAllKeys` and `getAllKeysIn` which uses | |
| 4536 * `keysFunc` and `symbolsFunc` to get the enumerable property names and | |
| 4537 * symbols of `object`. | |
| 4538 * | |
| 4539 * @private | |
| 4540 * @param {Object} object The object to query. | |
| 4541 * @param {Function} keysFunc The function to get the keys of `object`. | |
| 4542 * @param {Function} symbolsFunc The function to get the symbols of `object`. | |
| 4543 * @returns {Array} Returns the array of property names and symbols. | |
| 4544 */ | |
| 4545 function baseGetAllKeys(object, keysFunc, symbolsFunc) { | |
| 4546 var result = keysFunc(object); | |
| 4547 return isArray(object) ? result : arrayPush(result, symbolsFunc(object)); | |
| 4548 } | |
| 4549 | |
| 4550 /** | |
| 4551 * The base implementation of `getTag` without fallbacks for buggy environments. | |
| 4552 * | |
| 4553 * @private | |
| 4554 * @param {*} value The value to query. | |
| 4555 * @returns {string} Returns the `toStringTag`. | |
| 4556 */ | |
| 4557 function baseGetTag(value) { | |
| 4558 if (value == null) { | |
| 4559 return value === undefined ? undefinedTag : nullTag; | |
| 4560 } | |
| 4561 return (symToStringTag && symToStringTag in Object(value)) | |
| 4562 ? getRawTag(value) | |
| 4563 : objectToString(value); | |
| 4564 } | |
| 4565 | |
| 4566 /** | |
| 4567 * The base implementation of `_.gt` which doesn't coerce arguments. | |
| 4568 * | |
| 4569 * @private | |
| 4570 * @param {*} value The value to compare. | |
| 4571 * @param {*} other The other value to compare. | |
| 4572 * @returns {boolean} Returns `true` if `value` is greater than `other`, | |
| 4573 * else `false`. | |
| 4574 */ | |
| 4575 function baseGt(value, other) { | |
| 4576 return value > other; | |
| 4577 } | |
| 4578 | |
| 4579 /** | |
| 4580 * The base implementation of `_.has` without support for deep paths. | |
| 4581 * | |
| 4582 * @private | |
| 4583 * @param {Object} [object] The object to query. | |
| 4584 * @param {Array|string} key The key to check. | |
| 4585 * @returns {boolean} Returns `true` if `key` exists, else `false`. | |
| 4586 */ | |
| 4587 function baseHas(object, key) { | |
| 4588 return object != null && hasOwnProperty.call(object, key); | |
| 4589 } | |
| 4590 | |
| 4591 /** | |
| 4592 * The base implementation of `_.hasIn` without support for deep paths. | |
| 4593 * | |
| 4594 * @private | |
| 4595 * @param {Object} [object] The object to query. | |
| 4596 * @param {Array|string} key The key to check. | |
| 4597 * @returns {boolean} Returns `true` if `key` exists, else `false`. | |
| 4598 */ | |
| 4599 function baseHasIn(object, key) { | |
| 4600 return object != null && key in Object(object); | |
| 4601 } | |
| 4602 | |
| 4603 /** | |
| 4604 * The base implementation of `_.inRange` which doesn't coerce arguments. | |
| 4605 * | |
| 4606 * @private | |
| 4607 * @param {number} number The number to check. | |
| 4608 * @param {number} start The start of the range. | |
| 4609 * @param {number} end The end of the range. | |
| 4610 * @returns {boolean} Returns `true` if `number` is in the range, else `false`. | |
| 4611 */ | |
| 4612 function baseInRange(number, start, end) { | |
| 4613 return number >= nativeMin(start, end) && number < nativeMax(start, end); | |
| 4614 } | |
| 4615 | |
| 4616 /** | |
| 4617 * The base implementation of methods like `_.intersection`, without support | |
| 4618 * for iteratee shorthands, that accepts an array of arrays to inspect. | |
| 4619 * | |
| 4620 * @private | |
| 4621 * @param {Array} arrays The arrays to inspect. | |
| 4622 * @param {Function} [iteratee] The iteratee invoked per element. | |
| 4623 * @param {Function} [comparator] The comparator invoked per element. | |
| 4624 * @returns {Array} Returns the new array of shared values. | |
| 4625 */ | |
| 4626 function baseIntersection(arrays, iteratee, comparator) { | |
| 4627 var includes = comparator ? arrayIncludesWith : arrayIncludes, | |
| 4628 length = arrays[0].length, | |
| 4629 othLength = arrays.length, | |
| 4630 othIndex = othLength, | |
| 4631 caches = Array(othLength), | |
| 4632 maxLength = Infinity, | |
| 4633 result = []; | |
| 4634 | |
| 4635 while (othIndex--) { | |
| 4636 var array = arrays[othIndex]; | |
| 4637 if (othIndex && iteratee) { | |
| 4638 array = arrayMap(array, baseUnary(iteratee)); | |
| 4639 } | |
| 4640 maxLength = nativeMin(array.length, maxLength); | |
| 4641 caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120)) | |
| 4642 ? new SetCache(othIndex && array) | |
| 4643 : undefined; | |
| 4644 } | |
| 4645 array = arrays[0]; | |
| 4646 | |
| 4647 var index = -1, | |
| 4648 seen = caches[0]; | |
| 4649 | |
| 4650 outer: | |
| 4651 while (++index < length && result.length < maxLength) { | |
| 4652 var value = array[index], | |
| 4653 computed = iteratee ? iteratee(value) : value; | |
| 4654 | |
| 4655 value = (comparator || value !== 0) ? value : 0; | |
| 4656 if (!(seen | |
| 4657 ? cacheHas(seen, computed) | |
| 4658 : includes(result, computed, comparator) | |
| 4659 )) { | |
| 4660 othIndex = othLength; | |
| 4661 while (--othIndex) { | |
| 4662 var cache = caches[othIndex]; | |
| 4663 if (!(cache | |
| 4664 ? cacheHas(cache, computed) | |
| 4665 : includes(arrays[othIndex], computed, comparator)) | |
| 4666 ) { | |
| 4667 continue outer; | |
| 4668 } | |
| 4669 } | |
| 4670 if (seen) { | |
| 4671 seen.push(computed); | |
| 4672 } | |
| 4673 result.push(value); | |
| 4674 } | |
| 4675 } | |
| 4676 return result; | |
| 4677 } | |
| 4678 | |
| 4679 /** | |
| 4680 * The base implementation of `_.invert` and `_.invertBy` which inverts | |
| 4681 * `object` with values transformed by `iteratee` and set by `setter`. | |
| 4682 * | |
| 4683 * @private | |
| 4684 * @param {Object} object The object to iterate over. | |
| 4685 * @param {Function} setter The function to set `accumulator` values. | |
| 4686 * @param {Function} iteratee The iteratee to transform values. | |
| 4687 * @param {Object} accumulator The initial inverted object. | |
| 4688 * @returns {Function} Returns `accumulator`. | |
| 4689 */ | |
| 4690 function baseInverter(object, setter, iteratee, accumulator) { | |
| 4691 baseForOwn(object, function(value, key, object) { | |
| 4692 setter(accumulator, iteratee(value), key, object); | |
| 4693 }); | |
| 4694 return accumulator; | |
| 4695 } | |
| 4696 | |
| 4697 /** | |
| 4698 * The base implementation of `_.invoke` without support for individual | |
| 4699 * method arguments. | |
| 4700 * | |
| 4701 * @private | |
| 4702 * @param {Object} object The object to query. | |
| 4703 * @param {Array|string} path The path of the method to invoke. | |
| 4704 * @param {Array} args The arguments to invoke the method with. | |
| 4705 * @returns {*} Returns the result of the invoked method. | |
| 4706 */ | |
| 4707 function baseInvoke(object, path, args) { | |
| 4708 path = castPath(path, object); | |
| 4709 object = parent(object, path); | |
| 4710 var func = object == null ? object : object[toKey(last(path))]; | |
| 4711 return func == null ? undefined : apply(func, object, args); | |
| 4712 } | |
| 4713 | |
| 4714 /** | |
| 4715 * The base implementation of `_.isArguments`. | |
| 4716 * | |
| 4717 * @private | |
| 4718 * @param {*} value The value to check. | |
| 4719 * @returns {boolean} Returns `true` if `value` is an `arguments` object, | |
| 4720 */ | |
| 4721 function baseIsArguments(value) { | |
| 4722 return isObjectLike(value) && baseGetTag(value) == argsTag; | |
| 4723 } | |
| 4724 | |
| 4725 /** | |
| 4726 * The base implementation of `_.isArrayBuffer` without Node.js optimizations. | |
| 4727 * | |
| 4728 * @private | |
| 4729 * @param {*} value The value to check. | |
| 4730 * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. | |
| 4731 */ | |
| 4732 function baseIsArrayBuffer(value) { | |
| 4733 return isObjectLike(value) && baseGetTag(value) == arrayBufferTag; | |
| 4734 } | |
| 4735 | |
| 4736 /** | |
| 4737 * The base implementation of `_.isDate` without Node.js optimizations. | |
| 4738 * | |
| 4739 * @private | |
| 4740 * @param {*} value The value to check. | |
| 4741 * @returns {boolean} Returns `true` if `value` is a date object, else `false`. | |
| 4742 */ | |
| 4743 function baseIsDate(value) { | |
| 4744 return isObjectLike(value) && baseGetTag(value) == dateTag; | |
| 4745 } | |
| 4746 | |
| 4747 /** | |
| 4748 * The base implementation of `_.isEqual` which supports partial comparisons | |
| 4749 * and tracks traversed objects. | |
| 4750 * | |
| 4751 * @private | |
| 4752 * @param {*} value The value to compare. | |
| 4753 * @param {*} other The other value to compare. | |
| 4754 * @param {boolean} bitmask The bitmask flags. | |
| 4755 * 1 - Unordered comparison | |
| 4756 * 2 - Partial comparison | |
| 4757 * @param {Function} [customizer] The function to customize comparisons. | |
| 4758 * @param {Object} [stack] Tracks traversed `value` and `other` objects. | |
| 4759 * @returns {boolean} Returns `true` if the values are equivalent, else `false`. | |
| 4760 */ | |
| 4761 function baseIsEqual(value, other, bitmask, customizer, stack) { | |
| 4762 if (value === other) { | |
| 4763 return true; | |
| 4764 } | |
| 4765 if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) { | |
| 4766 return value !== value && other !== other; | |
| 4767 } | |
| 4768 return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack); | |
| 4769 } | |
| 4770 | |
| 4771 /** | |
| 4772 * A specialized version of `baseIsEqual` for arrays and objects which performs | |
| 4773 * deep comparisons and tracks traversed objects enabling objects with circular | |
| 4774 * references to be compared. | |
| 4775 * | |
| 4776 * @private | |
| 4777 * @param {Object} object The object to compare. | |
| 4778 * @param {Object} other The other object to compare. | |
| 4779 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. | |
| 4780 * @param {Function} customizer The function to customize comparisons. | |
| 4781 * @param {Function} equalFunc The function to determine equivalents of values. | |
| 4782 * @param {Object} [stack] Tracks traversed `object` and `other` objects. | |
| 4783 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. | |
| 4784 */ | |
| 4785 function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) { | |
| 4786 var objIsArr = isArray(object), | |
| 4787 othIsArr = isArray(other), | |
| 4788 objTag = objIsArr ? arrayTag : getTag(object), | |
| 4789 othTag = othIsArr ? arrayTag : getTag(other); | |
| 4790 | |
| 4791 objTag = objTag == argsTag ? objectTag : objTag; | |
| 4792 othTag = othTag == argsTag ? objectTag : othTag; | |
| 4793 | |
| 4794 var objIsObj = objTag == objectTag, | |
| 4795 othIsObj = othTag == objectTag, | |
| 4796 isSameTag = objTag == othTag; | |
| 4797 | |
| 4798 if (isSameTag && isBuffer(object)) { | |
| 4799 if (!isBuffer(other)) { | |
| 4800 return false; | |
| 4801 } | |
| 4802 objIsArr = true; | |
| 4803 objIsObj = false; | |
| 4804 } | |
| 4805 if (isSameTag && !objIsObj) { | |
| 4806 stack || (stack = new Stack); | |
| 4807 return (objIsArr || isTypedArray(object)) | |
| 4808 ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) | |
| 4809 : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack); | |
| 4810 } | |
| 4811 if (!(bitmask & COMPARE_PARTIAL_FLAG)) { | |
| 4812 var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), | |
| 4813 othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); | |
| 4814 | |
| 4815 if (objIsWrapped || othIsWrapped) { | |
| 4816 var objUnwrapped = objIsWrapped ? object.value() : object, | |
| 4817 othUnwrapped = othIsWrapped ? other.value() : other; | |
| 4818 | |
| 4819 stack || (stack = new Stack); | |
| 4820 return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack); | |
| 4821 } | |
| 4822 } | |
| 4823 if (!isSameTag) { | |
| 4824 return false; | |
| 4825 } | |
| 4826 stack || (stack = new Stack); | |
| 4827 return equalObjects(object, other, bitmask, customizer, equalFunc, stack); | |
| 4828 } | |
| 4829 | |
| 4830 /** | |
| 4831 * The base implementation of `_.isMap` without Node.js optimizations. | |
| 4832 * | |
| 4833 * @private | |
| 4834 * @param {*} value The value to check. | |
| 4835 * @returns {boolean} Returns `true` if `value` is a map, else `false`. | |
| 4836 */ | |
| 4837 function baseIsMap(value) { | |
| 4838 return isObjectLike(value) && getTag(value) == mapTag; | |
| 4839 } | |
| 4840 | |
| 4841 /** | |
| 4842 * The base implementation of `_.isMatch` without support for iteratee shorthands. | |
| 4843 * | |
| 4844 * @private | |
| 4845 * @param {Object} object The object to inspect. | |
| 4846 * @param {Object} source The object of property values to match. | |
| 4847 * @param {Array} matchData The property names, values, and compare flags to match. | |
| 4848 * @param {Function} [customizer] The function to customize comparisons. | |
| 4849 * @returns {boolean} Returns `true` if `object` is a match, else `false`. | |
| 4850 */ | |
| 4851 function baseIsMatch(object, source, matchData, customizer) { | |
| 4852 var index = matchData.length, | |
| 4853 length = index, | |
| 4854 noCustomizer = !customizer; | |
| 4855 | |
| 4856 if (object == null) { | |
| 4857 return !length; | |
| 4858 } | |
| 4859 object = Object(object); | |
| 4860 while (index--) { | |
| 4861 var data = matchData[index]; | |
| 4862 if ((noCustomizer && data[2]) | |
| 4863 ? data[1] !== object[data[0]] | |
| 4864 : !(data[0] in object) | |
| 4865 ) { | |
| 4866 return false; | |
| 4867 } | |
| 4868 } | |
| 4869 while (++index < length) { | |
| 4870 data = matchData[index]; | |
| 4871 var key = data[0], | |
| 4872 objValue = object[key], | |
| 4873 srcValue = data[1]; | |
| 4874 | |
| 4875 if (noCustomizer && data[2]) { | |
| 4876 if (objValue === undefined && !(key in object)) { | |
| 4877 return false; | |
| 4878 } | |
| 4879 } else { | |
| 4880 var stack = new Stack; | |
| 4881 if (customizer) { | |
| 4882 var result = customizer(objValue, srcValue, key, object, source, stack); | |
| 4883 } | |
| 4884 if (!(result === undefined | |
| 4885 ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) | |
| 4886 : result | |
| 4887 )) { | |
| 4888 return false; | |
| 4889 } | |
| 4890 } | |
| 4891 } | |
| 4892 return true; | |
| 4893 } | |
| 4894 | |
| 4895 /** | |
| 4896 * The base implementation of `_.isNative` without bad shim checks. | |
| 4897 * | |
| 4898 * @private | |
| 4899 * @param {*} value The value to check. | |
| 4900 * @returns {boolean} Returns `true` if `value` is a native function, | |
| 4901 * else `false`. | |
| 4902 */ | |
| 4903 function baseIsNative(value) { | |
| 4904 if (!isObject(value) || isMasked(value)) { | |
| 4905 return false; | |
| 4906 } | |
| 4907 var pattern = isFunction(value) ? reIsNative : reIsHostCtor; | |
| 4908 return pattern.test(toSource(value)); | |
| 4909 } | |
| 4910 | |
| 4911 /** | |
| 4912 * The base implementation of `_.isRegExp` without Node.js optimizations. | |
| 4913 * | |
| 4914 * @private | |
| 4915 * @param {*} value The value to check. | |
| 4916 * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. | |
| 4917 */ | |
| 4918 function baseIsRegExp(value) { | |
| 4919 return isObjectLike(value) && baseGetTag(value) == regexpTag; | |
| 4920 } | |
| 4921 | |
| 4922 /** | |
| 4923 * The base implementation of `_.isSet` without Node.js optimizations. | |
| 4924 * | |
| 4925 * @private | |
| 4926 * @param {*} value The value to check. | |
| 4927 * @returns {boolean} Returns `true` if `value` is a set, else `false`. | |
| 4928 */ | |
| 4929 function baseIsSet(value) { | |
| 4930 return isObjectLike(value) && getTag(value) == setTag; | |
| 4931 } | |
| 4932 | |
| 4933 /** | |
| 4934 * The base implementation of `_.isTypedArray` without Node.js optimizations. | |
| 4935 * | |
| 4936 * @private | |
| 4937 * @param {*} value The value to check. | |
| 4938 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. | |
| 4939 */ | |
| 4940 function baseIsTypedArray(value) { | |
| 4941 return isObjectLike(value) && | |
| 4942 isLength(value.length) && !!typedArrayTags[baseGetTag(value)]; | |
| 4943 } | |
| 4944 | |
| 4945 /** | |
| 4946 * The base implementation of `_.iteratee`. | |
| 4947 * | |
| 4948 * @private | |
| 4949 * @param {*} [value=_.identity] The value to convert to an iteratee. | |
| 4950 * @returns {Function} Returns the iteratee. | |
| 4951 */ | |
| 4952 function baseIteratee(value) { | |
| 4953 // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9. | |
| 4954 // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details. | |
| 4955 if (typeof value == 'function') { | |
| 4956 return value; | |
| 4957 } | |
| 4958 if (value == null) { | |
| 4959 return identity; | |
| 4960 } | |
| 4961 if (typeof value == 'object') { | |
| 4962 return isArray(value) | |
| 4963 ? baseMatchesProperty(value[0], value[1]) | |
| 4964 : baseMatches(value); | |
| 4965 } | |
| 4966 return property(value); | |
| 4967 } | |
| 4968 | |
| 4969 /** | |
| 4970 * The base implementation of `_.keys` which doesn't treat sparse arrays as dense. | |
| 4971 * | |
| 4972 * @private | |
| 4973 * @param {Object} object The object to query. | |
| 4974 * @returns {Array} Returns the array of property names. | |
| 4975 */ | |
| 4976 function baseKeys(object) { | |
| 4977 if (!isPrototype(object)) { | |
| 4978 return nativeKeys(object); | |
| 4979 } | |
| 4980 var result = []; | |
| 4981 for (var key in Object(object)) { | |
| 4982 if (hasOwnProperty.call(object, key) && key != 'constructor') { | |
| 4983 result.push(key); | |
| 4984 } | |
| 4985 } | |
| 4986 return result; | |
| 4987 } | |
| 4988 | |
| 4989 /** | |
| 4990 * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense. | |
| 4991 * | |
| 4992 * @private | |
| 4993 * @param {Object} object The object to query. | |
| 4994 * @returns {Array} Returns the array of property names. | |
| 4995 */ | |
| 4996 function baseKeysIn(object) { | |
| 4997 if (!isObject(object)) { | |
| 4998 return nativeKeysIn(object); | |
| 4999 } | |
| 5000 var isProto = isPrototype(object), | |
| 5001 result = []; | |
| 5002 | |
| 5003 for (var key in object) { | |
| 5004 if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { | |
| 5005 result.push(key); | |
| 5006 } | |
| 5007 } | |
| 5008 return result; | |
| 5009 } | |
| 5010 | |
| 5011 /** | |
| 5012 * The base implementation of `_.lt` which doesn't coerce arguments. | |
| 5013 * | |
| 5014 * @private | |
| 5015 * @param {*} value The value to compare. | |
| 5016 * @param {*} other The other value to compare. | |
| 5017 * @returns {boolean} Returns `true` if `value` is less than `other`, | |
| 5018 * else `false`. | |
| 5019 */ | |
| 5020 function baseLt(value, other) { | |
| 5021 return value < other; | |
| 5022 } | |
| 5023 | |
| 5024 /** | |
| 5025 * The base implementation of `_.map` without support for iteratee shorthands. | |
| 5026 * | |
| 5027 * @private | |
| 5028 * @param {Array|Object} collection The collection to iterate over. | |
| 5029 * @param {Function} iteratee The function invoked per iteration. | |
| 5030 * @returns {Array} Returns the new mapped array. | |
| 5031 */ | |
| 5032 function baseMap(collection, iteratee) { | |
| 5033 var index = -1, | |
| 5034 result = isArrayLike(collection) ? Array(collection.length) : []; | |
| 5035 | |
| 5036 baseEach(collection, function(value, key, collection) { | |
| 5037 result[++index] = iteratee(value, key, collection); | |
| 5038 }); | |
| 5039 return result; | |
| 5040 } | |
| 5041 | |
| 5042 /** | |
| 5043 * The base implementation of `_.matches` which doesn't clone `source`. | |
| 5044 * | |
| 5045 * @private | |
| 5046 * @param {Object} source The object of property values to match. | |
| 5047 * @returns {Function} Returns the new spec function. | |
| 5048 */ | |
| 5049 function baseMatches(source) { | |
| 5050 var matchData = getMatchData(source); | |
| 5051 if (matchData.length == 1 && matchData[0][2]) { | |
| 5052 return matchesStrictComparable(matchData[0][0], matchData[0][1]); | |
| 5053 } | |
| 5054 return function(object) { | |
| 5055 return object === source || baseIsMatch(object, source, matchData); | |
| 5056 }; | |
| 5057 } | |
| 5058 | |
| 5059 /** | |
| 5060 * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`. | |
| 5061 * | |
| 5062 * @private | |
| 5063 * @param {string} path The path of the property to get. | |
| 5064 * @param {*} srcValue The value to match. | |
| 5065 * @returns {Function} Returns the new spec function. | |
| 5066 */ | |
| 5067 function baseMatchesProperty(path, srcValue) { | |
| 5068 if (isKey(path) && isStrictComparable(srcValue)) { | |
| 5069 return matchesStrictComparable(toKey(path), srcValue); | |
| 5070 } | |
| 5071 return function(object) { | |
| 5072 var objValue = get(object, path); | |
| 5073 return (objValue === undefined && objValue === srcValue) | |
| 5074 ? hasIn(object, path) | |
| 5075 : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG); | |
| 5076 }; | |
| 5077 } | |
| 5078 | |
| 5079 /** | |
| 5080 * The base implementation of `_.merge` without support for multiple sources. | |
| 5081 * | |
| 5082 * @private | |
| 5083 * @param {Object} object The destination object. | |
| 5084 * @param {Object} source The source object. | |
| 5085 * @param {number} srcIndex The index of `source`. | |
| 5086 * @param {Function} [customizer] The function to customize merged values. | |
| 5087 * @param {Object} [stack] Tracks traversed source values and their merged | |
| 5088 * counterparts. | |
| 5089 */ | |
| 5090 function baseMerge(object, source, srcIndex, customizer, stack) { | |
| 5091 if (object === source) { | |
| 5092 return; | |
| 5093 } | |
| 5094 baseFor(source, function(srcValue, key) { | |
| 5095 stack || (stack = new Stack); | |
| 5096 if (isObject(srcValue)) { | |
| 5097 baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack); | |
| 5098 } | |
| 5099 else { | |
| 5100 var newValue = customizer | |
| 5101 ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack) | |
| 5102 : undefined; | |
| 5103 | |
| 5104 if (newValue === undefined) { | |
| 5105 newValue = srcValue; | |
| 5106 } | |
| 5107 assignMergeValue(object, key, newValue); | |
| 5108 } | |
| 5109 }, keysIn); | |
| 5110 } | |
| 5111 | |
| 5112 /** | |
| 5113 * A specialized version of `baseMerge` for arrays and objects which performs | |
| 5114 * deep merges and tracks traversed objects enabling objects with circular | |
| 5115 * references to be merged. | |
| 5116 * | |
| 5117 * @private | |
| 5118 * @param {Object} object The destination object. | |
| 5119 * @param {Object} source The source object. | |
| 5120 * @param {string} key The key of the value to merge. | |
| 5121 * @param {number} srcIndex The index of `source`. | |
| 5122 * @param {Function} mergeFunc The function to merge values. | |
| 5123 * @param {Function} [customizer] The function to customize assigned values. | |
| 5124 * @param {Object} [stack] Tracks traversed source values and their merged | |
| 5125 * counterparts. | |
| 5126 */ | |
| 5127 function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) { | |
| 5128 var objValue = safeGet(object, key), | |
| 5129 srcValue = safeGet(source, key), | |
| 5130 stacked = stack.get(srcValue); | |
| 5131 | |
| 5132 if (stacked) { | |
| 5133 assignMergeValue(object, key, stacked); | |
| 5134 return; | |
| 5135 } | |
| 5136 var newValue = customizer | |
| 5137 ? customizer(objValue, srcValue, (key + ''), object, source, stack) | |
| 5138 : undefined; | |
| 5139 | |
| 5140 var isCommon = newValue === undefined; | |
| 5141 | |
| 5142 if (isCommon) { | |
| 5143 var isArr = isArray(srcValue), | |
| 5144 isBuff = !isArr && isBuffer(srcValue), | |
| 5145 isTyped = !isArr && !isBuff && isTypedArray(srcValue); | |
| 5146 | |
| 5147 newValue = srcValue; | |
| 5148 if (isArr || isBuff || isTyped) { | |
| 5149 if (isArray(objValue)) { | |
| 5150 newValue = objValue; | |
| 5151 } | |
| 5152 else if (isArrayLikeObject(objValue)) { | |
| 5153 newValue = copyArray(objValue); | |
| 5154 } | |
| 5155 else if (isBuff) { | |
| 5156 isCommon = false; | |
| 5157 newValue = cloneBuffer(srcValue, true); | |
| 5158 } | |
| 5159 else if (isTyped) { | |
| 5160 isCommon = false; | |
| 5161 newValue = cloneTypedArray(srcValue, true); | |
| 5162 } | |
| 5163 else { | |
| 5164 newValue = []; | |
| 5165 } | |
| 5166 } | |
| 5167 else if (isPlainObject(srcValue) || isArguments(srcValue)) { | |
| 5168 newValue = objValue; | |
| 5169 if (isArguments(objValue)) { | |
| 5170 newValue = toPlainObject(objValue); | |
| 5171 } | |
| 5172 else if (!isObject(objValue) || isFunction(objValue)) { | |
| 5173 newValue = initCloneObject(srcValue); | |
| 5174 } | |
| 5175 } | |
| 5176 else { | |
| 5177 isCommon = false; | |
| 5178 } | |
| 5179 } | |
| 5180 if (isCommon) { | |
| 5181 // Recursively merge objects and arrays (susceptible to call stack limits). | |
| 5182 stack.set(srcValue, newValue); | |
| 5183 mergeFunc(newValue, srcValue, srcIndex, customizer, stack); | |
| 5184 stack['delete'](srcValue); | |
| 5185 } | |
| 5186 assignMergeValue(object, key, newValue); | |
| 5187 } | |
| 5188 | |
| 5189 /** | |
| 5190 * The base implementation of `_.nth` which doesn't coerce arguments. | |
| 5191 * | |
| 5192 * @private | |
| 5193 * @param {Array} array The array to query. | |
| 5194 * @param {number} n The index of the element to return. | |
| 5195 * @returns {*} Returns the nth element of `array`. | |
| 5196 */ | |
| 5197 function baseNth(array, n) { | |
| 5198 var length = array.length; | |
| 5199 if (!length) { | |
| 5200 return; | |
| 5201 } | |
| 5202 n += n < 0 ? length : 0; | |
| 5203 return isIndex(n, length) ? array[n] : undefined; | |
| 5204 } | |
| 5205 | |
| 5206 /** | |
| 5207 * The base implementation of `_.orderBy` without param guards. | |
| 5208 * | |
| 5209 * @private | |
| 5210 * @param {Array|Object} collection The collection to iterate over. | |
| 5211 * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. | |
| 5212 * @param {string[]} orders The sort orders of `iteratees`. | |
| 5213 * @returns {Array} Returns the new sorted array. | |
| 5214 */ | |
| 5215 function baseOrderBy(collection, iteratees, orders) { | |
| 5216 if (iteratees.length) { | |
| 5217 iteratees = arrayMap(iteratees, function(iteratee) { | |
| 5218 if (isArray(iteratee)) { | |
| 5219 return function(value) { | |
| 5220 return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee); | |
| 5221 } | |
| 5222 } | |
| 5223 return iteratee; | |
| 5224 }); | |
| 5225 } else { | |
| 5226 iteratees = [identity]; | |
| 5227 } | |
| 5228 | |
| 5229 var index = -1; | |
| 5230 iteratees = arrayMap(iteratees, baseUnary(getIteratee())); | |
| 5231 | |
| 5232 var result = baseMap(collection, function(value, key, collection) { | |
| 5233 var criteria = arrayMap(iteratees, function(iteratee) { | |
| 5234 return iteratee(value); | |
| 5235 }); | |
| 5236 return { 'criteria': criteria, 'index': ++index, 'value': value }; | |
| 5237 }); | |
| 5238 | |
| 5239 return baseSortBy(result, function(object, other) { | |
| 5240 return compareMultiple(object, other, orders); | |
| 5241 }); | |
| 5242 } | |
| 5243 | |
| 5244 /** | |
| 5245 * The base implementation of `_.pick` without support for individual | |
| 5246 * property identifiers. | |
| 5247 * | |
| 5248 * @private | |
| 5249 * @param {Object} object The source object. | |
| 5250 * @param {string[]} paths The property paths to pick. | |
| 5251 * @returns {Object} Returns the new object. | |
| 5252 */ | |
| 5253 function basePick(object, paths) { | |
| 5254 return basePickBy(object, paths, function(value, path) { | |
| 5255 return hasIn(object, path); | |
| 5256 }); | |
| 5257 } | |
| 5258 | |
| 5259 /** | |
| 5260 * The base implementation of `_.pickBy` without support for iteratee shorthands. | |
| 5261 * | |
| 5262 * @private | |
| 5263 * @param {Object} object The source object. | |
| 5264 * @param {string[]} paths The property paths to pick. | |
| 5265 * @param {Function} predicate The function invoked per property. | |
| 5266 * @returns {Object} Returns the new object. | |
| 5267 */ | |
| 5268 function basePickBy(object, paths, predicate) { | |
| 5269 var index = -1, | |
| 5270 length = paths.length, | |
| 5271 result = {}; | |
| 5272 | |
| 5273 while (++index < length) { | |
| 5274 var path = paths[index], | |
| 5275 value = baseGet(object, path); | |
| 5276 | |
| 5277 if (predicate(value, path)) { | |
| 5278 baseSet(result, castPath(path, object), value); | |
| 5279 } | |
| 5280 } | |
| 5281 return result; | |
| 5282 } | |
| 5283 | |
| 5284 /** | |
| 5285 * A specialized version of `baseProperty` which supports deep paths. | |
| 5286 * | |
| 5287 * @private | |
| 5288 * @param {Array|string} path The path of the property to get. | |
| 5289 * @returns {Function} Returns the new accessor function. | |
| 5290 */ | |
| 5291 function basePropertyDeep(path) { | |
| 5292 return function(object) { | |
| 5293 return baseGet(object, path); | |
| 5294 }; | |
| 5295 } | |
| 5296 | |
| 5297 /** | |
| 5298 * The base implementation of `_.pullAllBy` without support for iteratee | |
| 5299 * shorthands. | |
| 5300 * | |
| 5301 * @private | |
| 5302 * @param {Array} array The array to modify. | |
| 5303 * @param {Array} values The values to remove. | |
| 5304 * @param {Function} [iteratee] The iteratee invoked per element. | |
| 5305 * @param {Function} [comparator] The comparator invoked per element. | |
| 5306 * @returns {Array} Returns `array`. | |
| 5307 */ | |
| 5308 function basePullAll(array, values, iteratee, comparator) { | |
| 5309 var indexOf = comparator ? baseIndexOfWith : baseIndexOf, | |
| 5310 index = -1, | |
| 5311 length = values.length, | |
| 5312 seen = array; | |
| 5313 | |
| 5314 if (array === values) { | |
| 5315 values = copyArray(values); | |
| 5316 } | |
| 5317 if (iteratee) { | |
| 5318 seen = arrayMap(array, baseUnary(iteratee)); | |
| 5319 } | |
| 5320 while (++index < length) { | |
| 5321 var fromIndex = 0, | |
| 5322 value = values[index], | |
| 5323 computed = iteratee ? iteratee(value) : value; | |
| 5324 | |
| 5325 while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) { | |
| 5326 if (seen !== array) { | |
| 5327 splice.call(seen, fromIndex, 1); | |
| 5328 } | |
| 5329 splice.call(array, fromIndex, 1); | |
| 5330 } | |
| 5331 } | |
| 5332 return array; | |
| 5333 } | |
| 5334 | |
| 5335 /** | |
| 5336 * The base implementation of `_.pullAt` without support for individual | |
| 5337 * indexes or capturing the removed elements. | |
| 5338 * | |
| 5339 * @private | |
| 5340 * @param {Array} array The array to modify. | |
| 5341 * @param {number[]} indexes The indexes of elements to remove. | |
| 5342 * @returns {Array} Returns `array`. | |
| 5343 */ | |
| 5344 function basePullAt(array, indexes) { | |
| 5345 var length = array ? indexes.length : 0, | |
| 5346 lastIndex = length - 1; | |
| 5347 | |
| 5348 while (length--) { | |
| 5349 var index = indexes[length]; | |
| 5350 if (length == lastIndex || index !== previous) { | |
| 5351 var previous = index; | |
| 5352 if (isIndex(index)) { | |
| 5353 splice.call(array, index, 1); | |
| 5354 } else { | |
| 5355 baseUnset(array, index); | |
| 5356 } | |
| 5357 } | |
| 5358 } | |
| 5359 return array; | |
| 5360 } | |
| 5361 | |
| 5362 /** | |
| 5363 * The base implementation of `_.random` without support for returning | |
| 5364 * floating-point numbers. | |
| 5365 * | |
| 5366 * @private | |
| 5367 * @param {number} lower The lower bound. | |
| 5368 * @param {number} upper The upper bound. | |
| 5369 * @returns {number} Returns the random number. | |
| 5370 */ | |
| 5371 function baseRandom(lower, upper) { | |
| 5372 return lower + nativeFloor(nativeRandom() * (upper - lower + 1)); | |
| 5373 } | |
| 5374 | |
| 5375 /** | |
| 5376 * The base implementation of `_.range` and `_.rangeRight` which doesn't | |
| 5377 * coerce arguments. | |
| 5378 * | |
| 5379 * @private | |
| 5380 * @param {number} start The start of the range. | |
| 5381 * @param {number} end The end of the range. | |
| 5382 * @param {number} step The value to increment or decrement by. | |
| 5383 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 5384 * @returns {Array} Returns the range of numbers. | |
| 5385 */ | |
| 5386 function baseRange(start, end, step, fromRight) { | |
| 5387 var index = -1, | |
| 5388 length = nativeMax(nativeCeil((end - start) / (step || 1)), 0), | |
| 5389 result = Array(length); | |
| 5390 | |
| 5391 while (length--) { | |
| 5392 result[fromRight ? length : ++index] = start; | |
| 5393 start += step; | |
| 5394 } | |
| 5395 return result; | |
| 5396 } | |
| 5397 | |
| 5398 /** | |
| 5399 * The base implementation of `_.repeat` which doesn't coerce arguments. | |
| 5400 * | |
| 5401 * @private | |
| 5402 * @param {string} string The string to repeat. | |
| 5403 * @param {number} n The number of times to repeat the string. | |
| 5404 * @returns {string} Returns the repeated string. | |
| 5405 */ | |
| 5406 function baseRepeat(string, n) { | |
| 5407 var result = ''; | |
| 5408 if (!string || n < 1 || n > MAX_SAFE_INTEGER) { | |
| 5409 return result; | |
| 5410 } | |
| 5411 // Leverage the exponentiation by squaring algorithm for a faster repeat. | |
| 5412 // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. | |
| 5413 do { | |
| 5414 if (n % 2) { | |
| 5415 result += string; | |
| 5416 } | |
| 5417 n = nativeFloor(n / 2); | |
| 5418 if (n) { | |
| 5419 string += string; | |
| 5420 } | |
| 5421 } while (n); | |
| 5422 | |
| 5423 return result; | |
| 5424 } | |
| 5425 | |
| 5426 /** | |
| 5427 * The base implementation of `_.rest` which doesn't validate or coerce arguments. | |
| 5428 * | |
| 5429 * @private | |
| 5430 * @param {Function} func The function to apply a rest parameter to. | |
| 5431 * @param {number} [start=func.length-1] The start position of the rest parameter. | |
| 5432 * @returns {Function} Returns the new function. | |
| 5433 */ | |
| 5434 function baseRest(func, start) { | |
| 5435 return setToString(overRest(func, start, identity), func + ''); | |
| 5436 } | |
| 5437 | |
| 5438 /** | |
| 5439 * The base implementation of `_.sample`. | |
| 5440 * | |
| 5441 * @private | |
| 5442 * @param {Array|Object} collection The collection to sample. | |
| 5443 * @returns {*} Returns the random element. | |
| 5444 */ | |
| 5445 function baseSample(collection) { | |
| 5446 return arraySample(values(collection)); | |
| 5447 } | |
| 5448 | |
| 5449 /** | |
| 5450 * The base implementation of `_.sampleSize` without param guards. | |
| 5451 * | |
| 5452 * @private | |
| 5453 * @param {Array|Object} collection The collection to sample. | |
| 5454 * @param {number} n The number of elements to sample. | |
| 5455 * @returns {Array} Returns the random elements. | |
| 5456 */ | |
| 5457 function baseSampleSize(collection, n) { | |
| 5458 var array = values(collection); | |
| 5459 return shuffleSelf(array, baseClamp(n, 0, array.length)); | |
| 5460 } | |
| 5461 | |
| 5462 /** | |
| 5463 * The base implementation of `_.set`. | |
| 5464 * | |
| 5465 * @private | |
| 5466 * @param {Object} object The object to modify. | |
| 5467 * @param {Array|string} path The path of the property to set. | |
| 5468 * @param {*} value The value to set. | |
| 5469 * @param {Function} [customizer] The function to customize path creation. | |
| 5470 * @returns {Object} Returns `object`. | |
| 5471 */ | |
| 5472 function baseSet(object, path, value, customizer) { | |
| 5473 if (!isObject(object)) { | |
| 5474 return object; | |
| 5475 } | |
| 5476 path = castPath(path, object); | |
| 5477 | |
| 5478 var index = -1, | |
| 5479 length = path.length, | |
| 5480 lastIndex = length - 1, | |
| 5481 nested = object; | |
| 5482 | |
| 5483 while (nested != null && ++index < length) { | |
| 5484 var key = toKey(path[index]), | |
| 5485 newValue = value; | |
| 5486 | |
| 5487 if (key === '__proto__' || key === 'constructor' || key === 'prototype') { | |
| 5488 return object; | |
| 5489 } | |
| 5490 | |
| 5491 if (index != lastIndex) { | |
| 5492 var objValue = nested[key]; | |
| 5493 newValue = customizer ? customizer(objValue, key, nested) : undefined; | |
| 5494 if (newValue === undefined) { | |
| 5495 newValue = isObject(objValue) | |
| 5496 ? objValue | |
| 5497 : (isIndex(path[index + 1]) ? [] : {}); | |
| 5498 } | |
| 5499 } | |
| 5500 assignValue(nested, key, newValue); | |
| 5501 nested = nested[key]; | |
| 5502 } | |
| 5503 return object; | |
| 5504 } | |
| 5505 | |
| 5506 /** | |
| 5507 * The base implementation of `setData` without support for hot loop shorting. | |
| 5508 * | |
| 5509 * @private | |
| 5510 * @param {Function} func The function to associate metadata with. | |
| 5511 * @param {*} data The metadata. | |
| 5512 * @returns {Function} Returns `func`. | |
| 5513 */ | |
| 5514 var baseSetData = !metaMap ? identity : function(func, data) { | |
| 5515 metaMap.set(func, data); | |
| 5516 return func; | |
| 5517 }; | |
| 5518 | |
| 5519 /** | |
| 5520 * The base implementation of `setToString` without support for hot loop shorting. | |
| 5521 * | |
| 5522 * @private | |
| 5523 * @param {Function} func The function to modify. | |
| 5524 * @param {Function} string The `toString` result. | |
| 5525 * @returns {Function} Returns `func`. | |
| 5526 */ | |
| 5527 var baseSetToString = !defineProperty ? identity : function(func, string) { | |
| 5528 return defineProperty(func, 'toString', { | |
| 5529 'configurable': true, | |
| 5530 'enumerable': false, | |
| 5531 'value': constant(string), | |
| 5532 'writable': true | |
| 5533 }); | |
| 5534 }; | |
| 5535 | |
| 5536 /** | |
| 5537 * The base implementation of `_.shuffle`. | |
| 5538 * | |
| 5539 * @private | |
| 5540 * @param {Array|Object} collection The collection to shuffle. | |
| 5541 * @returns {Array} Returns the new shuffled array. | |
| 5542 */ | |
| 5543 function baseShuffle(collection) { | |
| 5544 return shuffleSelf(values(collection)); | |
| 5545 } | |
| 5546 | |
| 5547 /** | |
| 5548 * The base implementation of `_.slice` without an iteratee call guard. | |
| 5549 * | |
| 5550 * @private | |
| 5551 * @param {Array} array The array to slice. | |
| 5552 * @param {number} [start=0] The start position. | |
| 5553 * @param {number} [end=array.length] The end position. | |
| 5554 * @returns {Array} Returns the slice of `array`. | |
| 5555 */ | |
| 5556 function baseSlice(array, start, end) { | |
| 5557 var index = -1, | |
| 5558 length = array.length; | |
| 5559 | |
| 5560 if (start < 0) { | |
| 5561 start = -start > length ? 0 : (length + start); | |
| 5562 } | |
| 5563 end = end > length ? length : end; | |
| 5564 if (end < 0) { | |
| 5565 end += length; | |
| 5566 } | |
| 5567 length = start > end ? 0 : ((end - start) >>> 0); | |
| 5568 start >>>= 0; | |
| 5569 | |
| 5570 var result = Array(length); | |
| 5571 while (++index < length) { | |
| 5572 result[index] = array[index + start]; | |
| 5573 } | |
| 5574 return result; | |
| 5575 } | |
| 5576 | |
| 5577 /** | |
| 5578 * The base implementation of `_.some` without support for iteratee shorthands. | |
| 5579 * | |
| 5580 * @private | |
| 5581 * @param {Array|Object} collection The collection to iterate over. | |
| 5582 * @param {Function} predicate The function invoked per iteration. | |
| 5583 * @returns {boolean} Returns `true` if any element passes the predicate check, | |
| 5584 * else `false`. | |
| 5585 */ | |
| 5586 function baseSome(collection, predicate) { | |
| 5587 var result; | |
| 5588 | |
| 5589 baseEach(collection, function(value, index, collection) { | |
| 5590 result = predicate(value, index, collection); | |
| 5591 return !result; | |
| 5592 }); | |
| 5593 return !!result; | |
| 5594 } | |
| 5595 | |
| 5596 /** | |
| 5597 * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which | |
| 5598 * performs a binary search of `array` to determine the index at which `value` | |
| 5599 * should be inserted into `array` in order to maintain its sort order. | |
| 5600 * | |
| 5601 * @private | |
| 5602 * @param {Array} array The sorted array to inspect. | |
| 5603 * @param {*} value The value to evaluate. | |
| 5604 * @param {boolean} [retHighest] Specify returning the highest qualified index. | |
| 5605 * @returns {number} Returns the index at which `value` should be inserted | |
| 5606 * into `array`. | |
| 5607 */ | |
| 5608 function baseSortedIndex(array, value, retHighest) { | |
| 5609 var low = 0, | |
| 5610 high = array == null ? low : array.length; | |
| 5611 | |
| 5612 if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { | |
| 5613 while (low < high) { | |
| 5614 var mid = (low + high) >>> 1, | |
| 5615 computed = array[mid]; | |
| 5616 | |
| 5617 if (computed !== null && !isSymbol(computed) && | |
| 5618 (retHighest ? (computed <= value) : (computed < value))) { | |
| 5619 low = mid + 1; | |
| 5620 } else { | |
| 5621 high = mid; | |
| 5622 } | |
| 5623 } | |
| 5624 return high; | |
| 5625 } | |
| 5626 return baseSortedIndexBy(array, value, identity, retHighest); | |
| 5627 } | |
| 5628 | |
| 5629 /** | |
| 5630 * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy` | |
| 5631 * which invokes `iteratee` for `value` and each element of `array` to compute | |
| 5632 * their sort ranking. The iteratee is invoked with one argument; (value). | |
| 5633 * | |
| 5634 * @private | |
| 5635 * @param {Array} array The sorted array to inspect. | |
| 5636 * @param {*} value The value to evaluate. | |
| 5637 * @param {Function} iteratee The iteratee invoked per element. | |
| 5638 * @param {boolean} [retHighest] Specify returning the highest qualified index. | |
| 5639 * @returns {number} Returns the index at which `value` should be inserted | |
| 5640 * into `array`. | |
| 5641 */ | |
| 5642 function baseSortedIndexBy(array, value, iteratee, retHighest) { | |
| 5643 var low = 0, | |
| 5644 high = array == null ? 0 : array.length; | |
| 5645 if (high === 0) { | |
| 5646 return 0; | |
| 5647 } | |
| 5648 | |
| 5649 value = iteratee(value); | |
| 5650 var valIsNaN = value !== value, | |
| 5651 valIsNull = value === null, | |
| 5652 valIsSymbol = isSymbol(value), | |
| 5653 valIsUndefined = value === undefined; | |
| 5654 | |
| 5655 while (low < high) { | |
| 5656 var mid = nativeFloor((low + high) / 2), | |
| 5657 computed = iteratee(array[mid]), | |
| 5658 othIsDefined = computed !== undefined, | |
| 5659 othIsNull = computed === null, | |
| 5660 othIsReflexive = computed === computed, | |
| 5661 othIsSymbol = isSymbol(computed); | |
| 5662 | |
| 5663 if (valIsNaN) { | |
| 5664 var setLow = retHighest || othIsReflexive; | |
| 5665 } else if (valIsUndefined) { | |
| 5666 setLow = othIsReflexive && (retHighest || othIsDefined); | |
| 5667 } else if (valIsNull) { | |
| 5668 setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull); | |
| 5669 } else if (valIsSymbol) { | |
| 5670 setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol); | |
| 5671 } else if (othIsNull || othIsSymbol) { | |
| 5672 setLow = false; | |
| 5673 } else { | |
| 5674 setLow = retHighest ? (computed <= value) : (computed < value); | |
| 5675 } | |
| 5676 if (setLow) { | |
| 5677 low = mid + 1; | |
| 5678 } else { | |
| 5679 high = mid; | |
| 5680 } | |
| 5681 } | |
| 5682 return nativeMin(high, MAX_ARRAY_INDEX); | |
| 5683 } | |
| 5684 | |
| 5685 /** | |
| 5686 * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without | |
| 5687 * support for iteratee shorthands. | |
| 5688 * | |
| 5689 * @private | |
| 5690 * @param {Array} array The array to inspect. | |
| 5691 * @param {Function} [iteratee] The iteratee invoked per element. | |
| 5692 * @returns {Array} Returns the new duplicate free array. | |
| 5693 */ | |
| 5694 function baseSortedUniq(array, iteratee) { | |
| 5695 var index = -1, | |
| 5696 length = array.length, | |
| 5697 resIndex = 0, | |
| 5698 result = []; | |
| 5699 | |
| 5700 while (++index < length) { | |
| 5701 var value = array[index], | |
| 5702 computed = iteratee ? iteratee(value) : value; | |
| 5703 | |
| 5704 if (!index || !eq(computed, seen)) { | |
| 5705 var seen = computed; | |
| 5706 result[resIndex++] = value === 0 ? 0 : value; | |
| 5707 } | |
| 5708 } | |
| 5709 return result; | |
| 5710 } | |
| 5711 | |
| 5712 /** | |
| 5713 * The base implementation of `_.toNumber` which doesn't ensure correct | |
| 5714 * conversions of binary, hexadecimal, or octal string values. | |
| 5715 * | |
| 5716 * @private | |
| 5717 * @param {*} value The value to process. | |
| 5718 * @returns {number} Returns the number. | |
| 5719 */ | |
| 5720 function baseToNumber(value) { | |
| 5721 if (typeof value == 'number') { | |
| 5722 return value; | |
| 5723 } | |
| 5724 if (isSymbol(value)) { | |
| 5725 return NAN; | |
| 5726 } | |
| 5727 return +value; | |
| 5728 } | |
| 5729 | |
| 5730 /** | |
| 5731 * The base implementation of `_.toString` which doesn't convert nullish | |
| 5732 * values to empty strings. | |
| 5733 * | |
| 5734 * @private | |
| 5735 * @param {*} value The value to process. | |
| 5736 * @returns {string} Returns the string. | |
| 5737 */ | |
| 5738 function baseToString(value) { | |
| 5739 // Exit early for strings to avoid a performance hit in some environments. | |
| 5740 if (typeof value == 'string') { | |
| 5741 return value; | |
| 5742 } | |
| 5743 if (isArray(value)) { | |
| 5744 // Recursively convert values (susceptible to call stack limits). | |
| 5745 return arrayMap(value, baseToString) + ''; | |
| 5746 } | |
| 5747 if (isSymbol(value)) { | |
| 5748 return symbolToString ? symbolToString.call(value) : ''; | |
| 5749 } | |
| 5750 var result = (value + ''); | |
| 5751 return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; | |
| 5752 } | |
| 5753 | |
| 5754 /** | |
| 5755 * The base implementation of `_.uniqBy` without support for iteratee shorthands. | |
| 5756 * | |
| 5757 * @private | |
| 5758 * @param {Array} array The array to inspect. | |
| 5759 * @param {Function} [iteratee] The iteratee invoked per element. | |
| 5760 * @param {Function} [comparator] The comparator invoked per element. | |
| 5761 * @returns {Array} Returns the new duplicate free array. | |
| 5762 */ | |
| 5763 function baseUniq(array, iteratee, comparator) { | |
| 5764 var index = -1, | |
| 5765 includes = arrayIncludes, | |
| 5766 length = array.length, | |
| 5767 isCommon = true, | |
| 5768 result = [], | |
| 5769 seen = result; | |
| 5770 | |
| 5771 if (comparator) { | |
| 5772 isCommon = false; | |
| 5773 includes = arrayIncludesWith; | |
| 5774 } | |
| 5775 else if (length >= LARGE_ARRAY_SIZE) { | |
| 5776 var set = iteratee ? null : createSet(array); | |
| 5777 if (set) { | |
| 5778 return setToArray(set); | |
| 5779 } | |
| 5780 isCommon = false; | |
| 5781 includes = cacheHas; | |
| 5782 seen = new SetCache; | |
| 5783 } | |
| 5784 else { | |
| 5785 seen = iteratee ? [] : result; | |
| 5786 } | |
| 5787 outer: | |
| 5788 while (++index < length) { | |
| 5789 var value = array[index], | |
| 5790 computed = iteratee ? iteratee(value) : value; | |
| 5791 | |
| 5792 value = (comparator || value !== 0) ? value : 0; | |
| 5793 if (isCommon && computed === computed) { | |
| 5794 var seenIndex = seen.length; | |
| 5795 while (seenIndex--) { | |
| 5796 if (seen[seenIndex] === computed) { | |
| 5797 continue outer; | |
| 5798 } | |
| 5799 } | |
| 5800 if (iteratee) { | |
| 5801 seen.push(computed); | |
| 5802 } | |
| 5803 result.push(value); | |
| 5804 } | |
| 5805 else if (!includes(seen, computed, comparator)) { | |
| 5806 if (seen !== result) { | |
| 5807 seen.push(computed); | |
| 5808 } | |
| 5809 result.push(value); | |
| 5810 } | |
| 5811 } | |
| 5812 return result; | |
| 5813 } | |
| 5814 | |
| 5815 /** | |
| 5816 * The base implementation of `_.unset`. | |
| 5817 * | |
| 5818 * @private | |
| 5819 * @param {Object} object The object to modify. | |
| 5820 * @param {Array|string} path The property path to unset. | |
| 5821 * @returns {boolean} Returns `true` if the property is deleted, else `false`. | |
| 5822 */ | |
| 5823 function baseUnset(object, path) { | |
| 5824 path = castPath(path, object); | |
| 5825 object = parent(object, path); | |
| 5826 return object == null || delete object[toKey(last(path))]; | |
| 5827 } | |
| 5828 | |
| 5829 /** | |
| 5830 * The base implementation of `_.update`. | |
| 5831 * | |
| 5832 * @private | |
| 5833 * @param {Object} object The object to modify. | |
| 5834 * @param {Array|string} path The path of the property to update. | |
| 5835 * @param {Function} updater The function to produce the updated value. | |
| 5836 * @param {Function} [customizer] The function to customize path creation. | |
| 5837 * @returns {Object} Returns `object`. | |
| 5838 */ | |
| 5839 function baseUpdate(object, path, updater, customizer) { | |
| 5840 return baseSet(object, path, updater(baseGet(object, path)), customizer); | |
| 5841 } | |
| 5842 | |
| 5843 /** | |
| 5844 * The base implementation of methods like `_.dropWhile` and `_.takeWhile` | |
| 5845 * without support for iteratee shorthands. | |
| 5846 * | |
| 5847 * @private | |
| 5848 * @param {Array} array The array to query. | |
| 5849 * @param {Function} predicate The function invoked per iteration. | |
| 5850 * @param {boolean} [isDrop] Specify dropping elements instead of taking them. | |
| 5851 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 5852 * @returns {Array} Returns the slice of `array`. | |
| 5853 */ | |
| 5854 function baseWhile(array, predicate, isDrop, fromRight) { | |
| 5855 var length = array.length, | |
| 5856 index = fromRight ? length : -1; | |
| 5857 | |
| 5858 while ((fromRight ? index-- : ++index < length) && | |
| 5859 predicate(array[index], index, array)) {} | |
| 5860 | |
| 5861 return isDrop | |
| 5862 ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length)) | |
| 5863 : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index)); | |
| 5864 } | |
| 5865 | |
| 5866 /** | |
| 5867 * The base implementation of `wrapperValue` which returns the result of | |
| 5868 * performing a sequence of actions on the unwrapped `value`, where each | |
| 5869 * successive action is supplied the return value of the previous. | |
| 5870 * | |
| 5871 * @private | |
| 5872 * @param {*} value The unwrapped value. | |
| 5873 * @param {Array} actions Actions to perform to resolve the unwrapped value. | |
| 5874 * @returns {*} Returns the resolved value. | |
| 5875 */ | |
| 5876 function baseWrapperValue(value, actions) { | |
| 5877 var result = value; | |
| 5878 if (result instanceof LazyWrapper) { | |
| 5879 result = result.value(); | |
| 5880 } | |
| 5881 return arrayReduce(actions, function(result, action) { | |
| 5882 return action.func.apply(action.thisArg, arrayPush([result], action.args)); | |
| 5883 }, result); | |
| 5884 } | |
| 5885 | |
| 5886 /** | |
| 5887 * The base implementation of methods like `_.xor`, without support for | |
| 5888 * iteratee shorthands, that accepts an array of arrays to inspect. | |
| 5889 * | |
| 5890 * @private | |
| 5891 * @param {Array} arrays The arrays to inspect. | |
| 5892 * @param {Function} [iteratee] The iteratee invoked per element. | |
| 5893 * @param {Function} [comparator] The comparator invoked per element. | |
| 5894 * @returns {Array} Returns the new array of values. | |
| 5895 */ | |
| 5896 function baseXor(arrays, iteratee, comparator) { | |
| 5897 var length = arrays.length; | |
| 5898 if (length < 2) { | |
| 5899 return length ? baseUniq(arrays[0]) : []; | |
| 5900 } | |
| 5901 var index = -1, | |
| 5902 result = Array(length); | |
| 5903 | |
| 5904 while (++index < length) { | |
| 5905 var array = arrays[index], | |
| 5906 othIndex = -1; | |
| 5907 | |
| 5908 while (++othIndex < length) { | |
| 5909 if (othIndex != index) { | |
| 5910 result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator); | |
| 5911 } | |
| 5912 } | |
| 5913 } | |
| 5914 return baseUniq(baseFlatten(result, 1), iteratee, comparator); | |
| 5915 } | |
| 5916 | |
| 5917 /** | |
| 5918 * This base implementation of `_.zipObject` which assigns values using `assignFunc`. | |
| 5919 * | |
| 5920 * @private | |
| 5921 * @param {Array} props The property identifiers. | |
| 5922 * @param {Array} values The property values. | |
| 5923 * @param {Function} assignFunc The function to assign values. | |
| 5924 * @returns {Object} Returns the new object. | |
| 5925 */ | |
| 5926 function baseZipObject(props, values, assignFunc) { | |
| 5927 var index = -1, | |
| 5928 length = props.length, | |
| 5929 valsLength = values.length, | |
| 5930 result = {}; | |
| 5931 | |
| 5932 while (++index < length) { | |
| 5933 var value = index < valsLength ? values[index] : undefined; | |
| 5934 assignFunc(result, props[index], value); | |
| 5935 } | |
| 5936 return result; | |
| 5937 } | |
| 5938 | |
| 5939 /** | |
| 5940 * Casts `value` to an empty array if it's not an array like object. | |
| 5941 * | |
| 5942 * @private | |
| 5943 * @param {*} value The value to inspect. | |
| 5944 * @returns {Array|Object} Returns the cast array-like object. | |
| 5945 */ | |
| 5946 function castArrayLikeObject(value) { | |
| 5947 return isArrayLikeObject(value) ? value : []; | |
| 5948 } | |
| 5949 | |
| 5950 /** | |
| 5951 * Casts `value` to `identity` if it's not a function. | |
| 5952 * | |
| 5953 * @private | |
| 5954 * @param {*} value The value to inspect. | |
| 5955 * @returns {Function} Returns cast function. | |
| 5956 */ | |
| 5957 function castFunction(value) { | |
| 5958 return typeof value == 'function' ? value : identity; | |
| 5959 } | |
| 5960 | |
| 5961 /** | |
| 5962 * Casts `value` to a path array if it's not one. | |
| 5963 * | |
| 5964 * @private | |
| 5965 * @param {*} value The value to inspect. | |
| 5966 * @param {Object} [object] The object to query keys on. | |
| 5967 * @returns {Array} Returns the cast property path array. | |
| 5968 */ | |
| 5969 function castPath(value, object) { | |
| 5970 if (isArray(value)) { | |
| 5971 return value; | |
| 5972 } | |
| 5973 return isKey(value, object) ? [value] : stringToPath(toString(value)); | |
| 5974 } | |
| 5975 | |
| 5976 /** | |
| 5977 * A `baseRest` alias which can be replaced with `identity` by module | |
| 5978 * replacement plugins. | |
| 5979 * | |
| 5980 * @private | |
| 5981 * @type {Function} | |
| 5982 * @param {Function} func The function to apply a rest parameter to. | |
| 5983 * @returns {Function} Returns the new function. | |
| 5984 */ | |
| 5985 var castRest = baseRest; | |
| 5986 | |
| 5987 /** | |
| 5988 * Casts `array` to a slice if it's needed. | |
| 5989 * | |
| 5990 * @private | |
| 5991 * @param {Array} array The array to inspect. | |
| 5992 * @param {number} start The start position. | |
| 5993 * @param {number} [end=array.length] The end position. | |
| 5994 * @returns {Array} Returns the cast slice. | |
| 5995 */ | |
| 5996 function castSlice(array, start, end) { | |
| 5997 var length = array.length; | |
| 5998 end = end === undefined ? length : end; | |
| 5999 return (!start && end >= length) ? array : baseSlice(array, start, end); | |
| 6000 } | |
| 6001 | |
| 6002 /** | |
| 6003 * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout). | |
| 6004 * | |
| 6005 * @private | |
| 6006 * @param {number|Object} id The timer id or timeout object of the timer to clear. | |
| 6007 */ | |
| 6008 var clearTimeout = ctxClearTimeout || function(id) { | |
| 6009 return root.clearTimeout(id); | |
| 6010 }; | |
| 6011 | |
| 6012 /** | |
| 6013 * Creates a clone of `buffer`. | |
| 6014 * | |
| 6015 * @private | |
| 6016 * @param {Buffer} buffer The buffer to clone. | |
| 6017 * @param {boolean} [isDeep] Specify a deep clone. | |
| 6018 * @returns {Buffer} Returns the cloned buffer. | |
| 6019 */ | |
| 6020 function cloneBuffer(buffer, isDeep) { | |
| 6021 if (isDeep) { | |
| 6022 return buffer.slice(); | |
| 6023 } | |
| 6024 var length = buffer.length, | |
| 6025 result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length); | |
| 6026 | |
| 6027 buffer.copy(result); | |
| 6028 return result; | |
| 6029 } | |
| 6030 | |
| 6031 /** | |
| 6032 * Creates a clone of `arrayBuffer`. | |
| 6033 * | |
| 6034 * @private | |
| 6035 * @param {ArrayBuffer} arrayBuffer The array buffer to clone. | |
| 6036 * @returns {ArrayBuffer} Returns the cloned array buffer. | |
| 6037 */ | |
| 6038 function cloneArrayBuffer(arrayBuffer) { | |
| 6039 var result = new arrayBuffer.constructor(arrayBuffer.byteLength); | |
| 6040 new Uint8Array(result).set(new Uint8Array(arrayBuffer)); | |
| 6041 return result; | |
| 6042 } | |
| 6043 | |
| 6044 /** | |
| 6045 * Creates a clone of `dataView`. | |
| 6046 * | |
| 6047 * @private | |
| 6048 * @param {Object} dataView The data view to clone. | |
| 6049 * @param {boolean} [isDeep] Specify a deep clone. | |
| 6050 * @returns {Object} Returns the cloned data view. | |
| 6051 */ | |
| 6052 function cloneDataView(dataView, isDeep) { | |
| 6053 var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer; | |
| 6054 return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength); | |
| 6055 } | |
| 6056 | |
| 6057 /** | |
| 6058 * Creates a clone of `regexp`. | |
| 6059 * | |
| 6060 * @private | |
| 6061 * @param {Object} regexp The regexp to clone. | |
| 6062 * @returns {Object} Returns the cloned regexp. | |
| 6063 */ | |
| 6064 function cloneRegExp(regexp) { | |
| 6065 var result = new regexp.constructor(regexp.source, reFlags.exec(regexp)); | |
| 6066 result.lastIndex = regexp.lastIndex; | |
| 6067 return result; | |
| 6068 } | |
| 6069 | |
| 6070 /** | |
| 6071 * Creates a clone of the `symbol` object. | |
| 6072 * | |
| 6073 * @private | |
| 6074 * @param {Object} symbol The symbol object to clone. | |
| 6075 * @returns {Object} Returns the cloned symbol object. | |
| 6076 */ | |
| 6077 function cloneSymbol(symbol) { | |
| 6078 return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {}; | |
| 6079 } | |
| 6080 | |
| 6081 /** | |
| 6082 * Creates a clone of `typedArray`. | |
| 6083 * | |
| 6084 * @private | |
| 6085 * @param {Object} typedArray The typed array to clone. | |
| 6086 * @param {boolean} [isDeep] Specify a deep clone. | |
| 6087 * @returns {Object} Returns the cloned typed array. | |
| 6088 */ | |
| 6089 function cloneTypedArray(typedArray, isDeep) { | |
| 6090 var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer; | |
| 6091 return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length); | |
| 6092 } | |
| 6093 | |
| 6094 /** | |
| 6095 * Compares values to sort them in ascending order. | |
| 6096 * | |
| 6097 * @private | |
| 6098 * @param {*} value The value to compare. | |
| 6099 * @param {*} other The other value to compare. | |
| 6100 * @returns {number} Returns the sort order indicator for `value`. | |
| 6101 */ | |
| 6102 function compareAscending(value, other) { | |
| 6103 if (value !== other) { | |
| 6104 var valIsDefined = value !== undefined, | |
| 6105 valIsNull = value === null, | |
| 6106 valIsReflexive = value === value, | |
| 6107 valIsSymbol = isSymbol(value); | |
| 6108 | |
| 6109 var othIsDefined = other !== undefined, | |
| 6110 othIsNull = other === null, | |
| 6111 othIsReflexive = other === other, | |
| 6112 othIsSymbol = isSymbol(other); | |
| 6113 | |
| 6114 if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) || | |
| 6115 (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) || | |
| 6116 (valIsNull && othIsDefined && othIsReflexive) || | |
| 6117 (!valIsDefined && othIsReflexive) || | |
| 6118 !valIsReflexive) { | |
| 6119 return 1; | |
| 6120 } | |
| 6121 if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) || | |
| 6122 (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) || | |
| 6123 (othIsNull && valIsDefined && valIsReflexive) || | |
| 6124 (!othIsDefined && valIsReflexive) || | |
| 6125 !othIsReflexive) { | |
| 6126 return -1; | |
| 6127 } | |
| 6128 } | |
| 6129 return 0; | |
| 6130 } | |
| 6131 | |
| 6132 /** | |
| 6133 * Used by `_.orderBy` to compare multiple properties of a value to another | |
| 6134 * and stable sort them. | |
| 6135 * | |
| 6136 * If `orders` is unspecified, all values are sorted in ascending order. Otherwise, | |
| 6137 * specify an order of "desc" for descending or "asc" for ascending sort order | |
| 6138 * of corresponding values. | |
| 6139 * | |
| 6140 * @private | |
| 6141 * @param {Object} object The object to compare. | |
| 6142 * @param {Object} other The other object to compare. | |
| 6143 * @param {boolean[]|string[]} orders The order to sort by for each property. | |
| 6144 * @returns {number} Returns the sort order indicator for `object`. | |
| 6145 */ | |
| 6146 function compareMultiple(object, other, orders) { | |
| 6147 var index = -1, | |
| 6148 objCriteria = object.criteria, | |
| 6149 othCriteria = other.criteria, | |
| 6150 length = objCriteria.length, | |
| 6151 ordersLength = orders.length; | |
| 6152 | |
| 6153 while (++index < length) { | |
| 6154 var result = compareAscending(objCriteria[index], othCriteria[index]); | |
| 6155 if (result) { | |
| 6156 if (index >= ordersLength) { | |
| 6157 return result; | |
| 6158 } | |
| 6159 var order = orders[index]; | |
| 6160 return result * (order == 'desc' ? -1 : 1); | |
| 6161 } | |
| 6162 } | |
| 6163 // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications | |
| 6164 // that causes it, under certain circumstances, to provide the same value for | |
| 6165 // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247 | |
| 6166 // for more details. | |
| 6167 // | |
| 6168 // This also ensures a stable sort in V8 and other engines. | |
| 6169 // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details. | |
| 6170 return object.index - other.index; | |
| 6171 } | |
| 6172 | |
| 6173 /** | |
| 6174 * Creates an array that is the composition of partially applied arguments, | |
| 6175 * placeholders, and provided arguments into a single array of arguments. | |
| 6176 * | |
| 6177 * @private | |
| 6178 * @param {Array} args The provided arguments. | |
| 6179 * @param {Array} partials The arguments to prepend to those provided. | |
| 6180 * @param {Array} holders The `partials` placeholder indexes. | |
| 6181 * @params {boolean} [isCurried] Specify composing for a curried function. | |
| 6182 * @returns {Array} Returns the new array of composed arguments. | |
| 6183 */ | |
| 6184 function composeArgs(args, partials, holders, isCurried) { | |
| 6185 var argsIndex = -1, | |
| 6186 argsLength = args.length, | |
| 6187 holdersLength = holders.length, | |
| 6188 leftIndex = -1, | |
| 6189 leftLength = partials.length, | |
| 6190 rangeLength = nativeMax(argsLength - holdersLength, 0), | |
| 6191 result = Array(leftLength + rangeLength), | |
| 6192 isUncurried = !isCurried; | |
| 6193 | |
| 6194 while (++leftIndex < leftLength) { | |
| 6195 result[leftIndex] = partials[leftIndex]; | |
| 6196 } | |
| 6197 while (++argsIndex < holdersLength) { | |
| 6198 if (isUncurried || argsIndex < argsLength) { | |
| 6199 result[holders[argsIndex]] = args[argsIndex]; | |
| 6200 } | |
| 6201 } | |
| 6202 while (rangeLength--) { | |
| 6203 result[leftIndex++] = args[argsIndex++]; | |
| 6204 } | |
| 6205 return result; | |
| 6206 } | |
| 6207 | |
| 6208 /** | |
| 6209 * This function is like `composeArgs` except that the arguments composition | |
| 6210 * is tailored for `_.partialRight`. | |
| 6211 * | |
| 6212 * @private | |
| 6213 * @param {Array} args The provided arguments. | |
| 6214 * @param {Array} partials The arguments to append to those provided. | |
| 6215 * @param {Array} holders The `partials` placeholder indexes. | |
| 6216 * @params {boolean} [isCurried] Specify composing for a curried function. | |
| 6217 * @returns {Array} Returns the new array of composed arguments. | |
| 6218 */ | |
| 6219 function composeArgsRight(args, partials, holders, isCurried) { | |
| 6220 var argsIndex = -1, | |
| 6221 argsLength = args.length, | |
| 6222 holdersIndex = -1, | |
| 6223 holdersLength = holders.length, | |
| 6224 rightIndex = -1, | |
| 6225 rightLength = partials.length, | |
| 6226 rangeLength = nativeMax(argsLength - holdersLength, 0), | |
| 6227 result = Array(rangeLength + rightLength), | |
| 6228 isUncurried = !isCurried; | |
| 6229 | |
| 6230 while (++argsIndex < rangeLength) { | |
| 6231 result[argsIndex] = args[argsIndex]; | |
| 6232 } | |
| 6233 var offset = argsIndex; | |
| 6234 while (++rightIndex < rightLength) { | |
| 6235 result[offset + rightIndex] = partials[rightIndex]; | |
| 6236 } | |
| 6237 while (++holdersIndex < holdersLength) { | |
| 6238 if (isUncurried || argsIndex < argsLength) { | |
| 6239 result[offset + holders[holdersIndex]] = args[argsIndex++]; | |
| 6240 } | |
| 6241 } | |
| 6242 return result; | |
| 6243 } | |
| 6244 | |
| 6245 /** | |
| 6246 * Copies the values of `source` to `array`. | |
| 6247 * | |
| 6248 * @private | |
| 6249 * @param {Array} source The array to copy values from. | |
| 6250 * @param {Array} [array=[]] The array to copy values to. | |
| 6251 * @returns {Array} Returns `array`. | |
| 6252 */ | |
| 6253 function copyArray(source, array) { | |
| 6254 var index = -1, | |
| 6255 length = source.length; | |
| 6256 | |
| 6257 array || (array = Array(length)); | |
| 6258 while (++index < length) { | |
| 6259 array[index] = source[index]; | |
| 6260 } | |
| 6261 return array; | |
| 6262 } | |
| 6263 | |
| 6264 /** | |
| 6265 * Copies properties of `source` to `object`. | |
| 6266 * | |
| 6267 * @private | |
| 6268 * @param {Object} source The object to copy properties from. | |
| 6269 * @param {Array} props The property identifiers to copy. | |
| 6270 * @param {Object} [object={}] The object to copy properties to. | |
| 6271 * @param {Function} [customizer] The function to customize copied values. | |
| 6272 * @returns {Object} Returns `object`. | |
| 6273 */ | |
| 6274 function copyObject(source, props, object, customizer) { | |
| 6275 var isNew = !object; | |
| 6276 object || (object = {}); | |
| 6277 | |
| 6278 var index = -1, | |
| 6279 length = props.length; | |
| 6280 | |
| 6281 while (++index < length) { | |
| 6282 var key = props[index]; | |
| 6283 | |
| 6284 var newValue = customizer | |
| 6285 ? customizer(object[key], source[key], key, object, source) | |
| 6286 : undefined; | |
| 6287 | |
| 6288 if (newValue === undefined) { | |
| 6289 newValue = source[key]; | |
| 6290 } | |
| 6291 if (isNew) { | |
| 6292 baseAssignValue(object, key, newValue); | |
| 6293 } else { | |
| 6294 assignValue(object, key, newValue); | |
| 6295 } | |
| 6296 } | |
| 6297 return object; | |
| 6298 } | |
| 6299 | |
| 6300 /** | |
| 6301 * Copies own symbols of `source` to `object`. | |
| 6302 * | |
| 6303 * @private | |
| 6304 * @param {Object} source The object to copy symbols from. | |
| 6305 * @param {Object} [object={}] The object to copy symbols to. | |
| 6306 * @returns {Object} Returns `object`. | |
| 6307 */ | |
| 6308 function copySymbols(source, object) { | |
| 6309 return copyObject(source, getSymbols(source), object); | |
| 6310 } | |
| 6311 | |
| 6312 /** | |
| 6313 * Copies own and inherited symbols of `source` to `object`. | |
| 6314 * | |
| 6315 * @private | |
| 6316 * @param {Object} source The object to copy symbols from. | |
| 6317 * @param {Object} [object={}] The object to copy symbols to. | |
| 6318 * @returns {Object} Returns `object`. | |
| 6319 */ | |
| 6320 function copySymbolsIn(source, object) { | |
| 6321 return copyObject(source, getSymbolsIn(source), object); | |
| 6322 } | |
| 6323 | |
| 6324 /** | |
| 6325 * Creates a function like `_.groupBy`. | |
| 6326 * | |
| 6327 * @private | |
| 6328 * @param {Function} setter The function to set accumulator values. | |
| 6329 * @param {Function} [initializer] The accumulator object initializer. | |
| 6330 * @returns {Function} Returns the new aggregator function. | |
| 6331 */ | |
| 6332 function createAggregator(setter, initializer) { | |
| 6333 return function(collection, iteratee) { | |
| 6334 var func = isArray(collection) ? arrayAggregator : baseAggregator, | |
| 6335 accumulator = initializer ? initializer() : {}; | |
| 6336 | |
| 6337 return func(collection, setter, getIteratee(iteratee, 2), accumulator); | |
| 6338 }; | |
| 6339 } | |
| 6340 | |
| 6341 /** | |
| 6342 * Creates a function like `_.assign`. | |
| 6343 * | |
| 6344 * @private | |
| 6345 * @param {Function} assigner The function to assign values. | |
| 6346 * @returns {Function} Returns the new assigner function. | |
| 6347 */ | |
| 6348 function createAssigner(assigner) { | |
| 6349 return baseRest(function(object, sources) { | |
| 6350 var index = -1, | |
| 6351 length = sources.length, | |
| 6352 customizer = length > 1 ? sources[length - 1] : undefined, | |
| 6353 guard = length > 2 ? sources[2] : undefined; | |
| 6354 | |
| 6355 customizer = (assigner.length > 3 && typeof customizer == 'function') | |
| 6356 ? (length--, customizer) | |
| 6357 : undefined; | |
| 6358 | |
| 6359 if (guard && isIterateeCall(sources[0], sources[1], guard)) { | |
| 6360 customizer = length < 3 ? undefined : customizer; | |
| 6361 length = 1; | |
| 6362 } | |
| 6363 object = Object(object); | |
| 6364 while (++index < length) { | |
| 6365 var source = sources[index]; | |
| 6366 if (source) { | |
| 6367 assigner(object, source, index, customizer); | |
| 6368 } | |
| 6369 } | |
| 6370 return object; | |
| 6371 }); | |
| 6372 } | |
| 6373 | |
| 6374 /** | |
| 6375 * Creates a `baseEach` or `baseEachRight` function. | |
| 6376 * | |
| 6377 * @private | |
| 6378 * @param {Function} eachFunc The function to iterate over a collection. | |
| 6379 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 6380 * @returns {Function} Returns the new base function. | |
| 6381 */ | |
| 6382 function createBaseEach(eachFunc, fromRight) { | |
| 6383 return function(collection, iteratee) { | |
| 6384 if (collection == null) { | |
| 6385 return collection; | |
| 6386 } | |
| 6387 if (!isArrayLike(collection)) { | |
| 6388 return eachFunc(collection, iteratee); | |
| 6389 } | |
| 6390 var length = collection.length, | |
| 6391 index = fromRight ? length : -1, | |
| 6392 iterable = Object(collection); | |
| 6393 | |
| 6394 while ((fromRight ? index-- : ++index < length)) { | |
| 6395 if (iteratee(iterable[index], index, iterable) === false) { | |
| 6396 break; | |
| 6397 } | |
| 6398 } | |
| 6399 return collection; | |
| 6400 }; | |
| 6401 } | |
| 6402 | |
| 6403 /** | |
| 6404 * Creates a base function for methods like `_.forIn` and `_.forOwn`. | |
| 6405 * | |
| 6406 * @private | |
| 6407 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 6408 * @returns {Function} Returns the new base function. | |
| 6409 */ | |
| 6410 function createBaseFor(fromRight) { | |
| 6411 return function(object, iteratee, keysFunc) { | |
| 6412 var index = -1, | |
| 6413 iterable = Object(object), | |
| 6414 props = keysFunc(object), | |
| 6415 length = props.length; | |
| 6416 | |
| 6417 while (length--) { | |
| 6418 var key = props[fromRight ? length : ++index]; | |
| 6419 if (iteratee(iterable[key], key, iterable) === false) { | |
| 6420 break; | |
| 6421 } | |
| 6422 } | |
| 6423 return object; | |
| 6424 }; | |
| 6425 } | |
| 6426 | |
| 6427 /** | |
| 6428 * Creates a function that wraps `func` to invoke it with the optional `this` | |
| 6429 * binding of `thisArg`. | |
| 6430 * | |
| 6431 * @private | |
| 6432 * @param {Function} func The function to wrap. | |
| 6433 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. | |
| 6434 * @param {*} [thisArg] The `this` binding of `func`. | |
| 6435 * @returns {Function} Returns the new wrapped function. | |
| 6436 */ | |
| 6437 function createBind(func, bitmask, thisArg) { | |
| 6438 var isBind = bitmask & WRAP_BIND_FLAG, | |
| 6439 Ctor = createCtor(func); | |
| 6440 | |
| 6441 function wrapper() { | |
| 6442 var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; | |
| 6443 return fn.apply(isBind ? thisArg : this, arguments); | |
| 6444 } | |
| 6445 return wrapper; | |
| 6446 } | |
| 6447 | |
| 6448 /** | |
| 6449 * Creates a function like `_.lowerFirst`. | |
| 6450 * | |
| 6451 * @private | |
| 6452 * @param {string} methodName The name of the `String` case method to use. | |
| 6453 * @returns {Function} Returns the new case function. | |
| 6454 */ | |
| 6455 function createCaseFirst(methodName) { | |
| 6456 return function(string) { | |
| 6457 string = toString(string); | |
| 6458 | |
| 6459 var strSymbols = hasUnicode(string) | |
| 6460 ? stringToArray(string) | |
| 6461 : undefined; | |
| 6462 | |
| 6463 var chr = strSymbols | |
| 6464 ? strSymbols[0] | |
| 6465 : string.charAt(0); | |
| 6466 | |
| 6467 var trailing = strSymbols | |
| 6468 ? castSlice(strSymbols, 1).join('') | |
| 6469 : string.slice(1); | |
| 6470 | |
| 6471 return chr[methodName]() + trailing; | |
| 6472 }; | |
| 6473 } | |
| 6474 | |
| 6475 /** | |
| 6476 * Creates a function like `_.camelCase`. | |
| 6477 * | |
| 6478 * @private | |
| 6479 * @param {Function} callback The function to combine each word. | |
| 6480 * @returns {Function} Returns the new compounder function. | |
| 6481 */ | |
| 6482 function createCompounder(callback) { | |
| 6483 return function(string) { | |
| 6484 return arrayReduce(words(deburr(string).replace(reApos, '')), callback, ''); | |
| 6485 }; | |
| 6486 } | |
| 6487 | |
| 6488 /** | |
| 6489 * Creates a function that produces an instance of `Ctor` regardless of | |
| 6490 * whether it was invoked as part of a `new` expression or by `call` or `apply`. | |
| 6491 * | |
| 6492 * @private | |
| 6493 * @param {Function} Ctor The constructor to wrap. | |
| 6494 * @returns {Function} Returns the new wrapped function. | |
| 6495 */ | |
| 6496 function createCtor(Ctor) { | |
| 6497 return function() { | |
| 6498 // Use a `switch` statement to work with class constructors. See | |
| 6499 // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist | |
| 6500 // for more details. | |
| 6501 var args = arguments; | |
| 6502 switch (args.length) { | |
| 6503 case 0: return new Ctor; | |
| 6504 case 1: return new Ctor(args[0]); | |
| 6505 case 2: return new Ctor(args[0], args[1]); | |
| 6506 case 3: return new Ctor(args[0], args[1], args[2]); | |
| 6507 case 4: return new Ctor(args[0], args[1], args[2], args[3]); | |
| 6508 case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]); | |
| 6509 case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]); | |
| 6510 case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]); | |
| 6511 } | |
| 6512 var thisBinding = baseCreate(Ctor.prototype), | |
| 6513 result = Ctor.apply(thisBinding, args); | |
| 6514 | |
| 6515 // Mimic the constructor's `return` behavior. | |
| 6516 // See https://es5.github.io/#x13.2.2 for more details. | |
| 6517 return isObject(result) ? result : thisBinding; | |
| 6518 }; | |
| 6519 } | |
| 6520 | |
| 6521 /** | |
| 6522 * Creates a function that wraps `func` to enable currying. | |
| 6523 * | |
| 6524 * @private | |
| 6525 * @param {Function} func The function to wrap. | |
| 6526 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. | |
| 6527 * @param {number} arity The arity of `func`. | |
| 6528 * @returns {Function} Returns the new wrapped function. | |
| 6529 */ | |
| 6530 function createCurry(func, bitmask, arity) { | |
| 6531 var Ctor = createCtor(func); | |
| 6532 | |
| 6533 function wrapper() { | |
| 6534 var length = arguments.length, | |
| 6535 args = Array(length), | |
| 6536 index = length, | |
| 6537 placeholder = getHolder(wrapper); | |
| 6538 | |
| 6539 while (index--) { | |
| 6540 args[index] = arguments[index]; | |
| 6541 } | |
| 6542 var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder) | |
| 6543 ? [] | |
| 6544 : replaceHolders(args, placeholder); | |
| 6545 | |
| 6546 length -= holders.length; | |
| 6547 if (length < arity) { | |
| 6548 return createRecurry( | |
| 6549 func, bitmask, createHybrid, wrapper.placeholder, undefined, | |
| 6550 args, holders, undefined, undefined, arity - length); | |
| 6551 } | |
| 6552 var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; | |
| 6553 return apply(fn, this, args); | |
| 6554 } | |
| 6555 return wrapper; | |
| 6556 } | |
| 6557 | |
| 6558 /** | |
| 6559 * Creates a `_.find` or `_.findLast` function. | |
| 6560 * | |
| 6561 * @private | |
| 6562 * @param {Function} findIndexFunc The function to find the collection index. | |
| 6563 * @returns {Function} Returns the new find function. | |
| 6564 */ | |
| 6565 function createFind(findIndexFunc) { | |
| 6566 return function(collection, predicate, fromIndex) { | |
| 6567 var iterable = Object(collection); | |
| 6568 if (!isArrayLike(collection)) { | |
| 6569 var iteratee = getIteratee(predicate, 3); | |
| 6570 collection = keys(collection); | |
| 6571 predicate = function(key) { return iteratee(iterable[key], key, iterable); }; | |
| 6572 } | |
| 6573 var index = findIndexFunc(collection, predicate, fromIndex); | |
| 6574 return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined; | |
| 6575 }; | |
| 6576 } | |
| 6577 | |
| 6578 /** | |
| 6579 * Creates a `_.flow` or `_.flowRight` function. | |
| 6580 * | |
| 6581 * @private | |
| 6582 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 6583 * @returns {Function} Returns the new flow function. | |
| 6584 */ | |
| 6585 function createFlow(fromRight) { | |
| 6586 return flatRest(function(funcs) { | |
| 6587 var length = funcs.length, | |
| 6588 index = length, | |
| 6589 prereq = LodashWrapper.prototype.thru; | |
| 6590 | |
| 6591 if (fromRight) { | |
| 6592 funcs.reverse(); | |
| 6593 } | |
| 6594 while (index--) { | |
| 6595 var func = funcs[index]; | |
| 6596 if (typeof func != 'function') { | |
| 6597 throw new TypeError(FUNC_ERROR_TEXT); | |
| 6598 } | |
| 6599 if (prereq && !wrapper && getFuncName(func) == 'wrapper') { | |
| 6600 var wrapper = new LodashWrapper([], true); | |
| 6601 } | |
| 6602 } | |
| 6603 index = wrapper ? index : length; | |
| 6604 while (++index < length) { | |
| 6605 func = funcs[index]; | |
| 6606 | |
| 6607 var funcName = getFuncName(func), | |
| 6608 data = funcName == 'wrapper' ? getData(func) : undefined; | |
| 6609 | |
| 6610 if (data && isLaziable(data[0]) && | |
| 6611 data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && | |
| 6612 !data[4].length && data[9] == 1 | |
| 6613 ) { | |
| 6614 wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]); | |
| 6615 } else { | |
| 6616 wrapper = (func.length == 1 && isLaziable(func)) | |
| 6617 ? wrapper[funcName]() | |
| 6618 : wrapper.thru(func); | |
| 6619 } | |
| 6620 } | |
| 6621 return function() { | |
| 6622 var args = arguments, | |
| 6623 value = args[0]; | |
| 6624 | |
| 6625 if (wrapper && args.length == 1 && isArray(value)) { | |
| 6626 return wrapper.plant(value).value(); | |
| 6627 } | |
| 6628 var index = 0, | |
| 6629 result = length ? funcs[index].apply(this, args) : value; | |
| 6630 | |
| 6631 while (++index < length) { | |
| 6632 result = funcs[index].call(this, result); | |
| 6633 } | |
| 6634 return result; | |
| 6635 }; | |
| 6636 }); | |
| 6637 } | |
| 6638 | |
| 6639 /** | |
| 6640 * Creates a function that wraps `func` to invoke it with optional `this` | |
| 6641 * binding of `thisArg`, partial application, and currying. | |
| 6642 * | |
| 6643 * @private | |
| 6644 * @param {Function|string} func The function or method name to wrap. | |
| 6645 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. | |
| 6646 * @param {*} [thisArg] The `this` binding of `func`. | |
| 6647 * @param {Array} [partials] The arguments to prepend to those provided to | |
| 6648 * the new function. | |
| 6649 * @param {Array} [holders] The `partials` placeholder indexes. | |
| 6650 * @param {Array} [partialsRight] The arguments to append to those provided | |
| 6651 * to the new function. | |
| 6652 * @param {Array} [holdersRight] The `partialsRight` placeholder indexes. | |
| 6653 * @param {Array} [argPos] The argument positions of the new function. | |
| 6654 * @param {number} [ary] The arity cap of `func`. | |
| 6655 * @param {number} [arity] The arity of `func`. | |
| 6656 * @returns {Function} Returns the new wrapped function. | |
| 6657 */ | |
| 6658 function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) { | |
| 6659 var isAry = bitmask & WRAP_ARY_FLAG, | |
| 6660 isBind = bitmask & WRAP_BIND_FLAG, | |
| 6661 isBindKey = bitmask & WRAP_BIND_KEY_FLAG, | |
| 6662 isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG), | |
| 6663 isFlip = bitmask & WRAP_FLIP_FLAG, | |
| 6664 Ctor = isBindKey ? undefined : createCtor(func); | |
| 6665 | |
| 6666 function wrapper() { | |
| 6667 var length = arguments.length, | |
| 6668 args = Array(length), | |
| 6669 index = length; | |
| 6670 | |
| 6671 while (index--) { | |
| 6672 args[index] = arguments[index]; | |
| 6673 } | |
| 6674 if (isCurried) { | |
| 6675 var placeholder = getHolder(wrapper), | |
| 6676 holdersCount = countHolders(args, placeholder); | |
| 6677 } | |
| 6678 if (partials) { | |
| 6679 args = composeArgs(args, partials, holders, isCurried); | |
| 6680 } | |
| 6681 if (partialsRight) { | |
| 6682 args = composeArgsRight(args, partialsRight, holdersRight, isCurried); | |
| 6683 } | |
| 6684 length -= holdersCount; | |
| 6685 if (isCurried && length < arity) { | |
| 6686 var newHolders = replaceHolders(args, placeholder); | |
| 6687 return createRecurry( | |
| 6688 func, bitmask, createHybrid, wrapper.placeholder, thisArg, | |
| 6689 args, newHolders, argPos, ary, arity - length | |
| 6690 ); | |
| 6691 } | |
| 6692 var thisBinding = isBind ? thisArg : this, | |
| 6693 fn = isBindKey ? thisBinding[func] : func; | |
| 6694 | |
| 6695 length = args.length; | |
| 6696 if (argPos) { | |
| 6697 args = reorder(args, argPos); | |
| 6698 } else if (isFlip && length > 1) { | |
| 6699 args.reverse(); | |
| 6700 } | |
| 6701 if (isAry && ary < length) { | |
| 6702 args.length = ary; | |
| 6703 } | |
| 6704 if (this && this !== root && this instanceof wrapper) { | |
| 6705 fn = Ctor || createCtor(fn); | |
| 6706 } | |
| 6707 return fn.apply(thisBinding, args); | |
| 6708 } | |
| 6709 return wrapper; | |
| 6710 } | |
| 6711 | |
| 6712 /** | |
| 6713 * Creates a function like `_.invertBy`. | |
| 6714 * | |
| 6715 * @private | |
| 6716 * @param {Function} setter The function to set accumulator values. | |
| 6717 * @param {Function} toIteratee The function to resolve iteratees. | |
| 6718 * @returns {Function} Returns the new inverter function. | |
| 6719 */ | |
| 6720 function createInverter(setter, toIteratee) { | |
| 6721 return function(object, iteratee) { | |
| 6722 return baseInverter(object, setter, toIteratee(iteratee), {}); | |
| 6723 }; | |
| 6724 } | |
| 6725 | |
| 6726 /** | |
| 6727 * Creates a function that performs a mathematical operation on two values. | |
| 6728 * | |
| 6729 * @private | |
| 6730 * @param {Function} operator The function to perform the operation. | |
| 6731 * @param {number} [defaultValue] The value used for `undefined` arguments. | |
| 6732 * @returns {Function} Returns the new mathematical operation function. | |
| 6733 */ | |
| 6734 function createMathOperation(operator, defaultValue) { | |
| 6735 return function(value, other) { | |
| 6736 var result; | |
| 6737 if (value === undefined && other === undefined) { | |
| 6738 return defaultValue; | |
| 6739 } | |
| 6740 if (value !== undefined) { | |
| 6741 result = value; | |
| 6742 } | |
| 6743 if (other !== undefined) { | |
| 6744 if (result === undefined) { | |
| 6745 return other; | |
| 6746 } | |
| 6747 if (typeof value == 'string' || typeof other == 'string') { | |
| 6748 value = baseToString(value); | |
| 6749 other = baseToString(other); | |
| 6750 } else { | |
| 6751 value = baseToNumber(value); | |
| 6752 other = baseToNumber(other); | |
| 6753 } | |
| 6754 result = operator(value, other); | |
| 6755 } | |
| 6756 return result; | |
| 6757 }; | |
| 6758 } | |
| 6759 | |
| 6760 /** | |
| 6761 * Creates a function like `_.over`. | |
| 6762 * | |
| 6763 * @private | |
| 6764 * @param {Function} arrayFunc The function to iterate over iteratees. | |
| 6765 * @returns {Function} Returns the new over function. | |
| 6766 */ | |
| 6767 function createOver(arrayFunc) { | |
| 6768 return flatRest(function(iteratees) { | |
| 6769 iteratees = arrayMap(iteratees, baseUnary(getIteratee())); | |
| 6770 return baseRest(function(args) { | |
| 6771 var thisArg = this; | |
| 6772 return arrayFunc(iteratees, function(iteratee) { | |
| 6773 return apply(iteratee, thisArg, args); | |
| 6774 }); | |
| 6775 }); | |
| 6776 }); | |
| 6777 } | |
| 6778 | |
| 6779 /** | |
| 6780 * Creates the padding for `string` based on `length`. The `chars` string | |
| 6781 * is truncated if the number of characters exceeds `length`. | |
| 6782 * | |
| 6783 * @private | |
| 6784 * @param {number} length The padding length. | |
| 6785 * @param {string} [chars=' '] The string used as padding. | |
| 6786 * @returns {string} Returns the padding for `string`. | |
| 6787 */ | |
| 6788 function createPadding(length, chars) { | |
| 6789 chars = chars === undefined ? ' ' : baseToString(chars); | |
| 6790 | |
| 6791 var charsLength = chars.length; | |
| 6792 if (charsLength < 2) { | |
| 6793 return charsLength ? baseRepeat(chars, length) : chars; | |
| 6794 } | |
| 6795 var result = baseRepeat(chars, nativeCeil(length / stringSize(chars))); | |
| 6796 return hasUnicode(chars) | |
| 6797 ? castSlice(stringToArray(result), 0, length).join('') | |
| 6798 : result.slice(0, length); | |
| 6799 } | |
| 6800 | |
| 6801 /** | |
| 6802 * Creates a function that wraps `func` to invoke it with the `this` binding | |
| 6803 * of `thisArg` and `partials` prepended to the arguments it receives. | |
| 6804 * | |
| 6805 * @private | |
| 6806 * @param {Function} func The function to wrap. | |
| 6807 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. | |
| 6808 * @param {*} thisArg The `this` binding of `func`. | |
| 6809 * @param {Array} partials The arguments to prepend to those provided to | |
| 6810 * the new function. | |
| 6811 * @returns {Function} Returns the new wrapped function. | |
| 6812 */ | |
| 6813 function createPartial(func, bitmask, thisArg, partials) { | |
| 6814 var isBind = bitmask & WRAP_BIND_FLAG, | |
| 6815 Ctor = createCtor(func); | |
| 6816 | |
| 6817 function wrapper() { | |
| 6818 var argsIndex = -1, | |
| 6819 argsLength = arguments.length, | |
| 6820 leftIndex = -1, | |
| 6821 leftLength = partials.length, | |
| 6822 args = Array(leftLength + argsLength), | |
| 6823 fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; | |
| 6824 | |
| 6825 while (++leftIndex < leftLength) { | |
| 6826 args[leftIndex] = partials[leftIndex]; | |
| 6827 } | |
| 6828 while (argsLength--) { | |
| 6829 args[leftIndex++] = arguments[++argsIndex]; | |
| 6830 } | |
| 6831 return apply(fn, isBind ? thisArg : this, args); | |
| 6832 } | |
| 6833 return wrapper; | |
| 6834 } | |
| 6835 | |
| 6836 /** | |
| 6837 * Creates a `_.range` or `_.rangeRight` function. | |
| 6838 * | |
| 6839 * @private | |
| 6840 * @param {boolean} [fromRight] Specify iterating from right to left. | |
| 6841 * @returns {Function} Returns the new range function. | |
| 6842 */ | |
| 6843 function createRange(fromRight) { | |
| 6844 return function(start, end, step) { | |
| 6845 if (step && typeof step != 'number' && isIterateeCall(start, end, step)) { | |
| 6846 end = step = undefined; | |
| 6847 } | |
| 6848 // Ensure the sign of `-0` is preserved. | |
| 6849 start = toFinite(start); | |
| 6850 if (end === undefined) { | |
| 6851 end = start; | |
| 6852 start = 0; | |
| 6853 } else { | |
| 6854 end = toFinite(end); | |
| 6855 } | |
| 6856 step = step === undefined ? (start < end ? 1 : -1) : toFinite(step); | |
| 6857 return baseRange(start, end, step, fromRight); | |
| 6858 }; | |
| 6859 } | |
| 6860 | |
| 6861 /** | |
| 6862 * Creates a function that performs a relational operation on two values. | |
| 6863 * | |
| 6864 * @private | |
| 6865 * @param {Function} operator The function to perform the operation. | |
| 6866 * @returns {Function} Returns the new relational operation function. | |
| 6867 */ | |
| 6868 function createRelationalOperation(operator) { | |
| 6869 return function(value, other) { | |
| 6870 if (!(typeof value == 'string' && typeof other == 'string')) { | |
| 6871 value = toNumber(value); | |
| 6872 other = toNumber(other); | |
| 6873 } | |
| 6874 return operator(value, other); | |
| 6875 }; | |
| 6876 } | |
| 6877 | |
| 6878 /** | |
| 6879 * Creates a function that wraps `func` to continue currying. | |
| 6880 * | |
| 6881 * @private | |
| 6882 * @param {Function} func The function to wrap. | |
| 6883 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. | |
| 6884 * @param {Function} wrapFunc The function to create the `func` wrapper. | |
| 6885 * @param {*} placeholder The placeholder value. | |
| 6886 * @param {*} [thisArg] The `this` binding of `func`. | |
| 6887 * @param {Array} [partials] The arguments to prepend to those provided to | |
| 6888 * the new function. | |
| 6889 * @param {Array} [holders] The `partials` placeholder indexes. | |
| 6890 * @param {Array} [argPos] The argument positions of the new function. | |
| 6891 * @param {number} [ary] The arity cap of `func`. | |
| 6892 * @param {number} [arity] The arity of `func`. | |
| 6893 * @returns {Function} Returns the new wrapped function. | |
| 6894 */ | |
| 6895 function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) { | |
| 6896 var isCurry = bitmask & WRAP_CURRY_FLAG, | |
| 6897 newHolders = isCurry ? holders : undefined, | |
| 6898 newHoldersRight = isCurry ? undefined : holders, | |
| 6899 newPartials = isCurry ? partials : undefined, | |
| 6900 newPartialsRight = isCurry ? undefined : partials; | |
| 6901 | |
| 6902 bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG); | |
| 6903 bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG); | |
| 6904 | |
| 6905 if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) { | |
| 6906 bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG); | |
| 6907 } | |
| 6908 var newData = [ | |
| 6909 func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, | |
| 6910 newHoldersRight, argPos, ary, arity | |
| 6911 ]; | |
| 6912 | |
| 6913 var result = wrapFunc.apply(undefined, newData); | |
| 6914 if (isLaziable(func)) { | |
| 6915 setData(result, newData); | |
| 6916 } | |
| 6917 result.placeholder = placeholder; | |
| 6918 return setWrapToString(result, func, bitmask); | |
| 6919 } | |
| 6920 | |
| 6921 /** | |
| 6922 * Creates a function like `_.round`. | |
| 6923 * | |
| 6924 * @private | |
| 6925 * @param {string} methodName The name of the `Math` method to use when rounding. | |
| 6926 * @returns {Function} Returns the new round function. | |
| 6927 */ | |
| 6928 function createRound(methodName) { | |
| 6929 var func = Math[methodName]; | |
| 6930 return function(number, precision) { | |
| 6931 number = toNumber(number); | |
| 6932 precision = precision == null ? 0 : nativeMin(toInteger(precision), 292); | |
| 6933 if (precision && nativeIsFinite(number)) { | |
| 6934 // Shift with exponential notation to avoid floating-point issues. | |
| 6935 // See [MDN](https://mdn.io/round#Examples) for more details. | |
| 6936 var pair = (toString(number) + 'e').split('e'), | |
| 6937 value = func(pair[0] + 'e' + (+pair[1] + precision)); | |
| 6938 | |
| 6939 pair = (toString(value) + 'e').split('e'); | |
| 6940 return +(pair[0] + 'e' + (+pair[1] - precision)); | |
| 6941 } | |
| 6942 return func(number); | |
| 6943 }; | |
| 6944 } | |
| 6945 | |
| 6946 /** | |
| 6947 * Creates a set object of `values`. | |
| 6948 * | |
| 6949 * @private | |
| 6950 * @param {Array} values The values to add to the set. | |
| 6951 * @returns {Object} Returns the new set. | |
| 6952 */ | |
| 6953 var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) { | |
| 6954 return new Set(values); | |
| 6955 }; | |
| 6956 | |
| 6957 /** | |
| 6958 * Creates a `_.toPairs` or `_.toPairsIn` function. | |
| 6959 * | |
| 6960 * @private | |
| 6961 * @param {Function} keysFunc The function to get the keys of a given object. | |
| 6962 * @returns {Function} Returns the new pairs function. | |
| 6963 */ | |
| 6964 function createToPairs(keysFunc) { | |
| 6965 return function(object) { | |
| 6966 var tag = getTag(object); | |
| 6967 if (tag == mapTag) { | |
| 6968 return mapToArray(object); | |
| 6969 } | |
| 6970 if (tag == setTag) { | |
| 6971 return setToPairs(object); | |
| 6972 } | |
| 6973 return baseToPairs(object, keysFunc(object)); | |
| 6974 }; | |
| 6975 } | |
| 6976 | |
| 6977 /** | |
| 6978 * Creates a function that either curries or invokes `func` with optional | |
| 6979 * `this` binding and partially applied arguments. | |
| 6980 * | |
| 6981 * @private | |
| 6982 * @param {Function|string} func The function or method name to wrap. | |
| 6983 * @param {number} bitmask The bitmask flags. | |
| 6984 * 1 - `_.bind` | |
| 6985 * 2 - `_.bindKey` | |
| 6986 * 4 - `_.curry` or `_.curryRight` of a bound function | |
| 6987 * 8 - `_.curry` | |
| 6988 * 16 - `_.curryRight` | |
| 6989 * 32 - `_.partial` | |
| 6990 * 64 - `_.partialRight` | |
| 6991 * 128 - `_.rearg` | |
| 6992 * 256 - `_.ary` | |
| 6993 * 512 - `_.flip` | |
| 6994 * @param {*} [thisArg] The `this` binding of `func`. | |
| 6995 * @param {Array} [partials] The arguments to be partially applied. | |
| 6996 * @param {Array} [holders] The `partials` placeholder indexes. | |
| 6997 * @param {Array} [argPos] The argument positions of the new function. | |
| 6998 * @param {number} [ary] The arity cap of `func`. | |
| 6999 * @param {number} [arity] The arity of `func`. | |
| 7000 * @returns {Function} Returns the new wrapped function. | |
| 7001 */ | |
| 7002 function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) { | |
| 7003 var isBindKey = bitmask & WRAP_BIND_KEY_FLAG; | |
| 7004 if (!isBindKey && typeof func != 'function') { | |
| 7005 throw new TypeError(FUNC_ERROR_TEXT); | |
| 7006 } | |
| 7007 var length = partials ? partials.length : 0; | |
| 7008 if (!length) { | |
| 7009 bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG); | |
| 7010 partials = holders = undefined; | |
| 7011 } | |
| 7012 ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0); | |
| 7013 arity = arity === undefined ? arity : toInteger(arity); | |
| 7014 length -= holders ? holders.length : 0; | |
| 7015 | |
| 7016 if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) { | |
| 7017 var partialsRight = partials, | |
| 7018 holdersRight = holders; | |
| 7019 | |
| 7020 partials = holders = undefined; | |
| 7021 } | |
| 7022 var data = isBindKey ? undefined : getData(func); | |
| 7023 | |
| 7024 var newData = [ | |
| 7025 func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, | |
| 7026 argPos, ary, arity | |
| 7027 ]; | |
| 7028 | |
| 7029 if (data) { | |
| 7030 mergeData(newData, data); | |
| 7031 } | |
| 7032 func = newData[0]; | |
| 7033 bitmask = newData[1]; | |
| 7034 thisArg = newData[2]; | |
| 7035 partials = newData[3]; | |
| 7036 holders = newData[4]; | |
| 7037 arity = newData[9] = newData[9] === undefined | |
| 7038 ? (isBindKey ? 0 : func.length) | |
| 7039 : nativeMax(newData[9] - length, 0); | |
| 7040 | |
| 7041 if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) { | |
| 7042 bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG); | |
| 7043 } | |
| 7044 if (!bitmask || bitmask == WRAP_BIND_FLAG) { | |
| 7045 var result = createBind(func, bitmask, thisArg); | |
| 7046 } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) { | |
| 7047 result = createCurry(func, bitmask, arity); | |
| 7048 } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) { | |
| 7049 result = createPartial(func, bitmask, thisArg, partials); | |
| 7050 } else { | |
| 7051 result = createHybrid.apply(undefined, newData); | |
| 7052 } | |
| 7053 var setter = data ? baseSetData : setData; | |
| 7054 return setWrapToString(setter(result, newData), func, bitmask); | |
| 7055 } | |
| 7056 | |
| 7057 /** | |
| 7058 * Used by `_.defaults` to customize its `_.assignIn` use to assign properties | |
| 7059 * of source objects to the destination object for all destination properties | |
| 7060 * that resolve to `undefined`. | |
| 7061 * | |
| 7062 * @private | |
| 7063 * @param {*} objValue The destination value. | |
| 7064 * @param {*} srcValue The source value. | |
| 7065 * @param {string} key The key of the property to assign. | |
| 7066 * @param {Object} object The parent object of `objValue`. | |
| 7067 * @returns {*} Returns the value to assign. | |
| 7068 */ | |
| 7069 function customDefaultsAssignIn(objValue, srcValue, key, object) { | |
| 7070 if (objValue === undefined || | |
| 7071 (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) { | |
| 7072 return srcValue; | |
| 7073 } | |
| 7074 return objValue; | |
| 7075 } | |
| 7076 | |
| 7077 /** | |
| 7078 * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source | |
| 7079 * objects into destination objects that are passed thru. | |
| 7080 * | |
| 7081 * @private | |
| 7082 * @param {*} objValue The destination value. | |
| 7083 * @param {*} srcValue The source value. | |
| 7084 * @param {string} key The key of the property to merge. | |
| 7085 * @param {Object} object The parent object of `objValue`. | |
| 7086 * @param {Object} source The parent object of `srcValue`. | |
| 7087 * @param {Object} [stack] Tracks traversed source values and their merged | |
| 7088 * counterparts. | |
| 7089 * @returns {*} Returns the value to assign. | |
| 7090 */ | |
| 7091 function customDefaultsMerge(objValue, srcValue, key, object, source, stack) { | |
| 7092 if (isObject(objValue) && isObject(srcValue)) { | |
| 7093 // Recursively merge objects and arrays (susceptible to call stack limits). | |
| 7094 stack.set(srcValue, objValue); | |
| 7095 baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack); | |
| 7096 stack['delete'](srcValue); | |
| 7097 } | |
| 7098 return objValue; | |
| 7099 } | |
| 7100 | |
| 7101 /** | |
| 7102 * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain | |
| 7103 * objects. | |
| 7104 * | |
| 7105 * @private | |
| 7106 * @param {*} value The value to inspect. | |
| 7107 * @param {string} key The key of the property to inspect. | |
| 7108 * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`. | |
| 7109 */ | |
| 7110 function customOmitClone(value) { | |
| 7111 return isPlainObject(value) ? undefined : value; | |
| 7112 } | |
| 7113 | |
| 7114 /** | |
| 7115 * A specialized version of `baseIsEqualDeep` for arrays with support for | |
| 7116 * partial deep comparisons. | |
| 7117 * | |
| 7118 * @private | |
| 7119 * @param {Array} array The array to compare. | |
| 7120 * @param {Array} other The other array to compare. | |
| 7121 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. | |
| 7122 * @param {Function} customizer The function to customize comparisons. | |
| 7123 * @param {Function} equalFunc The function to determine equivalents of values. | |
| 7124 * @param {Object} stack Tracks traversed `array` and `other` objects. | |
| 7125 * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`. | |
| 7126 */ | |
| 7127 function equalArrays(array, other, bitmask, customizer, equalFunc, stack) { | |
| 7128 var isPartial = bitmask & COMPARE_PARTIAL_FLAG, | |
| 7129 arrLength = array.length, | |
| 7130 othLength = other.length; | |
| 7131 | |
| 7132 if (arrLength != othLength && !(isPartial && othLength > arrLength)) { | |
| 7133 return false; | |
| 7134 } | |
| 7135 // Check that cyclic values are equal. | |
| 7136 var arrStacked = stack.get(array); | |
| 7137 var othStacked = stack.get(other); | |
| 7138 if (arrStacked && othStacked) { | |
| 7139 return arrStacked == other && othStacked == array; | |
| 7140 } | |
| 7141 var index = -1, | |
| 7142 result = true, | |
| 7143 seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined; | |
| 7144 | |
| 7145 stack.set(array, other); | |
| 7146 stack.set(other, array); | |
| 7147 | |
| 7148 // Ignore non-index properties. | |
| 7149 while (++index < arrLength) { | |
| 7150 var arrValue = array[index], | |
| 7151 othValue = other[index]; | |
| 7152 | |
| 7153 if (customizer) { | |
| 7154 var compared = isPartial | |
| 7155 ? customizer(othValue, arrValue, index, other, array, stack) | |
| 7156 : customizer(arrValue, othValue, index, array, other, stack); | |
| 7157 } | |
| 7158 if (compared !== undefined) { | |
| 7159 if (compared) { | |
| 7160 continue; | |
| 7161 } | |
| 7162 result = false; | |
| 7163 break; | |
| 7164 } | |
| 7165 // Recursively compare arrays (susceptible to call stack limits). | |
| 7166 if (seen) { | |
| 7167 if (!arraySome(other, function(othValue, othIndex) { | |
| 7168 if (!cacheHas(seen, othIndex) && | |
| 7169 (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) { | |
| 7170 return seen.push(othIndex); | |
| 7171 } | |
| 7172 })) { | |
| 7173 result = false; | |
| 7174 break; | |
| 7175 } | |
| 7176 } else if (!( | |
| 7177 arrValue === othValue || | |
| 7178 equalFunc(arrValue, othValue, bitmask, customizer, stack) | |
| 7179 )) { | |
| 7180 result = false; | |
| 7181 break; | |
| 7182 } | |
| 7183 } | |
| 7184 stack['delete'](array); | |
| 7185 stack['delete'](other); | |
| 7186 return result; | |
| 7187 } | |
| 7188 | |
| 7189 /** | |
| 7190 * A specialized version of `baseIsEqualDeep` for comparing objects of | |
| 7191 * the same `toStringTag`. | |
| 7192 * | |
| 7193 * **Note:** This function only supports comparing values with tags of | |
| 7194 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. | |
| 7195 * | |
| 7196 * @private | |
| 7197 * @param {Object} object The object to compare. | |
| 7198 * @param {Object} other The other object to compare. | |
| 7199 * @param {string} tag The `toStringTag` of the objects to compare. | |
| 7200 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. | |
| 7201 * @param {Function} customizer The function to customize comparisons. | |
| 7202 * @param {Function} equalFunc The function to determine equivalents of values. | |
| 7203 * @param {Object} stack Tracks traversed `object` and `other` objects. | |
| 7204 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. | |
| 7205 */ | |
| 7206 function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) { | |
| 7207 switch (tag) { | |
| 7208 case dataViewTag: | |
| 7209 if ((object.byteLength != other.byteLength) || | |
| 7210 (object.byteOffset != other.byteOffset)) { | |
| 7211 return false; | |
| 7212 } | |
| 7213 object = object.buffer; | |
| 7214 other = other.buffer; | |
| 7215 | |
| 7216 case arrayBufferTag: | |
| 7217 if ((object.byteLength != other.byteLength) || | |
| 7218 !equalFunc(new Uint8Array(object), new Uint8Array(other))) { | |
| 7219 return false; | |
| 7220 } | |
| 7221 return true; | |
| 7222 | |
| 7223 case boolTag: | |
| 7224 case dateTag: | |
| 7225 case numberTag: | |
| 7226 // Coerce booleans to `1` or `0` and dates to milliseconds. | |
| 7227 // Invalid dates are coerced to `NaN`. | |
| 7228 return eq(+object, +other); | |
| 7229 | |
| 7230 case errorTag: | |
| 7231 return object.name == other.name && object.message == other.message; | |
| 7232 | |
| 7233 case regexpTag: | |
| 7234 case stringTag: | |
| 7235 // Coerce regexes to strings and treat strings, primitives and objects, | |
| 7236 // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring | |
| 7237 // for more details. | |
| 7238 return object == (other + ''); | |
| 7239 | |
| 7240 case mapTag: | |
| 7241 var convert = mapToArray; | |
| 7242 | |
| 7243 case setTag: | |
| 7244 var isPartial = bitmask & COMPARE_PARTIAL_FLAG; | |
| 7245 convert || (convert = setToArray); | |
| 7246 | |
| 7247 if (object.size != other.size && !isPartial) { | |
| 7248 return false; | |
| 7249 } | |
| 7250 // Assume cyclic values are equal. | |
| 7251 var stacked = stack.get(object); | |
| 7252 if (stacked) { | |
| 7253 return stacked == other; | |
| 7254 } | |
| 7255 bitmask |= COMPARE_UNORDERED_FLAG; | |
| 7256 | |
| 7257 // Recursively compare objects (susceptible to call stack limits). | |
| 7258 stack.set(object, other); | |
| 7259 var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack); | |
| 7260 stack['delete'](object); | |
| 7261 return result; | |
| 7262 | |
| 7263 case symbolTag: | |
| 7264 if (symbolValueOf) { | |
| 7265 return symbolValueOf.call(object) == symbolValueOf.call(other); | |
| 7266 } | |
| 7267 } | |
| 7268 return false; | |
| 7269 } | |
| 7270 | |
| 7271 /** | |
| 7272 * A specialized version of `baseIsEqualDeep` for objects with support for | |
| 7273 * partial deep comparisons. | |
| 7274 * | |
| 7275 * @private | |
| 7276 * @param {Object} object The object to compare. | |
| 7277 * @param {Object} other The other object to compare. | |
| 7278 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. | |
| 7279 * @param {Function} customizer The function to customize comparisons. | |
| 7280 * @param {Function} equalFunc The function to determine equivalents of values. | |
| 7281 * @param {Object} stack Tracks traversed `object` and `other` objects. | |
| 7282 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. | |
| 7283 */ | |
| 7284 function equalObjects(object, other, bitmask, customizer, equalFunc, stack) { | |
| 7285 var isPartial = bitmask & COMPARE_PARTIAL_FLAG, | |
| 7286 objProps = getAllKeys(object), | |
| 7287 objLength = objProps.length, | |
| 7288 othProps = getAllKeys(other), | |
| 7289 othLength = othProps.length; | |
| 7290 | |
| 7291 if (objLength != othLength && !isPartial) { | |
| 7292 return false; | |
| 7293 } | |
| 7294 var index = objLength; | |
| 7295 while (index--) { | |
| 7296 var key = objProps[index]; | |
| 7297 if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) { | |
| 7298 return false; | |
| 7299 } | |
| 7300 } | |
| 7301 // Check that cyclic values are equal. | |
| 7302 var objStacked = stack.get(object); | |
| 7303 var othStacked = stack.get(other); | |
| 7304 if (objStacked && othStacked) { | |
| 7305 return objStacked == other && othStacked == object; | |
| 7306 } | |
| 7307 var result = true; | |
| 7308 stack.set(object, other); | |
| 7309 stack.set(other, object); | |
| 7310 | |
| 7311 var skipCtor = isPartial; | |
| 7312 while (++index < objLength) { | |
| 7313 key = objProps[index]; | |
| 7314 var objValue = object[key], | |
| 7315 othValue = other[key]; | |
| 7316 | |
| 7317 if (customizer) { | |
| 7318 var compared = isPartial | |
| 7319 ? customizer(othValue, objValue, key, other, object, stack) | |
| 7320 : customizer(objValue, othValue, key, object, other, stack); | |
| 7321 } | |
| 7322 // Recursively compare objects (susceptible to call stack limits). | |
| 7323 if (!(compared === undefined | |
| 7324 ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack)) | |
| 7325 : compared | |
| 7326 )) { | |
| 7327 result = false; | |
| 7328 break; | |
| 7329 } | |
| 7330 skipCtor || (skipCtor = key == 'constructor'); | |
| 7331 } | |
| 7332 if (result && !skipCtor) { | |
| 7333 var objCtor = object.constructor, | |
| 7334 othCtor = other.constructor; | |
| 7335 | |
| 7336 // Non `Object` object instances with different constructors are not equal. | |
| 7337 if (objCtor != othCtor && | |
| 7338 ('constructor' in object && 'constructor' in other) && | |
| 7339 !(typeof objCtor == 'function' && objCtor instanceof objCtor && | |
| 7340 typeof othCtor == 'function' && othCtor instanceof othCtor)) { | |
| 7341 result = false; | |
| 7342 } | |
| 7343 } | |
| 7344 stack['delete'](object); | |
| 7345 stack['delete'](other); | |
| 7346 return result; | |
| 7347 } | |
| 7348 | |
| 7349 /** | |
| 7350 * A specialized version of `baseRest` which flattens the rest array. | |
| 7351 * | |
| 7352 * @private | |
| 7353 * @param {Function} func The function to apply a rest parameter to. | |
| 7354 * @returns {Function} Returns the new function. | |
| 7355 */ | |
| 7356 function flatRest(func) { | |
| 7357 return setToString(overRest(func, undefined, flatten), func + ''); | |
| 7358 } | |
| 7359 | |
| 7360 /** | |
| 7361 * Creates an array of own enumerable property names and symbols of `object`. | |
| 7362 * | |
| 7363 * @private | |
| 7364 * @param {Object} object The object to query. | |
| 7365 * @returns {Array} Returns the array of property names and symbols. | |
| 7366 */ | |
| 7367 function getAllKeys(object) { | |
| 7368 return baseGetAllKeys(object, keys, getSymbols); | |
| 7369 } | |
| 7370 | |
| 7371 /** | |
| 7372 * Creates an array of own and inherited enumerable property names and | |
| 7373 * symbols of `object`. | |
| 7374 * | |
| 7375 * @private | |
| 7376 * @param {Object} object The object to query. | |
| 7377 * @returns {Array} Returns the array of property names and symbols. | |
| 7378 */ | |
| 7379 function getAllKeysIn(object) { | |
| 7380 return baseGetAllKeys(object, keysIn, getSymbolsIn); | |
| 7381 } | |
| 7382 | |
| 7383 /** | |
| 7384 * Gets metadata for `func`. | |
| 7385 * | |
| 7386 * @private | |
| 7387 * @param {Function} func The function to query. | |
| 7388 * @returns {*} Returns the metadata for `func`. | |
| 7389 */ | |
| 7390 var getData = !metaMap ? noop : function(func) { | |
| 7391 return metaMap.get(func); | |
| 7392 }; | |
| 7393 | |
| 7394 /** | |
| 7395 * Gets the name of `func`. | |
| 7396 * | |
| 7397 * @private | |
| 7398 * @param {Function} func The function to query. | |
| 7399 * @returns {string} Returns the function name. | |
| 7400 */ | |
| 7401 function getFuncName(func) { | |
| 7402 var result = (func.name + ''), | |
| 7403 array = realNames[result], | |
| 7404 length = hasOwnProperty.call(realNames, result) ? array.length : 0; | |
| 7405 | |
| 7406 while (length--) { | |
| 7407 var data = array[length], | |
| 7408 otherFunc = data.func; | |
| 7409 if (otherFunc == null || otherFunc == func) { | |
| 7410 return data.name; | |
| 7411 } | |
| 7412 } | |
| 7413 return result; | |
| 7414 } | |
| 7415 | |
| 7416 /** | |
| 7417 * Gets the argument placeholder value for `func`. | |
| 7418 * | |
| 7419 * @private | |
| 7420 * @param {Function} func The function to inspect. | |
| 7421 * @returns {*} Returns the placeholder value. | |
| 7422 */ | |
| 7423 function getHolder(func) { | |
| 7424 var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func; | |
| 7425 return object.placeholder; | |
| 7426 } | |
| 7427 | |
| 7428 /** | |
| 7429 * Gets the appropriate "iteratee" function. If `_.iteratee` is customized, | |
| 7430 * this function returns the custom method, otherwise it returns `baseIteratee`. | |
| 7431 * If arguments are provided, the chosen function is invoked with them and | |
| 7432 * its result is returned. | |
| 7433 * | |
| 7434 * @private | |
| 7435 * @param {*} [value] The value to convert to an iteratee. | |
| 7436 * @param {number} [arity] The arity of the created iteratee. | |
| 7437 * @returns {Function} Returns the chosen function or its result. | |
| 7438 */ | |
| 7439 function getIteratee() { | |
| 7440 var result = lodash.iteratee || iteratee; | |
| 7441 result = result === iteratee ? baseIteratee : result; | |
| 7442 return arguments.length ? result(arguments[0], arguments[1]) : result; | |
| 7443 } | |
| 7444 | |
| 7445 /** | |
| 7446 * Gets the data for `map`. | |
| 7447 * | |
| 7448 * @private | |
| 7449 * @param {Object} map The map to query. | |
| 7450 * @param {string} key The reference key. | |
| 7451 * @returns {*} Returns the map data. | |
| 7452 */ | |
| 7453 function getMapData(map, key) { | |
| 7454 var data = map.__data__; | |
| 7455 return isKeyable(key) | |
| 7456 ? data[typeof key == 'string' ? 'string' : 'hash'] | |
| 7457 : data.map; | |
| 7458 } | |
| 7459 | |
| 7460 /** | |
| 7461 * Gets the property names, values, and compare flags of `object`. | |
| 7462 * | |
| 7463 * @private | |
| 7464 * @param {Object} object The object to query. | |
| 7465 * @returns {Array} Returns the match data of `object`. | |
| 7466 */ | |
| 7467 function getMatchData(object) { | |
| 7468 var result = keys(object), | |
| 7469 length = result.length; | |
| 7470 | |
| 7471 while (length--) { | |
| 7472 var key = result[length], | |
| 7473 value = object[key]; | |
| 7474 | |
| 7475 result[length] = [key, value, isStrictComparable(value)]; | |
| 7476 } | |
| 7477 return result; | |
| 7478 } | |
| 7479 | |
| 7480 /** | |
| 7481 * Gets the native function at `key` of `object`. | |
| 7482 * | |
| 7483 * @private | |
| 7484 * @param {Object} object The object to query. | |
| 7485 * @param {string} key The key of the method to get. | |
| 7486 * @returns {*} Returns the function if it's native, else `undefined`. | |
| 7487 */ | |
| 7488 function getNative(object, key) { | |
| 7489 var value = getValue(object, key); | |
| 7490 return baseIsNative(value) ? value : undefined; | |
| 7491 } | |
| 7492 | |
| 7493 /** | |
| 7494 * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values. | |
| 7495 * | |
| 7496 * @private | |
| 7497 * @param {*} value The value to query. | |
| 7498 * @returns {string} Returns the raw `toStringTag`. | |
| 7499 */ | |
| 7500 function getRawTag(value) { | |
| 7501 var isOwn = hasOwnProperty.call(value, symToStringTag), | |
| 7502 tag = value[symToStringTag]; | |
| 7503 | |
| 7504 try { | |
| 7505 value[symToStringTag] = undefined; | |
| 7506 var unmasked = true; | |
| 7507 } catch (e) {} | |
| 7508 | |
| 7509 var result = nativeObjectToString.call(value); | |
| 7510 if (unmasked) { | |
| 7511 if (isOwn) { | |
| 7512 value[symToStringTag] = tag; | |
| 7513 } else { | |
| 7514 delete value[symToStringTag]; | |
| 7515 } | |
| 7516 } | |
| 7517 return result; | |
| 7518 } | |
| 7519 | |
| 7520 /** | |
| 7521 * Creates an array of the own enumerable symbols of `object`. | |
| 7522 * | |
| 7523 * @private | |
| 7524 * @param {Object} object The object to query. | |
| 7525 * @returns {Array} Returns the array of symbols. | |
| 7526 */ | |
| 7527 var getSymbols = !nativeGetSymbols ? stubArray : function(object) { | |
| 7528 if (object == null) { | |
| 7529 return []; | |
| 7530 } | |
| 7531 object = Object(object); | |
| 7532 return arrayFilter(nativeGetSymbols(object), function(symbol) { | |
| 7533 return propertyIsEnumerable.call(object, symbol); | |
| 7534 }); | |
| 7535 }; | |
| 7536 | |
| 7537 /** | |
| 7538 * Creates an array of the own and inherited enumerable symbols of `object`. | |
| 7539 * | |
| 7540 * @private | |
| 7541 * @param {Object} object The object to query. | |
| 7542 * @returns {Array} Returns the array of symbols. | |
| 7543 */ | |
| 7544 var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) { | |
| 7545 var result = []; | |
| 7546 while (object) { | |
| 7547 arrayPush(result, getSymbols(object)); | |
| 7548 object = getPrototype(object); | |
| 7549 } | |
| 7550 return result; | |
| 7551 }; | |
| 7552 | |
| 7553 /** | |
| 7554 * Gets the `toStringTag` of `value`. | |
| 7555 * | |
| 7556 * @private | |
| 7557 * @param {*} value The value to query. | |
| 7558 * @returns {string} Returns the `toStringTag`. | |
| 7559 */ | |
| 7560 var getTag = baseGetTag; | |
| 7561 | |
| 7562 // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6. | |
| 7563 if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) || | |
| 7564 (Map && getTag(new Map) != mapTag) || | |
| 7565 (Promise && getTag(Promise.resolve()) != promiseTag) || | |
| 7566 (Set && getTag(new Set) != setTag) || | |
| 7567 (WeakMap && getTag(new WeakMap) != weakMapTag)) { | |
| 7568 getTag = function(value) { | |
| 7569 var result = baseGetTag(value), | |
| 7570 Ctor = result == objectTag ? value.constructor : undefined, | |
| 7571 ctorString = Ctor ? toSource(Ctor) : ''; | |
| 7572 | |
| 7573 if (ctorString) { | |
| 7574 switch (ctorString) { | |
| 7575 case dataViewCtorString: return dataViewTag; | |
| 7576 case mapCtorString: return mapTag; | |
| 7577 case promiseCtorString: return promiseTag; | |
| 7578 case setCtorString: return setTag; | |
| 7579 case weakMapCtorString: return weakMapTag; | |
| 7580 } | |
| 7581 } | |
| 7582 return result; | |
| 7583 }; | |
| 7584 } | |
| 7585 | |
| 7586 /** | |
| 7587 * Gets the view, applying any `transforms` to the `start` and `end` positions. | |
| 7588 * | |
| 7589 * @private | |
| 7590 * @param {number} start The start of the view. | |
| 7591 * @param {number} end The end of the view. | |
| 7592 * @param {Array} transforms The transformations to apply to the view. | |
| 7593 * @returns {Object} Returns an object containing the `start` and `end` | |
| 7594 * positions of the view. | |
| 7595 */ | |
| 7596 function getView(start, end, transforms) { | |
| 7597 var index = -1, | |
| 7598 length = transforms.length; | |
| 7599 | |
| 7600 while (++index < length) { | |
| 7601 var data = transforms[index], | |
| 7602 size = data.size; | |
| 7603 | |
| 7604 switch (data.type) { | |
| 7605 case 'drop': start += size; break; | |
| 7606 case 'dropRight': end -= size; break; | |
| 7607 case 'take': end = nativeMin(end, start + size); break; | |
| 7608 case 'takeRight': start = nativeMax(start, end - size); break; | |
| 7609 } | |
| 7610 } | |
| 7611 return { 'start': start, 'end': end }; | |
| 7612 } | |
| 7613 | |
| 7614 /** | |
| 7615 * Extracts wrapper details from the `source` body comment. | |
| 7616 * | |
| 7617 * @private | |
| 7618 * @param {string} source The source to inspect. | |
| 7619 * @returns {Array} Returns the wrapper details. | |
| 7620 */ | |
| 7621 function getWrapDetails(source) { | |
| 7622 var match = source.match(reWrapDetails); | |
| 7623 return match ? match[1].split(reSplitDetails) : []; | |
| 7624 } | |
| 7625 | |
| 7626 /** | |
| 7627 * Checks if `path` exists on `object`. | |
| 7628 * | |
| 7629 * @private | |
| 7630 * @param {Object} object The object to query. | |
| 7631 * @param {Array|string} path The path to check. | |
| 7632 * @param {Function} hasFunc The function to check properties. | |
| 7633 * @returns {boolean} Returns `true` if `path` exists, else `false`. | |
| 7634 */ | |
| 7635 function hasPath(object, path, hasFunc) { | |
| 7636 path = castPath(path, object); | |
| 7637 | |
| 7638 var index = -1, | |
| 7639 length = path.length, | |
| 7640 result = false; | |
| 7641 | |
| 7642 while (++index < length) { | |
| 7643 var key = toKey(path[index]); | |
| 7644 if (!(result = object != null && hasFunc(object, key))) { | |
| 7645 break; | |
| 7646 } | |
| 7647 object = object[key]; | |
| 7648 } | |
| 7649 if (result || ++index != length) { | |
| 7650 return result; | |
| 7651 } | |
| 7652 length = object == null ? 0 : object.length; | |
| 7653 return !!length && isLength(length) && isIndex(key, length) && | |
| 7654 (isArray(object) || isArguments(object)); | |
| 7655 } | |
| 7656 | |
| 7657 /** | |
| 7658 * Initializes an array clone. | |
| 7659 * | |
| 7660 * @private | |
| 7661 * @param {Array} array The array to clone. | |
| 7662 * @returns {Array} Returns the initialized clone. | |
| 7663 */ | |
| 7664 function initCloneArray(array) { | |
| 7665 var length = array.length, | |
| 7666 result = new array.constructor(length); | |
| 7667 | |
| 7668 // Add properties assigned by `RegExp#exec`. | |
| 7669 if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) { | |
| 7670 result.index = array.index; | |
| 7671 result.input = array.input; | |
| 7672 } | |
| 7673 return result; | |
| 7674 } | |
| 7675 | |
| 7676 /** | |
| 7677 * Initializes an object clone. | |
| 7678 * | |
| 7679 * @private | |
| 7680 * @param {Object} object The object to clone. | |
| 7681 * @returns {Object} Returns the initialized clone. | |
| 7682 */ | |
| 7683 function initCloneObject(object) { | |
| 7684 return (typeof object.constructor == 'function' && !isPrototype(object)) | |
| 7685 ? baseCreate(getPrototype(object)) | |
| 7686 : {}; | |
| 7687 } | |
| 7688 | |
| 7689 /** | |
| 7690 * Initializes an object clone based on its `toStringTag`. | |
| 7691 * | |
| 7692 * **Note:** This function only supports cloning values with tags of | |
| 7693 * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`. | |
| 7694 * | |
| 7695 * @private | |
| 7696 * @param {Object} object The object to clone. | |
| 7697 * @param {string} tag The `toStringTag` of the object to clone. | |
| 7698 * @param {boolean} [isDeep] Specify a deep clone. | |
| 7699 * @returns {Object} Returns the initialized clone. | |
| 7700 */ | |
| 7701 function initCloneByTag(object, tag, isDeep) { | |
| 7702 var Ctor = object.constructor; | |
| 7703 switch (tag) { | |
| 7704 case arrayBufferTag: | |
| 7705 return cloneArrayBuffer(object); | |
| 7706 | |
| 7707 case boolTag: | |
| 7708 case dateTag: | |
| 7709 return new Ctor(+object); | |
| 7710 | |
| 7711 case dataViewTag: | |
| 7712 return cloneDataView(object, isDeep); | |
| 7713 | |
| 7714 case float32Tag: case float64Tag: | |
| 7715 case int8Tag: case int16Tag: case int32Tag: | |
| 7716 case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag: | |
| 7717 return cloneTypedArray(object, isDeep); | |
| 7718 | |
| 7719 case mapTag: | |
| 7720 return new Ctor; | |
| 7721 | |
| 7722 case numberTag: | |
| 7723 case stringTag: | |
| 7724 return new Ctor(object); | |
| 7725 | |
| 7726 case regexpTag: | |
| 7727 return cloneRegExp(object); | |
| 7728 | |
| 7729 case setTag: | |
| 7730 return new Ctor; | |
| 7731 | |
| 7732 case symbolTag: | |
| 7733 return cloneSymbol(object); | |
| 7734 } | |
| 7735 } | |
| 7736 | |
| 7737 /** | |
| 7738 * Inserts wrapper `details` in a comment at the top of the `source` body. | |
| 7739 * | |
| 7740 * @private | |
| 7741 * @param {string} source The source to modify. | |
| 7742 * @returns {Array} details The details to insert. | |
| 7743 * @returns {string} Returns the modified source. | |
| 7744 */ | |
| 7745 function insertWrapDetails(source, details) { | |
| 7746 var length = details.length; | |
| 7747 if (!length) { | |
| 7748 return source; | |
| 7749 } | |
| 7750 var lastIndex = length - 1; | |
| 7751 details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex]; | |
| 7752 details = details.join(length > 2 ? ', ' : ' '); | |
| 7753 return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n'); | |
| 7754 } | |
| 7755 | |
| 7756 /** | |
| 7757 * Checks if `value` is a flattenable `arguments` object or array. | |
| 7758 * | |
| 7759 * @private | |
| 7760 * @param {*} value The value to check. | |
| 7761 * @returns {boolean} Returns `true` if `value` is flattenable, else `false`. | |
| 7762 */ | |
| 7763 function isFlattenable(value) { | |
| 7764 return isArray(value) || isArguments(value) || | |
| 7765 !!(spreadableSymbol && value && value[spreadableSymbol]); | |
| 7766 } | |
| 7767 | |
| 7768 /** | |
| 7769 * Checks if `value` is a valid array-like index. | |
| 7770 * | |
| 7771 * @private | |
| 7772 * @param {*} value The value to check. | |
| 7773 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. | |
| 7774 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. | |
| 7775 */ | |
| 7776 function isIndex(value, length) { | |
| 7777 var type = typeof value; | |
| 7778 length = length == null ? MAX_SAFE_INTEGER : length; | |
| 7779 | |
| 7780 return !!length && | |
| 7781 (type == 'number' || | |
| 7782 (type != 'symbol' && reIsUint.test(value))) && | |
| 7783 (value > -1 && value % 1 == 0 && value < length); | |
| 7784 } | |
| 7785 | |
| 7786 /** | |
| 7787 * Checks if the given arguments are from an iteratee call. | |
| 7788 * | |
| 7789 * @private | |
| 7790 * @param {*} value The potential iteratee value argument. | |
| 7791 * @param {*} index The potential iteratee index or key argument. | |
| 7792 * @param {*} object The potential iteratee object argument. | |
| 7793 * @returns {boolean} Returns `true` if the arguments are from an iteratee call, | |
| 7794 * else `false`. | |
| 7795 */ | |
| 7796 function isIterateeCall(value, index, object) { | |
| 7797 if (!isObject(object)) { | |
| 7798 return false; | |
| 7799 } | |
| 7800 var type = typeof index; | |
| 7801 if (type == 'number' | |
| 7802 ? (isArrayLike(object) && isIndex(index, object.length)) | |
| 7803 : (type == 'string' && index in object) | |
| 7804 ) { | |
| 7805 return eq(object[index], value); | |
| 7806 } | |
| 7807 return false; | |
| 7808 } | |
| 7809 | |
| 7810 /** | |
| 7811 * Checks if `value` is a property name and not a property path. | |
| 7812 * | |
| 7813 * @private | |
| 7814 * @param {*} value The value to check. | |
| 7815 * @param {Object} [object] The object to query keys on. | |
| 7816 * @returns {boolean} Returns `true` if `value` is a property name, else `false`. | |
| 7817 */ | |
| 7818 function isKey(value, object) { | |
| 7819 if (isArray(value)) { | |
| 7820 return false; | |
| 7821 } | |
| 7822 var type = typeof value; | |
| 7823 if (type == 'number' || type == 'symbol' || type == 'boolean' || | |
| 7824 value == null || isSymbol(value)) { | |
| 7825 return true; | |
| 7826 } | |
| 7827 return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || | |
| 7828 (object != null && value in Object(object)); | |
| 7829 } | |
| 7830 | |
| 7831 /** | |
| 7832 * Checks if `value` is suitable for use as unique object key. | |
| 7833 * | |
| 7834 * @private | |
| 7835 * @param {*} value The value to check. | |
| 7836 * @returns {boolean} Returns `true` if `value` is suitable, else `false`. | |
| 7837 */ | |
| 7838 function isKeyable(value) { | |
| 7839 var type = typeof value; | |
| 7840 return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean') | |
| 7841 ? (value !== '__proto__') | |
| 7842 : (value === null); | |
| 7843 } | |
| 7844 | |
| 7845 /** | |
| 7846 * Checks if `func` has a lazy counterpart. | |
| 7847 * | |
| 7848 * @private | |
| 7849 * @param {Function} func The function to check. | |
| 7850 * @returns {boolean} Returns `true` if `func` has a lazy counterpart, | |
| 7851 * else `false`. | |
| 7852 */ | |
| 7853 function isLaziable(func) { | |
| 7854 var funcName = getFuncName(func), | |
| 7855 other = lodash[funcName]; | |
| 7856 | |
| 7857 if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) { | |
| 7858 return false; | |
| 7859 } | |
| 7860 if (func === other) { | |
| 7861 return true; | |
| 7862 } | |
| 7863 var data = getData(other); | |
| 7864 return !!data && func === data[0]; | |
| 7865 } | |
| 7866 | |
| 7867 /** | |
| 7868 * Checks if `func` has its source masked. | |
| 7869 * | |
| 7870 * @private | |
| 7871 * @param {Function} func The function to check. | |
| 7872 * @returns {boolean} Returns `true` if `func` is masked, else `false`. | |
| 7873 */ | |
| 7874 function isMasked(func) { | |
| 7875 return !!maskSrcKey && (maskSrcKey in func); | |
| 7876 } | |
| 7877 | |
| 7878 /** | |
| 7879 * Checks if `func` is capable of being masked. | |
| 7880 * | |
| 7881 * @private | |
| 7882 * @param {*} value The value to check. | |
| 7883 * @returns {boolean} Returns `true` if `func` is maskable, else `false`. | |
| 7884 */ | |
| 7885 var isMaskable = coreJsData ? isFunction : stubFalse; | |
| 7886 | |
| 7887 /** | |
| 7888 * Checks if `value` is likely a prototype object. | |
| 7889 * | |
| 7890 * @private | |
| 7891 * @param {*} value The value to check. | |
| 7892 * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. | |
| 7893 */ | |
| 7894 function isPrototype(value) { | |
| 7895 var Ctor = value && value.constructor, | |
| 7896 proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto; | |
| 7897 | |
| 7898 return value === proto; | |
| 7899 } | |
| 7900 | |
| 7901 /** | |
| 7902 * Checks if `value` is suitable for strict equality comparisons, i.e. `===`. | |
| 7903 * | |
| 7904 * @private | |
| 7905 * @param {*} value The value to check. | |
| 7906 * @returns {boolean} Returns `true` if `value` if suitable for strict | |
| 7907 * equality comparisons, else `false`. | |
| 7908 */ | |
| 7909 function isStrictComparable(value) { | |
| 7910 return value === value && !isObject(value); | |
| 7911 } | |
| 7912 | |
| 7913 /** | |
| 7914 * A specialized version of `matchesProperty` for source values suitable | |
| 7915 * for strict equality comparisons, i.e. `===`. | |
| 7916 * | |
| 7917 * @private | |
| 7918 * @param {string} key The key of the property to get. | |
| 7919 * @param {*} srcValue The value to match. | |
| 7920 * @returns {Function} Returns the new spec function. | |
| 7921 */ | |
| 7922 function matchesStrictComparable(key, srcValue) { | |
| 7923 return function(object) { | |
| 7924 if (object == null) { | |
| 7925 return false; | |
| 7926 } | |
| 7927 return object[key] === srcValue && | |
| 7928 (srcValue !== undefined || (key in Object(object))); | |
| 7929 }; | |
| 7930 } | |
| 7931 | |
| 7932 /** | |
| 7933 * A specialized version of `_.memoize` which clears the memoized function's | |
| 7934 * cache when it exceeds `MAX_MEMOIZE_SIZE`. | |
| 7935 * | |
| 7936 * @private | |
| 7937 * @param {Function} func The function to have its output memoized. | |
| 7938 * @returns {Function} Returns the new memoized function. | |
| 7939 */ | |
| 7940 function memoizeCapped(func) { | |
| 7941 var result = memoize(func, function(key) { | |
| 7942 if (cache.size === MAX_MEMOIZE_SIZE) { | |
| 7943 cache.clear(); | |
| 7944 } | |
| 7945 return key; | |
| 7946 }); | |
| 7947 | |
| 7948 var cache = result.cache; | |
| 7949 return result; | |
| 7950 } | |
| 7951 | |
| 7952 /** | |
| 7953 * Merges the function metadata of `source` into `data`. | |
| 7954 * | |
| 7955 * Merging metadata reduces the number of wrappers used to invoke a function. | |
| 7956 * This is possible because methods like `_.bind`, `_.curry`, and `_.partial` | |
| 7957 * may be applied regardless of execution order. Methods like `_.ary` and | |
| 7958 * `_.rearg` modify function arguments, making the order in which they are | |
| 7959 * executed important, preventing the merging of metadata. However, we make | |
| 7960 * an exception for a safe combined case where curried functions have `_.ary` | |
| 7961 * and or `_.rearg` applied. | |
| 7962 * | |
| 7963 * @private | |
| 7964 * @param {Array} data The destination metadata. | |
| 7965 * @param {Array} source The source metadata. | |
| 7966 * @returns {Array} Returns `data`. | |
| 7967 */ | |
| 7968 function mergeData(data, source) { | |
| 7969 var bitmask = data[1], | |
| 7970 srcBitmask = source[1], | |
| 7971 newBitmask = bitmask | srcBitmask, | |
| 7972 isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG); | |
| 7973 | |
| 7974 var isCombo = | |
| 7975 ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) || | |
| 7976 ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) || | |
| 7977 ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG)); | |
| 7978 | |
| 7979 // Exit early if metadata can't be merged. | |
| 7980 if (!(isCommon || isCombo)) { | |
| 7981 return data; | |
| 7982 } | |
| 7983 // Use source `thisArg` if available. | |
| 7984 if (srcBitmask & WRAP_BIND_FLAG) { | |
| 7985 data[2] = source[2]; | |
| 7986 // Set when currying a bound function. | |
| 7987 newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG; | |
| 7988 } | |
| 7989 // Compose partial arguments. | |
| 7990 var value = source[3]; | |
| 7991 if (value) { | |
| 7992 var partials = data[3]; | |
| 7993 data[3] = partials ? composeArgs(partials, value, source[4]) : value; | |
| 7994 data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4]; | |
| 7995 } | |
| 7996 // Compose partial right arguments. | |
| 7997 value = source[5]; | |
| 7998 if (value) { | |
| 7999 partials = data[5]; | |
| 8000 data[5] = partials ? composeArgsRight(partials, value, source[6]) : value; | |
| 8001 data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6]; | |
| 8002 } | |
| 8003 // Use source `argPos` if available. | |
| 8004 value = source[7]; | |
| 8005 if (value) { | |
| 8006 data[7] = value; | |
| 8007 } | |
| 8008 // Use source `ary` if it's smaller. | |
| 8009 if (srcBitmask & WRAP_ARY_FLAG) { | |
| 8010 data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]); | |
| 8011 } | |
| 8012 // Use source `arity` if one is not provided. | |
| 8013 if (data[9] == null) { | |
| 8014 data[9] = source[9]; | |
| 8015 } | |
| 8016 // Use source `func` and merge bitmasks. | |
| 8017 data[0] = source[0]; | |
| 8018 data[1] = newBitmask; | |
| 8019 | |
| 8020 return data; | |
| 8021 } | |
| 8022 | |
| 8023 /** | |
| 8024 * This function is like | |
| 8025 * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) | |
| 8026 * except that it includes inherited enumerable properties. | |
| 8027 * | |
| 8028 * @private | |
| 8029 * @param {Object} object The object to query. | |
| 8030 * @returns {Array} Returns the array of property names. | |
| 8031 */ | |
| 8032 function nativeKeysIn(object) { | |
| 8033 var result = []; | |
| 8034 if (object != null) { | |
| 8035 for (var key in Object(object)) { | |
| 8036 result.push(key); | |
| 8037 } | |
| 8038 } | |
| 8039 return result; | |
| 8040 } | |
| 8041 | |
| 8042 /** | |
| 8043 * Converts `value` to a string using `Object.prototype.toString`. | |
| 8044 * | |
| 8045 * @private | |
| 8046 * @param {*} value The value to convert. | |
| 8047 * @returns {string} Returns the converted string. | |
| 8048 */ | |
| 8049 function objectToString(value) { | |
| 8050 return nativeObjectToString.call(value); | |
| 8051 } | |
| 8052 | |
| 8053 /** | |
| 8054 * A specialized version of `baseRest` which transforms the rest array. | |
| 8055 * | |
| 8056 * @private | |
| 8057 * @param {Function} func The function to apply a rest parameter to. | |
| 8058 * @param {number} [start=func.length-1] The start position of the rest parameter. | |
| 8059 * @param {Function} transform The rest array transform. | |
| 8060 * @returns {Function} Returns the new function. | |
| 8061 */ | |
| 8062 function overRest(func, start, transform) { | |
| 8063 start = nativeMax(start === undefined ? (func.length - 1) : start, 0); | |
| 8064 return function() { | |
| 8065 var args = arguments, | |
| 8066 index = -1, | |
| 8067 length = nativeMax(args.length - start, 0), | |
| 8068 array = Array(length); | |
| 8069 | |
| 8070 while (++index < length) { | |
| 8071 array[index] = args[start + index]; | |
| 8072 } | |
| 8073 index = -1; | |
| 8074 var otherArgs = Array(start + 1); | |
| 8075 while (++index < start) { | |
| 8076 otherArgs[index] = args[index]; | |
| 8077 } | |
| 8078 otherArgs[start] = transform(array); | |
| 8079 return apply(func, this, otherArgs); | |
| 8080 }; | |
| 8081 } | |
| 8082 | |
| 8083 /** | |
| 8084 * Gets the parent value at `path` of `object`. | |
| 8085 * | |
| 8086 * @private | |
| 8087 * @param {Object} object The object to query. | |
| 8088 * @param {Array} path The path to get the parent value of. | |
| 8089 * @returns {*} Returns the parent value. | |
| 8090 */ | |
| 8091 function parent(object, path) { | |
| 8092 return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1)); | |
| 8093 } | |
| 8094 | |
| 8095 /** | |
| 8096 * Reorder `array` according to the specified indexes where the element at | |
| 8097 * the first index is assigned as the first element, the element at | |
| 8098 * the second index is assigned as the second element, and so on. | |
| 8099 * | |
| 8100 * @private | |
| 8101 * @param {Array} array The array to reorder. | |
| 8102 * @param {Array} indexes The arranged array indexes. | |
| 8103 * @returns {Array} Returns `array`. | |
| 8104 */ | |
| 8105 function reorder(array, indexes) { | |
| 8106 var arrLength = array.length, | |
| 8107 length = nativeMin(indexes.length, arrLength), | |
| 8108 oldArray = copyArray(array); | |
| 8109 | |
| 8110 while (length--) { | |
| 8111 var index = indexes[length]; | |
| 8112 array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined; | |
| 8113 } | |
| 8114 return array; | |
| 8115 } | |
| 8116 | |
| 8117 /** | |
| 8118 * Gets the value at `key`, unless `key` is "__proto__" or "constructor". | |
| 8119 * | |
| 8120 * @private | |
| 8121 * @param {Object} object The object to query. | |
| 8122 * @param {string} key The key of the property to get. | |
| 8123 * @returns {*} Returns the property value. | |
| 8124 */ | |
| 8125 function safeGet(object, key) { | |
| 8126 if (key === 'constructor' && typeof object[key] === 'function') { | |
| 8127 return; | |
| 8128 } | |
| 8129 | |
| 8130 if (key == '__proto__') { | |
| 8131 return; | |
| 8132 } | |
| 8133 | |
| 8134 return object[key]; | |
| 8135 } | |
| 8136 | |
| 8137 /** | |
| 8138 * Sets metadata for `func`. | |
| 8139 * | |
| 8140 * **Note:** If this function becomes hot, i.e. is invoked a lot in a short | |
| 8141 * period of time, it will trip its breaker and transition to an identity | |
| 8142 * function to avoid garbage collection pauses in V8. See | |
| 8143 * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070) | |
| 8144 * for more details. | |
| 8145 * | |
| 8146 * @private | |
| 8147 * @param {Function} func The function to associate metadata with. | |
| 8148 * @param {*} data The metadata. | |
| 8149 * @returns {Function} Returns `func`. | |
| 8150 */ | |
| 8151 var setData = shortOut(baseSetData); | |
| 8152 | |
| 8153 /** | |
| 8154 * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout). | |
| 8155 * | |
| 8156 * @private | |
| 8157 * @param {Function} func The function to delay. | |
| 8158 * @param {number} wait The number of milliseconds to delay invocation. | |
| 8159 * @returns {number|Object} Returns the timer id or timeout object. | |
| 8160 */ | |
| 8161 var setTimeout = ctxSetTimeout || function(func, wait) { | |
| 8162 return root.setTimeout(func, wait); | |
| 8163 }; | |
| 8164 | |
| 8165 /** | |
| 8166 * Sets the `toString` method of `func` to return `string`. | |
| 8167 * | |
| 8168 * @private | |
| 8169 * @param {Function} func The function to modify. | |
| 8170 * @param {Function} string The `toString` result. | |
| 8171 * @returns {Function} Returns `func`. | |
| 8172 */ | |
| 8173 var setToString = shortOut(baseSetToString); | |
| 8174 | |
| 8175 /** | |
| 8176 * Sets the `toString` method of `wrapper` to mimic the source of `reference` | |
| 8177 * with wrapper details in a comment at the top of the source body. | |
| 8178 * | |
| 8179 * @private | |
| 8180 * @param {Function} wrapper The function to modify. | |
| 8181 * @param {Function} reference The reference function. | |
| 8182 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. | |
| 8183 * @returns {Function} Returns `wrapper`. | |
| 8184 */ | |
| 8185 function setWrapToString(wrapper, reference, bitmask) { | |
| 8186 var source = (reference + ''); | |
| 8187 return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask))); | |
| 8188 } | |
| 8189 | |
| 8190 /** | |
| 8191 * Creates a function that'll short out and invoke `identity` instead | |
| 8192 * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN` | |
| 8193 * milliseconds. | |
| 8194 * | |
| 8195 * @private | |
| 8196 * @param {Function} func The function to restrict. | |
| 8197 * @returns {Function} Returns the new shortable function. | |
| 8198 */ | |
| 8199 function shortOut(func) { | |
| 8200 var count = 0, | |
| 8201 lastCalled = 0; | |
| 8202 | |
| 8203 return function() { | |
| 8204 var stamp = nativeNow(), | |
| 8205 remaining = HOT_SPAN - (stamp - lastCalled); | |
| 8206 | |
| 8207 lastCalled = stamp; | |
| 8208 if (remaining > 0) { | |
| 8209 if (++count >= HOT_COUNT) { | |
| 8210 return arguments[0]; | |
| 8211 } | |
| 8212 } else { | |
| 8213 count = 0; | |
| 8214 } | |
| 8215 return func.apply(undefined, arguments); | |
| 8216 }; | |
| 8217 } | |
| 8218 | |
| 8219 /** | |
| 8220 * A specialized version of `_.shuffle` which mutates and sets the size of `array`. | |
| 8221 * | |
| 8222 * @private | |
| 8223 * @param {Array} array The array to shuffle. | |
| 8224 * @param {number} [size=array.length] The size of `array`. | |
| 8225 * @returns {Array} Returns `array`. | |
| 8226 */ | |
| 8227 function shuffleSelf(array, size) { | |
| 8228 var index = -1, | |
| 8229 length = array.length, | |
| 8230 lastIndex = length - 1; | |
| 8231 | |
| 8232 size = size === undefined ? length : size; | |
| 8233 while (++index < size) { | |
| 8234 var rand = baseRandom(index, lastIndex), | |
| 8235 value = array[rand]; | |
| 8236 | |
| 8237 array[rand] = array[index]; | |
| 8238 array[index] = value; | |
| 8239 } | |
| 8240 array.length = size; | |
| 8241 return array; | |
| 8242 } | |
| 8243 | |
| 8244 /** | |
| 8245 * Converts `string` to a property path array. | |
| 8246 * | |
| 8247 * @private | |
| 8248 * @param {string} string The string to convert. | |
| 8249 * @returns {Array} Returns the property path array. | |
| 8250 */ | |
| 8251 var stringToPath = memoizeCapped(function(string) { | |
| 8252 var result = []; | |
| 8253 if (string.charCodeAt(0) === 46 /* . */) { | |
| 8254 result.push(''); | |
| 8255 } | |
| 8256 string.replace(rePropName, function(match, number, quote, subString) { | |
| 8257 result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match)); | |
| 8258 }); | |
| 8259 return result; | |
| 8260 }); | |
| 8261 | |
| 8262 /** | |
| 8263 * Converts `value` to a string key if it's not a string or symbol. | |
| 8264 * | |
| 8265 * @private | |
| 8266 * @param {*} value The value to inspect. | |
| 8267 * @returns {string|symbol} Returns the key. | |
| 8268 */ | |
| 8269 function toKey(value) { | |
| 8270 if (typeof value == 'string' || isSymbol(value)) { | |
| 8271 return value; | |
| 8272 } | |
| 8273 var result = (value + ''); | |
| 8274 return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; | |
| 8275 } | |
| 8276 | |
| 8277 /** | |
| 8278 * Converts `func` to its source code. | |
| 8279 * | |
| 8280 * @private | |
| 8281 * @param {Function} func The function to convert. | |
| 8282 * @returns {string} Returns the source code. | |
| 8283 */ | |
| 8284 function toSource(func) { | |
| 8285 if (func != null) { | |
| 8286 try { | |
| 8287 return funcToString.call(func); | |
| 8288 } catch (e) {} | |
| 8289 try { | |
| 8290 return (func + ''); | |
| 8291 } catch (e) {} | |
| 8292 } | |
| 8293 return ''; | |
| 8294 } | |
| 8295 | |
| 8296 /** | |
| 8297 * Updates wrapper `details` based on `bitmask` flags. | |
| 8298 * | |
| 8299 * @private | |
| 8300 * @returns {Array} details The details to modify. | |
| 8301 * @param {number} bitmask The bitmask flags. See `createWrap` for more details. | |
| 8302 * @returns {Array} Returns `details`. | |
| 8303 */ | |
| 8304 function updateWrapDetails(details, bitmask) { | |
| 8305 arrayEach(wrapFlags, function(pair) { | |
| 8306 var value = '_.' + pair[0]; | |
| 8307 if ((bitmask & pair[1]) && !arrayIncludes(details, value)) { | |
| 8308 details.push(value); | |
| 8309 } | |
| 8310 }); | |
| 8311 return details.sort(); | |
| 8312 } | |
| 8313 | |
| 8314 /** | |
| 8315 * Creates a clone of `wrapper`. | |
| 8316 * | |
| 8317 * @private | |
| 8318 * @param {Object} wrapper The wrapper to clone. | |
| 8319 * @returns {Object} Returns the cloned wrapper. | |
| 8320 */ | |
| 8321 function wrapperClone(wrapper) { | |
| 8322 if (wrapper instanceof LazyWrapper) { | |
| 8323 return wrapper.clone(); | |
| 8324 } | |
| 8325 var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__); | |
| 8326 result.__actions__ = copyArray(wrapper.__actions__); | |
| 8327 result.__index__ = wrapper.__index__; | |
| 8328 result.__values__ = wrapper.__values__; | |
| 8329 return result; | |
| 8330 } | |
| 8331 | |
| 8332 /*------------------------------------------------------------------------*/ | |
| 8333 | |
| 8334 /** | |
| 8335 * Creates an array of elements split into groups the length of `size`. | |
| 8336 * If `array` can't be split evenly, the final chunk will be the remaining | |
| 8337 * elements. | |
| 8338 * | |
| 8339 * @static | |
| 8340 * @memberOf _ | |
| 8341 * @since 3.0.0 | |
| 8342 * @category Array | |
| 8343 * @param {Array} array The array to process. | |
| 8344 * @param {number} [size=1] The length of each chunk | |
| 8345 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 8346 * @returns {Array} Returns the new array of chunks. | |
| 8347 * @example | |
| 8348 * | |
| 8349 * _.chunk(['a', 'b', 'c', 'd'], 2); | |
| 8350 * // => [['a', 'b'], ['c', 'd']] | |
| 8351 * | |
| 8352 * _.chunk(['a', 'b', 'c', 'd'], 3); | |
| 8353 * // => [['a', 'b', 'c'], ['d']] | |
| 8354 */ | |
| 8355 function chunk(array, size, guard) { | |
| 8356 if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) { | |
| 8357 size = 1; | |
| 8358 } else { | |
| 8359 size = nativeMax(toInteger(size), 0); | |
| 8360 } | |
| 8361 var length = array == null ? 0 : array.length; | |
| 8362 if (!length || size < 1) { | |
| 8363 return []; | |
| 8364 } | |
| 8365 var index = 0, | |
| 8366 resIndex = 0, | |
| 8367 result = Array(nativeCeil(length / size)); | |
| 8368 | |
| 8369 while (index < length) { | |
| 8370 result[resIndex++] = baseSlice(array, index, (index += size)); | |
| 8371 } | |
| 8372 return result; | |
| 8373 } | |
| 8374 | |
| 8375 /** | |
| 8376 * Creates an array with all falsey values removed. The values `false`, `null`, | |
| 8377 * `0`, `""`, `undefined`, and `NaN` are falsey. | |
| 8378 * | |
| 8379 * @static | |
| 8380 * @memberOf _ | |
| 8381 * @since 0.1.0 | |
| 8382 * @category Array | |
| 8383 * @param {Array} array The array to compact. | |
| 8384 * @returns {Array} Returns the new array of filtered values. | |
| 8385 * @example | |
| 8386 * | |
| 8387 * _.compact([0, 1, false, 2, '', 3]); | |
| 8388 * // => [1, 2, 3] | |
| 8389 */ | |
| 8390 function compact(array) { | |
| 8391 var index = -1, | |
| 8392 length = array == null ? 0 : array.length, | |
| 8393 resIndex = 0, | |
| 8394 result = []; | |
| 8395 | |
| 8396 while (++index < length) { | |
| 8397 var value = array[index]; | |
| 8398 if (value) { | |
| 8399 result[resIndex++] = value; | |
| 8400 } | |
| 8401 } | |
| 8402 return result; | |
| 8403 } | |
| 8404 | |
| 8405 /** | |
| 8406 * Creates a new array concatenating `array` with any additional arrays | |
| 8407 * and/or values. | |
| 8408 * | |
| 8409 * @static | |
| 8410 * @memberOf _ | |
| 8411 * @since 4.0.0 | |
| 8412 * @category Array | |
| 8413 * @param {Array} array The array to concatenate. | |
| 8414 * @param {...*} [values] The values to concatenate. | |
| 8415 * @returns {Array} Returns the new concatenated array. | |
| 8416 * @example | |
| 8417 * | |
| 8418 * var array = [1]; | |
| 8419 * var other = _.concat(array, 2, [3], [[4]]); | |
| 8420 * | |
| 8421 * console.log(other); | |
| 8422 * // => [1, 2, 3, [4]] | |
| 8423 * | |
| 8424 * console.log(array); | |
| 8425 * // => [1] | |
| 8426 */ | |
| 8427 function concat() { | |
| 8428 var length = arguments.length; | |
| 8429 if (!length) { | |
| 8430 return []; | |
| 8431 } | |
| 8432 var args = Array(length - 1), | |
| 8433 array = arguments[0], | |
| 8434 index = length; | |
| 8435 | |
| 8436 while (index--) { | |
| 8437 args[index - 1] = arguments[index]; | |
| 8438 } | |
| 8439 return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1)); | |
| 8440 } | |
| 8441 | |
| 8442 /** | |
| 8443 * Creates an array of `array` values not included in the other given arrays | |
| 8444 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 8445 * for equality comparisons. The order and references of result values are | |
| 8446 * determined by the first array. | |
| 8447 * | |
| 8448 * **Note:** Unlike `_.pullAll`, this method returns a new array. | |
| 8449 * | |
| 8450 * @static | |
| 8451 * @memberOf _ | |
| 8452 * @since 0.1.0 | |
| 8453 * @category Array | |
| 8454 * @param {Array} array The array to inspect. | |
| 8455 * @param {...Array} [values] The values to exclude. | |
| 8456 * @returns {Array} Returns the new array of filtered values. | |
| 8457 * @see _.without, _.xor | |
| 8458 * @example | |
| 8459 * | |
| 8460 * _.difference([2, 1], [2, 3]); | |
| 8461 * // => [1] | |
| 8462 */ | |
| 8463 var difference = baseRest(function(array, values) { | |
| 8464 return isArrayLikeObject(array) | |
| 8465 ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) | |
| 8466 : []; | |
| 8467 }); | |
| 8468 | |
| 8469 /** | |
| 8470 * This method is like `_.difference` except that it accepts `iteratee` which | |
| 8471 * is invoked for each element of `array` and `values` to generate the criterion | |
| 8472 * by which they're compared. The order and references of result values are | |
| 8473 * determined by the first array. The iteratee is invoked with one argument: | |
| 8474 * (value). | |
| 8475 * | |
| 8476 * **Note:** Unlike `_.pullAllBy`, this method returns a new array. | |
| 8477 * | |
| 8478 * @static | |
| 8479 * @memberOf _ | |
| 8480 * @since 4.0.0 | |
| 8481 * @category Array | |
| 8482 * @param {Array} array The array to inspect. | |
| 8483 * @param {...Array} [values] The values to exclude. | |
| 8484 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 8485 * @returns {Array} Returns the new array of filtered values. | |
| 8486 * @example | |
| 8487 * | |
| 8488 * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor); | |
| 8489 * // => [1.2] | |
| 8490 * | |
| 8491 * // The `_.property` iteratee shorthand. | |
| 8492 * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x'); | |
| 8493 * // => [{ 'x': 2 }] | |
| 8494 */ | |
| 8495 var differenceBy = baseRest(function(array, values) { | |
| 8496 var iteratee = last(values); | |
| 8497 if (isArrayLikeObject(iteratee)) { | |
| 8498 iteratee = undefined; | |
| 8499 } | |
| 8500 return isArrayLikeObject(array) | |
| 8501 ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) | |
| 8502 : []; | |
| 8503 }); | |
| 8504 | |
| 8505 /** | |
| 8506 * This method is like `_.difference` except that it accepts `comparator` | |
| 8507 * which is invoked to compare elements of `array` to `values`. The order and | |
| 8508 * references of result values are determined by the first array. The comparator | |
| 8509 * is invoked with two arguments: (arrVal, othVal). | |
| 8510 * | |
| 8511 * **Note:** Unlike `_.pullAllWith`, this method returns a new array. | |
| 8512 * | |
| 8513 * @static | |
| 8514 * @memberOf _ | |
| 8515 * @since 4.0.0 | |
| 8516 * @category Array | |
| 8517 * @param {Array} array The array to inspect. | |
| 8518 * @param {...Array} [values] The values to exclude. | |
| 8519 * @param {Function} [comparator] The comparator invoked per element. | |
| 8520 * @returns {Array} Returns the new array of filtered values. | |
| 8521 * @example | |
| 8522 * | |
| 8523 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; | |
| 8524 * | |
| 8525 * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual); | |
| 8526 * // => [{ 'x': 2, 'y': 1 }] | |
| 8527 */ | |
| 8528 var differenceWith = baseRest(function(array, values) { | |
| 8529 var comparator = last(values); | |
| 8530 if (isArrayLikeObject(comparator)) { | |
| 8531 comparator = undefined; | |
| 8532 } | |
| 8533 return isArrayLikeObject(array) | |
| 8534 ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) | |
| 8535 : []; | |
| 8536 }); | |
| 8537 | |
| 8538 /** | |
| 8539 * Creates a slice of `array` with `n` elements dropped from the beginning. | |
| 8540 * | |
| 8541 * @static | |
| 8542 * @memberOf _ | |
| 8543 * @since 0.5.0 | |
| 8544 * @category Array | |
| 8545 * @param {Array} array The array to query. | |
| 8546 * @param {number} [n=1] The number of elements to drop. | |
| 8547 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 8548 * @returns {Array} Returns the slice of `array`. | |
| 8549 * @example | |
| 8550 * | |
| 8551 * _.drop([1, 2, 3]); | |
| 8552 * // => [2, 3] | |
| 8553 * | |
| 8554 * _.drop([1, 2, 3], 2); | |
| 8555 * // => [3] | |
| 8556 * | |
| 8557 * _.drop([1, 2, 3], 5); | |
| 8558 * // => [] | |
| 8559 * | |
| 8560 * _.drop([1, 2, 3], 0); | |
| 8561 * // => [1, 2, 3] | |
| 8562 */ | |
| 8563 function drop(array, n, guard) { | |
| 8564 var length = array == null ? 0 : array.length; | |
| 8565 if (!length) { | |
| 8566 return []; | |
| 8567 } | |
| 8568 n = (guard || n === undefined) ? 1 : toInteger(n); | |
| 8569 return baseSlice(array, n < 0 ? 0 : n, length); | |
| 8570 } | |
| 8571 | |
| 8572 /** | |
| 8573 * Creates a slice of `array` with `n` elements dropped from the end. | |
| 8574 * | |
| 8575 * @static | |
| 8576 * @memberOf _ | |
| 8577 * @since 3.0.0 | |
| 8578 * @category Array | |
| 8579 * @param {Array} array The array to query. | |
| 8580 * @param {number} [n=1] The number of elements to drop. | |
| 8581 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 8582 * @returns {Array} Returns the slice of `array`. | |
| 8583 * @example | |
| 8584 * | |
| 8585 * _.dropRight([1, 2, 3]); | |
| 8586 * // => [1, 2] | |
| 8587 * | |
| 8588 * _.dropRight([1, 2, 3], 2); | |
| 8589 * // => [1] | |
| 8590 * | |
| 8591 * _.dropRight([1, 2, 3], 5); | |
| 8592 * // => [] | |
| 8593 * | |
| 8594 * _.dropRight([1, 2, 3], 0); | |
| 8595 * // => [1, 2, 3] | |
| 8596 */ | |
| 8597 function dropRight(array, n, guard) { | |
| 8598 var length = array == null ? 0 : array.length; | |
| 8599 if (!length) { | |
| 8600 return []; | |
| 8601 } | |
| 8602 n = (guard || n === undefined) ? 1 : toInteger(n); | |
| 8603 n = length - n; | |
| 8604 return baseSlice(array, 0, n < 0 ? 0 : n); | |
| 8605 } | |
| 8606 | |
| 8607 /** | |
| 8608 * Creates a slice of `array` excluding elements dropped from the end. | |
| 8609 * Elements are dropped until `predicate` returns falsey. The predicate is | |
| 8610 * invoked with three arguments: (value, index, array). | |
| 8611 * | |
| 8612 * @static | |
| 8613 * @memberOf _ | |
| 8614 * @since 3.0.0 | |
| 8615 * @category Array | |
| 8616 * @param {Array} array The array to query. | |
| 8617 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 8618 * @returns {Array} Returns the slice of `array`. | |
| 8619 * @example | |
| 8620 * | |
| 8621 * var users = [ | |
| 8622 * { 'user': 'barney', 'active': true }, | |
| 8623 * { 'user': 'fred', 'active': false }, | |
| 8624 * { 'user': 'pebbles', 'active': false } | |
| 8625 * ]; | |
| 8626 * | |
| 8627 * _.dropRightWhile(users, function(o) { return !o.active; }); | |
| 8628 * // => objects for ['barney'] | |
| 8629 * | |
| 8630 * // The `_.matches` iteratee shorthand. | |
| 8631 * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false }); | |
| 8632 * // => objects for ['barney', 'fred'] | |
| 8633 * | |
| 8634 * // The `_.matchesProperty` iteratee shorthand. | |
| 8635 * _.dropRightWhile(users, ['active', false]); | |
| 8636 * // => objects for ['barney'] | |
| 8637 * | |
| 8638 * // The `_.property` iteratee shorthand. | |
| 8639 * _.dropRightWhile(users, 'active'); | |
| 8640 * // => objects for ['barney', 'fred', 'pebbles'] | |
| 8641 */ | |
| 8642 function dropRightWhile(array, predicate) { | |
| 8643 return (array && array.length) | |
| 8644 ? baseWhile(array, getIteratee(predicate, 3), true, true) | |
| 8645 : []; | |
| 8646 } | |
| 8647 | |
| 8648 /** | |
| 8649 * Creates a slice of `array` excluding elements dropped from the beginning. | |
| 8650 * Elements are dropped until `predicate` returns falsey. The predicate is | |
| 8651 * invoked with three arguments: (value, index, array). | |
| 8652 * | |
| 8653 * @static | |
| 8654 * @memberOf _ | |
| 8655 * @since 3.0.0 | |
| 8656 * @category Array | |
| 8657 * @param {Array} array The array to query. | |
| 8658 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 8659 * @returns {Array} Returns the slice of `array`. | |
| 8660 * @example | |
| 8661 * | |
| 8662 * var users = [ | |
| 8663 * { 'user': 'barney', 'active': false }, | |
| 8664 * { 'user': 'fred', 'active': false }, | |
| 8665 * { 'user': 'pebbles', 'active': true } | |
| 8666 * ]; | |
| 8667 * | |
| 8668 * _.dropWhile(users, function(o) { return !o.active; }); | |
| 8669 * // => objects for ['pebbles'] | |
| 8670 * | |
| 8671 * // The `_.matches` iteratee shorthand. | |
| 8672 * _.dropWhile(users, { 'user': 'barney', 'active': false }); | |
| 8673 * // => objects for ['fred', 'pebbles'] | |
| 8674 * | |
| 8675 * // The `_.matchesProperty` iteratee shorthand. | |
| 8676 * _.dropWhile(users, ['active', false]); | |
| 8677 * // => objects for ['pebbles'] | |
| 8678 * | |
| 8679 * // The `_.property` iteratee shorthand. | |
| 8680 * _.dropWhile(users, 'active'); | |
| 8681 * // => objects for ['barney', 'fred', 'pebbles'] | |
| 8682 */ | |
| 8683 function dropWhile(array, predicate) { | |
| 8684 return (array && array.length) | |
| 8685 ? baseWhile(array, getIteratee(predicate, 3), true) | |
| 8686 : []; | |
| 8687 } | |
| 8688 | |
| 8689 /** | |
| 8690 * Fills elements of `array` with `value` from `start` up to, but not | |
| 8691 * including, `end`. | |
| 8692 * | |
| 8693 * **Note:** This method mutates `array`. | |
| 8694 * | |
| 8695 * @static | |
| 8696 * @memberOf _ | |
| 8697 * @since 3.2.0 | |
| 8698 * @category Array | |
| 8699 * @param {Array} array The array to fill. | |
| 8700 * @param {*} value The value to fill `array` with. | |
| 8701 * @param {number} [start=0] The start position. | |
| 8702 * @param {number} [end=array.length] The end position. | |
| 8703 * @returns {Array} Returns `array`. | |
| 8704 * @example | |
| 8705 * | |
| 8706 * var array = [1, 2, 3]; | |
| 8707 * | |
| 8708 * _.fill(array, 'a'); | |
| 8709 * console.log(array); | |
| 8710 * // => ['a', 'a', 'a'] | |
| 8711 * | |
| 8712 * _.fill(Array(3), 2); | |
| 8713 * // => [2, 2, 2] | |
| 8714 * | |
| 8715 * _.fill([4, 6, 8, 10], '*', 1, 3); | |
| 8716 * // => [4, '*', '*', 10] | |
| 8717 */ | |
| 8718 function fill(array, value, start, end) { | |
| 8719 var length = array == null ? 0 : array.length; | |
| 8720 if (!length) { | |
| 8721 return []; | |
| 8722 } | |
| 8723 if (start && typeof start != 'number' && isIterateeCall(array, value, start)) { | |
| 8724 start = 0; | |
| 8725 end = length; | |
| 8726 } | |
| 8727 return baseFill(array, value, start, end); | |
| 8728 } | |
| 8729 | |
| 8730 /** | |
| 8731 * This method is like `_.find` except that it returns the index of the first | |
| 8732 * element `predicate` returns truthy for instead of the element itself. | |
| 8733 * | |
| 8734 * @static | |
| 8735 * @memberOf _ | |
| 8736 * @since 1.1.0 | |
| 8737 * @category Array | |
| 8738 * @param {Array} array The array to inspect. | |
| 8739 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 8740 * @param {number} [fromIndex=0] The index to search from. | |
| 8741 * @returns {number} Returns the index of the found element, else `-1`. | |
| 8742 * @example | |
| 8743 * | |
| 8744 * var users = [ | |
| 8745 * { 'user': 'barney', 'active': false }, | |
| 8746 * { 'user': 'fred', 'active': false }, | |
| 8747 * { 'user': 'pebbles', 'active': true } | |
| 8748 * ]; | |
| 8749 * | |
| 8750 * _.findIndex(users, function(o) { return o.user == 'barney'; }); | |
| 8751 * // => 0 | |
| 8752 * | |
| 8753 * // The `_.matches` iteratee shorthand. | |
| 8754 * _.findIndex(users, { 'user': 'fred', 'active': false }); | |
| 8755 * // => 1 | |
| 8756 * | |
| 8757 * // The `_.matchesProperty` iteratee shorthand. | |
| 8758 * _.findIndex(users, ['active', false]); | |
| 8759 * // => 0 | |
| 8760 * | |
| 8761 * // The `_.property` iteratee shorthand. | |
| 8762 * _.findIndex(users, 'active'); | |
| 8763 * // => 2 | |
| 8764 */ | |
| 8765 function findIndex(array, predicate, fromIndex) { | |
| 8766 var length = array == null ? 0 : array.length; | |
| 8767 if (!length) { | |
| 8768 return -1; | |
| 8769 } | |
| 8770 var index = fromIndex == null ? 0 : toInteger(fromIndex); | |
| 8771 if (index < 0) { | |
| 8772 index = nativeMax(length + index, 0); | |
| 8773 } | |
| 8774 return baseFindIndex(array, getIteratee(predicate, 3), index); | |
| 8775 } | |
| 8776 | |
| 8777 /** | |
| 8778 * This method is like `_.findIndex` except that it iterates over elements | |
| 8779 * of `collection` from right to left. | |
| 8780 * | |
| 8781 * @static | |
| 8782 * @memberOf _ | |
| 8783 * @since 2.0.0 | |
| 8784 * @category Array | |
| 8785 * @param {Array} array The array to inspect. | |
| 8786 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 8787 * @param {number} [fromIndex=array.length-1] The index to search from. | |
| 8788 * @returns {number} Returns the index of the found element, else `-1`. | |
| 8789 * @example | |
| 8790 * | |
| 8791 * var users = [ | |
| 8792 * { 'user': 'barney', 'active': true }, | |
| 8793 * { 'user': 'fred', 'active': false }, | |
| 8794 * { 'user': 'pebbles', 'active': false } | |
| 8795 * ]; | |
| 8796 * | |
| 8797 * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); | |
| 8798 * // => 2 | |
| 8799 * | |
| 8800 * // The `_.matches` iteratee shorthand. | |
| 8801 * _.findLastIndex(users, { 'user': 'barney', 'active': true }); | |
| 8802 * // => 0 | |
| 8803 * | |
| 8804 * // The `_.matchesProperty` iteratee shorthand. | |
| 8805 * _.findLastIndex(users, ['active', false]); | |
| 8806 * // => 2 | |
| 8807 * | |
| 8808 * // The `_.property` iteratee shorthand. | |
| 8809 * _.findLastIndex(users, 'active'); | |
| 8810 * // => 0 | |
| 8811 */ | |
| 8812 function findLastIndex(array, predicate, fromIndex) { | |
| 8813 var length = array == null ? 0 : array.length; | |
| 8814 if (!length) { | |
| 8815 return -1; | |
| 8816 } | |
| 8817 var index = length - 1; | |
| 8818 if (fromIndex !== undefined) { | |
| 8819 index = toInteger(fromIndex); | |
| 8820 index = fromIndex < 0 | |
| 8821 ? nativeMax(length + index, 0) | |
| 8822 : nativeMin(index, length - 1); | |
| 8823 } | |
| 8824 return baseFindIndex(array, getIteratee(predicate, 3), index, true); | |
| 8825 } | |
| 8826 | |
| 8827 /** | |
| 8828 * Flattens `array` a single level deep. | |
| 8829 * | |
| 8830 * @static | |
| 8831 * @memberOf _ | |
| 8832 * @since 0.1.0 | |
| 8833 * @category Array | |
| 8834 * @param {Array} array The array to flatten. | |
| 8835 * @returns {Array} Returns the new flattened array. | |
| 8836 * @example | |
| 8837 * | |
| 8838 * _.flatten([1, [2, [3, [4]], 5]]); | |
| 8839 * // => [1, 2, [3, [4]], 5] | |
| 8840 */ | |
| 8841 function flatten(array) { | |
| 8842 var length = array == null ? 0 : array.length; | |
| 8843 return length ? baseFlatten(array, 1) : []; | |
| 8844 } | |
| 8845 | |
| 8846 /** | |
| 8847 * Recursively flattens `array`. | |
| 8848 * | |
| 8849 * @static | |
| 8850 * @memberOf _ | |
| 8851 * @since 3.0.0 | |
| 8852 * @category Array | |
| 8853 * @param {Array} array The array to flatten. | |
| 8854 * @returns {Array} Returns the new flattened array. | |
| 8855 * @example | |
| 8856 * | |
| 8857 * _.flattenDeep([1, [2, [3, [4]], 5]]); | |
| 8858 * // => [1, 2, 3, 4, 5] | |
| 8859 */ | |
| 8860 function flattenDeep(array) { | |
| 8861 var length = array == null ? 0 : array.length; | |
| 8862 return length ? baseFlatten(array, INFINITY) : []; | |
| 8863 } | |
| 8864 | |
| 8865 /** | |
| 8866 * Recursively flatten `array` up to `depth` times. | |
| 8867 * | |
| 8868 * @static | |
| 8869 * @memberOf _ | |
| 8870 * @since 4.4.0 | |
| 8871 * @category Array | |
| 8872 * @param {Array} array The array to flatten. | |
| 8873 * @param {number} [depth=1] The maximum recursion depth. | |
| 8874 * @returns {Array} Returns the new flattened array. | |
| 8875 * @example | |
| 8876 * | |
| 8877 * var array = [1, [2, [3, [4]], 5]]; | |
| 8878 * | |
| 8879 * _.flattenDepth(array, 1); | |
| 8880 * // => [1, 2, [3, [4]], 5] | |
| 8881 * | |
| 8882 * _.flattenDepth(array, 2); | |
| 8883 * // => [1, 2, 3, [4], 5] | |
| 8884 */ | |
| 8885 function flattenDepth(array, depth) { | |
| 8886 var length = array == null ? 0 : array.length; | |
| 8887 if (!length) { | |
| 8888 return []; | |
| 8889 } | |
| 8890 depth = depth === undefined ? 1 : toInteger(depth); | |
| 8891 return baseFlatten(array, depth); | |
| 8892 } | |
| 8893 | |
| 8894 /** | |
| 8895 * The inverse of `_.toPairs`; this method returns an object composed | |
| 8896 * from key-value `pairs`. | |
| 8897 * | |
| 8898 * @static | |
| 8899 * @memberOf _ | |
| 8900 * @since 4.0.0 | |
| 8901 * @category Array | |
| 8902 * @param {Array} pairs The key-value pairs. | |
| 8903 * @returns {Object} Returns the new object. | |
| 8904 * @example | |
| 8905 * | |
| 8906 * _.fromPairs([['a', 1], ['b', 2]]); | |
| 8907 * // => { 'a': 1, 'b': 2 } | |
| 8908 */ | |
| 8909 function fromPairs(pairs) { | |
| 8910 var index = -1, | |
| 8911 length = pairs == null ? 0 : pairs.length, | |
| 8912 result = {}; | |
| 8913 | |
| 8914 while (++index < length) { | |
| 8915 var pair = pairs[index]; | |
| 8916 result[pair[0]] = pair[1]; | |
| 8917 } | |
| 8918 return result; | |
| 8919 } | |
| 8920 | |
| 8921 /** | |
| 8922 * Gets the first element of `array`. | |
| 8923 * | |
| 8924 * @static | |
| 8925 * @memberOf _ | |
| 8926 * @since 0.1.0 | |
| 8927 * @alias first | |
| 8928 * @category Array | |
| 8929 * @param {Array} array The array to query. | |
| 8930 * @returns {*} Returns the first element of `array`. | |
| 8931 * @example | |
| 8932 * | |
| 8933 * _.head([1, 2, 3]); | |
| 8934 * // => 1 | |
| 8935 * | |
| 8936 * _.head([]); | |
| 8937 * // => undefined | |
| 8938 */ | |
| 8939 function head(array) { | |
| 8940 return (array && array.length) ? array[0] : undefined; | |
| 8941 } | |
| 8942 | |
| 8943 /** | |
| 8944 * Gets the index at which the first occurrence of `value` is found in `array` | |
| 8945 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 8946 * for equality comparisons. If `fromIndex` is negative, it's used as the | |
| 8947 * offset from the end of `array`. | |
| 8948 * | |
| 8949 * @static | |
| 8950 * @memberOf _ | |
| 8951 * @since 0.1.0 | |
| 8952 * @category Array | |
| 8953 * @param {Array} array The array to inspect. | |
| 8954 * @param {*} value The value to search for. | |
| 8955 * @param {number} [fromIndex=0] The index to search from. | |
| 8956 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 8957 * @example | |
| 8958 * | |
| 8959 * _.indexOf([1, 2, 1, 2], 2); | |
| 8960 * // => 1 | |
| 8961 * | |
| 8962 * // Search from the `fromIndex`. | |
| 8963 * _.indexOf([1, 2, 1, 2], 2, 2); | |
| 8964 * // => 3 | |
| 8965 */ | |
| 8966 function indexOf(array, value, fromIndex) { | |
| 8967 var length = array == null ? 0 : array.length; | |
| 8968 if (!length) { | |
| 8969 return -1; | |
| 8970 } | |
| 8971 var index = fromIndex == null ? 0 : toInteger(fromIndex); | |
| 8972 if (index < 0) { | |
| 8973 index = nativeMax(length + index, 0); | |
| 8974 } | |
| 8975 return baseIndexOf(array, value, index); | |
| 8976 } | |
| 8977 | |
| 8978 /** | |
| 8979 * Gets all but the last element of `array`. | |
| 8980 * | |
| 8981 * @static | |
| 8982 * @memberOf _ | |
| 8983 * @since 0.1.0 | |
| 8984 * @category Array | |
| 8985 * @param {Array} array The array to query. | |
| 8986 * @returns {Array} Returns the slice of `array`. | |
| 8987 * @example | |
| 8988 * | |
| 8989 * _.initial([1, 2, 3]); | |
| 8990 * // => [1, 2] | |
| 8991 */ | |
| 8992 function initial(array) { | |
| 8993 var length = array == null ? 0 : array.length; | |
| 8994 return length ? baseSlice(array, 0, -1) : []; | |
| 8995 } | |
| 8996 | |
| 8997 /** | |
| 8998 * Creates an array of unique values that are included in all given arrays | |
| 8999 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 9000 * for equality comparisons. The order and references of result values are | |
| 9001 * determined by the first array. | |
| 9002 * | |
| 9003 * @static | |
| 9004 * @memberOf _ | |
| 9005 * @since 0.1.0 | |
| 9006 * @category Array | |
| 9007 * @param {...Array} [arrays] The arrays to inspect. | |
| 9008 * @returns {Array} Returns the new array of intersecting values. | |
| 9009 * @example | |
| 9010 * | |
| 9011 * _.intersection([2, 1], [2, 3]); | |
| 9012 * // => [2] | |
| 9013 */ | |
| 9014 var intersection = baseRest(function(arrays) { | |
| 9015 var mapped = arrayMap(arrays, castArrayLikeObject); | |
| 9016 return (mapped.length && mapped[0] === arrays[0]) | |
| 9017 ? baseIntersection(mapped) | |
| 9018 : []; | |
| 9019 }); | |
| 9020 | |
| 9021 /** | |
| 9022 * This method is like `_.intersection` except that it accepts `iteratee` | |
| 9023 * which is invoked for each element of each `arrays` to generate the criterion | |
| 9024 * by which they're compared. The order and references of result values are | |
| 9025 * determined by the first array. The iteratee is invoked with one argument: | |
| 9026 * (value). | |
| 9027 * | |
| 9028 * @static | |
| 9029 * @memberOf _ | |
| 9030 * @since 4.0.0 | |
| 9031 * @category Array | |
| 9032 * @param {...Array} [arrays] The arrays to inspect. | |
| 9033 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 9034 * @returns {Array} Returns the new array of intersecting values. | |
| 9035 * @example | |
| 9036 * | |
| 9037 * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor); | |
| 9038 * // => [2.1] | |
| 9039 * | |
| 9040 * // The `_.property` iteratee shorthand. | |
| 9041 * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); | |
| 9042 * // => [{ 'x': 1 }] | |
| 9043 */ | |
| 9044 var intersectionBy = baseRest(function(arrays) { | |
| 9045 var iteratee = last(arrays), | |
| 9046 mapped = arrayMap(arrays, castArrayLikeObject); | |
| 9047 | |
| 9048 if (iteratee === last(mapped)) { | |
| 9049 iteratee = undefined; | |
| 9050 } else { | |
| 9051 mapped.pop(); | |
| 9052 } | |
| 9053 return (mapped.length && mapped[0] === arrays[0]) | |
| 9054 ? baseIntersection(mapped, getIteratee(iteratee, 2)) | |
| 9055 : []; | |
| 9056 }); | |
| 9057 | |
| 9058 /** | |
| 9059 * This method is like `_.intersection` except that it accepts `comparator` | |
| 9060 * which is invoked to compare elements of `arrays`. The order and references | |
| 9061 * of result values are determined by the first array. The comparator is | |
| 9062 * invoked with two arguments: (arrVal, othVal). | |
| 9063 * | |
| 9064 * @static | |
| 9065 * @memberOf _ | |
| 9066 * @since 4.0.0 | |
| 9067 * @category Array | |
| 9068 * @param {...Array} [arrays] The arrays to inspect. | |
| 9069 * @param {Function} [comparator] The comparator invoked per element. | |
| 9070 * @returns {Array} Returns the new array of intersecting values. | |
| 9071 * @example | |
| 9072 * | |
| 9073 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; | |
| 9074 * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; | |
| 9075 * | |
| 9076 * _.intersectionWith(objects, others, _.isEqual); | |
| 9077 * // => [{ 'x': 1, 'y': 2 }] | |
| 9078 */ | |
| 9079 var intersectionWith = baseRest(function(arrays) { | |
| 9080 var comparator = last(arrays), | |
| 9081 mapped = arrayMap(arrays, castArrayLikeObject); | |
| 9082 | |
| 9083 comparator = typeof comparator == 'function' ? comparator : undefined; | |
| 9084 if (comparator) { | |
| 9085 mapped.pop(); | |
| 9086 } | |
| 9087 return (mapped.length && mapped[0] === arrays[0]) | |
| 9088 ? baseIntersection(mapped, undefined, comparator) | |
| 9089 : []; | |
| 9090 }); | |
| 9091 | |
| 9092 /** | |
| 9093 * Converts all elements in `array` into a string separated by `separator`. | |
| 9094 * | |
| 9095 * @static | |
| 9096 * @memberOf _ | |
| 9097 * @since 4.0.0 | |
| 9098 * @category Array | |
| 9099 * @param {Array} array The array to convert. | |
| 9100 * @param {string} [separator=','] The element separator. | |
| 9101 * @returns {string} Returns the joined string. | |
| 9102 * @example | |
| 9103 * | |
| 9104 * _.join(['a', 'b', 'c'], '~'); | |
| 9105 * // => 'a~b~c' | |
| 9106 */ | |
| 9107 function join(array, separator) { | |
| 9108 return array == null ? '' : nativeJoin.call(array, separator); | |
| 9109 } | |
| 9110 | |
| 9111 /** | |
| 9112 * Gets the last element of `array`. | |
| 9113 * | |
| 9114 * @static | |
| 9115 * @memberOf _ | |
| 9116 * @since 0.1.0 | |
| 9117 * @category Array | |
| 9118 * @param {Array} array The array to query. | |
| 9119 * @returns {*} Returns the last element of `array`. | |
| 9120 * @example | |
| 9121 * | |
| 9122 * _.last([1, 2, 3]); | |
| 9123 * // => 3 | |
| 9124 */ | |
| 9125 function last(array) { | |
| 9126 var length = array == null ? 0 : array.length; | |
| 9127 return length ? array[length - 1] : undefined; | |
| 9128 } | |
| 9129 | |
| 9130 /** | |
| 9131 * This method is like `_.indexOf` except that it iterates over elements of | |
| 9132 * `array` from right to left. | |
| 9133 * | |
| 9134 * @static | |
| 9135 * @memberOf _ | |
| 9136 * @since 0.1.0 | |
| 9137 * @category Array | |
| 9138 * @param {Array} array The array to inspect. | |
| 9139 * @param {*} value The value to search for. | |
| 9140 * @param {number} [fromIndex=array.length-1] The index to search from. | |
| 9141 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 9142 * @example | |
| 9143 * | |
| 9144 * _.lastIndexOf([1, 2, 1, 2], 2); | |
| 9145 * // => 3 | |
| 9146 * | |
| 9147 * // Search from the `fromIndex`. | |
| 9148 * _.lastIndexOf([1, 2, 1, 2], 2, 2); | |
| 9149 * // => 1 | |
| 9150 */ | |
| 9151 function lastIndexOf(array, value, fromIndex) { | |
| 9152 var length = array == null ? 0 : array.length; | |
| 9153 if (!length) { | |
| 9154 return -1; | |
| 9155 } | |
| 9156 var index = length; | |
| 9157 if (fromIndex !== undefined) { | |
| 9158 index = toInteger(fromIndex); | |
| 9159 index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1); | |
| 9160 } | |
| 9161 return value === value | |
| 9162 ? strictLastIndexOf(array, value, index) | |
| 9163 : baseFindIndex(array, baseIsNaN, index, true); | |
| 9164 } | |
| 9165 | |
| 9166 /** | |
| 9167 * Gets the element at index `n` of `array`. If `n` is negative, the nth | |
| 9168 * element from the end is returned. | |
| 9169 * | |
| 9170 * @static | |
| 9171 * @memberOf _ | |
| 9172 * @since 4.11.0 | |
| 9173 * @category Array | |
| 9174 * @param {Array} array The array to query. | |
| 9175 * @param {number} [n=0] The index of the element to return. | |
| 9176 * @returns {*} Returns the nth element of `array`. | |
| 9177 * @example | |
| 9178 * | |
| 9179 * var array = ['a', 'b', 'c', 'd']; | |
| 9180 * | |
| 9181 * _.nth(array, 1); | |
| 9182 * // => 'b' | |
| 9183 * | |
| 9184 * _.nth(array, -2); | |
| 9185 * // => 'c'; | |
| 9186 */ | |
| 9187 function nth(array, n) { | |
| 9188 return (array && array.length) ? baseNth(array, toInteger(n)) : undefined; | |
| 9189 } | |
| 9190 | |
| 9191 /** | |
| 9192 * Removes all given values from `array` using | |
| 9193 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 9194 * for equality comparisons. | |
| 9195 * | |
| 9196 * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove` | |
| 9197 * to remove elements from an array by predicate. | |
| 9198 * | |
| 9199 * @static | |
| 9200 * @memberOf _ | |
| 9201 * @since 2.0.0 | |
| 9202 * @category Array | |
| 9203 * @param {Array} array The array to modify. | |
| 9204 * @param {...*} [values] The values to remove. | |
| 9205 * @returns {Array} Returns `array`. | |
| 9206 * @example | |
| 9207 * | |
| 9208 * var array = ['a', 'b', 'c', 'a', 'b', 'c']; | |
| 9209 * | |
| 9210 * _.pull(array, 'a', 'c'); | |
| 9211 * console.log(array); | |
| 9212 * // => ['b', 'b'] | |
| 9213 */ | |
| 9214 var pull = baseRest(pullAll); | |
| 9215 | |
| 9216 /** | |
| 9217 * This method is like `_.pull` except that it accepts an array of values to remove. | |
| 9218 * | |
| 9219 * **Note:** Unlike `_.difference`, this method mutates `array`. | |
| 9220 * | |
| 9221 * @static | |
| 9222 * @memberOf _ | |
| 9223 * @since 4.0.0 | |
| 9224 * @category Array | |
| 9225 * @param {Array} array The array to modify. | |
| 9226 * @param {Array} values The values to remove. | |
| 9227 * @returns {Array} Returns `array`. | |
| 9228 * @example | |
| 9229 * | |
| 9230 * var array = ['a', 'b', 'c', 'a', 'b', 'c']; | |
| 9231 * | |
| 9232 * _.pullAll(array, ['a', 'c']); | |
| 9233 * console.log(array); | |
| 9234 * // => ['b', 'b'] | |
| 9235 */ | |
| 9236 function pullAll(array, values) { | |
| 9237 return (array && array.length && values && values.length) | |
| 9238 ? basePullAll(array, values) | |
| 9239 : array; | |
| 9240 } | |
| 9241 | |
| 9242 /** | |
| 9243 * This method is like `_.pullAll` except that it accepts `iteratee` which is | |
| 9244 * invoked for each element of `array` and `values` to generate the criterion | |
| 9245 * by which they're compared. The iteratee is invoked with one argument: (value). | |
| 9246 * | |
| 9247 * **Note:** Unlike `_.differenceBy`, this method mutates `array`. | |
| 9248 * | |
| 9249 * @static | |
| 9250 * @memberOf _ | |
| 9251 * @since 4.0.0 | |
| 9252 * @category Array | |
| 9253 * @param {Array} array The array to modify. | |
| 9254 * @param {Array} values The values to remove. | |
| 9255 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 9256 * @returns {Array} Returns `array`. | |
| 9257 * @example | |
| 9258 * | |
| 9259 * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }]; | |
| 9260 * | |
| 9261 * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x'); | |
| 9262 * console.log(array); | |
| 9263 * // => [{ 'x': 2 }] | |
| 9264 */ | |
| 9265 function pullAllBy(array, values, iteratee) { | |
| 9266 return (array && array.length && values && values.length) | |
| 9267 ? basePullAll(array, values, getIteratee(iteratee, 2)) | |
| 9268 : array; | |
| 9269 } | |
| 9270 | |
| 9271 /** | |
| 9272 * This method is like `_.pullAll` except that it accepts `comparator` which | |
| 9273 * is invoked to compare elements of `array` to `values`. The comparator is | |
| 9274 * invoked with two arguments: (arrVal, othVal). | |
| 9275 * | |
| 9276 * **Note:** Unlike `_.differenceWith`, this method mutates `array`. | |
| 9277 * | |
| 9278 * @static | |
| 9279 * @memberOf _ | |
| 9280 * @since 4.6.0 | |
| 9281 * @category Array | |
| 9282 * @param {Array} array The array to modify. | |
| 9283 * @param {Array} values The values to remove. | |
| 9284 * @param {Function} [comparator] The comparator invoked per element. | |
| 9285 * @returns {Array} Returns `array`. | |
| 9286 * @example | |
| 9287 * | |
| 9288 * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }]; | |
| 9289 * | |
| 9290 * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual); | |
| 9291 * console.log(array); | |
| 9292 * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }] | |
| 9293 */ | |
| 9294 function pullAllWith(array, values, comparator) { | |
| 9295 return (array && array.length && values && values.length) | |
| 9296 ? basePullAll(array, values, undefined, comparator) | |
| 9297 : array; | |
| 9298 } | |
| 9299 | |
| 9300 /** | |
| 9301 * Removes elements from `array` corresponding to `indexes` and returns an | |
| 9302 * array of removed elements. | |
| 9303 * | |
| 9304 * **Note:** Unlike `_.at`, this method mutates `array`. | |
| 9305 * | |
| 9306 * @static | |
| 9307 * @memberOf _ | |
| 9308 * @since 3.0.0 | |
| 9309 * @category Array | |
| 9310 * @param {Array} array The array to modify. | |
| 9311 * @param {...(number|number[])} [indexes] The indexes of elements to remove. | |
| 9312 * @returns {Array} Returns the new array of removed elements. | |
| 9313 * @example | |
| 9314 * | |
| 9315 * var array = ['a', 'b', 'c', 'd']; | |
| 9316 * var pulled = _.pullAt(array, [1, 3]); | |
| 9317 * | |
| 9318 * console.log(array); | |
| 9319 * // => ['a', 'c'] | |
| 9320 * | |
| 9321 * console.log(pulled); | |
| 9322 * // => ['b', 'd'] | |
| 9323 */ | |
| 9324 var pullAt = flatRest(function(array, indexes) { | |
| 9325 var length = array == null ? 0 : array.length, | |
| 9326 result = baseAt(array, indexes); | |
| 9327 | |
| 9328 basePullAt(array, arrayMap(indexes, function(index) { | |
| 9329 return isIndex(index, length) ? +index : index; | |
| 9330 }).sort(compareAscending)); | |
| 9331 | |
| 9332 return result; | |
| 9333 }); | |
| 9334 | |
| 9335 /** | |
| 9336 * Removes all elements from `array` that `predicate` returns truthy for | |
| 9337 * and returns an array of the removed elements. The predicate is invoked | |
| 9338 * with three arguments: (value, index, array). | |
| 9339 * | |
| 9340 * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull` | |
| 9341 * to pull elements from an array by value. | |
| 9342 * | |
| 9343 * @static | |
| 9344 * @memberOf _ | |
| 9345 * @since 2.0.0 | |
| 9346 * @category Array | |
| 9347 * @param {Array} array The array to modify. | |
| 9348 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 9349 * @returns {Array} Returns the new array of removed elements. | |
| 9350 * @example | |
| 9351 * | |
| 9352 * var array = [1, 2, 3, 4]; | |
| 9353 * var evens = _.remove(array, function(n) { | |
| 9354 * return n % 2 == 0; | |
| 9355 * }); | |
| 9356 * | |
| 9357 * console.log(array); | |
| 9358 * // => [1, 3] | |
| 9359 * | |
| 9360 * console.log(evens); | |
| 9361 * // => [2, 4] | |
| 9362 */ | |
| 9363 function remove(array, predicate) { | |
| 9364 var result = []; | |
| 9365 if (!(array && array.length)) { | |
| 9366 return result; | |
| 9367 } | |
| 9368 var index = -1, | |
| 9369 indexes = [], | |
| 9370 length = array.length; | |
| 9371 | |
| 9372 predicate = getIteratee(predicate, 3); | |
| 9373 while (++index < length) { | |
| 9374 var value = array[index]; | |
| 9375 if (predicate(value, index, array)) { | |
| 9376 result.push(value); | |
| 9377 indexes.push(index); | |
| 9378 } | |
| 9379 } | |
| 9380 basePullAt(array, indexes); | |
| 9381 return result; | |
| 9382 } | |
| 9383 | |
| 9384 /** | |
| 9385 * Reverses `array` so that the first element becomes the last, the second | |
| 9386 * element becomes the second to last, and so on. | |
| 9387 * | |
| 9388 * **Note:** This method mutates `array` and is based on | |
| 9389 * [`Array#reverse`](https://mdn.io/Array/reverse). | |
| 9390 * | |
| 9391 * @static | |
| 9392 * @memberOf _ | |
| 9393 * @since 4.0.0 | |
| 9394 * @category Array | |
| 9395 * @param {Array} array The array to modify. | |
| 9396 * @returns {Array} Returns `array`. | |
| 9397 * @example | |
| 9398 * | |
| 9399 * var array = [1, 2, 3]; | |
| 9400 * | |
| 9401 * _.reverse(array); | |
| 9402 * // => [3, 2, 1] | |
| 9403 * | |
| 9404 * console.log(array); | |
| 9405 * // => [3, 2, 1] | |
| 9406 */ | |
| 9407 function reverse(array) { | |
| 9408 return array == null ? array : nativeReverse.call(array); | |
| 9409 } | |
| 9410 | |
| 9411 /** | |
| 9412 * Creates a slice of `array` from `start` up to, but not including, `end`. | |
| 9413 * | |
| 9414 * **Note:** This method is used instead of | |
| 9415 * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are | |
| 9416 * returned. | |
| 9417 * | |
| 9418 * @static | |
| 9419 * @memberOf _ | |
| 9420 * @since 3.0.0 | |
| 9421 * @category Array | |
| 9422 * @param {Array} array The array to slice. | |
| 9423 * @param {number} [start=0] The start position. | |
| 9424 * @param {number} [end=array.length] The end position. | |
| 9425 * @returns {Array} Returns the slice of `array`. | |
| 9426 */ | |
| 9427 function slice(array, start, end) { | |
| 9428 var length = array == null ? 0 : array.length; | |
| 9429 if (!length) { | |
| 9430 return []; | |
| 9431 } | |
| 9432 if (end && typeof end != 'number' && isIterateeCall(array, start, end)) { | |
| 9433 start = 0; | |
| 9434 end = length; | |
| 9435 } | |
| 9436 else { | |
| 9437 start = start == null ? 0 : toInteger(start); | |
| 9438 end = end === undefined ? length : toInteger(end); | |
| 9439 } | |
| 9440 return baseSlice(array, start, end); | |
| 9441 } | |
| 9442 | |
| 9443 /** | |
| 9444 * Uses a binary search to determine the lowest index at which `value` | |
| 9445 * should be inserted into `array` in order to maintain its sort order. | |
| 9446 * | |
| 9447 * @static | |
| 9448 * @memberOf _ | |
| 9449 * @since 0.1.0 | |
| 9450 * @category Array | |
| 9451 * @param {Array} array The sorted array to inspect. | |
| 9452 * @param {*} value The value to evaluate. | |
| 9453 * @returns {number} Returns the index at which `value` should be inserted | |
| 9454 * into `array`. | |
| 9455 * @example | |
| 9456 * | |
| 9457 * _.sortedIndex([30, 50], 40); | |
| 9458 * // => 1 | |
| 9459 */ | |
| 9460 function sortedIndex(array, value) { | |
| 9461 return baseSortedIndex(array, value); | |
| 9462 } | |
| 9463 | |
| 9464 /** | |
| 9465 * This method is like `_.sortedIndex` except that it accepts `iteratee` | |
| 9466 * which is invoked for `value` and each element of `array` to compute their | |
| 9467 * sort ranking. The iteratee is invoked with one argument: (value). | |
| 9468 * | |
| 9469 * @static | |
| 9470 * @memberOf _ | |
| 9471 * @since 4.0.0 | |
| 9472 * @category Array | |
| 9473 * @param {Array} array The sorted array to inspect. | |
| 9474 * @param {*} value The value to evaluate. | |
| 9475 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 9476 * @returns {number} Returns the index at which `value` should be inserted | |
| 9477 * into `array`. | |
| 9478 * @example | |
| 9479 * | |
| 9480 * var objects = [{ 'x': 4 }, { 'x': 5 }]; | |
| 9481 * | |
| 9482 * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); | |
| 9483 * // => 0 | |
| 9484 * | |
| 9485 * // The `_.property` iteratee shorthand. | |
| 9486 * _.sortedIndexBy(objects, { 'x': 4 }, 'x'); | |
| 9487 * // => 0 | |
| 9488 */ | |
| 9489 function sortedIndexBy(array, value, iteratee) { | |
| 9490 return baseSortedIndexBy(array, value, getIteratee(iteratee, 2)); | |
| 9491 } | |
| 9492 | |
| 9493 /** | |
| 9494 * This method is like `_.indexOf` except that it performs a binary | |
| 9495 * search on a sorted `array`. | |
| 9496 * | |
| 9497 * @static | |
| 9498 * @memberOf _ | |
| 9499 * @since 4.0.0 | |
| 9500 * @category Array | |
| 9501 * @param {Array} array The array to inspect. | |
| 9502 * @param {*} value The value to search for. | |
| 9503 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 9504 * @example | |
| 9505 * | |
| 9506 * _.sortedIndexOf([4, 5, 5, 5, 6], 5); | |
| 9507 * // => 1 | |
| 9508 */ | |
| 9509 function sortedIndexOf(array, value) { | |
| 9510 var length = array == null ? 0 : array.length; | |
| 9511 if (length) { | |
| 9512 var index = baseSortedIndex(array, value); | |
| 9513 if (index < length && eq(array[index], value)) { | |
| 9514 return index; | |
| 9515 } | |
| 9516 } | |
| 9517 return -1; | |
| 9518 } | |
| 9519 | |
| 9520 /** | |
| 9521 * This method is like `_.sortedIndex` except that it returns the highest | |
| 9522 * index at which `value` should be inserted into `array` in order to | |
| 9523 * maintain its sort order. | |
| 9524 * | |
| 9525 * @static | |
| 9526 * @memberOf _ | |
| 9527 * @since 3.0.0 | |
| 9528 * @category Array | |
| 9529 * @param {Array} array The sorted array to inspect. | |
| 9530 * @param {*} value The value to evaluate. | |
| 9531 * @returns {number} Returns the index at which `value` should be inserted | |
| 9532 * into `array`. | |
| 9533 * @example | |
| 9534 * | |
| 9535 * _.sortedLastIndex([4, 5, 5, 5, 6], 5); | |
| 9536 * // => 4 | |
| 9537 */ | |
| 9538 function sortedLastIndex(array, value) { | |
| 9539 return baseSortedIndex(array, value, true); | |
| 9540 } | |
| 9541 | |
| 9542 /** | |
| 9543 * This method is like `_.sortedLastIndex` except that it accepts `iteratee` | |
| 9544 * which is invoked for `value` and each element of `array` to compute their | |
| 9545 * sort ranking. The iteratee is invoked with one argument: (value). | |
| 9546 * | |
| 9547 * @static | |
| 9548 * @memberOf _ | |
| 9549 * @since 4.0.0 | |
| 9550 * @category Array | |
| 9551 * @param {Array} array The sorted array to inspect. | |
| 9552 * @param {*} value The value to evaluate. | |
| 9553 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 9554 * @returns {number} Returns the index at which `value` should be inserted | |
| 9555 * into `array`. | |
| 9556 * @example | |
| 9557 * | |
| 9558 * var objects = [{ 'x': 4 }, { 'x': 5 }]; | |
| 9559 * | |
| 9560 * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); | |
| 9561 * // => 1 | |
| 9562 * | |
| 9563 * // The `_.property` iteratee shorthand. | |
| 9564 * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x'); | |
| 9565 * // => 1 | |
| 9566 */ | |
| 9567 function sortedLastIndexBy(array, value, iteratee) { | |
| 9568 return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true); | |
| 9569 } | |
| 9570 | |
| 9571 /** | |
| 9572 * This method is like `_.lastIndexOf` except that it performs a binary | |
| 9573 * search on a sorted `array`. | |
| 9574 * | |
| 9575 * @static | |
| 9576 * @memberOf _ | |
| 9577 * @since 4.0.0 | |
| 9578 * @category Array | |
| 9579 * @param {Array} array The array to inspect. | |
| 9580 * @param {*} value The value to search for. | |
| 9581 * @returns {number} Returns the index of the matched value, else `-1`. | |
| 9582 * @example | |
| 9583 * | |
| 9584 * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5); | |
| 9585 * // => 3 | |
| 9586 */ | |
| 9587 function sortedLastIndexOf(array, value) { | |
| 9588 var length = array == null ? 0 : array.length; | |
| 9589 if (length) { | |
| 9590 var index = baseSortedIndex(array, value, true) - 1; | |
| 9591 if (eq(array[index], value)) { | |
| 9592 return index; | |
| 9593 } | |
| 9594 } | |
| 9595 return -1; | |
| 9596 } | |
| 9597 | |
| 9598 /** | |
| 9599 * This method is like `_.uniq` except that it's designed and optimized | |
| 9600 * for sorted arrays. | |
| 9601 * | |
| 9602 * @static | |
| 9603 * @memberOf _ | |
| 9604 * @since 4.0.0 | |
| 9605 * @category Array | |
| 9606 * @param {Array} array The array to inspect. | |
| 9607 * @returns {Array} Returns the new duplicate free array. | |
| 9608 * @example | |
| 9609 * | |
| 9610 * _.sortedUniq([1, 1, 2]); | |
| 9611 * // => [1, 2] | |
| 9612 */ | |
| 9613 function sortedUniq(array) { | |
| 9614 return (array && array.length) | |
| 9615 ? baseSortedUniq(array) | |
| 9616 : []; | |
| 9617 } | |
| 9618 | |
| 9619 /** | |
| 9620 * This method is like `_.uniqBy` except that it's designed and optimized | |
| 9621 * for sorted arrays. | |
| 9622 * | |
| 9623 * @static | |
| 9624 * @memberOf _ | |
| 9625 * @since 4.0.0 | |
| 9626 * @category Array | |
| 9627 * @param {Array} array The array to inspect. | |
| 9628 * @param {Function} [iteratee] The iteratee invoked per element. | |
| 9629 * @returns {Array} Returns the new duplicate free array. | |
| 9630 * @example | |
| 9631 * | |
| 9632 * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor); | |
| 9633 * // => [1.1, 2.3] | |
| 9634 */ | |
| 9635 function sortedUniqBy(array, iteratee) { | |
| 9636 return (array && array.length) | |
| 9637 ? baseSortedUniq(array, getIteratee(iteratee, 2)) | |
| 9638 : []; | |
| 9639 } | |
| 9640 | |
| 9641 /** | |
| 9642 * Gets all but the first element of `array`. | |
| 9643 * | |
| 9644 * @static | |
| 9645 * @memberOf _ | |
| 9646 * @since 4.0.0 | |
| 9647 * @category Array | |
| 9648 * @param {Array} array The array to query. | |
| 9649 * @returns {Array} Returns the slice of `array`. | |
| 9650 * @example | |
| 9651 * | |
| 9652 * _.tail([1, 2, 3]); | |
| 9653 * // => [2, 3] | |
| 9654 */ | |
| 9655 function tail(array) { | |
| 9656 var length = array == null ? 0 : array.length; | |
| 9657 return length ? baseSlice(array, 1, length) : []; | |
| 9658 } | |
| 9659 | |
| 9660 /** | |
| 9661 * Creates a slice of `array` with `n` elements taken from the beginning. | |
| 9662 * | |
| 9663 * @static | |
| 9664 * @memberOf _ | |
| 9665 * @since 0.1.0 | |
| 9666 * @category Array | |
| 9667 * @param {Array} array The array to query. | |
| 9668 * @param {number} [n=1] The number of elements to take. | |
| 9669 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 9670 * @returns {Array} Returns the slice of `array`. | |
| 9671 * @example | |
| 9672 * | |
| 9673 * _.take([1, 2, 3]); | |
| 9674 * // => [1] | |
| 9675 * | |
| 9676 * _.take([1, 2, 3], 2); | |
| 9677 * // => [1, 2] | |
| 9678 * | |
| 9679 * _.take([1, 2, 3], 5); | |
| 9680 * // => [1, 2, 3] | |
| 9681 * | |
| 9682 * _.take([1, 2, 3], 0); | |
| 9683 * // => [] | |
| 9684 */ | |
| 9685 function take(array, n, guard) { | |
| 9686 if (!(array && array.length)) { | |
| 9687 return []; | |
| 9688 } | |
| 9689 n = (guard || n === undefined) ? 1 : toInteger(n); | |
| 9690 return baseSlice(array, 0, n < 0 ? 0 : n); | |
| 9691 } | |
| 9692 | |
| 9693 /** | |
| 9694 * Creates a slice of `array` with `n` elements taken from the end. | |
| 9695 * | |
| 9696 * @static | |
| 9697 * @memberOf _ | |
| 9698 * @since 3.0.0 | |
| 9699 * @category Array | |
| 9700 * @param {Array} array The array to query. | |
| 9701 * @param {number} [n=1] The number of elements to take. | |
| 9702 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 9703 * @returns {Array} Returns the slice of `array`. | |
| 9704 * @example | |
| 9705 * | |
| 9706 * _.takeRight([1, 2, 3]); | |
| 9707 * // => [3] | |
| 9708 * | |
| 9709 * _.takeRight([1, 2, 3], 2); | |
| 9710 * // => [2, 3] | |
| 9711 * | |
| 9712 * _.takeRight([1, 2, 3], 5); | |
| 9713 * // => [1, 2, 3] | |
| 9714 * | |
| 9715 * _.takeRight([1, 2, 3], 0); | |
| 9716 * // => [] | |
| 9717 */ | |
| 9718 function takeRight(array, n, guard) { | |
| 9719 var length = array == null ? 0 : array.length; | |
| 9720 if (!length) { | |
| 9721 return []; | |
| 9722 } | |
| 9723 n = (guard || n === undefined) ? 1 : toInteger(n); | |
| 9724 n = length - n; | |
| 9725 return baseSlice(array, n < 0 ? 0 : n, length); | |
| 9726 } | |
| 9727 | |
| 9728 /** | |
| 9729 * Creates a slice of `array` with elements taken from the end. Elements are | |
| 9730 * taken until `predicate` returns falsey. The predicate is invoked with | |
| 9731 * three arguments: (value, index, array). | |
| 9732 * | |
| 9733 * @static | |
| 9734 * @memberOf _ | |
| 9735 * @since 3.0.0 | |
| 9736 * @category Array | |
| 9737 * @param {Array} array The array to query. | |
| 9738 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 9739 * @returns {Array} Returns the slice of `array`. | |
| 9740 * @example | |
| 9741 * | |
| 9742 * var users = [ | |
| 9743 * { 'user': 'barney', 'active': true }, | |
| 9744 * { 'user': 'fred', 'active': false }, | |
| 9745 * { 'user': 'pebbles', 'active': false } | |
| 9746 * ]; | |
| 9747 * | |
| 9748 * _.takeRightWhile(users, function(o) { return !o.active; }); | |
| 9749 * // => objects for ['fred', 'pebbles'] | |
| 9750 * | |
| 9751 * // The `_.matches` iteratee shorthand. | |
| 9752 * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false }); | |
| 9753 * // => objects for ['pebbles'] | |
| 9754 * | |
| 9755 * // The `_.matchesProperty` iteratee shorthand. | |
| 9756 * _.takeRightWhile(users, ['active', false]); | |
| 9757 * // => objects for ['fred', 'pebbles'] | |
| 9758 * | |
| 9759 * // The `_.property` iteratee shorthand. | |
| 9760 * _.takeRightWhile(users, 'active'); | |
| 9761 * // => [] | |
| 9762 */ | |
| 9763 function takeRightWhile(array, predicate) { | |
| 9764 return (array && array.length) | |
| 9765 ? baseWhile(array, getIteratee(predicate, 3), false, true) | |
| 9766 : []; | |
| 9767 } | |
| 9768 | |
| 9769 /** | |
| 9770 * Creates a slice of `array` with elements taken from the beginning. Elements | |
| 9771 * are taken until `predicate` returns falsey. The predicate is invoked with | |
| 9772 * three arguments: (value, index, array). | |
| 9773 * | |
| 9774 * @static | |
| 9775 * @memberOf _ | |
| 9776 * @since 3.0.0 | |
| 9777 * @category Array | |
| 9778 * @param {Array} array The array to query. | |
| 9779 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 9780 * @returns {Array} Returns the slice of `array`. | |
| 9781 * @example | |
| 9782 * | |
| 9783 * var users = [ | |
| 9784 * { 'user': 'barney', 'active': false }, | |
| 9785 * { 'user': 'fred', 'active': false }, | |
| 9786 * { 'user': 'pebbles', 'active': true } | |
| 9787 * ]; | |
| 9788 * | |
| 9789 * _.takeWhile(users, function(o) { return !o.active; }); | |
| 9790 * // => objects for ['barney', 'fred'] | |
| 9791 * | |
| 9792 * // The `_.matches` iteratee shorthand. | |
| 9793 * _.takeWhile(users, { 'user': 'barney', 'active': false }); | |
| 9794 * // => objects for ['barney'] | |
| 9795 * | |
| 9796 * // The `_.matchesProperty` iteratee shorthand. | |
| 9797 * _.takeWhile(users, ['active', false]); | |
| 9798 * // => objects for ['barney', 'fred'] | |
| 9799 * | |
| 9800 * // The `_.property` iteratee shorthand. | |
| 9801 * _.takeWhile(users, 'active'); | |
| 9802 * // => [] | |
| 9803 */ | |
| 9804 function takeWhile(array, predicate) { | |
| 9805 return (array && array.length) | |
| 9806 ? baseWhile(array, getIteratee(predicate, 3)) | |
| 9807 : []; | |
| 9808 } | |
| 9809 | |
| 9810 /** | |
| 9811 * Creates an array of unique values, in order, from all given arrays using | |
| 9812 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 9813 * for equality comparisons. | |
| 9814 * | |
| 9815 * @static | |
| 9816 * @memberOf _ | |
| 9817 * @since 0.1.0 | |
| 9818 * @category Array | |
| 9819 * @param {...Array} [arrays] The arrays to inspect. | |
| 9820 * @returns {Array} Returns the new array of combined values. | |
| 9821 * @example | |
| 9822 * | |
| 9823 * _.union([2], [1, 2]); | |
| 9824 * // => [2, 1] | |
| 9825 */ | |
| 9826 var union = baseRest(function(arrays) { | |
| 9827 return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true)); | |
| 9828 }); | |
| 9829 | |
| 9830 /** | |
| 9831 * This method is like `_.union` except that it accepts `iteratee` which is | |
| 9832 * invoked for each element of each `arrays` to generate the criterion by | |
| 9833 * which uniqueness is computed. Result values are chosen from the first | |
| 9834 * array in which the value occurs. The iteratee is invoked with one argument: | |
| 9835 * (value). | |
| 9836 * | |
| 9837 * @static | |
| 9838 * @memberOf _ | |
| 9839 * @since 4.0.0 | |
| 9840 * @category Array | |
| 9841 * @param {...Array} [arrays] The arrays to inspect. | |
| 9842 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 9843 * @returns {Array} Returns the new array of combined values. | |
| 9844 * @example | |
| 9845 * | |
| 9846 * _.unionBy([2.1], [1.2, 2.3], Math.floor); | |
| 9847 * // => [2.1, 1.2] | |
| 9848 * | |
| 9849 * // The `_.property` iteratee shorthand. | |
| 9850 * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); | |
| 9851 * // => [{ 'x': 1 }, { 'x': 2 }] | |
| 9852 */ | |
| 9853 var unionBy = baseRest(function(arrays) { | |
| 9854 var iteratee = last(arrays); | |
| 9855 if (isArrayLikeObject(iteratee)) { | |
| 9856 iteratee = undefined; | |
| 9857 } | |
| 9858 return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)); | |
| 9859 }); | |
| 9860 | |
| 9861 /** | |
| 9862 * This method is like `_.union` except that it accepts `comparator` which | |
| 9863 * is invoked to compare elements of `arrays`. Result values are chosen from | |
| 9864 * the first array in which the value occurs. The comparator is invoked | |
| 9865 * with two arguments: (arrVal, othVal). | |
| 9866 * | |
| 9867 * @static | |
| 9868 * @memberOf _ | |
| 9869 * @since 4.0.0 | |
| 9870 * @category Array | |
| 9871 * @param {...Array} [arrays] The arrays to inspect. | |
| 9872 * @param {Function} [comparator] The comparator invoked per element. | |
| 9873 * @returns {Array} Returns the new array of combined values. | |
| 9874 * @example | |
| 9875 * | |
| 9876 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; | |
| 9877 * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; | |
| 9878 * | |
| 9879 * _.unionWith(objects, others, _.isEqual); | |
| 9880 * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] | |
| 9881 */ | |
| 9882 var unionWith = baseRest(function(arrays) { | |
| 9883 var comparator = last(arrays); | |
| 9884 comparator = typeof comparator == 'function' ? comparator : undefined; | |
| 9885 return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator); | |
| 9886 }); | |
| 9887 | |
| 9888 /** | |
| 9889 * Creates a duplicate-free version of an array, using | |
| 9890 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 9891 * for equality comparisons, in which only the first occurrence of each element | |
| 9892 * is kept. The order of result values is determined by the order they occur | |
| 9893 * in the array. | |
| 9894 * | |
| 9895 * @static | |
| 9896 * @memberOf _ | |
| 9897 * @since 0.1.0 | |
| 9898 * @category Array | |
| 9899 * @param {Array} array The array to inspect. | |
| 9900 * @returns {Array} Returns the new duplicate free array. | |
| 9901 * @example | |
| 9902 * | |
| 9903 * _.uniq([2, 1, 2]); | |
| 9904 * // => [2, 1] | |
| 9905 */ | |
| 9906 function uniq(array) { | |
| 9907 return (array && array.length) ? baseUniq(array) : []; | |
| 9908 } | |
| 9909 | |
| 9910 /** | |
| 9911 * This method is like `_.uniq` except that it accepts `iteratee` which is | |
| 9912 * invoked for each element in `array` to generate the criterion by which | |
| 9913 * uniqueness is computed. The order of result values is determined by the | |
| 9914 * order they occur in the array. The iteratee is invoked with one argument: | |
| 9915 * (value). | |
| 9916 * | |
| 9917 * @static | |
| 9918 * @memberOf _ | |
| 9919 * @since 4.0.0 | |
| 9920 * @category Array | |
| 9921 * @param {Array} array The array to inspect. | |
| 9922 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 9923 * @returns {Array} Returns the new duplicate free array. | |
| 9924 * @example | |
| 9925 * | |
| 9926 * _.uniqBy([2.1, 1.2, 2.3], Math.floor); | |
| 9927 * // => [2.1, 1.2] | |
| 9928 * | |
| 9929 * // The `_.property` iteratee shorthand. | |
| 9930 * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); | |
| 9931 * // => [{ 'x': 1 }, { 'x': 2 }] | |
| 9932 */ | |
| 9933 function uniqBy(array, iteratee) { | |
| 9934 return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : []; | |
| 9935 } | |
| 9936 | |
| 9937 /** | |
| 9938 * This method is like `_.uniq` except that it accepts `comparator` which | |
| 9939 * is invoked to compare elements of `array`. The order of result values is | |
| 9940 * determined by the order they occur in the array.The comparator is invoked | |
| 9941 * with two arguments: (arrVal, othVal). | |
| 9942 * | |
| 9943 * @static | |
| 9944 * @memberOf _ | |
| 9945 * @since 4.0.0 | |
| 9946 * @category Array | |
| 9947 * @param {Array} array The array to inspect. | |
| 9948 * @param {Function} [comparator] The comparator invoked per element. | |
| 9949 * @returns {Array} Returns the new duplicate free array. | |
| 9950 * @example | |
| 9951 * | |
| 9952 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }]; | |
| 9953 * | |
| 9954 * _.uniqWith(objects, _.isEqual); | |
| 9955 * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }] | |
| 9956 */ | |
| 9957 function uniqWith(array, comparator) { | |
| 9958 comparator = typeof comparator == 'function' ? comparator : undefined; | |
| 9959 return (array && array.length) ? baseUniq(array, undefined, comparator) : []; | |
| 9960 } | |
| 9961 | |
| 9962 /** | |
| 9963 * This method is like `_.zip` except that it accepts an array of grouped | |
| 9964 * elements and creates an array regrouping the elements to their pre-zip | |
| 9965 * configuration. | |
| 9966 * | |
| 9967 * @static | |
| 9968 * @memberOf _ | |
| 9969 * @since 1.2.0 | |
| 9970 * @category Array | |
| 9971 * @param {Array} array The array of grouped elements to process. | |
| 9972 * @returns {Array} Returns the new array of regrouped elements. | |
| 9973 * @example | |
| 9974 * | |
| 9975 * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]); | |
| 9976 * // => [['a', 1, true], ['b', 2, false]] | |
| 9977 * | |
| 9978 * _.unzip(zipped); | |
| 9979 * // => [['a', 'b'], [1, 2], [true, false]] | |
| 9980 */ | |
| 9981 function unzip(array) { | |
| 9982 if (!(array && array.length)) { | |
| 9983 return []; | |
| 9984 } | |
| 9985 var length = 0; | |
| 9986 array = arrayFilter(array, function(group) { | |
| 9987 if (isArrayLikeObject(group)) { | |
| 9988 length = nativeMax(group.length, length); | |
| 9989 return true; | |
| 9990 } | |
| 9991 }); | |
| 9992 return baseTimes(length, function(index) { | |
| 9993 return arrayMap(array, baseProperty(index)); | |
| 9994 }); | |
| 9995 } | |
| 9996 | |
| 9997 /** | |
| 9998 * This method is like `_.unzip` except that it accepts `iteratee` to specify | |
| 9999 * how regrouped values should be combined. The iteratee is invoked with the | |
| 10000 * elements of each group: (...group). | |
| 10001 * | |
| 10002 * @static | |
| 10003 * @memberOf _ | |
| 10004 * @since 3.8.0 | |
| 10005 * @category Array | |
| 10006 * @param {Array} array The array of grouped elements to process. | |
| 10007 * @param {Function} [iteratee=_.identity] The function to combine | |
| 10008 * regrouped values. | |
| 10009 * @returns {Array} Returns the new array of regrouped elements. | |
| 10010 * @example | |
| 10011 * | |
| 10012 * var zipped = _.zip([1, 2], [10, 20], [100, 200]); | |
| 10013 * // => [[1, 10, 100], [2, 20, 200]] | |
| 10014 * | |
| 10015 * _.unzipWith(zipped, _.add); | |
| 10016 * // => [3, 30, 300] | |
| 10017 */ | |
| 10018 function unzipWith(array, iteratee) { | |
| 10019 if (!(array && array.length)) { | |
| 10020 return []; | |
| 10021 } | |
| 10022 var result = unzip(array); | |
| 10023 if (iteratee == null) { | |
| 10024 return result; | |
| 10025 } | |
| 10026 return arrayMap(result, function(group) { | |
| 10027 return apply(iteratee, undefined, group); | |
| 10028 }); | |
| 10029 } | |
| 10030 | |
| 10031 /** | |
| 10032 * Creates an array excluding all given values using | |
| 10033 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 10034 * for equality comparisons. | |
| 10035 * | |
| 10036 * **Note:** Unlike `_.pull`, this method returns a new array. | |
| 10037 * | |
| 10038 * @static | |
| 10039 * @memberOf _ | |
| 10040 * @since 0.1.0 | |
| 10041 * @category Array | |
| 10042 * @param {Array} array The array to inspect. | |
| 10043 * @param {...*} [values] The values to exclude. | |
| 10044 * @returns {Array} Returns the new array of filtered values. | |
| 10045 * @see _.difference, _.xor | |
| 10046 * @example | |
| 10047 * | |
| 10048 * _.without([2, 1, 2, 3], 1, 2); | |
| 10049 * // => [3] | |
| 10050 */ | |
| 10051 var without = baseRest(function(array, values) { | |
| 10052 return isArrayLikeObject(array) | |
| 10053 ? baseDifference(array, values) | |
| 10054 : []; | |
| 10055 }); | |
| 10056 | |
| 10057 /** | |
| 10058 * Creates an array of unique values that is the | |
| 10059 * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference) | |
| 10060 * of the given arrays. The order of result values is determined by the order | |
| 10061 * they occur in the arrays. | |
| 10062 * | |
| 10063 * @static | |
| 10064 * @memberOf _ | |
| 10065 * @since 2.4.0 | |
| 10066 * @category Array | |
| 10067 * @param {...Array} [arrays] The arrays to inspect. | |
| 10068 * @returns {Array} Returns the new array of filtered values. | |
| 10069 * @see _.difference, _.without | |
| 10070 * @example | |
| 10071 * | |
| 10072 * _.xor([2, 1], [2, 3]); | |
| 10073 * // => [1, 3] | |
| 10074 */ | |
| 10075 var xor = baseRest(function(arrays) { | |
| 10076 return baseXor(arrayFilter(arrays, isArrayLikeObject)); | |
| 10077 }); | |
| 10078 | |
| 10079 /** | |
| 10080 * This method is like `_.xor` except that it accepts `iteratee` which is | |
| 10081 * invoked for each element of each `arrays` to generate the criterion by | |
| 10082 * which by which they're compared. The order of result values is determined | |
| 10083 * by the order they occur in the arrays. The iteratee is invoked with one | |
| 10084 * argument: (value). | |
| 10085 * | |
| 10086 * @static | |
| 10087 * @memberOf _ | |
| 10088 * @since 4.0.0 | |
| 10089 * @category Array | |
| 10090 * @param {...Array} [arrays] The arrays to inspect. | |
| 10091 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 10092 * @returns {Array} Returns the new array of filtered values. | |
| 10093 * @example | |
| 10094 * | |
| 10095 * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor); | |
| 10096 * // => [1.2, 3.4] | |
| 10097 * | |
| 10098 * // The `_.property` iteratee shorthand. | |
| 10099 * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); | |
| 10100 * // => [{ 'x': 2 }] | |
| 10101 */ | |
| 10102 var xorBy = baseRest(function(arrays) { | |
| 10103 var iteratee = last(arrays); | |
| 10104 if (isArrayLikeObject(iteratee)) { | |
| 10105 iteratee = undefined; | |
| 10106 } | |
| 10107 return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2)); | |
| 10108 }); | |
| 10109 | |
| 10110 /** | |
| 10111 * This method is like `_.xor` except that it accepts `comparator` which is | |
| 10112 * invoked to compare elements of `arrays`. The order of result values is | |
| 10113 * determined by the order they occur in the arrays. The comparator is invoked | |
| 10114 * with two arguments: (arrVal, othVal). | |
| 10115 * | |
| 10116 * @static | |
| 10117 * @memberOf _ | |
| 10118 * @since 4.0.0 | |
| 10119 * @category Array | |
| 10120 * @param {...Array} [arrays] The arrays to inspect. | |
| 10121 * @param {Function} [comparator] The comparator invoked per element. | |
| 10122 * @returns {Array} Returns the new array of filtered values. | |
| 10123 * @example | |
| 10124 * | |
| 10125 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; | |
| 10126 * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; | |
| 10127 * | |
| 10128 * _.xorWith(objects, others, _.isEqual); | |
| 10129 * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] | |
| 10130 */ | |
| 10131 var xorWith = baseRest(function(arrays) { | |
| 10132 var comparator = last(arrays); | |
| 10133 comparator = typeof comparator == 'function' ? comparator : undefined; | |
| 10134 return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator); | |
| 10135 }); | |
| 10136 | |
| 10137 /** | |
| 10138 * Creates an array of grouped elements, the first of which contains the | |
| 10139 * first elements of the given arrays, the second of which contains the | |
| 10140 * second elements of the given arrays, and so on. | |
| 10141 * | |
| 10142 * @static | |
| 10143 * @memberOf _ | |
| 10144 * @since 0.1.0 | |
| 10145 * @category Array | |
| 10146 * @param {...Array} [arrays] The arrays to process. | |
| 10147 * @returns {Array} Returns the new array of grouped elements. | |
| 10148 * @example | |
| 10149 * | |
| 10150 * _.zip(['a', 'b'], [1, 2], [true, false]); | |
| 10151 * // => [['a', 1, true], ['b', 2, false]] | |
| 10152 */ | |
| 10153 var zip = baseRest(unzip); | |
| 10154 | |
| 10155 /** | |
| 10156 * This method is like `_.fromPairs` except that it accepts two arrays, | |
| 10157 * one of property identifiers and one of corresponding values. | |
| 10158 * | |
| 10159 * @static | |
| 10160 * @memberOf _ | |
| 10161 * @since 0.4.0 | |
| 10162 * @category Array | |
| 10163 * @param {Array} [props=[]] The property identifiers. | |
| 10164 * @param {Array} [values=[]] The property values. | |
| 10165 * @returns {Object} Returns the new object. | |
| 10166 * @example | |
| 10167 * | |
| 10168 * _.zipObject(['a', 'b'], [1, 2]); | |
| 10169 * // => { 'a': 1, 'b': 2 } | |
| 10170 */ | |
| 10171 function zipObject(props, values) { | |
| 10172 return baseZipObject(props || [], values || [], assignValue); | |
| 10173 } | |
| 10174 | |
| 10175 /** | |
| 10176 * This method is like `_.zipObject` except that it supports property paths. | |
| 10177 * | |
| 10178 * @static | |
| 10179 * @memberOf _ | |
| 10180 * @since 4.1.0 | |
| 10181 * @category Array | |
| 10182 * @param {Array} [props=[]] The property identifiers. | |
| 10183 * @param {Array} [values=[]] The property values. | |
| 10184 * @returns {Object} Returns the new object. | |
| 10185 * @example | |
| 10186 * | |
| 10187 * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]); | |
| 10188 * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } } | |
| 10189 */ | |
| 10190 function zipObjectDeep(props, values) { | |
| 10191 return baseZipObject(props || [], values || [], baseSet); | |
| 10192 } | |
| 10193 | |
| 10194 /** | |
| 10195 * This method is like `_.zip` except that it accepts `iteratee` to specify | |
| 10196 * how grouped values should be combined. The iteratee is invoked with the | |
| 10197 * elements of each group: (...group). | |
| 10198 * | |
| 10199 * @static | |
| 10200 * @memberOf _ | |
| 10201 * @since 3.8.0 | |
| 10202 * @category Array | |
| 10203 * @param {...Array} [arrays] The arrays to process. | |
| 10204 * @param {Function} [iteratee=_.identity] The function to combine | |
| 10205 * grouped values. | |
| 10206 * @returns {Array} Returns the new array of grouped elements. | |
| 10207 * @example | |
| 10208 * | |
| 10209 * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) { | |
| 10210 * return a + b + c; | |
| 10211 * }); | |
| 10212 * // => [111, 222] | |
| 10213 */ | |
| 10214 var zipWith = baseRest(function(arrays) { | |
| 10215 var length = arrays.length, | |
| 10216 iteratee = length > 1 ? arrays[length - 1] : undefined; | |
| 10217 | |
| 10218 iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined; | |
| 10219 return unzipWith(arrays, iteratee); | |
| 10220 }); | |
| 10221 | |
| 10222 /*------------------------------------------------------------------------*/ | |
| 10223 | |
| 10224 /** | |
| 10225 * Creates a `lodash` wrapper instance that wraps `value` with explicit method | |
| 10226 * chain sequences enabled. The result of such sequences must be unwrapped | |
| 10227 * with `_#value`. | |
| 10228 * | |
| 10229 * @static | |
| 10230 * @memberOf _ | |
| 10231 * @since 1.3.0 | |
| 10232 * @category Seq | |
| 10233 * @param {*} value The value to wrap. | |
| 10234 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 10235 * @example | |
| 10236 * | |
| 10237 * var users = [ | |
| 10238 * { 'user': 'barney', 'age': 36 }, | |
| 10239 * { 'user': 'fred', 'age': 40 }, | |
| 10240 * { 'user': 'pebbles', 'age': 1 } | |
| 10241 * ]; | |
| 10242 * | |
| 10243 * var youngest = _ | |
| 10244 * .chain(users) | |
| 10245 * .sortBy('age') | |
| 10246 * .map(function(o) { | |
| 10247 * return o.user + ' is ' + o.age; | |
| 10248 * }) | |
| 10249 * .head() | |
| 10250 * .value(); | |
| 10251 * // => 'pebbles is 1' | |
| 10252 */ | |
| 10253 function chain(value) { | |
| 10254 var result = lodash(value); | |
| 10255 result.__chain__ = true; | |
| 10256 return result; | |
| 10257 } | |
| 10258 | |
| 10259 /** | |
| 10260 * This method invokes `interceptor` and returns `value`. The interceptor | |
| 10261 * is invoked with one argument; (value). The purpose of this method is to | |
| 10262 * "tap into" a method chain sequence in order to modify intermediate results. | |
| 10263 * | |
| 10264 * @static | |
| 10265 * @memberOf _ | |
| 10266 * @since 0.1.0 | |
| 10267 * @category Seq | |
| 10268 * @param {*} value The value to provide to `interceptor`. | |
| 10269 * @param {Function} interceptor The function to invoke. | |
| 10270 * @returns {*} Returns `value`. | |
| 10271 * @example | |
| 10272 * | |
| 10273 * _([1, 2, 3]) | |
| 10274 * .tap(function(array) { | |
| 10275 * // Mutate input array. | |
| 10276 * array.pop(); | |
| 10277 * }) | |
| 10278 * .reverse() | |
| 10279 * .value(); | |
| 10280 * // => [2, 1] | |
| 10281 */ | |
| 10282 function tap(value, interceptor) { | |
| 10283 interceptor(value); | |
| 10284 return value; | |
| 10285 } | |
| 10286 | |
| 10287 /** | |
| 10288 * This method is like `_.tap` except that it returns the result of `interceptor`. | |
| 10289 * The purpose of this method is to "pass thru" values replacing intermediate | |
| 10290 * results in a method chain sequence. | |
| 10291 * | |
| 10292 * @static | |
| 10293 * @memberOf _ | |
| 10294 * @since 3.0.0 | |
| 10295 * @category Seq | |
| 10296 * @param {*} value The value to provide to `interceptor`. | |
| 10297 * @param {Function} interceptor The function to invoke. | |
| 10298 * @returns {*} Returns the result of `interceptor`. | |
| 10299 * @example | |
| 10300 * | |
| 10301 * _(' abc ') | |
| 10302 * .chain() | |
| 10303 * .trim() | |
| 10304 * .thru(function(value) { | |
| 10305 * return [value]; | |
| 10306 * }) | |
| 10307 * .value(); | |
| 10308 * // => ['abc'] | |
| 10309 */ | |
| 10310 function thru(value, interceptor) { | |
| 10311 return interceptor(value); | |
| 10312 } | |
| 10313 | |
| 10314 /** | |
| 10315 * This method is the wrapper version of `_.at`. | |
| 10316 * | |
| 10317 * @name at | |
| 10318 * @memberOf _ | |
| 10319 * @since 1.0.0 | |
| 10320 * @category Seq | |
| 10321 * @param {...(string|string[])} [paths] The property paths to pick. | |
| 10322 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 10323 * @example | |
| 10324 * | |
| 10325 * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; | |
| 10326 * | |
| 10327 * _(object).at(['a[0].b.c', 'a[1]']).value(); | |
| 10328 * // => [3, 4] | |
| 10329 */ | |
| 10330 var wrapperAt = flatRest(function(paths) { | |
| 10331 var length = paths.length, | |
| 10332 start = length ? paths[0] : 0, | |
| 10333 value = this.__wrapped__, | |
| 10334 interceptor = function(object) { return baseAt(object, paths); }; | |
| 10335 | |
| 10336 if (length > 1 || this.__actions__.length || | |
| 10337 !(value instanceof LazyWrapper) || !isIndex(start)) { | |
| 10338 return this.thru(interceptor); | |
| 10339 } | |
| 10340 value = value.slice(start, +start + (length ? 1 : 0)); | |
| 10341 value.__actions__.push({ | |
| 10342 'func': thru, | |
| 10343 'args': [interceptor], | |
| 10344 'thisArg': undefined | |
| 10345 }); | |
| 10346 return new LodashWrapper(value, this.__chain__).thru(function(array) { | |
| 10347 if (length && !array.length) { | |
| 10348 array.push(undefined); | |
| 10349 } | |
| 10350 return array; | |
| 10351 }); | |
| 10352 }); | |
| 10353 | |
| 10354 /** | |
| 10355 * Creates a `lodash` wrapper instance with explicit method chain sequences enabled. | |
| 10356 * | |
| 10357 * @name chain | |
| 10358 * @memberOf _ | |
| 10359 * @since 0.1.0 | |
| 10360 * @category Seq | |
| 10361 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 10362 * @example | |
| 10363 * | |
| 10364 * var users = [ | |
| 10365 * { 'user': 'barney', 'age': 36 }, | |
| 10366 * { 'user': 'fred', 'age': 40 } | |
| 10367 * ]; | |
| 10368 * | |
| 10369 * // A sequence without explicit chaining. | |
| 10370 * _(users).head(); | |
| 10371 * // => { 'user': 'barney', 'age': 36 } | |
| 10372 * | |
| 10373 * // A sequence with explicit chaining. | |
| 10374 * _(users) | |
| 10375 * .chain() | |
| 10376 * .head() | |
| 10377 * .pick('user') | |
| 10378 * .value(); | |
| 10379 * // => { 'user': 'barney' } | |
| 10380 */ | |
| 10381 function wrapperChain() { | |
| 10382 return chain(this); | |
| 10383 } | |
| 10384 | |
| 10385 /** | |
| 10386 * Executes the chain sequence and returns the wrapped result. | |
| 10387 * | |
| 10388 * @name commit | |
| 10389 * @memberOf _ | |
| 10390 * @since 3.2.0 | |
| 10391 * @category Seq | |
| 10392 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 10393 * @example | |
| 10394 * | |
| 10395 * var array = [1, 2]; | |
| 10396 * var wrapped = _(array).push(3); | |
| 10397 * | |
| 10398 * console.log(array); | |
| 10399 * // => [1, 2] | |
| 10400 * | |
| 10401 * wrapped = wrapped.commit(); | |
| 10402 * console.log(array); | |
| 10403 * // => [1, 2, 3] | |
| 10404 * | |
| 10405 * wrapped.last(); | |
| 10406 * // => 3 | |
| 10407 * | |
| 10408 * console.log(array); | |
| 10409 * // => [1, 2, 3] | |
| 10410 */ | |
| 10411 function wrapperCommit() { | |
| 10412 return new LodashWrapper(this.value(), this.__chain__); | |
| 10413 } | |
| 10414 | |
| 10415 /** | |
| 10416 * Gets the next value on a wrapped object following the | |
| 10417 * [iterator protocol](https://mdn.io/iteration_protocols#iterator). | |
| 10418 * | |
| 10419 * @name next | |
| 10420 * @memberOf _ | |
| 10421 * @since 4.0.0 | |
| 10422 * @category Seq | |
| 10423 * @returns {Object} Returns the next iterator value. | |
| 10424 * @example | |
| 10425 * | |
| 10426 * var wrapped = _([1, 2]); | |
| 10427 * | |
| 10428 * wrapped.next(); | |
| 10429 * // => { 'done': false, 'value': 1 } | |
| 10430 * | |
| 10431 * wrapped.next(); | |
| 10432 * // => { 'done': false, 'value': 2 } | |
| 10433 * | |
| 10434 * wrapped.next(); | |
| 10435 * // => { 'done': true, 'value': undefined } | |
| 10436 */ | |
| 10437 function wrapperNext() { | |
| 10438 if (this.__values__ === undefined) { | |
| 10439 this.__values__ = toArray(this.value()); | |
| 10440 } | |
| 10441 var done = this.__index__ >= this.__values__.length, | |
| 10442 value = done ? undefined : this.__values__[this.__index__++]; | |
| 10443 | |
| 10444 return { 'done': done, 'value': value }; | |
| 10445 } | |
| 10446 | |
| 10447 /** | |
| 10448 * Enables the wrapper to be iterable. | |
| 10449 * | |
| 10450 * @name Symbol.iterator | |
| 10451 * @memberOf _ | |
| 10452 * @since 4.0.0 | |
| 10453 * @category Seq | |
| 10454 * @returns {Object} Returns the wrapper object. | |
| 10455 * @example | |
| 10456 * | |
| 10457 * var wrapped = _([1, 2]); | |
| 10458 * | |
| 10459 * wrapped[Symbol.iterator]() === wrapped; | |
| 10460 * // => true | |
| 10461 * | |
| 10462 * Array.from(wrapped); | |
| 10463 * // => [1, 2] | |
| 10464 */ | |
| 10465 function wrapperToIterator() { | |
| 10466 return this; | |
| 10467 } | |
| 10468 | |
| 10469 /** | |
| 10470 * Creates a clone of the chain sequence planting `value` as the wrapped value. | |
| 10471 * | |
| 10472 * @name plant | |
| 10473 * @memberOf _ | |
| 10474 * @since 3.2.0 | |
| 10475 * @category Seq | |
| 10476 * @param {*} value The value to plant. | |
| 10477 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 10478 * @example | |
| 10479 * | |
| 10480 * function square(n) { | |
| 10481 * return n * n; | |
| 10482 * } | |
| 10483 * | |
| 10484 * var wrapped = _([1, 2]).map(square); | |
| 10485 * var other = wrapped.plant([3, 4]); | |
| 10486 * | |
| 10487 * other.value(); | |
| 10488 * // => [9, 16] | |
| 10489 * | |
| 10490 * wrapped.value(); | |
| 10491 * // => [1, 4] | |
| 10492 */ | |
| 10493 function wrapperPlant(value) { | |
| 10494 var result, | |
| 10495 parent = this; | |
| 10496 | |
| 10497 while (parent instanceof baseLodash) { | |
| 10498 var clone = wrapperClone(parent); | |
| 10499 clone.__index__ = 0; | |
| 10500 clone.__values__ = undefined; | |
| 10501 if (result) { | |
| 10502 previous.__wrapped__ = clone; | |
| 10503 } else { | |
| 10504 result = clone; | |
| 10505 } | |
| 10506 var previous = clone; | |
| 10507 parent = parent.__wrapped__; | |
| 10508 } | |
| 10509 previous.__wrapped__ = value; | |
| 10510 return result; | |
| 10511 } | |
| 10512 | |
| 10513 /** | |
| 10514 * This method is the wrapper version of `_.reverse`. | |
| 10515 * | |
| 10516 * **Note:** This method mutates the wrapped array. | |
| 10517 * | |
| 10518 * @name reverse | |
| 10519 * @memberOf _ | |
| 10520 * @since 0.1.0 | |
| 10521 * @category Seq | |
| 10522 * @returns {Object} Returns the new `lodash` wrapper instance. | |
| 10523 * @example | |
| 10524 * | |
| 10525 * var array = [1, 2, 3]; | |
| 10526 * | |
| 10527 * _(array).reverse().value() | |
| 10528 * // => [3, 2, 1] | |
| 10529 * | |
| 10530 * console.log(array); | |
| 10531 * // => [3, 2, 1] | |
| 10532 */ | |
| 10533 function wrapperReverse() { | |
| 10534 var value = this.__wrapped__; | |
| 10535 if (value instanceof LazyWrapper) { | |
| 10536 var wrapped = value; | |
| 10537 if (this.__actions__.length) { | |
| 10538 wrapped = new LazyWrapper(this); | |
| 10539 } | |
| 10540 wrapped = wrapped.reverse(); | |
| 10541 wrapped.__actions__.push({ | |
| 10542 'func': thru, | |
| 10543 'args': [reverse], | |
| 10544 'thisArg': undefined | |
| 10545 }); | |
| 10546 return new LodashWrapper(wrapped, this.__chain__); | |
| 10547 } | |
| 10548 return this.thru(reverse); | |
| 10549 } | |
| 10550 | |
| 10551 /** | |
| 10552 * Executes the chain sequence to resolve the unwrapped value. | |
| 10553 * | |
| 10554 * @name value | |
| 10555 * @memberOf _ | |
| 10556 * @since 0.1.0 | |
| 10557 * @alias toJSON, valueOf | |
| 10558 * @category Seq | |
| 10559 * @returns {*} Returns the resolved unwrapped value. | |
| 10560 * @example | |
| 10561 * | |
| 10562 * _([1, 2, 3]).value(); | |
| 10563 * // => [1, 2, 3] | |
| 10564 */ | |
| 10565 function wrapperValue() { | |
| 10566 return baseWrapperValue(this.__wrapped__, this.__actions__); | |
| 10567 } | |
| 10568 | |
| 10569 /*------------------------------------------------------------------------*/ | |
| 10570 | |
| 10571 /** | |
| 10572 * Creates an object composed of keys generated from the results of running | |
| 10573 * each element of `collection` thru `iteratee`. The corresponding value of | |
| 10574 * each key is the number of times the key was returned by `iteratee`. The | |
| 10575 * iteratee is invoked with one argument: (value). | |
| 10576 * | |
| 10577 * @static | |
| 10578 * @memberOf _ | |
| 10579 * @since 0.5.0 | |
| 10580 * @category Collection | |
| 10581 * @param {Array|Object} collection The collection to iterate over. | |
| 10582 * @param {Function} [iteratee=_.identity] The iteratee to transform keys. | |
| 10583 * @returns {Object} Returns the composed aggregate object. | |
| 10584 * @example | |
| 10585 * | |
| 10586 * _.countBy([6.1, 4.2, 6.3], Math.floor); | |
| 10587 * // => { '4': 1, '6': 2 } | |
| 10588 * | |
| 10589 * // The `_.property` iteratee shorthand. | |
| 10590 * _.countBy(['one', 'two', 'three'], 'length'); | |
| 10591 * // => { '3': 2, '5': 1 } | |
| 10592 */ | |
| 10593 var countBy = createAggregator(function(result, value, key) { | |
| 10594 if (hasOwnProperty.call(result, key)) { | |
| 10595 ++result[key]; | |
| 10596 } else { | |
| 10597 baseAssignValue(result, key, 1); | |
| 10598 } | |
| 10599 }); | |
| 10600 | |
| 10601 /** | |
| 10602 * Checks if `predicate` returns truthy for **all** elements of `collection`. | |
| 10603 * Iteration is stopped once `predicate` returns falsey. The predicate is | |
| 10604 * invoked with three arguments: (value, index|key, collection). | |
| 10605 * | |
| 10606 * **Note:** This method returns `true` for | |
| 10607 * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because | |
| 10608 * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of | |
| 10609 * elements of empty collections. | |
| 10610 * | |
| 10611 * @static | |
| 10612 * @memberOf _ | |
| 10613 * @since 0.1.0 | |
| 10614 * @category Collection | |
| 10615 * @param {Array|Object} collection The collection to iterate over. | |
| 10616 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 10617 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 10618 * @returns {boolean} Returns `true` if all elements pass the predicate check, | |
| 10619 * else `false`. | |
| 10620 * @example | |
| 10621 * | |
| 10622 * _.every([true, 1, null, 'yes'], Boolean); | |
| 10623 * // => false | |
| 10624 * | |
| 10625 * var users = [ | |
| 10626 * { 'user': 'barney', 'age': 36, 'active': false }, | |
| 10627 * { 'user': 'fred', 'age': 40, 'active': false } | |
| 10628 * ]; | |
| 10629 * | |
| 10630 * // The `_.matches` iteratee shorthand. | |
| 10631 * _.every(users, { 'user': 'barney', 'active': false }); | |
| 10632 * // => false | |
| 10633 * | |
| 10634 * // The `_.matchesProperty` iteratee shorthand. | |
| 10635 * _.every(users, ['active', false]); | |
| 10636 * // => true | |
| 10637 * | |
| 10638 * // The `_.property` iteratee shorthand. | |
| 10639 * _.every(users, 'active'); | |
| 10640 * // => false | |
| 10641 */ | |
| 10642 function every(collection, predicate, guard) { | |
| 10643 var func = isArray(collection) ? arrayEvery : baseEvery; | |
| 10644 if (guard && isIterateeCall(collection, predicate, guard)) { | |
| 10645 predicate = undefined; | |
| 10646 } | |
| 10647 return func(collection, getIteratee(predicate, 3)); | |
| 10648 } | |
| 10649 | |
| 10650 /** | |
| 10651 * Iterates over elements of `collection`, returning an array of all elements | |
| 10652 * `predicate` returns truthy for. The predicate is invoked with three | |
| 10653 * arguments: (value, index|key, collection). | |
| 10654 * | |
| 10655 * **Note:** Unlike `_.remove`, this method returns a new array. | |
| 10656 * | |
| 10657 * @static | |
| 10658 * @memberOf _ | |
| 10659 * @since 0.1.0 | |
| 10660 * @category Collection | |
| 10661 * @param {Array|Object} collection The collection to iterate over. | |
| 10662 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 10663 * @returns {Array} Returns the new filtered array. | |
| 10664 * @see _.reject | |
| 10665 * @example | |
| 10666 * | |
| 10667 * var users = [ | |
| 10668 * { 'user': 'barney', 'age': 36, 'active': true }, | |
| 10669 * { 'user': 'fred', 'age': 40, 'active': false } | |
| 10670 * ]; | |
| 10671 * | |
| 10672 * _.filter(users, function(o) { return !o.active; }); | |
| 10673 * // => objects for ['fred'] | |
| 10674 * | |
| 10675 * // The `_.matches` iteratee shorthand. | |
| 10676 * _.filter(users, { 'age': 36, 'active': true }); | |
| 10677 * // => objects for ['barney'] | |
| 10678 * | |
| 10679 * // The `_.matchesProperty` iteratee shorthand. | |
| 10680 * _.filter(users, ['active', false]); | |
| 10681 * // => objects for ['fred'] | |
| 10682 * | |
| 10683 * // The `_.property` iteratee shorthand. | |
| 10684 * _.filter(users, 'active'); | |
| 10685 * // => objects for ['barney'] | |
| 10686 * | |
| 10687 * // Combining several predicates using `_.overEvery` or `_.overSome`. | |
| 10688 * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]])); | |
| 10689 * // => objects for ['fred', 'barney'] | |
| 10690 */ | |
| 10691 function filter(collection, predicate) { | |
| 10692 var func = isArray(collection) ? arrayFilter : baseFilter; | |
| 10693 return func(collection, getIteratee(predicate, 3)); | |
| 10694 } | |
| 10695 | |
| 10696 /** | |
| 10697 * Iterates over elements of `collection`, returning the first element | |
| 10698 * `predicate` returns truthy for. The predicate is invoked with three | |
| 10699 * arguments: (value, index|key, collection). | |
| 10700 * | |
| 10701 * @static | |
| 10702 * @memberOf _ | |
| 10703 * @since 0.1.0 | |
| 10704 * @category Collection | |
| 10705 * @param {Array|Object} collection The collection to inspect. | |
| 10706 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 10707 * @param {number} [fromIndex=0] The index to search from. | |
| 10708 * @returns {*} Returns the matched element, else `undefined`. | |
| 10709 * @example | |
| 10710 * | |
| 10711 * var users = [ | |
| 10712 * { 'user': 'barney', 'age': 36, 'active': true }, | |
| 10713 * { 'user': 'fred', 'age': 40, 'active': false }, | |
| 10714 * { 'user': 'pebbles', 'age': 1, 'active': true } | |
| 10715 * ]; | |
| 10716 * | |
| 10717 * _.find(users, function(o) { return o.age < 40; }); | |
| 10718 * // => object for 'barney' | |
| 10719 * | |
| 10720 * // The `_.matches` iteratee shorthand. | |
| 10721 * _.find(users, { 'age': 1, 'active': true }); | |
| 10722 * // => object for 'pebbles' | |
| 10723 * | |
| 10724 * // The `_.matchesProperty` iteratee shorthand. | |
| 10725 * _.find(users, ['active', false]); | |
| 10726 * // => object for 'fred' | |
| 10727 * | |
| 10728 * // The `_.property` iteratee shorthand. | |
| 10729 * _.find(users, 'active'); | |
| 10730 * // => object for 'barney' | |
| 10731 */ | |
| 10732 var find = createFind(findIndex); | |
| 10733 | |
| 10734 /** | |
| 10735 * This method is like `_.find` except that it iterates over elements of | |
| 10736 * `collection` from right to left. | |
| 10737 * | |
| 10738 * @static | |
| 10739 * @memberOf _ | |
| 10740 * @since 2.0.0 | |
| 10741 * @category Collection | |
| 10742 * @param {Array|Object} collection The collection to inspect. | |
| 10743 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 10744 * @param {number} [fromIndex=collection.length-1] The index to search from. | |
| 10745 * @returns {*} Returns the matched element, else `undefined`. | |
| 10746 * @example | |
| 10747 * | |
| 10748 * _.findLast([1, 2, 3, 4], function(n) { | |
| 10749 * return n % 2 == 1; | |
| 10750 * }); | |
| 10751 * // => 3 | |
| 10752 */ | |
| 10753 var findLast = createFind(findLastIndex); | |
| 10754 | |
| 10755 /** | |
| 10756 * Creates a flattened array of values by running each element in `collection` | |
| 10757 * thru `iteratee` and flattening the mapped results. The iteratee is invoked | |
| 10758 * with three arguments: (value, index|key, collection). | |
| 10759 * | |
| 10760 * @static | |
| 10761 * @memberOf _ | |
| 10762 * @since 4.0.0 | |
| 10763 * @category Collection | |
| 10764 * @param {Array|Object} collection The collection to iterate over. | |
| 10765 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10766 * @returns {Array} Returns the new flattened array. | |
| 10767 * @example | |
| 10768 * | |
| 10769 * function duplicate(n) { | |
| 10770 * return [n, n]; | |
| 10771 * } | |
| 10772 * | |
| 10773 * _.flatMap([1, 2], duplicate); | |
| 10774 * // => [1, 1, 2, 2] | |
| 10775 */ | |
| 10776 function flatMap(collection, iteratee) { | |
| 10777 return baseFlatten(map(collection, iteratee), 1); | |
| 10778 } | |
| 10779 | |
| 10780 /** | |
| 10781 * This method is like `_.flatMap` except that it recursively flattens the | |
| 10782 * mapped results. | |
| 10783 * | |
| 10784 * @static | |
| 10785 * @memberOf _ | |
| 10786 * @since 4.7.0 | |
| 10787 * @category Collection | |
| 10788 * @param {Array|Object} collection The collection to iterate over. | |
| 10789 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10790 * @returns {Array} Returns the new flattened array. | |
| 10791 * @example | |
| 10792 * | |
| 10793 * function duplicate(n) { | |
| 10794 * return [[[n, n]]]; | |
| 10795 * } | |
| 10796 * | |
| 10797 * _.flatMapDeep([1, 2], duplicate); | |
| 10798 * // => [1, 1, 2, 2] | |
| 10799 */ | |
| 10800 function flatMapDeep(collection, iteratee) { | |
| 10801 return baseFlatten(map(collection, iteratee), INFINITY); | |
| 10802 } | |
| 10803 | |
| 10804 /** | |
| 10805 * This method is like `_.flatMap` except that it recursively flattens the | |
| 10806 * mapped results up to `depth` times. | |
| 10807 * | |
| 10808 * @static | |
| 10809 * @memberOf _ | |
| 10810 * @since 4.7.0 | |
| 10811 * @category Collection | |
| 10812 * @param {Array|Object} collection The collection to iterate over. | |
| 10813 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10814 * @param {number} [depth=1] The maximum recursion depth. | |
| 10815 * @returns {Array} Returns the new flattened array. | |
| 10816 * @example | |
| 10817 * | |
| 10818 * function duplicate(n) { | |
| 10819 * return [[[n, n]]]; | |
| 10820 * } | |
| 10821 * | |
| 10822 * _.flatMapDepth([1, 2], duplicate, 2); | |
| 10823 * // => [[1, 1], [2, 2]] | |
| 10824 */ | |
| 10825 function flatMapDepth(collection, iteratee, depth) { | |
| 10826 depth = depth === undefined ? 1 : toInteger(depth); | |
| 10827 return baseFlatten(map(collection, iteratee), depth); | |
| 10828 } | |
| 10829 | |
| 10830 /** | |
| 10831 * Iterates over elements of `collection` and invokes `iteratee` for each element. | |
| 10832 * The iteratee is invoked with three arguments: (value, index|key, collection). | |
| 10833 * Iteratee functions may exit iteration early by explicitly returning `false`. | |
| 10834 * | |
| 10835 * **Note:** As with other "Collections" methods, objects with a "length" | |
| 10836 * property are iterated like arrays. To avoid this behavior use `_.forIn` | |
| 10837 * or `_.forOwn` for object iteration. | |
| 10838 * | |
| 10839 * @static | |
| 10840 * @memberOf _ | |
| 10841 * @since 0.1.0 | |
| 10842 * @alias each | |
| 10843 * @category Collection | |
| 10844 * @param {Array|Object} collection The collection to iterate over. | |
| 10845 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10846 * @returns {Array|Object} Returns `collection`. | |
| 10847 * @see _.forEachRight | |
| 10848 * @example | |
| 10849 * | |
| 10850 * _.forEach([1, 2], function(value) { | |
| 10851 * console.log(value); | |
| 10852 * }); | |
| 10853 * // => Logs `1` then `2`. | |
| 10854 * | |
| 10855 * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) { | |
| 10856 * console.log(key); | |
| 10857 * }); | |
| 10858 * // => Logs 'a' then 'b' (iteration order is not guaranteed). | |
| 10859 */ | |
| 10860 function forEach(collection, iteratee) { | |
| 10861 var func = isArray(collection) ? arrayEach : baseEach; | |
| 10862 return func(collection, getIteratee(iteratee, 3)); | |
| 10863 } | |
| 10864 | |
| 10865 /** | |
| 10866 * This method is like `_.forEach` except that it iterates over elements of | |
| 10867 * `collection` from right to left. | |
| 10868 * | |
| 10869 * @static | |
| 10870 * @memberOf _ | |
| 10871 * @since 2.0.0 | |
| 10872 * @alias eachRight | |
| 10873 * @category Collection | |
| 10874 * @param {Array|Object} collection The collection to iterate over. | |
| 10875 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 10876 * @returns {Array|Object} Returns `collection`. | |
| 10877 * @see _.forEach | |
| 10878 * @example | |
| 10879 * | |
| 10880 * _.forEachRight([1, 2], function(value) { | |
| 10881 * console.log(value); | |
| 10882 * }); | |
| 10883 * // => Logs `2` then `1`. | |
| 10884 */ | |
| 10885 function forEachRight(collection, iteratee) { | |
| 10886 var func = isArray(collection) ? arrayEachRight : baseEachRight; | |
| 10887 return func(collection, getIteratee(iteratee, 3)); | |
| 10888 } | |
| 10889 | |
| 10890 /** | |
| 10891 * Creates an object composed of keys generated from the results of running | |
| 10892 * each element of `collection` thru `iteratee`. The order of grouped values | |
| 10893 * is determined by the order they occur in `collection`. The corresponding | |
| 10894 * value of each key is an array of elements responsible for generating the | |
| 10895 * key. The iteratee is invoked with one argument: (value). | |
| 10896 * | |
| 10897 * @static | |
| 10898 * @memberOf _ | |
| 10899 * @since 0.1.0 | |
| 10900 * @category Collection | |
| 10901 * @param {Array|Object} collection The collection to iterate over. | |
| 10902 * @param {Function} [iteratee=_.identity] The iteratee to transform keys. | |
| 10903 * @returns {Object} Returns the composed aggregate object. | |
| 10904 * @example | |
| 10905 * | |
| 10906 * _.groupBy([6.1, 4.2, 6.3], Math.floor); | |
| 10907 * // => { '4': [4.2], '6': [6.1, 6.3] } | |
| 10908 * | |
| 10909 * // The `_.property` iteratee shorthand. | |
| 10910 * _.groupBy(['one', 'two', 'three'], 'length'); | |
| 10911 * // => { '3': ['one', 'two'], '5': ['three'] } | |
| 10912 */ | |
| 10913 var groupBy = createAggregator(function(result, value, key) { | |
| 10914 if (hasOwnProperty.call(result, key)) { | |
| 10915 result[key].push(value); | |
| 10916 } else { | |
| 10917 baseAssignValue(result, key, [value]); | |
| 10918 } | |
| 10919 }); | |
| 10920 | |
| 10921 /** | |
| 10922 * Checks if `value` is in `collection`. If `collection` is a string, it's | |
| 10923 * checked for a substring of `value`, otherwise | |
| 10924 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 10925 * is used for equality comparisons. If `fromIndex` is negative, it's used as | |
| 10926 * the offset from the end of `collection`. | |
| 10927 * | |
| 10928 * @static | |
| 10929 * @memberOf _ | |
| 10930 * @since 0.1.0 | |
| 10931 * @category Collection | |
| 10932 * @param {Array|Object|string} collection The collection to inspect. | |
| 10933 * @param {*} value The value to search for. | |
| 10934 * @param {number} [fromIndex=0] The index to search from. | |
| 10935 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. | |
| 10936 * @returns {boolean} Returns `true` if `value` is found, else `false`. | |
| 10937 * @example | |
| 10938 * | |
| 10939 * _.includes([1, 2, 3], 1); | |
| 10940 * // => true | |
| 10941 * | |
| 10942 * _.includes([1, 2, 3], 1, 2); | |
| 10943 * // => false | |
| 10944 * | |
| 10945 * _.includes({ 'a': 1, 'b': 2 }, 1); | |
| 10946 * // => true | |
| 10947 * | |
| 10948 * _.includes('abcd', 'bc'); | |
| 10949 * // => true | |
| 10950 */ | |
| 10951 function includes(collection, value, fromIndex, guard) { | |
| 10952 collection = isArrayLike(collection) ? collection : values(collection); | |
| 10953 fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0; | |
| 10954 | |
| 10955 var length = collection.length; | |
| 10956 if (fromIndex < 0) { | |
| 10957 fromIndex = nativeMax(length + fromIndex, 0); | |
| 10958 } | |
| 10959 return isString(collection) | |
| 10960 ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1) | |
| 10961 : (!!length && baseIndexOf(collection, value, fromIndex) > -1); | |
| 10962 } | |
| 10963 | |
| 10964 /** | |
| 10965 * Invokes the method at `path` of each element in `collection`, returning | |
| 10966 * an array of the results of each invoked method. Any additional arguments | |
| 10967 * are provided to each invoked method. If `path` is a function, it's invoked | |
| 10968 * for, and `this` bound to, each element in `collection`. | |
| 10969 * | |
| 10970 * @static | |
| 10971 * @memberOf _ | |
| 10972 * @since 4.0.0 | |
| 10973 * @category Collection | |
| 10974 * @param {Array|Object} collection The collection to iterate over. | |
| 10975 * @param {Array|Function|string} path The path of the method to invoke or | |
| 10976 * the function invoked per iteration. | |
| 10977 * @param {...*} [args] The arguments to invoke each method with. | |
| 10978 * @returns {Array} Returns the array of results. | |
| 10979 * @example | |
| 10980 * | |
| 10981 * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort'); | |
| 10982 * // => [[1, 5, 7], [1, 2, 3]] | |
| 10983 * | |
| 10984 * _.invokeMap([123, 456], String.prototype.split, ''); | |
| 10985 * // => [['1', '2', '3'], ['4', '5', '6']] | |
| 10986 */ | |
| 10987 var invokeMap = baseRest(function(collection, path, args) { | |
| 10988 var index = -1, | |
| 10989 isFunc = typeof path == 'function', | |
| 10990 result = isArrayLike(collection) ? Array(collection.length) : []; | |
| 10991 | |
| 10992 baseEach(collection, function(value) { | |
| 10993 result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args); | |
| 10994 }); | |
| 10995 return result; | |
| 10996 }); | |
| 10997 | |
| 10998 /** | |
| 10999 * Creates an object composed of keys generated from the results of running | |
| 11000 * each element of `collection` thru `iteratee`. The corresponding value of | |
| 11001 * each key is the last element responsible for generating the key. The | |
| 11002 * iteratee is invoked with one argument: (value). | |
| 11003 * | |
| 11004 * @static | |
| 11005 * @memberOf _ | |
| 11006 * @since 4.0.0 | |
| 11007 * @category Collection | |
| 11008 * @param {Array|Object} collection The collection to iterate over. | |
| 11009 * @param {Function} [iteratee=_.identity] The iteratee to transform keys. | |
| 11010 * @returns {Object} Returns the composed aggregate object. | |
| 11011 * @example | |
| 11012 * | |
| 11013 * var array = [ | |
| 11014 * { 'dir': 'left', 'code': 97 }, | |
| 11015 * { 'dir': 'right', 'code': 100 } | |
| 11016 * ]; | |
| 11017 * | |
| 11018 * _.keyBy(array, function(o) { | |
| 11019 * return String.fromCharCode(o.code); | |
| 11020 * }); | |
| 11021 * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } | |
| 11022 * | |
| 11023 * _.keyBy(array, 'dir'); | |
| 11024 * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } | |
| 11025 */ | |
| 11026 var keyBy = createAggregator(function(result, value, key) { | |
| 11027 baseAssignValue(result, key, value); | |
| 11028 }); | |
| 11029 | |
| 11030 /** | |
| 11031 * Creates an array of values by running each element in `collection` thru | |
| 11032 * `iteratee`. The iteratee is invoked with three arguments: | |
| 11033 * (value, index|key, collection). | |
| 11034 * | |
| 11035 * Many lodash methods are guarded to work as iteratees for methods like | |
| 11036 * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`. | |
| 11037 * | |
| 11038 * The guarded methods are: | |
| 11039 * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`, | |
| 11040 * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`, | |
| 11041 * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`, | |
| 11042 * `template`, `trim`, `trimEnd`, `trimStart`, and `words` | |
| 11043 * | |
| 11044 * @static | |
| 11045 * @memberOf _ | |
| 11046 * @since 0.1.0 | |
| 11047 * @category Collection | |
| 11048 * @param {Array|Object} collection The collection to iterate over. | |
| 11049 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 11050 * @returns {Array} Returns the new mapped array. | |
| 11051 * @example | |
| 11052 * | |
| 11053 * function square(n) { | |
| 11054 * return n * n; | |
| 11055 * } | |
| 11056 * | |
| 11057 * _.map([4, 8], square); | |
| 11058 * // => [16, 64] | |
| 11059 * | |
| 11060 * _.map({ 'a': 4, 'b': 8 }, square); | |
| 11061 * // => [16, 64] (iteration order is not guaranteed) | |
| 11062 * | |
| 11063 * var users = [ | |
| 11064 * { 'user': 'barney' }, | |
| 11065 * { 'user': 'fred' } | |
| 11066 * ]; | |
| 11067 * | |
| 11068 * // The `_.property` iteratee shorthand. | |
| 11069 * _.map(users, 'user'); | |
| 11070 * // => ['barney', 'fred'] | |
| 11071 */ | |
| 11072 function map(collection, iteratee) { | |
| 11073 var func = isArray(collection) ? arrayMap : baseMap; | |
| 11074 return func(collection, getIteratee(iteratee, 3)); | |
| 11075 } | |
| 11076 | |
| 11077 /** | |
| 11078 * This method is like `_.sortBy` except that it allows specifying the sort | |
| 11079 * orders of the iteratees to sort by. If `orders` is unspecified, all values | |
| 11080 * are sorted in ascending order. Otherwise, specify an order of "desc" for | |
| 11081 * descending or "asc" for ascending sort order of corresponding values. | |
| 11082 * | |
| 11083 * @static | |
| 11084 * @memberOf _ | |
| 11085 * @since 4.0.0 | |
| 11086 * @category Collection | |
| 11087 * @param {Array|Object} collection The collection to iterate over. | |
| 11088 * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]] | |
| 11089 * The iteratees to sort by. | |
| 11090 * @param {string[]} [orders] The sort orders of `iteratees`. | |
| 11091 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. | |
| 11092 * @returns {Array} Returns the new sorted array. | |
| 11093 * @example | |
| 11094 * | |
| 11095 * var users = [ | |
| 11096 * { 'user': 'fred', 'age': 48 }, | |
| 11097 * { 'user': 'barney', 'age': 34 }, | |
| 11098 * { 'user': 'fred', 'age': 40 }, | |
| 11099 * { 'user': 'barney', 'age': 36 } | |
| 11100 * ]; | |
| 11101 * | |
| 11102 * // Sort by `user` in ascending order and by `age` in descending order. | |
| 11103 * _.orderBy(users, ['user', 'age'], ['asc', 'desc']); | |
| 11104 * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] | |
| 11105 */ | |
| 11106 function orderBy(collection, iteratees, orders, guard) { | |
| 11107 if (collection == null) { | |
| 11108 return []; | |
| 11109 } | |
| 11110 if (!isArray(iteratees)) { | |
| 11111 iteratees = iteratees == null ? [] : [iteratees]; | |
| 11112 } | |
| 11113 orders = guard ? undefined : orders; | |
| 11114 if (!isArray(orders)) { | |
| 11115 orders = orders == null ? [] : [orders]; | |
| 11116 } | |
| 11117 return baseOrderBy(collection, iteratees, orders); | |
| 11118 } | |
| 11119 | |
| 11120 /** | |
| 11121 * Creates an array of elements split into two groups, the first of which | |
| 11122 * contains elements `predicate` returns truthy for, the second of which | |
| 11123 * contains elements `predicate` returns falsey for. The predicate is | |
| 11124 * invoked with one argument: (value). | |
| 11125 * | |
| 11126 * @static | |
| 11127 * @memberOf _ | |
| 11128 * @since 3.0.0 | |
| 11129 * @category Collection | |
| 11130 * @param {Array|Object} collection The collection to iterate over. | |
| 11131 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 11132 * @returns {Array} Returns the array of grouped elements. | |
| 11133 * @example | |
| 11134 * | |
| 11135 * var users = [ | |
| 11136 * { 'user': 'barney', 'age': 36, 'active': false }, | |
| 11137 * { 'user': 'fred', 'age': 40, 'active': true }, | |
| 11138 * { 'user': 'pebbles', 'age': 1, 'active': false } | |
| 11139 * ]; | |
| 11140 * | |
| 11141 * _.partition(users, function(o) { return o.active; }); | |
| 11142 * // => objects for [['fred'], ['barney', 'pebbles']] | |
| 11143 * | |
| 11144 * // The `_.matches` iteratee shorthand. | |
| 11145 * _.partition(users, { 'age': 1, 'active': false }); | |
| 11146 * // => objects for [['pebbles'], ['barney', 'fred']] | |
| 11147 * | |
| 11148 * // The `_.matchesProperty` iteratee shorthand. | |
| 11149 * _.partition(users, ['active', false]); | |
| 11150 * // => objects for [['barney', 'pebbles'], ['fred']] | |
| 11151 * | |
| 11152 * // The `_.property` iteratee shorthand. | |
| 11153 * _.partition(users, 'active'); | |
| 11154 * // => objects for [['fred'], ['barney', 'pebbles']] | |
| 11155 */ | |
| 11156 var partition = createAggregator(function(result, value, key) { | |
| 11157 result[key ? 0 : 1].push(value); | |
| 11158 }, function() { return [[], []]; }); | |
| 11159 | |
| 11160 /** | |
| 11161 * Reduces `collection` to a value which is the accumulated result of running | |
| 11162 * each element in `collection` thru `iteratee`, where each successive | |
| 11163 * invocation is supplied the return value of the previous. If `accumulator` | |
| 11164 * is not given, the first element of `collection` is used as the initial | |
| 11165 * value. The iteratee is invoked with four arguments: | |
| 11166 * (accumulator, value, index|key, collection). | |
| 11167 * | |
| 11168 * Many lodash methods are guarded to work as iteratees for methods like | |
| 11169 * `_.reduce`, `_.reduceRight`, and `_.transform`. | |
| 11170 * | |
| 11171 * The guarded methods are: | |
| 11172 * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`, | |
| 11173 * and `sortBy` | |
| 11174 * | |
| 11175 * @static | |
| 11176 * @memberOf _ | |
| 11177 * @since 0.1.0 | |
| 11178 * @category Collection | |
| 11179 * @param {Array|Object} collection The collection to iterate over. | |
| 11180 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 11181 * @param {*} [accumulator] The initial value. | |
| 11182 * @returns {*} Returns the accumulated value. | |
| 11183 * @see _.reduceRight | |
| 11184 * @example | |
| 11185 * | |
| 11186 * _.reduce([1, 2], function(sum, n) { | |
| 11187 * return sum + n; | |
| 11188 * }, 0); | |
| 11189 * // => 3 | |
| 11190 * | |
| 11191 * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { | |
| 11192 * (result[value] || (result[value] = [])).push(key); | |
| 11193 * return result; | |
| 11194 * }, {}); | |
| 11195 * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed) | |
| 11196 */ | |
| 11197 function reduce(collection, iteratee, accumulator) { | |
| 11198 var func = isArray(collection) ? arrayReduce : baseReduce, | |
| 11199 initAccum = arguments.length < 3; | |
| 11200 | |
| 11201 return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach); | |
| 11202 } | |
| 11203 | |
| 11204 /** | |
| 11205 * This method is like `_.reduce` except that it iterates over elements of | |
| 11206 * `collection` from right to left. | |
| 11207 * | |
| 11208 * @static | |
| 11209 * @memberOf _ | |
| 11210 * @since 0.1.0 | |
| 11211 * @category Collection | |
| 11212 * @param {Array|Object} collection The collection to iterate over. | |
| 11213 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 11214 * @param {*} [accumulator] The initial value. | |
| 11215 * @returns {*} Returns the accumulated value. | |
| 11216 * @see _.reduce | |
| 11217 * @example | |
| 11218 * | |
| 11219 * var array = [[0, 1], [2, 3], [4, 5]]; | |
| 11220 * | |
| 11221 * _.reduceRight(array, function(flattened, other) { | |
| 11222 * return flattened.concat(other); | |
| 11223 * }, []); | |
| 11224 * // => [4, 5, 2, 3, 0, 1] | |
| 11225 */ | |
| 11226 function reduceRight(collection, iteratee, accumulator) { | |
| 11227 var func = isArray(collection) ? arrayReduceRight : baseReduce, | |
| 11228 initAccum = arguments.length < 3; | |
| 11229 | |
| 11230 return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight); | |
| 11231 } | |
| 11232 | |
| 11233 /** | |
| 11234 * The opposite of `_.filter`; this method returns the elements of `collection` | |
| 11235 * that `predicate` does **not** return truthy for. | |
| 11236 * | |
| 11237 * @static | |
| 11238 * @memberOf _ | |
| 11239 * @since 0.1.0 | |
| 11240 * @category Collection | |
| 11241 * @param {Array|Object} collection The collection to iterate over. | |
| 11242 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 11243 * @returns {Array} Returns the new filtered array. | |
| 11244 * @see _.filter | |
| 11245 * @example | |
| 11246 * | |
| 11247 * var users = [ | |
| 11248 * { 'user': 'barney', 'age': 36, 'active': false }, | |
| 11249 * { 'user': 'fred', 'age': 40, 'active': true } | |
| 11250 * ]; | |
| 11251 * | |
| 11252 * _.reject(users, function(o) { return !o.active; }); | |
| 11253 * // => objects for ['fred'] | |
| 11254 * | |
| 11255 * // The `_.matches` iteratee shorthand. | |
| 11256 * _.reject(users, { 'age': 40, 'active': true }); | |
| 11257 * // => objects for ['barney'] | |
| 11258 * | |
| 11259 * // The `_.matchesProperty` iteratee shorthand. | |
| 11260 * _.reject(users, ['active', false]); | |
| 11261 * // => objects for ['fred'] | |
| 11262 * | |
| 11263 * // The `_.property` iteratee shorthand. | |
| 11264 * _.reject(users, 'active'); | |
| 11265 * // => objects for ['barney'] | |
| 11266 */ | |
| 11267 function reject(collection, predicate) { | |
| 11268 var func = isArray(collection) ? arrayFilter : baseFilter; | |
| 11269 return func(collection, negate(getIteratee(predicate, 3))); | |
| 11270 } | |
| 11271 | |
| 11272 /** | |
| 11273 * Gets a random element from `collection`. | |
| 11274 * | |
| 11275 * @static | |
| 11276 * @memberOf _ | |
| 11277 * @since 2.0.0 | |
| 11278 * @category Collection | |
| 11279 * @param {Array|Object} collection The collection to sample. | |
| 11280 * @returns {*} Returns the random element. | |
| 11281 * @example | |
| 11282 * | |
| 11283 * _.sample([1, 2, 3, 4]); | |
| 11284 * // => 2 | |
| 11285 */ | |
| 11286 function sample(collection) { | |
| 11287 var func = isArray(collection) ? arraySample : baseSample; | |
| 11288 return func(collection); | |
| 11289 } | |
| 11290 | |
| 11291 /** | |
| 11292 * Gets `n` random elements at unique keys from `collection` up to the | |
| 11293 * size of `collection`. | |
| 11294 * | |
| 11295 * @static | |
| 11296 * @memberOf _ | |
| 11297 * @since 4.0.0 | |
| 11298 * @category Collection | |
| 11299 * @param {Array|Object} collection The collection to sample. | |
| 11300 * @param {number} [n=1] The number of elements to sample. | |
| 11301 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 11302 * @returns {Array} Returns the random elements. | |
| 11303 * @example | |
| 11304 * | |
| 11305 * _.sampleSize([1, 2, 3], 2); | |
| 11306 * // => [3, 1] | |
| 11307 * | |
| 11308 * _.sampleSize([1, 2, 3], 4); | |
| 11309 * // => [2, 3, 1] | |
| 11310 */ | |
| 11311 function sampleSize(collection, n, guard) { | |
| 11312 if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) { | |
| 11313 n = 1; | |
| 11314 } else { | |
| 11315 n = toInteger(n); | |
| 11316 } | |
| 11317 var func = isArray(collection) ? arraySampleSize : baseSampleSize; | |
| 11318 return func(collection, n); | |
| 11319 } | |
| 11320 | |
| 11321 /** | |
| 11322 * Creates an array of shuffled values, using a version of the | |
| 11323 * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle). | |
| 11324 * | |
| 11325 * @static | |
| 11326 * @memberOf _ | |
| 11327 * @since 0.1.0 | |
| 11328 * @category Collection | |
| 11329 * @param {Array|Object} collection The collection to shuffle. | |
| 11330 * @returns {Array} Returns the new shuffled array. | |
| 11331 * @example | |
| 11332 * | |
| 11333 * _.shuffle([1, 2, 3, 4]); | |
| 11334 * // => [4, 1, 3, 2] | |
| 11335 */ | |
| 11336 function shuffle(collection) { | |
| 11337 var func = isArray(collection) ? arrayShuffle : baseShuffle; | |
| 11338 return func(collection); | |
| 11339 } | |
| 11340 | |
| 11341 /** | |
| 11342 * Gets the size of `collection` by returning its length for array-like | |
| 11343 * values or the number of own enumerable string keyed properties for objects. | |
| 11344 * | |
| 11345 * @static | |
| 11346 * @memberOf _ | |
| 11347 * @since 0.1.0 | |
| 11348 * @category Collection | |
| 11349 * @param {Array|Object|string} collection The collection to inspect. | |
| 11350 * @returns {number} Returns the collection size. | |
| 11351 * @example | |
| 11352 * | |
| 11353 * _.size([1, 2, 3]); | |
| 11354 * // => 3 | |
| 11355 * | |
| 11356 * _.size({ 'a': 1, 'b': 2 }); | |
| 11357 * // => 2 | |
| 11358 * | |
| 11359 * _.size('pebbles'); | |
| 11360 * // => 7 | |
| 11361 */ | |
| 11362 function size(collection) { | |
| 11363 if (collection == null) { | |
| 11364 return 0; | |
| 11365 } | |
| 11366 if (isArrayLike(collection)) { | |
| 11367 return isString(collection) ? stringSize(collection) : collection.length; | |
| 11368 } | |
| 11369 var tag = getTag(collection); | |
| 11370 if (tag == mapTag || tag == setTag) { | |
| 11371 return collection.size; | |
| 11372 } | |
| 11373 return baseKeys(collection).length; | |
| 11374 } | |
| 11375 | |
| 11376 /** | |
| 11377 * Checks if `predicate` returns truthy for **any** element of `collection`. | |
| 11378 * Iteration is stopped once `predicate` returns truthy. The predicate is | |
| 11379 * invoked with three arguments: (value, index|key, collection). | |
| 11380 * | |
| 11381 * @static | |
| 11382 * @memberOf _ | |
| 11383 * @since 0.1.0 | |
| 11384 * @category Collection | |
| 11385 * @param {Array|Object} collection The collection to iterate over. | |
| 11386 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 11387 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 11388 * @returns {boolean} Returns `true` if any element passes the predicate check, | |
| 11389 * else `false`. | |
| 11390 * @example | |
| 11391 * | |
| 11392 * _.some([null, 0, 'yes', false], Boolean); | |
| 11393 * // => true | |
| 11394 * | |
| 11395 * var users = [ | |
| 11396 * { 'user': 'barney', 'active': true }, | |
| 11397 * { 'user': 'fred', 'active': false } | |
| 11398 * ]; | |
| 11399 * | |
| 11400 * // The `_.matches` iteratee shorthand. | |
| 11401 * _.some(users, { 'user': 'barney', 'active': false }); | |
| 11402 * // => false | |
| 11403 * | |
| 11404 * // The `_.matchesProperty` iteratee shorthand. | |
| 11405 * _.some(users, ['active', false]); | |
| 11406 * // => true | |
| 11407 * | |
| 11408 * // The `_.property` iteratee shorthand. | |
| 11409 * _.some(users, 'active'); | |
| 11410 * // => true | |
| 11411 */ | |
| 11412 function some(collection, predicate, guard) { | |
| 11413 var func = isArray(collection) ? arraySome : baseSome; | |
| 11414 if (guard && isIterateeCall(collection, predicate, guard)) { | |
| 11415 predicate = undefined; | |
| 11416 } | |
| 11417 return func(collection, getIteratee(predicate, 3)); | |
| 11418 } | |
| 11419 | |
| 11420 /** | |
| 11421 * Creates an array of elements, sorted in ascending order by the results of | |
| 11422 * running each element in a collection thru each iteratee. This method | |
| 11423 * performs a stable sort, that is, it preserves the original sort order of | |
| 11424 * equal elements. The iteratees are invoked with one argument: (value). | |
| 11425 * | |
| 11426 * @static | |
| 11427 * @memberOf _ | |
| 11428 * @since 0.1.0 | |
| 11429 * @category Collection | |
| 11430 * @param {Array|Object} collection The collection to iterate over. | |
| 11431 * @param {...(Function|Function[])} [iteratees=[_.identity]] | |
| 11432 * The iteratees to sort by. | |
| 11433 * @returns {Array} Returns the new sorted array. | |
| 11434 * @example | |
| 11435 * | |
| 11436 * var users = [ | |
| 11437 * { 'user': 'fred', 'age': 48 }, | |
| 11438 * { 'user': 'barney', 'age': 36 }, | |
| 11439 * { 'user': 'fred', 'age': 30 }, | |
| 11440 * { 'user': 'barney', 'age': 34 } | |
| 11441 * ]; | |
| 11442 * | |
| 11443 * _.sortBy(users, [function(o) { return o.user; }]); | |
| 11444 * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]] | |
| 11445 * | |
| 11446 * _.sortBy(users, ['user', 'age']); | |
| 11447 * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]] | |
| 11448 */ | |
| 11449 var sortBy = baseRest(function(collection, iteratees) { | |
| 11450 if (collection == null) { | |
| 11451 return []; | |
| 11452 } | |
| 11453 var length = iteratees.length; | |
| 11454 if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) { | |
| 11455 iteratees = []; | |
| 11456 } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) { | |
| 11457 iteratees = [iteratees[0]]; | |
| 11458 } | |
| 11459 return baseOrderBy(collection, baseFlatten(iteratees, 1), []); | |
| 11460 }); | |
| 11461 | |
| 11462 /*------------------------------------------------------------------------*/ | |
| 11463 | |
| 11464 /** | |
| 11465 * Gets the timestamp of the number of milliseconds that have elapsed since | |
| 11466 * the Unix epoch (1 January 1970 00:00:00 UTC). | |
| 11467 * | |
| 11468 * @static | |
| 11469 * @memberOf _ | |
| 11470 * @since 2.4.0 | |
| 11471 * @category Date | |
| 11472 * @returns {number} Returns the timestamp. | |
| 11473 * @example | |
| 11474 * | |
| 11475 * _.defer(function(stamp) { | |
| 11476 * console.log(_.now() - stamp); | |
| 11477 * }, _.now()); | |
| 11478 * // => Logs the number of milliseconds it took for the deferred invocation. | |
| 11479 */ | |
| 11480 var now = ctxNow || function() { | |
| 11481 return root.Date.now(); | |
| 11482 }; | |
| 11483 | |
| 11484 /*------------------------------------------------------------------------*/ | |
| 11485 | |
| 11486 /** | |
| 11487 * The opposite of `_.before`; this method creates a function that invokes | |
| 11488 * `func` once it's called `n` or more times. | |
| 11489 * | |
| 11490 * @static | |
| 11491 * @memberOf _ | |
| 11492 * @since 0.1.0 | |
| 11493 * @category Function | |
| 11494 * @param {number} n The number of calls before `func` is invoked. | |
| 11495 * @param {Function} func The function to restrict. | |
| 11496 * @returns {Function} Returns the new restricted function. | |
| 11497 * @example | |
| 11498 * | |
| 11499 * var saves = ['profile', 'settings']; | |
| 11500 * | |
| 11501 * var done = _.after(saves.length, function() { | |
| 11502 * console.log('done saving!'); | |
| 11503 * }); | |
| 11504 * | |
| 11505 * _.forEach(saves, function(type) { | |
| 11506 * asyncSave({ 'type': type, 'complete': done }); | |
| 11507 * }); | |
| 11508 * // => Logs 'done saving!' after the two async saves have completed. | |
| 11509 */ | |
| 11510 function after(n, func) { | |
| 11511 if (typeof func != 'function') { | |
| 11512 throw new TypeError(FUNC_ERROR_TEXT); | |
| 11513 } | |
| 11514 n = toInteger(n); | |
| 11515 return function() { | |
| 11516 if (--n < 1) { | |
| 11517 return func.apply(this, arguments); | |
| 11518 } | |
| 11519 }; | |
| 11520 } | |
| 11521 | |
| 11522 /** | |
| 11523 * Creates a function that invokes `func`, with up to `n` arguments, | |
| 11524 * ignoring any additional arguments. | |
| 11525 * | |
| 11526 * @static | |
| 11527 * @memberOf _ | |
| 11528 * @since 3.0.0 | |
| 11529 * @category Function | |
| 11530 * @param {Function} func The function to cap arguments for. | |
| 11531 * @param {number} [n=func.length] The arity cap. | |
| 11532 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 11533 * @returns {Function} Returns the new capped function. | |
| 11534 * @example | |
| 11535 * | |
| 11536 * _.map(['6', '8', '10'], _.ary(parseInt, 1)); | |
| 11537 * // => [6, 8, 10] | |
| 11538 */ | |
| 11539 function ary(func, n, guard) { | |
| 11540 n = guard ? undefined : n; | |
| 11541 n = (func && n == null) ? func.length : n; | |
| 11542 return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n); | |
| 11543 } | |
| 11544 | |
| 11545 /** | |
| 11546 * Creates a function that invokes `func`, with the `this` binding and arguments | |
| 11547 * of the created function, while it's called less than `n` times. Subsequent | |
| 11548 * calls to the created function return the result of the last `func` invocation. | |
| 11549 * | |
| 11550 * @static | |
| 11551 * @memberOf _ | |
| 11552 * @since 3.0.0 | |
| 11553 * @category Function | |
| 11554 * @param {number} n The number of calls at which `func` is no longer invoked. | |
| 11555 * @param {Function} func The function to restrict. | |
| 11556 * @returns {Function} Returns the new restricted function. | |
| 11557 * @example | |
| 11558 * | |
| 11559 * jQuery(element).on('click', _.before(5, addContactToList)); | |
| 11560 * // => Allows adding up to 4 contacts to the list. | |
| 11561 */ | |
| 11562 function before(n, func) { | |
| 11563 var result; | |
| 11564 if (typeof func != 'function') { | |
| 11565 throw new TypeError(FUNC_ERROR_TEXT); | |
| 11566 } | |
| 11567 n = toInteger(n); | |
| 11568 return function() { | |
| 11569 if (--n > 0) { | |
| 11570 result = func.apply(this, arguments); | |
| 11571 } | |
| 11572 if (n <= 1) { | |
| 11573 func = undefined; | |
| 11574 } | |
| 11575 return result; | |
| 11576 }; | |
| 11577 } | |
| 11578 | |
| 11579 /** | |
| 11580 * Creates a function that invokes `func` with the `this` binding of `thisArg` | |
| 11581 * and `partials` prepended to the arguments it receives. | |
| 11582 * | |
| 11583 * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, | |
| 11584 * may be used as a placeholder for partially applied arguments. | |
| 11585 * | |
| 11586 * **Note:** Unlike native `Function#bind`, this method doesn't set the "length" | |
| 11587 * property of bound functions. | |
| 11588 * | |
| 11589 * @static | |
| 11590 * @memberOf _ | |
| 11591 * @since 0.1.0 | |
| 11592 * @category Function | |
| 11593 * @param {Function} func The function to bind. | |
| 11594 * @param {*} thisArg The `this` binding of `func`. | |
| 11595 * @param {...*} [partials] The arguments to be partially applied. | |
| 11596 * @returns {Function} Returns the new bound function. | |
| 11597 * @example | |
| 11598 * | |
| 11599 * function greet(greeting, punctuation) { | |
| 11600 * return greeting + ' ' + this.user + punctuation; | |
| 11601 * } | |
| 11602 * | |
| 11603 * var object = { 'user': 'fred' }; | |
| 11604 * | |
| 11605 * var bound = _.bind(greet, object, 'hi'); | |
| 11606 * bound('!'); | |
| 11607 * // => 'hi fred!' | |
| 11608 * | |
| 11609 * // Bound with placeholders. | |
| 11610 * var bound = _.bind(greet, object, _, '!'); | |
| 11611 * bound('hi'); | |
| 11612 * // => 'hi fred!' | |
| 11613 */ | |
| 11614 var bind = baseRest(function(func, thisArg, partials) { | |
| 11615 var bitmask = WRAP_BIND_FLAG; | |
| 11616 if (partials.length) { | |
| 11617 var holders = replaceHolders(partials, getHolder(bind)); | |
| 11618 bitmask |= WRAP_PARTIAL_FLAG; | |
| 11619 } | |
| 11620 return createWrap(func, bitmask, thisArg, partials, holders); | |
| 11621 }); | |
| 11622 | |
| 11623 /** | |
| 11624 * Creates a function that invokes the method at `object[key]` with `partials` | |
| 11625 * prepended to the arguments it receives. | |
| 11626 * | |
| 11627 * This method differs from `_.bind` by allowing bound functions to reference | |
| 11628 * methods that may be redefined or don't yet exist. See | |
| 11629 * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern) | |
| 11630 * for more details. | |
| 11631 * | |
| 11632 * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic | |
| 11633 * builds, may be used as a placeholder for partially applied arguments. | |
| 11634 * | |
| 11635 * @static | |
| 11636 * @memberOf _ | |
| 11637 * @since 0.10.0 | |
| 11638 * @category Function | |
| 11639 * @param {Object} object The object to invoke the method on. | |
| 11640 * @param {string} key The key of the method. | |
| 11641 * @param {...*} [partials] The arguments to be partially applied. | |
| 11642 * @returns {Function} Returns the new bound function. | |
| 11643 * @example | |
| 11644 * | |
| 11645 * var object = { | |
| 11646 * 'user': 'fred', | |
| 11647 * 'greet': function(greeting, punctuation) { | |
| 11648 * return greeting + ' ' + this.user + punctuation; | |
| 11649 * } | |
| 11650 * }; | |
| 11651 * | |
| 11652 * var bound = _.bindKey(object, 'greet', 'hi'); | |
| 11653 * bound('!'); | |
| 11654 * // => 'hi fred!' | |
| 11655 * | |
| 11656 * object.greet = function(greeting, punctuation) { | |
| 11657 * return greeting + 'ya ' + this.user + punctuation; | |
| 11658 * }; | |
| 11659 * | |
| 11660 * bound('!'); | |
| 11661 * // => 'hiya fred!' | |
| 11662 * | |
| 11663 * // Bound with placeholders. | |
| 11664 * var bound = _.bindKey(object, 'greet', _, '!'); | |
| 11665 * bound('hi'); | |
| 11666 * // => 'hiya fred!' | |
| 11667 */ | |
| 11668 var bindKey = baseRest(function(object, key, partials) { | |
| 11669 var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG; | |
| 11670 if (partials.length) { | |
| 11671 var holders = replaceHolders(partials, getHolder(bindKey)); | |
| 11672 bitmask |= WRAP_PARTIAL_FLAG; | |
| 11673 } | |
| 11674 return createWrap(key, bitmask, object, partials, holders); | |
| 11675 }); | |
| 11676 | |
| 11677 /** | |
| 11678 * Creates a function that accepts arguments of `func` and either invokes | |
| 11679 * `func` returning its result, if at least `arity` number of arguments have | |
| 11680 * been provided, or returns a function that accepts the remaining `func` | |
| 11681 * arguments, and so on. The arity of `func` may be specified if `func.length` | |
| 11682 * is not sufficient. | |
| 11683 * | |
| 11684 * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds, | |
| 11685 * may be used as a placeholder for provided arguments. | |
| 11686 * | |
| 11687 * **Note:** This method doesn't set the "length" property of curried functions. | |
| 11688 * | |
| 11689 * @static | |
| 11690 * @memberOf _ | |
| 11691 * @since 2.0.0 | |
| 11692 * @category Function | |
| 11693 * @param {Function} func The function to curry. | |
| 11694 * @param {number} [arity=func.length] The arity of `func`. | |
| 11695 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 11696 * @returns {Function} Returns the new curried function. | |
| 11697 * @example | |
| 11698 * | |
| 11699 * var abc = function(a, b, c) { | |
| 11700 * return [a, b, c]; | |
| 11701 * }; | |
| 11702 * | |
| 11703 * var curried = _.curry(abc); | |
| 11704 * | |
| 11705 * curried(1)(2)(3); | |
| 11706 * // => [1, 2, 3] | |
| 11707 * | |
| 11708 * curried(1, 2)(3); | |
| 11709 * // => [1, 2, 3] | |
| 11710 * | |
| 11711 * curried(1, 2, 3); | |
| 11712 * // => [1, 2, 3] | |
| 11713 * | |
| 11714 * // Curried with placeholders. | |
| 11715 * curried(1)(_, 3)(2); | |
| 11716 * // => [1, 2, 3] | |
| 11717 */ | |
| 11718 function curry(func, arity, guard) { | |
| 11719 arity = guard ? undefined : arity; | |
| 11720 var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity); | |
| 11721 result.placeholder = curry.placeholder; | |
| 11722 return result; | |
| 11723 } | |
| 11724 | |
| 11725 /** | |
| 11726 * This method is like `_.curry` except that arguments are applied to `func` | |
| 11727 * in the manner of `_.partialRight` instead of `_.partial`. | |
| 11728 * | |
| 11729 * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic | |
| 11730 * builds, may be used as a placeholder for provided arguments. | |
| 11731 * | |
| 11732 * **Note:** This method doesn't set the "length" property of curried functions. | |
| 11733 * | |
| 11734 * @static | |
| 11735 * @memberOf _ | |
| 11736 * @since 3.0.0 | |
| 11737 * @category Function | |
| 11738 * @param {Function} func The function to curry. | |
| 11739 * @param {number} [arity=func.length] The arity of `func`. | |
| 11740 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 11741 * @returns {Function} Returns the new curried function. | |
| 11742 * @example | |
| 11743 * | |
| 11744 * var abc = function(a, b, c) { | |
| 11745 * return [a, b, c]; | |
| 11746 * }; | |
| 11747 * | |
| 11748 * var curried = _.curryRight(abc); | |
| 11749 * | |
| 11750 * curried(3)(2)(1); | |
| 11751 * // => [1, 2, 3] | |
| 11752 * | |
| 11753 * curried(2, 3)(1); | |
| 11754 * // => [1, 2, 3] | |
| 11755 * | |
| 11756 * curried(1, 2, 3); | |
| 11757 * // => [1, 2, 3] | |
| 11758 * | |
| 11759 * // Curried with placeholders. | |
| 11760 * curried(3)(1, _)(2); | |
| 11761 * // => [1, 2, 3] | |
| 11762 */ | |
| 11763 function curryRight(func, arity, guard) { | |
| 11764 arity = guard ? undefined : arity; | |
| 11765 var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity); | |
| 11766 result.placeholder = curryRight.placeholder; | |
| 11767 return result; | |
| 11768 } | |
| 11769 | |
| 11770 /** | |
| 11771 * Creates a debounced function that delays invoking `func` until after `wait` | |
| 11772 * milliseconds have elapsed since the last time the debounced function was | |
| 11773 * invoked. The debounced function comes with a `cancel` method to cancel | |
| 11774 * delayed `func` invocations and a `flush` method to immediately invoke them. | |
| 11775 * Provide `options` to indicate whether `func` should be invoked on the | |
| 11776 * leading and/or trailing edge of the `wait` timeout. The `func` is invoked | |
| 11777 * with the last arguments provided to the debounced function. Subsequent | |
| 11778 * calls to the debounced function return the result of the last `func` | |
| 11779 * invocation. | |
| 11780 * | |
| 11781 * **Note:** If `leading` and `trailing` options are `true`, `func` is | |
| 11782 * invoked on the trailing edge of the timeout only if the debounced function | |
| 11783 * is invoked more than once during the `wait` timeout. | |
| 11784 * | |
| 11785 * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred | |
| 11786 * until to the next tick, similar to `setTimeout` with a timeout of `0`. | |
| 11787 * | |
| 11788 * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) | |
| 11789 * for details over the differences between `_.debounce` and `_.throttle`. | |
| 11790 * | |
| 11791 * @static | |
| 11792 * @memberOf _ | |
| 11793 * @since 0.1.0 | |
| 11794 * @category Function | |
| 11795 * @param {Function} func The function to debounce. | |
| 11796 * @param {number} [wait=0] The number of milliseconds to delay. | |
| 11797 * @param {Object} [options={}] The options object. | |
| 11798 * @param {boolean} [options.leading=false] | |
| 11799 * Specify invoking on the leading edge of the timeout. | |
| 11800 * @param {number} [options.maxWait] | |
| 11801 * The maximum time `func` is allowed to be delayed before it's invoked. | |
| 11802 * @param {boolean} [options.trailing=true] | |
| 11803 * Specify invoking on the trailing edge of the timeout. | |
| 11804 * @returns {Function} Returns the new debounced function. | |
| 11805 * @example | |
| 11806 * | |
| 11807 * // Avoid costly calculations while the window size is in flux. | |
| 11808 * jQuery(window).on('resize', _.debounce(calculateLayout, 150)); | |
| 11809 * | |
| 11810 * // Invoke `sendMail` when clicked, debouncing subsequent calls. | |
| 11811 * jQuery(element).on('click', _.debounce(sendMail, 300, { | |
| 11812 * 'leading': true, | |
| 11813 * 'trailing': false | |
| 11814 * })); | |
| 11815 * | |
| 11816 * // Ensure `batchLog` is invoked once after 1 second of debounced calls. | |
| 11817 * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 }); | |
| 11818 * var source = new EventSource('/stream'); | |
| 11819 * jQuery(source).on('message', debounced); | |
| 11820 * | |
| 11821 * // Cancel the trailing debounced invocation. | |
| 11822 * jQuery(window).on('popstate', debounced.cancel); | |
| 11823 */ | |
| 11824 function debounce(func, wait, options) { | |
| 11825 var lastArgs, | |
| 11826 lastThis, | |
| 11827 maxWait, | |
| 11828 result, | |
| 11829 timerId, | |
| 11830 lastCallTime, | |
| 11831 lastInvokeTime = 0, | |
| 11832 leading = false, | |
| 11833 maxing = false, | |
| 11834 trailing = true; | |
| 11835 | |
| 11836 if (typeof func != 'function') { | |
| 11837 throw new TypeError(FUNC_ERROR_TEXT); | |
| 11838 } | |
| 11839 wait = toNumber(wait) || 0; | |
| 11840 if (isObject(options)) { | |
| 11841 leading = !!options.leading; | |
| 11842 maxing = 'maxWait' in options; | |
| 11843 maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait; | |
| 11844 trailing = 'trailing' in options ? !!options.trailing : trailing; | |
| 11845 } | |
| 11846 | |
| 11847 function invokeFunc(time) { | |
| 11848 var args = lastArgs, | |
| 11849 thisArg = lastThis; | |
| 11850 | |
| 11851 lastArgs = lastThis = undefined; | |
| 11852 lastInvokeTime = time; | |
| 11853 result = func.apply(thisArg, args); | |
| 11854 return result; | |
| 11855 } | |
| 11856 | |
| 11857 function leadingEdge(time) { | |
| 11858 // Reset any `maxWait` timer. | |
| 11859 lastInvokeTime = time; | |
| 11860 // Start the timer for the trailing edge. | |
| 11861 timerId = setTimeout(timerExpired, wait); | |
| 11862 // Invoke the leading edge. | |
| 11863 return leading ? invokeFunc(time) : result; | |
| 11864 } | |
| 11865 | |
| 11866 function remainingWait(time) { | |
| 11867 var timeSinceLastCall = time - lastCallTime, | |
| 11868 timeSinceLastInvoke = time - lastInvokeTime, | |
| 11869 timeWaiting = wait - timeSinceLastCall; | |
| 11870 | |
| 11871 return maxing | |
| 11872 ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) | |
| 11873 : timeWaiting; | |
| 11874 } | |
| 11875 | |
| 11876 function shouldInvoke(time) { | |
| 11877 var timeSinceLastCall = time - lastCallTime, | |
| 11878 timeSinceLastInvoke = time - lastInvokeTime; | |
| 11879 | |
| 11880 // Either this is the first call, activity has stopped and we're at the | |
| 11881 // trailing edge, the system time has gone backwards and we're treating | |
| 11882 // it as the trailing edge, or we've hit the `maxWait` limit. | |
| 11883 return (lastCallTime === undefined || (timeSinceLastCall >= wait) || | |
| 11884 (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait)); | |
| 11885 } | |
| 11886 | |
| 11887 function timerExpired() { | |
| 11888 var time = now(); | |
| 11889 if (shouldInvoke(time)) { | |
| 11890 return trailingEdge(time); | |
| 11891 } | |
| 11892 // Restart the timer. | |
| 11893 timerId = setTimeout(timerExpired, remainingWait(time)); | |
| 11894 } | |
| 11895 | |
| 11896 function trailingEdge(time) { | |
| 11897 timerId = undefined; | |
| 11898 | |
| 11899 // Only invoke if we have `lastArgs` which means `func` has been | |
| 11900 // debounced at least once. | |
| 11901 if (trailing && lastArgs) { | |
| 11902 return invokeFunc(time); | |
| 11903 } | |
| 11904 lastArgs = lastThis = undefined; | |
| 11905 return result; | |
| 11906 } | |
| 11907 | |
| 11908 function cancel() { | |
| 11909 if (timerId !== undefined) { | |
| 11910 clearTimeout(timerId); | |
| 11911 } | |
| 11912 lastInvokeTime = 0; | |
| 11913 lastArgs = lastCallTime = lastThis = timerId = undefined; | |
| 11914 } | |
| 11915 | |
| 11916 function flush() { | |
| 11917 return timerId === undefined ? result : trailingEdge(now()); | |
| 11918 } | |
| 11919 | |
| 11920 function debounced() { | |
| 11921 var time = now(), | |
| 11922 isInvoking = shouldInvoke(time); | |
| 11923 | |
| 11924 lastArgs = arguments; | |
| 11925 lastThis = this; | |
| 11926 lastCallTime = time; | |
| 11927 | |
| 11928 if (isInvoking) { | |
| 11929 if (timerId === undefined) { | |
| 11930 return leadingEdge(lastCallTime); | |
| 11931 } | |
| 11932 if (maxing) { | |
| 11933 // Handle invocations in a tight loop. | |
| 11934 clearTimeout(timerId); | |
| 11935 timerId = setTimeout(timerExpired, wait); | |
| 11936 return invokeFunc(lastCallTime); | |
| 11937 } | |
| 11938 } | |
| 11939 if (timerId === undefined) { | |
| 11940 timerId = setTimeout(timerExpired, wait); | |
| 11941 } | |
| 11942 return result; | |
| 11943 } | |
| 11944 debounced.cancel = cancel; | |
| 11945 debounced.flush = flush; | |
| 11946 return debounced; | |
| 11947 } | |
| 11948 | |
| 11949 /** | |
| 11950 * Defers invoking the `func` until the current call stack has cleared. Any | |
| 11951 * additional arguments are provided to `func` when it's invoked. | |
| 11952 * | |
| 11953 * @static | |
| 11954 * @memberOf _ | |
| 11955 * @since 0.1.0 | |
| 11956 * @category Function | |
| 11957 * @param {Function} func The function to defer. | |
| 11958 * @param {...*} [args] The arguments to invoke `func` with. | |
| 11959 * @returns {number} Returns the timer id. | |
| 11960 * @example | |
| 11961 * | |
| 11962 * _.defer(function(text) { | |
| 11963 * console.log(text); | |
| 11964 * }, 'deferred'); | |
| 11965 * // => Logs 'deferred' after one millisecond. | |
| 11966 */ | |
| 11967 var defer = baseRest(function(func, args) { | |
| 11968 return baseDelay(func, 1, args); | |
| 11969 }); | |
| 11970 | |
| 11971 /** | |
| 11972 * Invokes `func` after `wait` milliseconds. Any additional arguments are | |
| 11973 * provided to `func` when it's invoked. | |
| 11974 * | |
| 11975 * @static | |
| 11976 * @memberOf _ | |
| 11977 * @since 0.1.0 | |
| 11978 * @category Function | |
| 11979 * @param {Function} func The function to delay. | |
| 11980 * @param {number} wait The number of milliseconds to delay invocation. | |
| 11981 * @param {...*} [args] The arguments to invoke `func` with. | |
| 11982 * @returns {number} Returns the timer id. | |
| 11983 * @example | |
| 11984 * | |
| 11985 * _.delay(function(text) { | |
| 11986 * console.log(text); | |
| 11987 * }, 1000, 'later'); | |
| 11988 * // => Logs 'later' after one second. | |
| 11989 */ | |
| 11990 var delay = baseRest(function(func, wait, args) { | |
| 11991 return baseDelay(func, toNumber(wait) || 0, args); | |
| 11992 }); | |
| 11993 | |
| 11994 /** | |
| 11995 * Creates a function that invokes `func` with arguments reversed. | |
| 11996 * | |
| 11997 * @static | |
| 11998 * @memberOf _ | |
| 11999 * @since 4.0.0 | |
| 12000 * @category Function | |
| 12001 * @param {Function} func The function to flip arguments for. | |
| 12002 * @returns {Function} Returns the new flipped function. | |
| 12003 * @example | |
| 12004 * | |
| 12005 * var flipped = _.flip(function() { | |
| 12006 * return _.toArray(arguments); | |
| 12007 * }); | |
| 12008 * | |
| 12009 * flipped('a', 'b', 'c', 'd'); | |
| 12010 * // => ['d', 'c', 'b', 'a'] | |
| 12011 */ | |
| 12012 function flip(func) { | |
| 12013 return createWrap(func, WRAP_FLIP_FLAG); | |
| 12014 } | |
| 12015 | |
| 12016 /** | |
| 12017 * Creates a function that memoizes the result of `func`. If `resolver` is | |
| 12018 * provided, it determines the cache key for storing the result based on the | |
| 12019 * arguments provided to the memoized function. By default, the first argument | |
| 12020 * provided to the memoized function is used as the map cache key. The `func` | |
| 12021 * is invoked with the `this` binding of the memoized function. | |
| 12022 * | |
| 12023 * **Note:** The cache is exposed as the `cache` property on the memoized | |
| 12024 * function. Its creation may be customized by replacing the `_.memoize.Cache` | |
| 12025 * constructor with one whose instances implement the | |
| 12026 * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object) | |
| 12027 * method interface of `clear`, `delete`, `get`, `has`, and `set`. | |
| 12028 * | |
| 12029 * @static | |
| 12030 * @memberOf _ | |
| 12031 * @since 0.1.0 | |
| 12032 * @category Function | |
| 12033 * @param {Function} func The function to have its output memoized. | |
| 12034 * @param {Function} [resolver] The function to resolve the cache key. | |
| 12035 * @returns {Function} Returns the new memoized function. | |
| 12036 * @example | |
| 12037 * | |
| 12038 * var object = { 'a': 1, 'b': 2 }; | |
| 12039 * var other = { 'c': 3, 'd': 4 }; | |
| 12040 * | |
| 12041 * var values = _.memoize(_.values); | |
| 12042 * values(object); | |
| 12043 * // => [1, 2] | |
| 12044 * | |
| 12045 * values(other); | |
| 12046 * // => [3, 4] | |
| 12047 * | |
| 12048 * object.a = 2; | |
| 12049 * values(object); | |
| 12050 * // => [1, 2] | |
| 12051 * | |
| 12052 * // Modify the result cache. | |
| 12053 * values.cache.set(object, ['a', 'b']); | |
| 12054 * values(object); | |
| 12055 * // => ['a', 'b'] | |
| 12056 * | |
| 12057 * // Replace `_.memoize.Cache`. | |
| 12058 * _.memoize.Cache = WeakMap; | |
| 12059 */ | |
| 12060 function memoize(func, resolver) { | |
| 12061 if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) { | |
| 12062 throw new TypeError(FUNC_ERROR_TEXT); | |
| 12063 } | |
| 12064 var memoized = function() { | |
| 12065 var args = arguments, | |
| 12066 key = resolver ? resolver.apply(this, args) : args[0], | |
| 12067 cache = memoized.cache; | |
| 12068 | |
| 12069 if (cache.has(key)) { | |
| 12070 return cache.get(key); | |
| 12071 } | |
| 12072 var result = func.apply(this, args); | |
| 12073 memoized.cache = cache.set(key, result) || cache; | |
| 12074 return result; | |
| 12075 }; | |
| 12076 memoized.cache = new (memoize.Cache || MapCache); | |
| 12077 return memoized; | |
| 12078 } | |
| 12079 | |
| 12080 // Expose `MapCache`. | |
| 12081 memoize.Cache = MapCache; | |
| 12082 | |
| 12083 /** | |
| 12084 * Creates a function that negates the result of the predicate `func`. The | |
| 12085 * `func` predicate is invoked with the `this` binding and arguments of the | |
| 12086 * created function. | |
| 12087 * | |
| 12088 * @static | |
| 12089 * @memberOf _ | |
| 12090 * @since 3.0.0 | |
| 12091 * @category Function | |
| 12092 * @param {Function} predicate The predicate to negate. | |
| 12093 * @returns {Function} Returns the new negated function. | |
| 12094 * @example | |
| 12095 * | |
| 12096 * function isEven(n) { | |
| 12097 * return n % 2 == 0; | |
| 12098 * } | |
| 12099 * | |
| 12100 * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)); | |
| 12101 * // => [1, 3, 5] | |
| 12102 */ | |
| 12103 function negate(predicate) { | |
| 12104 if (typeof predicate != 'function') { | |
| 12105 throw new TypeError(FUNC_ERROR_TEXT); | |
| 12106 } | |
| 12107 return function() { | |
| 12108 var args = arguments; | |
| 12109 switch (args.length) { | |
| 12110 case 0: return !predicate.call(this); | |
| 12111 case 1: return !predicate.call(this, args[0]); | |
| 12112 case 2: return !predicate.call(this, args[0], args[1]); | |
| 12113 case 3: return !predicate.call(this, args[0], args[1], args[2]); | |
| 12114 } | |
| 12115 return !predicate.apply(this, args); | |
| 12116 }; | |
| 12117 } | |
| 12118 | |
| 12119 /** | |
| 12120 * Creates a function that is restricted to invoking `func` once. Repeat calls | |
| 12121 * to the function return the value of the first invocation. The `func` is | |
| 12122 * invoked with the `this` binding and arguments of the created function. | |
| 12123 * | |
| 12124 * @static | |
| 12125 * @memberOf _ | |
| 12126 * @since 0.1.0 | |
| 12127 * @category Function | |
| 12128 * @param {Function} func The function to restrict. | |
| 12129 * @returns {Function} Returns the new restricted function. | |
| 12130 * @example | |
| 12131 * | |
| 12132 * var initialize = _.once(createApplication); | |
| 12133 * initialize(); | |
| 12134 * initialize(); | |
| 12135 * // => `createApplication` is invoked once | |
| 12136 */ | |
| 12137 function once(func) { | |
| 12138 return before(2, func); | |
| 12139 } | |
| 12140 | |
| 12141 /** | |
| 12142 * Creates a function that invokes `func` with its arguments transformed. | |
| 12143 * | |
| 12144 * @static | |
| 12145 * @since 4.0.0 | |
| 12146 * @memberOf _ | |
| 12147 * @category Function | |
| 12148 * @param {Function} func The function to wrap. | |
| 12149 * @param {...(Function|Function[])} [transforms=[_.identity]] | |
| 12150 * The argument transforms. | |
| 12151 * @returns {Function} Returns the new function. | |
| 12152 * @example | |
| 12153 * | |
| 12154 * function doubled(n) { | |
| 12155 * return n * 2; | |
| 12156 * } | |
| 12157 * | |
| 12158 * function square(n) { | |
| 12159 * return n * n; | |
| 12160 * } | |
| 12161 * | |
| 12162 * var func = _.overArgs(function(x, y) { | |
| 12163 * return [x, y]; | |
| 12164 * }, [square, doubled]); | |
| 12165 * | |
| 12166 * func(9, 3); | |
| 12167 * // => [81, 6] | |
| 12168 * | |
| 12169 * func(10, 5); | |
| 12170 * // => [100, 10] | |
| 12171 */ | |
| 12172 var overArgs = castRest(function(func, transforms) { | |
| 12173 transforms = (transforms.length == 1 && isArray(transforms[0])) | |
| 12174 ? arrayMap(transforms[0], baseUnary(getIteratee())) | |
| 12175 : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee())); | |
| 12176 | |
| 12177 var funcsLength = transforms.length; | |
| 12178 return baseRest(function(args) { | |
| 12179 var index = -1, | |
| 12180 length = nativeMin(args.length, funcsLength); | |
| 12181 | |
| 12182 while (++index < length) { | |
| 12183 args[index] = transforms[index].call(this, args[index]); | |
| 12184 } | |
| 12185 return apply(func, this, args); | |
| 12186 }); | |
| 12187 }); | |
| 12188 | |
| 12189 /** | |
| 12190 * Creates a function that invokes `func` with `partials` prepended to the | |
| 12191 * arguments it receives. This method is like `_.bind` except it does **not** | |
| 12192 * alter the `this` binding. | |
| 12193 * | |
| 12194 * The `_.partial.placeholder` value, which defaults to `_` in monolithic | |
| 12195 * builds, may be used as a placeholder for partially applied arguments. | |
| 12196 * | |
| 12197 * **Note:** This method doesn't set the "length" property of partially | |
| 12198 * applied functions. | |
| 12199 * | |
| 12200 * @static | |
| 12201 * @memberOf _ | |
| 12202 * @since 0.2.0 | |
| 12203 * @category Function | |
| 12204 * @param {Function} func The function to partially apply arguments to. | |
| 12205 * @param {...*} [partials] The arguments to be partially applied. | |
| 12206 * @returns {Function} Returns the new partially applied function. | |
| 12207 * @example | |
| 12208 * | |
| 12209 * function greet(greeting, name) { | |
| 12210 * return greeting + ' ' + name; | |
| 12211 * } | |
| 12212 * | |
| 12213 * var sayHelloTo = _.partial(greet, 'hello'); | |
| 12214 * sayHelloTo('fred'); | |
| 12215 * // => 'hello fred' | |
| 12216 * | |
| 12217 * // Partially applied with placeholders. | |
| 12218 * var greetFred = _.partial(greet, _, 'fred'); | |
| 12219 * greetFred('hi'); | |
| 12220 * // => 'hi fred' | |
| 12221 */ | |
| 12222 var partial = baseRest(function(func, partials) { | |
| 12223 var holders = replaceHolders(partials, getHolder(partial)); | |
| 12224 return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders); | |
| 12225 }); | |
| 12226 | |
| 12227 /** | |
| 12228 * This method is like `_.partial` except that partially applied arguments | |
| 12229 * are appended to the arguments it receives. | |
| 12230 * | |
| 12231 * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic | |
| 12232 * builds, may be used as a placeholder for partially applied arguments. | |
| 12233 * | |
| 12234 * **Note:** This method doesn't set the "length" property of partially | |
| 12235 * applied functions. | |
| 12236 * | |
| 12237 * @static | |
| 12238 * @memberOf _ | |
| 12239 * @since 1.0.0 | |
| 12240 * @category Function | |
| 12241 * @param {Function} func The function to partially apply arguments to. | |
| 12242 * @param {...*} [partials] The arguments to be partially applied. | |
| 12243 * @returns {Function} Returns the new partially applied function. | |
| 12244 * @example | |
| 12245 * | |
| 12246 * function greet(greeting, name) { | |
| 12247 * return greeting + ' ' + name; | |
| 12248 * } | |
| 12249 * | |
| 12250 * var greetFred = _.partialRight(greet, 'fred'); | |
| 12251 * greetFred('hi'); | |
| 12252 * // => 'hi fred' | |
| 12253 * | |
| 12254 * // Partially applied with placeholders. | |
| 12255 * var sayHelloTo = _.partialRight(greet, 'hello', _); | |
| 12256 * sayHelloTo('fred'); | |
| 12257 * // => 'hello fred' | |
| 12258 */ | |
| 12259 var partialRight = baseRest(function(func, partials) { | |
| 12260 var holders = replaceHolders(partials, getHolder(partialRight)); | |
| 12261 return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders); | |
| 12262 }); | |
| 12263 | |
| 12264 /** | |
| 12265 * Creates a function that invokes `func` with arguments arranged according | |
| 12266 * to the specified `indexes` where the argument value at the first index is | |
| 12267 * provided as the first argument, the argument value at the second index is | |
| 12268 * provided as the second argument, and so on. | |
| 12269 * | |
| 12270 * @static | |
| 12271 * @memberOf _ | |
| 12272 * @since 3.0.0 | |
| 12273 * @category Function | |
| 12274 * @param {Function} func The function to rearrange arguments for. | |
| 12275 * @param {...(number|number[])} indexes The arranged argument indexes. | |
| 12276 * @returns {Function} Returns the new function. | |
| 12277 * @example | |
| 12278 * | |
| 12279 * var rearged = _.rearg(function(a, b, c) { | |
| 12280 * return [a, b, c]; | |
| 12281 * }, [2, 0, 1]); | |
| 12282 * | |
| 12283 * rearged('b', 'c', 'a') | |
| 12284 * // => ['a', 'b', 'c'] | |
| 12285 */ | |
| 12286 var rearg = flatRest(function(func, indexes) { | |
| 12287 return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes); | |
| 12288 }); | |
| 12289 | |
| 12290 /** | |
| 12291 * Creates a function that invokes `func` with the `this` binding of the | |
| 12292 * created function and arguments from `start` and beyond provided as | |
| 12293 * an array. | |
| 12294 * | |
| 12295 * **Note:** This method is based on the | |
| 12296 * [rest parameter](https://mdn.io/rest_parameters). | |
| 12297 * | |
| 12298 * @static | |
| 12299 * @memberOf _ | |
| 12300 * @since 4.0.0 | |
| 12301 * @category Function | |
| 12302 * @param {Function} func The function to apply a rest parameter to. | |
| 12303 * @param {number} [start=func.length-1] The start position of the rest parameter. | |
| 12304 * @returns {Function} Returns the new function. | |
| 12305 * @example | |
| 12306 * | |
| 12307 * var say = _.rest(function(what, names) { | |
| 12308 * return what + ' ' + _.initial(names).join(', ') + | |
| 12309 * (_.size(names) > 1 ? ', & ' : '') + _.last(names); | |
| 12310 * }); | |
| 12311 * | |
| 12312 * say('hello', 'fred', 'barney', 'pebbles'); | |
| 12313 * // => 'hello fred, barney, & pebbles' | |
| 12314 */ | |
| 12315 function rest(func, start) { | |
| 12316 if (typeof func != 'function') { | |
| 12317 throw new TypeError(FUNC_ERROR_TEXT); | |
| 12318 } | |
| 12319 start = start === undefined ? start : toInteger(start); | |
| 12320 return baseRest(func, start); | |
| 12321 } | |
| 12322 | |
| 12323 /** | |
| 12324 * Creates a function that invokes `func` with the `this` binding of the | |
| 12325 * create function and an array of arguments much like | |
| 12326 * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply). | |
| 12327 * | |
| 12328 * **Note:** This method is based on the | |
| 12329 * [spread operator](https://mdn.io/spread_operator). | |
| 12330 * | |
| 12331 * @static | |
| 12332 * @memberOf _ | |
| 12333 * @since 3.2.0 | |
| 12334 * @category Function | |
| 12335 * @param {Function} func The function to spread arguments over. | |
| 12336 * @param {number} [start=0] The start position of the spread. | |
| 12337 * @returns {Function} Returns the new function. | |
| 12338 * @example | |
| 12339 * | |
| 12340 * var say = _.spread(function(who, what) { | |
| 12341 * return who + ' says ' + what; | |
| 12342 * }); | |
| 12343 * | |
| 12344 * say(['fred', 'hello']); | |
| 12345 * // => 'fred says hello' | |
| 12346 * | |
| 12347 * var numbers = Promise.all([ | |
| 12348 * Promise.resolve(40), | |
| 12349 * Promise.resolve(36) | |
| 12350 * ]); | |
| 12351 * | |
| 12352 * numbers.then(_.spread(function(x, y) { | |
| 12353 * return x + y; | |
| 12354 * })); | |
| 12355 * // => a Promise of 76 | |
| 12356 */ | |
| 12357 function spread(func, start) { | |
| 12358 if (typeof func != 'function') { | |
| 12359 throw new TypeError(FUNC_ERROR_TEXT); | |
| 12360 } | |
| 12361 start = start == null ? 0 : nativeMax(toInteger(start), 0); | |
| 12362 return baseRest(function(args) { | |
| 12363 var array = args[start], | |
| 12364 otherArgs = castSlice(args, 0, start); | |
| 12365 | |
| 12366 if (array) { | |
| 12367 arrayPush(otherArgs, array); | |
| 12368 } | |
| 12369 return apply(func, this, otherArgs); | |
| 12370 }); | |
| 12371 } | |
| 12372 | |
| 12373 /** | |
| 12374 * Creates a throttled function that only invokes `func` at most once per | |
| 12375 * every `wait` milliseconds. The throttled function comes with a `cancel` | |
| 12376 * method to cancel delayed `func` invocations and a `flush` method to | |
| 12377 * immediately invoke them. Provide `options` to indicate whether `func` | |
| 12378 * should be invoked on the leading and/or trailing edge of the `wait` | |
| 12379 * timeout. The `func` is invoked with the last arguments provided to the | |
| 12380 * throttled function. Subsequent calls to the throttled function return the | |
| 12381 * result of the last `func` invocation. | |
| 12382 * | |
| 12383 * **Note:** If `leading` and `trailing` options are `true`, `func` is | |
| 12384 * invoked on the trailing edge of the timeout only if the throttled function | |
| 12385 * is invoked more than once during the `wait` timeout. | |
| 12386 * | |
| 12387 * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred | |
| 12388 * until to the next tick, similar to `setTimeout` with a timeout of `0`. | |
| 12389 * | |
| 12390 * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) | |
| 12391 * for details over the differences between `_.throttle` and `_.debounce`. | |
| 12392 * | |
| 12393 * @static | |
| 12394 * @memberOf _ | |
| 12395 * @since 0.1.0 | |
| 12396 * @category Function | |
| 12397 * @param {Function} func The function to throttle. | |
| 12398 * @param {number} [wait=0] The number of milliseconds to throttle invocations to. | |
| 12399 * @param {Object} [options={}] The options object. | |
| 12400 * @param {boolean} [options.leading=true] | |
| 12401 * Specify invoking on the leading edge of the timeout. | |
| 12402 * @param {boolean} [options.trailing=true] | |
| 12403 * Specify invoking on the trailing edge of the timeout. | |
| 12404 * @returns {Function} Returns the new throttled function. | |
| 12405 * @example | |
| 12406 * | |
| 12407 * // Avoid excessively updating the position while scrolling. | |
| 12408 * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); | |
| 12409 * | |
| 12410 * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes. | |
| 12411 * var throttled = _.throttle(renewToken, 300000, { 'trailing': false }); | |
| 12412 * jQuery(element).on('click', throttled); | |
| 12413 * | |
| 12414 * // Cancel the trailing throttled invocation. | |
| 12415 * jQuery(window).on('popstate', throttled.cancel); | |
| 12416 */ | |
| 12417 function throttle(func, wait, options) { | |
| 12418 var leading = true, | |
| 12419 trailing = true; | |
| 12420 | |
| 12421 if (typeof func != 'function') { | |
| 12422 throw new TypeError(FUNC_ERROR_TEXT); | |
| 12423 } | |
| 12424 if (isObject(options)) { | |
| 12425 leading = 'leading' in options ? !!options.leading : leading; | |
| 12426 trailing = 'trailing' in options ? !!options.trailing : trailing; | |
| 12427 } | |
| 12428 return debounce(func, wait, { | |
| 12429 'leading': leading, | |
| 12430 'maxWait': wait, | |
| 12431 'trailing': trailing | |
| 12432 }); | |
| 12433 } | |
| 12434 | |
| 12435 /** | |
| 12436 * Creates a function that accepts up to one argument, ignoring any | |
| 12437 * additional arguments. | |
| 12438 * | |
| 12439 * @static | |
| 12440 * @memberOf _ | |
| 12441 * @since 4.0.0 | |
| 12442 * @category Function | |
| 12443 * @param {Function} func The function to cap arguments for. | |
| 12444 * @returns {Function} Returns the new capped function. | |
| 12445 * @example | |
| 12446 * | |
| 12447 * _.map(['6', '8', '10'], _.unary(parseInt)); | |
| 12448 * // => [6, 8, 10] | |
| 12449 */ | |
| 12450 function unary(func) { | |
| 12451 return ary(func, 1); | |
| 12452 } | |
| 12453 | |
| 12454 /** | |
| 12455 * Creates a function that provides `value` to `wrapper` as its first | |
| 12456 * argument. Any additional arguments provided to the function are appended | |
| 12457 * to those provided to the `wrapper`. The wrapper is invoked with the `this` | |
| 12458 * binding of the created function. | |
| 12459 * | |
| 12460 * @static | |
| 12461 * @memberOf _ | |
| 12462 * @since 0.1.0 | |
| 12463 * @category Function | |
| 12464 * @param {*} value The value to wrap. | |
| 12465 * @param {Function} [wrapper=identity] The wrapper function. | |
| 12466 * @returns {Function} Returns the new function. | |
| 12467 * @example | |
| 12468 * | |
| 12469 * var p = _.wrap(_.escape, function(func, text) { | |
| 12470 * return '<p>' + func(text) + '</p>'; | |
| 12471 * }); | |
| 12472 * | |
| 12473 * p('fred, barney, & pebbles'); | |
| 12474 * // => '<p>fred, barney, & pebbles</p>' | |
| 12475 */ | |
| 12476 function wrap(value, wrapper) { | |
| 12477 return partial(castFunction(wrapper), value); | |
| 12478 } | |
| 12479 | |
| 12480 /*------------------------------------------------------------------------*/ | |
| 12481 | |
| 12482 /** | |
| 12483 * Casts `value` as an array if it's not one. | |
| 12484 * | |
| 12485 * @static | |
| 12486 * @memberOf _ | |
| 12487 * @since 4.4.0 | |
| 12488 * @category Lang | |
| 12489 * @param {*} value The value to inspect. | |
| 12490 * @returns {Array} Returns the cast array. | |
| 12491 * @example | |
| 12492 * | |
| 12493 * _.castArray(1); | |
| 12494 * // => [1] | |
| 12495 * | |
| 12496 * _.castArray({ 'a': 1 }); | |
| 12497 * // => [{ 'a': 1 }] | |
| 12498 * | |
| 12499 * _.castArray('abc'); | |
| 12500 * // => ['abc'] | |
| 12501 * | |
| 12502 * _.castArray(null); | |
| 12503 * // => [null] | |
| 12504 * | |
| 12505 * _.castArray(undefined); | |
| 12506 * // => [undefined] | |
| 12507 * | |
| 12508 * _.castArray(); | |
| 12509 * // => [] | |
| 12510 * | |
| 12511 * var array = [1, 2, 3]; | |
| 12512 * console.log(_.castArray(array) === array); | |
| 12513 * // => true | |
| 12514 */ | |
| 12515 function castArray() { | |
| 12516 if (!arguments.length) { | |
| 12517 return []; | |
| 12518 } | |
| 12519 var value = arguments[0]; | |
| 12520 return isArray(value) ? value : [value]; | |
| 12521 } | |
| 12522 | |
| 12523 /** | |
| 12524 * Creates a shallow clone of `value`. | |
| 12525 * | |
| 12526 * **Note:** This method is loosely based on the | |
| 12527 * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm) | |
| 12528 * and supports cloning arrays, array buffers, booleans, date objects, maps, | |
| 12529 * numbers, `Object` objects, regexes, sets, strings, symbols, and typed | |
| 12530 * arrays. The own enumerable properties of `arguments` objects are cloned | |
| 12531 * as plain objects. An empty object is returned for uncloneable values such | |
| 12532 * as error objects, functions, DOM nodes, and WeakMaps. | |
| 12533 * | |
| 12534 * @static | |
| 12535 * @memberOf _ | |
| 12536 * @since 0.1.0 | |
| 12537 * @category Lang | |
| 12538 * @param {*} value The value to clone. | |
| 12539 * @returns {*} Returns the cloned value. | |
| 12540 * @see _.cloneDeep | |
| 12541 * @example | |
| 12542 * | |
| 12543 * var objects = [{ 'a': 1 }, { 'b': 2 }]; | |
| 12544 * | |
| 12545 * var shallow = _.clone(objects); | |
| 12546 * console.log(shallow[0] === objects[0]); | |
| 12547 * // => true | |
| 12548 */ | |
| 12549 function clone(value) { | |
| 12550 return baseClone(value, CLONE_SYMBOLS_FLAG); | |
| 12551 } | |
| 12552 | |
| 12553 /** | |
| 12554 * This method is like `_.clone` except that it accepts `customizer` which | |
| 12555 * is invoked to produce the cloned value. If `customizer` returns `undefined`, | |
| 12556 * cloning is handled by the method instead. The `customizer` is invoked with | |
| 12557 * up to four arguments; (value [, index|key, object, stack]). | |
| 12558 * | |
| 12559 * @static | |
| 12560 * @memberOf _ | |
| 12561 * @since 4.0.0 | |
| 12562 * @category Lang | |
| 12563 * @param {*} value The value to clone. | |
| 12564 * @param {Function} [customizer] The function to customize cloning. | |
| 12565 * @returns {*} Returns the cloned value. | |
| 12566 * @see _.cloneDeepWith | |
| 12567 * @example | |
| 12568 * | |
| 12569 * function customizer(value) { | |
| 12570 * if (_.isElement(value)) { | |
| 12571 * return value.cloneNode(false); | |
| 12572 * } | |
| 12573 * } | |
| 12574 * | |
| 12575 * var el = _.cloneWith(document.body, customizer); | |
| 12576 * | |
| 12577 * console.log(el === document.body); | |
| 12578 * // => false | |
| 12579 * console.log(el.nodeName); | |
| 12580 * // => 'BODY' | |
| 12581 * console.log(el.childNodes.length); | |
| 12582 * // => 0 | |
| 12583 */ | |
| 12584 function cloneWith(value, customizer) { | |
| 12585 customizer = typeof customizer == 'function' ? customizer : undefined; | |
| 12586 return baseClone(value, CLONE_SYMBOLS_FLAG, customizer); | |
| 12587 } | |
| 12588 | |
| 12589 /** | |
| 12590 * This method is like `_.clone` except that it recursively clones `value`. | |
| 12591 * | |
| 12592 * @static | |
| 12593 * @memberOf _ | |
| 12594 * @since 1.0.0 | |
| 12595 * @category Lang | |
| 12596 * @param {*} value The value to recursively clone. | |
| 12597 * @returns {*} Returns the deep cloned value. | |
| 12598 * @see _.clone | |
| 12599 * @example | |
| 12600 * | |
| 12601 * var objects = [{ 'a': 1 }, { 'b': 2 }]; | |
| 12602 * | |
| 12603 * var deep = _.cloneDeep(objects); | |
| 12604 * console.log(deep[0] === objects[0]); | |
| 12605 * // => false | |
| 12606 */ | |
| 12607 function cloneDeep(value) { | |
| 12608 return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG); | |
| 12609 } | |
| 12610 | |
| 12611 /** | |
| 12612 * This method is like `_.cloneWith` except that it recursively clones `value`. | |
| 12613 * | |
| 12614 * @static | |
| 12615 * @memberOf _ | |
| 12616 * @since 4.0.0 | |
| 12617 * @category Lang | |
| 12618 * @param {*} value The value to recursively clone. | |
| 12619 * @param {Function} [customizer] The function to customize cloning. | |
| 12620 * @returns {*} Returns the deep cloned value. | |
| 12621 * @see _.cloneWith | |
| 12622 * @example | |
| 12623 * | |
| 12624 * function customizer(value) { | |
| 12625 * if (_.isElement(value)) { | |
| 12626 * return value.cloneNode(true); | |
| 12627 * } | |
| 12628 * } | |
| 12629 * | |
| 12630 * var el = _.cloneDeepWith(document.body, customizer); | |
| 12631 * | |
| 12632 * console.log(el === document.body); | |
| 12633 * // => false | |
| 12634 * console.log(el.nodeName); | |
| 12635 * // => 'BODY' | |
| 12636 * console.log(el.childNodes.length); | |
| 12637 * // => 20 | |
| 12638 */ | |
| 12639 function cloneDeepWith(value, customizer) { | |
| 12640 customizer = typeof customizer == 'function' ? customizer : undefined; | |
| 12641 return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer); | |
| 12642 } | |
| 12643 | |
| 12644 /** | |
| 12645 * Checks if `object` conforms to `source` by invoking the predicate | |
| 12646 * properties of `source` with the corresponding property values of `object`. | |
| 12647 * | |
| 12648 * **Note:** This method is equivalent to `_.conforms` when `source` is | |
| 12649 * partially applied. | |
| 12650 * | |
| 12651 * @static | |
| 12652 * @memberOf _ | |
| 12653 * @since 4.14.0 | |
| 12654 * @category Lang | |
| 12655 * @param {Object} object The object to inspect. | |
| 12656 * @param {Object} source The object of property predicates to conform to. | |
| 12657 * @returns {boolean} Returns `true` if `object` conforms, else `false`. | |
| 12658 * @example | |
| 12659 * | |
| 12660 * var object = { 'a': 1, 'b': 2 }; | |
| 12661 * | |
| 12662 * _.conformsTo(object, { 'b': function(n) { return n > 1; } }); | |
| 12663 * // => true | |
| 12664 * | |
| 12665 * _.conformsTo(object, { 'b': function(n) { return n > 2; } }); | |
| 12666 * // => false | |
| 12667 */ | |
| 12668 function conformsTo(object, source) { | |
| 12669 return source == null || baseConformsTo(object, source, keys(source)); | |
| 12670 } | |
| 12671 | |
| 12672 /** | |
| 12673 * Performs a | |
| 12674 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) | |
| 12675 * comparison between two values to determine if they are equivalent. | |
| 12676 * | |
| 12677 * @static | |
| 12678 * @memberOf _ | |
| 12679 * @since 4.0.0 | |
| 12680 * @category Lang | |
| 12681 * @param {*} value The value to compare. | |
| 12682 * @param {*} other The other value to compare. | |
| 12683 * @returns {boolean} Returns `true` if the values are equivalent, else `false`. | |
| 12684 * @example | |
| 12685 * | |
| 12686 * var object = { 'a': 1 }; | |
| 12687 * var other = { 'a': 1 }; | |
| 12688 * | |
| 12689 * _.eq(object, object); | |
| 12690 * // => true | |
| 12691 * | |
| 12692 * _.eq(object, other); | |
| 12693 * // => false | |
| 12694 * | |
| 12695 * _.eq('a', 'a'); | |
| 12696 * // => true | |
| 12697 * | |
| 12698 * _.eq('a', Object('a')); | |
| 12699 * // => false | |
| 12700 * | |
| 12701 * _.eq(NaN, NaN); | |
| 12702 * // => true | |
| 12703 */ | |
| 12704 function eq(value, other) { | |
| 12705 return value === other || (value !== value && other !== other); | |
| 12706 } | |
| 12707 | |
| 12708 /** | |
| 12709 * Checks if `value` is greater than `other`. | |
| 12710 * | |
| 12711 * @static | |
| 12712 * @memberOf _ | |
| 12713 * @since 3.9.0 | |
| 12714 * @category Lang | |
| 12715 * @param {*} value The value to compare. | |
| 12716 * @param {*} other The other value to compare. | |
| 12717 * @returns {boolean} Returns `true` if `value` is greater than `other`, | |
| 12718 * else `false`. | |
| 12719 * @see _.lt | |
| 12720 * @example | |
| 12721 * | |
| 12722 * _.gt(3, 1); | |
| 12723 * // => true | |
| 12724 * | |
| 12725 * _.gt(3, 3); | |
| 12726 * // => false | |
| 12727 * | |
| 12728 * _.gt(1, 3); | |
| 12729 * // => false | |
| 12730 */ | |
| 12731 var gt = createRelationalOperation(baseGt); | |
| 12732 | |
| 12733 /** | |
| 12734 * Checks if `value` is greater than or equal to `other`. | |
| 12735 * | |
| 12736 * @static | |
| 12737 * @memberOf _ | |
| 12738 * @since 3.9.0 | |
| 12739 * @category Lang | |
| 12740 * @param {*} value The value to compare. | |
| 12741 * @param {*} other The other value to compare. | |
| 12742 * @returns {boolean} Returns `true` if `value` is greater than or equal to | |
| 12743 * `other`, else `false`. | |
| 12744 * @see _.lte | |
| 12745 * @example | |
| 12746 * | |
| 12747 * _.gte(3, 1); | |
| 12748 * // => true | |
| 12749 * | |
| 12750 * _.gte(3, 3); | |
| 12751 * // => true | |
| 12752 * | |
| 12753 * _.gte(1, 3); | |
| 12754 * // => false | |
| 12755 */ | |
| 12756 var gte = createRelationalOperation(function(value, other) { | |
| 12757 return value >= other; | |
| 12758 }); | |
| 12759 | |
| 12760 /** | |
| 12761 * Checks if `value` is likely an `arguments` object. | |
| 12762 * | |
| 12763 * @static | |
| 12764 * @memberOf _ | |
| 12765 * @since 0.1.0 | |
| 12766 * @category Lang | |
| 12767 * @param {*} value The value to check. | |
| 12768 * @returns {boolean} Returns `true` if `value` is an `arguments` object, | |
| 12769 * else `false`. | |
| 12770 * @example | |
| 12771 * | |
| 12772 * _.isArguments(function() { return arguments; }()); | |
| 12773 * // => true | |
| 12774 * | |
| 12775 * _.isArguments([1, 2, 3]); | |
| 12776 * // => false | |
| 12777 */ | |
| 12778 var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) { | |
| 12779 return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && | |
| 12780 !propertyIsEnumerable.call(value, 'callee'); | |
| 12781 }; | |
| 12782 | |
| 12783 /** | |
| 12784 * Checks if `value` is classified as an `Array` object. | |
| 12785 * | |
| 12786 * @static | |
| 12787 * @memberOf _ | |
| 12788 * @since 0.1.0 | |
| 12789 * @category Lang | |
| 12790 * @param {*} value The value to check. | |
| 12791 * @returns {boolean} Returns `true` if `value` is an array, else `false`. | |
| 12792 * @example | |
| 12793 * | |
| 12794 * _.isArray([1, 2, 3]); | |
| 12795 * // => true | |
| 12796 * | |
| 12797 * _.isArray(document.body.children); | |
| 12798 * // => false | |
| 12799 * | |
| 12800 * _.isArray('abc'); | |
| 12801 * // => false | |
| 12802 * | |
| 12803 * _.isArray(_.noop); | |
| 12804 * // => false | |
| 12805 */ | |
| 12806 var isArray = Array.isArray; | |
| 12807 | |
| 12808 /** | |
| 12809 * Checks if `value` is classified as an `ArrayBuffer` object. | |
| 12810 * | |
| 12811 * @static | |
| 12812 * @memberOf _ | |
| 12813 * @since 4.3.0 | |
| 12814 * @category Lang | |
| 12815 * @param {*} value The value to check. | |
| 12816 * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. | |
| 12817 * @example | |
| 12818 * | |
| 12819 * _.isArrayBuffer(new ArrayBuffer(2)); | |
| 12820 * // => true | |
| 12821 * | |
| 12822 * _.isArrayBuffer(new Array(2)); | |
| 12823 * // => false | |
| 12824 */ | |
| 12825 var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer; | |
| 12826 | |
| 12827 /** | |
| 12828 * Checks if `value` is array-like. A value is considered array-like if it's | |
| 12829 * not a function and has a `value.length` that's an integer greater than or | |
| 12830 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`. | |
| 12831 * | |
| 12832 * @static | |
| 12833 * @memberOf _ | |
| 12834 * @since 4.0.0 | |
| 12835 * @category Lang | |
| 12836 * @param {*} value The value to check. | |
| 12837 * @returns {boolean} Returns `true` if `value` is array-like, else `false`. | |
| 12838 * @example | |
| 12839 * | |
| 12840 * _.isArrayLike([1, 2, 3]); | |
| 12841 * // => true | |
| 12842 * | |
| 12843 * _.isArrayLike(document.body.children); | |
| 12844 * // => true | |
| 12845 * | |
| 12846 * _.isArrayLike('abc'); | |
| 12847 * // => true | |
| 12848 * | |
| 12849 * _.isArrayLike(_.noop); | |
| 12850 * // => false | |
| 12851 */ | |
| 12852 function isArrayLike(value) { | |
| 12853 return value != null && isLength(value.length) && !isFunction(value); | |
| 12854 } | |
| 12855 | |
| 12856 /** | |
| 12857 * This method is like `_.isArrayLike` except that it also checks if `value` | |
| 12858 * is an object. | |
| 12859 * | |
| 12860 * @static | |
| 12861 * @memberOf _ | |
| 12862 * @since 4.0.0 | |
| 12863 * @category Lang | |
| 12864 * @param {*} value The value to check. | |
| 12865 * @returns {boolean} Returns `true` if `value` is an array-like object, | |
| 12866 * else `false`. | |
| 12867 * @example | |
| 12868 * | |
| 12869 * _.isArrayLikeObject([1, 2, 3]); | |
| 12870 * // => true | |
| 12871 * | |
| 12872 * _.isArrayLikeObject(document.body.children); | |
| 12873 * // => true | |
| 12874 * | |
| 12875 * _.isArrayLikeObject('abc'); | |
| 12876 * // => false | |
| 12877 * | |
| 12878 * _.isArrayLikeObject(_.noop); | |
| 12879 * // => false | |
| 12880 */ | |
| 12881 function isArrayLikeObject(value) { | |
| 12882 return isObjectLike(value) && isArrayLike(value); | |
| 12883 } | |
| 12884 | |
| 12885 /** | |
| 12886 * Checks if `value` is classified as a boolean primitive or object. | |
| 12887 * | |
| 12888 * @static | |
| 12889 * @memberOf _ | |
| 12890 * @since 0.1.0 | |
| 12891 * @category Lang | |
| 12892 * @param {*} value The value to check. | |
| 12893 * @returns {boolean} Returns `true` if `value` is a boolean, else `false`. | |
| 12894 * @example | |
| 12895 * | |
| 12896 * _.isBoolean(false); | |
| 12897 * // => true | |
| 12898 * | |
| 12899 * _.isBoolean(null); | |
| 12900 * // => false | |
| 12901 */ | |
| 12902 function isBoolean(value) { | |
| 12903 return value === true || value === false || | |
| 12904 (isObjectLike(value) && baseGetTag(value) == boolTag); | |
| 12905 } | |
| 12906 | |
| 12907 /** | |
| 12908 * Checks if `value` is a buffer. | |
| 12909 * | |
| 12910 * @static | |
| 12911 * @memberOf _ | |
| 12912 * @since 4.3.0 | |
| 12913 * @category Lang | |
| 12914 * @param {*} value The value to check. | |
| 12915 * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. | |
| 12916 * @example | |
| 12917 * | |
| 12918 * _.isBuffer(new Buffer(2)); | |
| 12919 * // => true | |
| 12920 * | |
| 12921 * _.isBuffer(new Uint8Array(2)); | |
| 12922 * // => false | |
| 12923 */ | |
| 12924 var isBuffer = nativeIsBuffer || stubFalse; | |
| 12925 | |
| 12926 /** | |
| 12927 * Checks if `value` is classified as a `Date` object. | |
| 12928 * | |
| 12929 * @static | |
| 12930 * @memberOf _ | |
| 12931 * @since 0.1.0 | |
| 12932 * @category Lang | |
| 12933 * @param {*} value The value to check. | |
| 12934 * @returns {boolean} Returns `true` if `value` is a date object, else `false`. | |
| 12935 * @example | |
| 12936 * | |
| 12937 * _.isDate(new Date); | |
| 12938 * // => true | |
| 12939 * | |
| 12940 * _.isDate('Mon April 23 2012'); | |
| 12941 * // => false | |
| 12942 */ | |
| 12943 var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate; | |
| 12944 | |
| 12945 /** | |
| 12946 * Checks if `value` is likely a DOM element. | |
| 12947 * | |
| 12948 * @static | |
| 12949 * @memberOf _ | |
| 12950 * @since 0.1.0 | |
| 12951 * @category Lang | |
| 12952 * @param {*} value The value to check. | |
| 12953 * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`. | |
| 12954 * @example | |
| 12955 * | |
| 12956 * _.isElement(document.body); | |
| 12957 * // => true | |
| 12958 * | |
| 12959 * _.isElement('<body>'); | |
| 12960 * // => false | |
| 12961 */ | |
| 12962 function isElement(value) { | |
| 12963 return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value); | |
| 12964 } | |
| 12965 | |
| 12966 /** | |
| 12967 * Checks if `value` is an empty object, collection, map, or set. | |
| 12968 * | |
| 12969 * Objects are considered empty if they have no own enumerable string keyed | |
| 12970 * properties. | |
| 12971 * | |
| 12972 * Array-like values such as `arguments` objects, arrays, buffers, strings, or | |
| 12973 * jQuery-like collections are considered empty if they have a `length` of `0`. | |
| 12974 * Similarly, maps and sets are considered empty if they have a `size` of `0`. | |
| 12975 * | |
| 12976 * @static | |
| 12977 * @memberOf _ | |
| 12978 * @since 0.1.0 | |
| 12979 * @category Lang | |
| 12980 * @param {*} value The value to check. | |
| 12981 * @returns {boolean} Returns `true` if `value` is empty, else `false`. | |
| 12982 * @example | |
| 12983 * | |
| 12984 * _.isEmpty(null); | |
| 12985 * // => true | |
| 12986 * | |
| 12987 * _.isEmpty(true); | |
| 12988 * // => true | |
| 12989 * | |
| 12990 * _.isEmpty(1); | |
| 12991 * // => true | |
| 12992 * | |
| 12993 * _.isEmpty([1, 2, 3]); | |
| 12994 * // => false | |
| 12995 * | |
| 12996 * _.isEmpty({ 'a': 1 }); | |
| 12997 * // => false | |
| 12998 */ | |
| 12999 function isEmpty(value) { | |
| 13000 if (value == null) { | |
| 13001 return true; | |
| 13002 } | |
| 13003 if (isArrayLike(value) && | |
| 13004 (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || | |
| 13005 isBuffer(value) || isTypedArray(value) || isArguments(value))) { | |
| 13006 return !value.length; | |
| 13007 } | |
| 13008 var tag = getTag(value); | |
| 13009 if (tag == mapTag || tag == setTag) { | |
| 13010 return !value.size; | |
| 13011 } | |
| 13012 if (isPrototype(value)) { | |
| 13013 return !baseKeys(value).length; | |
| 13014 } | |
| 13015 for (var key in value) { | |
| 13016 if (hasOwnProperty.call(value, key)) { | |
| 13017 return false; | |
| 13018 } | |
| 13019 } | |
| 13020 return true; | |
| 13021 } | |
| 13022 | |
| 13023 /** | |
| 13024 * Performs a deep comparison between two values to determine if they are | |
| 13025 * equivalent. | |
| 13026 * | |
| 13027 * **Note:** This method supports comparing arrays, array buffers, booleans, | |
| 13028 * date objects, error objects, maps, numbers, `Object` objects, regexes, | |
| 13029 * sets, strings, symbols, and typed arrays. `Object` objects are compared | |
| 13030 * by their own, not inherited, enumerable properties. Functions and DOM | |
| 13031 * nodes are compared by strict equality, i.e. `===`. | |
| 13032 * | |
| 13033 * @static | |
| 13034 * @memberOf _ | |
| 13035 * @since 0.1.0 | |
| 13036 * @category Lang | |
| 13037 * @param {*} value The value to compare. | |
| 13038 * @param {*} other The other value to compare. | |
| 13039 * @returns {boolean} Returns `true` if the values are equivalent, else `false`. | |
| 13040 * @example | |
| 13041 * | |
| 13042 * var object = { 'a': 1 }; | |
| 13043 * var other = { 'a': 1 }; | |
| 13044 * | |
| 13045 * _.isEqual(object, other); | |
| 13046 * // => true | |
| 13047 * | |
| 13048 * object === other; | |
| 13049 * // => false | |
| 13050 */ | |
| 13051 function isEqual(value, other) { | |
| 13052 return baseIsEqual(value, other); | |
| 13053 } | |
| 13054 | |
| 13055 /** | |
| 13056 * This method is like `_.isEqual` except that it accepts `customizer` which | |
| 13057 * is invoked to compare values. If `customizer` returns `undefined`, comparisons | |
| 13058 * are handled by the method instead. The `customizer` is invoked with up to | |
| 13059 * six arguments: (objValue, othValue [, index|key, object, other, stack]). | |
| 13060 * | |
| 13061 * @static | |
| 13062 * @memberOf _ | |
| 13063 * @since 4.0.0 | |
| 13064 * @category Lang | |
| 13065 * @param {*} value The value to compare. | |
| 13066 * @param {*} other The other value to compare. | |
| 13067 * @param {Function} [customizer] The function to customize comparisons. | |
| 13068 * @returns {boolean} Returns `true` if the values are equivalent, else `false`. | |
| 13069 * @example | |
| 13070 * | |
| 13071 * function isGreeting(value) { | |
| 13072 * return /^h(?:i|ello)$/.test(value); | |
| 13073 * } | |
| 13074 * | |
| 13075 * function customizer(objValue, othValue) { | |
| 13076 * if (isGreeting(objValue) && isGreeting(othValue)) { | |
| 13077 * return true; | |
| 13078 * } | |
| 13079 * } | |
| 13080 * | |
| 13081 * var array = ['hello', 'goodbye']; | |
| 13082 * var other = ['hi', 'goodbye']; | |
| 13083 * | |
| 13084 * _.isEqualWith(array, other, customizer); | |
| 13085 * // => true | |
| 13086 */ | |
| 13087 function isEqualWith(value, other, customizer) { | |
| 13088 customizer = typeof customizer == 'function' ? customizer : undefined; | |
| 13089 var result = customizer ? customizer(value, other) : undefined; | |
| 13090 return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result; | |
| 13091 } | |
| 13092 | |
| 13093 /** | |
| 13094 * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, | |
| 13095 * `SyntaxError`, `TypeError`, or `URIError` object. | |
| 13096 * | |
| 13097 * @static | |
| 13098 * @memberOf _ | |
| 13099 * @since 3.0.0 | |
| 13100 * @category Lang | |
| 13101 * @param {*} value The value to check. | |
| 13102 * @returns {boolean} Returns `true` if `value` is an error object, else `false`. | |
| 13103 * @example | |
| 13104 * | |
| 13105 * _.isError(new Error); | |
| 13106 * // => true | |
| 13107 * | |
| 13108 * _.isError(Error); | |
| 13109 * // => false | |
| 13110 */ | |
| 13111 function isError(value) { | |
| 13112 if (!isObjectLike(value)) { | |
| 13113 return false; | |
| 13114 } | |
| 13115 var tag = baseGetTag(value); | |
| 13116 return tag == errorTag || tag == domExcTag || | |
| 13117 (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value)); | |
| 13118 } | |
| 13119 | |
| 13120 /** | |
| 13121 * Checks if `value` is a finite primitive number. | |
| 13122 * | |
| 13123 * **Note:** This method is based on | |
| 13124 * [`Number.isFinite`](https://mdn.io/Number/isFinite). | |
| 13125 * | |
| 13126 * @static | |
| 13127 * @memberOf _ | |
| 13128 * @since 0.1.0 | |
| 13129 * @category Lang | |
| 13130 * @param {*} value The value to check. | |
| 13131 * @returns {boolean} Returns `true` if `value` is a finite number, else `false`. | |
| 13132 * @example | |
| 13133 * | |
| 13134 * _.isFinite(3); | |
| 13135 * // => true | |
| 13136 * | |
| 13137 * _.isFinite(Number.MIN_VALUE); | |
| 13138 * // => true | |
| 13139 * | |
| 13140 * _.isFinite(Infinity); | |
| 13141 * // => false | |
| 13142 * | |
| 13143 * _.isFinite('3'); | |
| 13144 * // => false | |
| 13145 */ | |
| 13146 function isFinite(value) { | |
| 13147 return typeof value == 'number' && nativeIsFinite(value); | |
| 13148 } | |
| 13149 | |
| 13150 /** | |
| 13151 * Checks if `value` is classified as a `Function` object. | |
| 13152 * | |
| 13153 * @static | |
| 13154 * @memberOf _ | |
| 13155 * @since 0.1.0 | |
| 13156 * @category Lang | |
| 13157 * @param {*} value The value to check. | |
| 13158 * @returns {boolean} Returns `true` if `value` is a function, else `false`. | |
| 13159 * @example | |
| 13160 * | |
| 13161 * _.isFunction(_); | |
| 13162 * // => true | |
| 13163 * | |
| 13164 * _.isFunction(/abc/); | |
| 13165 * // => false | |
| 13166 */ | |
| 13167 function isFunction(value) { | |
| 13168 if (!isObject(value)) { | |
| 13169 return false; | |
| 13170 } | |
| 13171 // The use of `Object#toString` avoids issues with the `typeof` operator | |
| 13172 // in Safari 9 which returns 'object' for typed arrays and other constructors. | |
| 13173 var tag = baseGetTag(value); | |
| 13174 return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag; | |
| 13175 } | |
| 13176 | |
| 13177 /** | |
| 13178 * Checks if `value` is an integer. | |
| 13179 * | |
| 13180 * **Note:** This method is based on | |
| 13181 * [`Number.isInteger`](https://mdn.io/Number/isInteger). | |
| 13182 * | |
| 13183 * @static | |
| 13184 * @memberOf _ | |
| 13185 * @since 4.0.0 | |
| 13186 * @category Lang | |
| 13187 * @param {*} value The value to check. | |
| 13188 * @returns {boolean} Returns `true` if `value` is an integer, else `false`. | |
| 13189 * @example | |
| 13190 * | |
| 13191 * _.isInteger(3); | |
| 13192 * // => true | |
| 13193 * | |
| 13194 * _.isInteger(Number.MIN_VALUE); | |
| 13195 * // => false | |
| 13196 * | |
| 13197 * _.isInteger(Infinity); | |
| 13198 * // => false | |
| 13199 * | |
| 13200 * _.isInteger('3'); | |
| 13201 * // => false | |
| 13202 */ | |
| 13203 function isInteger(value) { | |
| 13204 return typeof value == 'number' && value == toInteger(value); | |
| 13205 } | |
| 13206 | |
| 13207 /** | |
| 13208 * Checks if `value` is a valid array-like length. | |
| 13209 * | |
| 13210 * **Note:** This method is loosely based on | |
| 13211 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). | |
| 13212 * | |
| 13213 * @static | |
| 13214 * @memberOf _ | |
| 13215 * @since 4.0.0 | |
| 13216 * @category Lang | |
| 13217 * @param {*} value The value to check. | |
| 13218 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. | |
| 13219 * @example | |
| 13220 * | |
| 13221 * _.isLength(3); | |
| 13222 * // => true | |
| 13223 * | |
| 13224 * _.isLength(Number.MIN_VALUE); | |
| 13225 * // => false | |
| 13226 * | |
| 13227 * _.isLength(Infinity); | |
| 13228 * // => false | |
| 13229 * | |
| 13230 * _.isLength('3'); | |
| 13231 * // => false | |
| 13232 */ | |
| 13233 function isLength(value) { | |
| 13234 return typeof value == 'number' && | |
| 13235 value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER; | |
| 13236 } | |
| 13237 | |
| 13238 /** | |
| 13239 * Checks if `value` is the | |
| 13240 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types) | |
| 13241 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) | |
| 13242 * | |
| 13243 * @static | |
| 13244 * @memberOf _ | |
| 13245 * @since 0.1.0 | |
| 13246 * @category Lang | |
| 13247 * @param {*} value The value to check. | |
| 13248 * @returns {boolean} Returns `true` if `value` is an object, else `false`. | |
| 13249 * @example | |
| 13250 * | |
| 13251 * _.isObject({}); | |
| 13252 * // => true | |
| 13253 * | |
| 13254 * _.isObject([1, 2, 3]); | |
| 13255 * // => true | |
| 13256 * | |
| 13257 * _.isObject(_.noop); | |
| 13258 * // => true | |
| 13259 * | |
| 13260 * _.isObject(null); | |
| 13261 * // => false | |
| 13262 */ | |
| 13263 function isObject(value) { | |
| 13264 var type = typeof value; | |
| 13265 return value != null && (type == 'object' || type == 'function'); | |
| 13266 } | |
| 13267 | |
| 13268 /** | |
| 13269 * Checks if `value` is object-like. A value is object-like if it's not `null` | |
| 13270 * and has a `typeof` result of "object". | |
| 13271 * | |
| 13272 * @static | |
| 13273 * @memberOf _ | |
| 13274 * @since 4.0.0 | |
| 13275 * @category Lang | |
| 13276 * @param {*} value The value to check. | |
| 13277 * @returns {boolean} Returns `true` if `value` is object-like, else `false`. | |
| 13278 * @example | |
| 13279 * | |
| 13280 * _.isObjectLike({}); | |
| 13281 * // => true | |
| 13282 * | |
| 13283 * _.isObjectLike([1, 2, 3]); | |
| 13284 * // => true | |
| 13285 * | |
| 13286 * _.isObjectLike(_.noop); | |
| 13287 * // => false | |
| 13288 * | |
| 13289 * _.isObjectLike(null); | |
| 13290 * // => false | |
| 13291 */ | |
| 13292 function isObjectLike(value) { | |
| 13293 return value != null && typeof value == 'object'; | |
| 13294 } | |
| 13295 | |
| 13296 /** | |
| 13297 * Checks if `value` is classified as a `Map` object. | |
| 13298 * | |
| 13299 * @static | |
| 13300 * @memberOf _ | |
| 13301 * @since 4.3.0 | |
| 13302 * @category Lang | |
| 13303 * @param {*} value The value to check. | |
| 13304 * @returns {boolean} Returns `true` if `value` is a map, else `false`. | |
| 13305 * @example | |
| 13306 * | |
| 13307 * _.isMap(new Map); | |
| 13308 * // => true | |
| 13309 * | |
| 13310 * _.isMap(new WeakMap); | |
| 13311 * // => false | |
| 13312 */ | |
| 13313 var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap; | |
| 13314 | |
| 13315 /** | |
| 13316 * Performs a partial deep comparison between `object` and `source` to | |
| 13317 * determine if `object` contains equivalent property values. | |
| 13318 * | |
| 13319 * **Note:** This method is equivalent to `_.matches` when `source` is | |
| 13320 * partially applied. | |
| 13321 * | |
| 13322 * Partial comparisons will match empty array and empty object `source` | |
| 13323 * values against any array or object value, respectively. See `_.isEqual` | |
| 13324 * for a list of supported value comparisons. | |
| 13325 * | |
| 13326 * @static | |
| 13327 * @memberOf _ | |
| 13328 * @since 3.0.0 | |
| 13329 * @category Lang | |
| 13330 * @param {Object} object The object to inspect. | |
| 13331 * @param {Object} source The object of property values to match. | |
| 13332 * @returns {boolean} Returns `true` if `object` is a match, else `false`. | |
| 13333 * @example | |
| 13334 * | |
| 13335 * var object = { 'a': 1, 'b': 2 }; | |
| 13336 * | |
| 13337 * _.isMatch(object, { 'b': 2 }); | |
| 13338 * // => true | |
| 13339 * | |
| 13340 * _.isMatch(object, { 'b': 1 }); | |
| 13341 * // => false | |
| 13342 */ | |
| 13343 function isMatch(object, source) { | |
| 13344 return object === source || baseIsMatch(object, source, getMatchData(source)); | |
| 13345 } | |
| 13346 | |
| 13347 /** | |
| 13348 * This method is like `_.isMatch` except that it accepts `customizer` which | |
| 13349 * is invoked to compare values. If `customizer` returns `undefined`, comparisons | |
| 13350 * are handled by the method instead. The `customizer` is invoked with five | |
| 13351 * arguments: (objValue, srcValue, index|key, object, source). | |
| 13352 * | |
| 13353 * @static | |
| 13354 * @memberOf _ | |
| 13355 * @since 4.0.0 | |
| 13356 * @category Lang | |
| 13357 * @param {Object} object The object to inspect. | |
| 13358 * @param {Object} source The object of property values to match. | |
| 13359 * @param {Function} [customizer] The function to customize comparisons. | |
| 13360 * @returns {boolean} Returns `true` if `object` is a match, else `false`. | |
| 13361 * @example | |
| 13362 * | |
| 13363 * function isGreeting(value) { | |
| 13364 * return /^h(?:i|ello)$/.test(value); | |
| 13365 * } | |
| 13366 * | |
| 13367 * function customizer(objValue, srcValue) { | |
| 13368 * if (isGreeting(objValue) && isGreeting(srcValue)) { | |
| 13369 * return true; | |
| 13370 * } | |
| 13371 * } | |
| 13372 * | |
| 13373 * var object = { 'greeting': 'hello' }; | |
| 13374 * var source = { 'greeting': 'hi' }; | |
| 13375 * | |
| 13376 * _.isMatchWith(object, source, customizer); | |
| 13377 * // => true | |
| 13378 */ | |
| 13379 function isMatchWith(object, source, customizer) { | |
| 13380 customizer = typeof customizer == 'function' ? customizer : undefined; | |
| 13381 return baseIsMatch(object, source, getMatchData(source), customizer); | |
| 13382 } | |
| 13383 | |
| 13384 /** | |
| 13385 * Checks if `value` is `NaN`. | |
| 13386 * | |
| 13387 * **Note:** This method is based on | |
| 13388 * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as | |
| 13389 * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for | |
| 13390 * `undefined` and other non-number values. | |
| 13391 * | |
| 13392 * @static | |
| 13393 * @memberOf _ | |
| 13394 * @since 0.1.0 | |
| 13395 * @category Lang | |
| 13396 * @param {*} value The value to check. | |
| 13397 * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. | |
| 13398 * @example | |
| 13399 * | |
| 13400 * _.isNaN(NaN); | |
| 13401 * // => true | |
| 13402 * | |
| 13403 * _.isNaN(new Number(NaN)); | |
| 13404 * // => true | |
| 13405 * | |
| 13406 * isNaN(undefined); | |
| 13407 * // => true | |
| 13408 * | |
| 13409 * _.isNaN(undefined); | |
| 13410 * // => false | |
| 13411 */ | |
| 13412 function isNaN(value) { | |
| 13413 // An `NaN` primitive is the only value that is not equal to itself. | |
| 13414 // Perform the `toStringTag` check first to avoid errors with some | |
| 13415 // ActiveX objects in IE. | |
| 13416 return isNumber(value) && value != +value; | |
| 13417 } | |
| 13418 | |
| 13419 /** | |
| 13420 * Checks if `value` is a pristine native function. | |
| 13421 * | |
| 13422 * **Note:** This method can't reliably detect native functions in the presence | |
| 13423 * of the core-js package because core-js circumvents this kind of detection. | |
| 13424 * Despite multiple requests, the core-js maintainer has made it clear: any | |
| 13425 * attempt to fix the detection will be obstructed. As a result, we're left | |
| 13426 * with little choice but to throw an error. Unfortunately, this also affects | |
| 13427 * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill), | |
| 13428 * which rely on core-js. | |
| 13429 * | |
| 13430 * @static | |
| 13431 * @memberOf _ | |
| 13432 * @since 3.0.0 | |
| 13433 * @category Lang | |
| 13434 * @param {*} value The value to check. | |
| 13435 * @returns {boolean} Returns `true` if `value` is a native function, | |
| 13436 * else `false`. | |
| 13437 * @example | |
| 13438 * | |
| 13439 * _.isNative(Array.prototype.push); | |
| 13440 * // => true | |
| 13441 * | |
| 13442 * _.isNative(_); | |
| 13443 * // => false | |
| 13444 */ | |
| 13445 function isNative(value) { | |
| 13446 if (isMaskable(value)) { | |
| 13447 throw new Error(CORE_ERROR_TEXT); | |
| 13448 } | |
| 13449 return baseIsNative(value); | |
| 13450 } | |
| 13451 | |
| 13452 /** | |
| 13453 * Checks if `value` is `null`. | |
| 13454 * | |
| 13455 * @static | |
| 13456 * @memberOf _ | |
| 13457 * @since 0.1.0 | |
| 13458 * @category Lang | |
| 13459 * @param {*} value The value to check. | |
| 13460 * @returns {boolean} Returns `true` if `value` is `null`, else `false`. | |
| 13461 * @example | |
| 13462 * | |
| 13463 * _.isNull(null); | |
| 13464 * // => true | |
| 13465 * | |
| 13466 * _.isNull(void 0); | |
| 13467 * // => false | |
| 13468 */ | |
| 13469 function isNull(value) { | |
| 13470 return value === null; | |
| 13471 } | |
| 13472 | |
| 13473 /** | |
| 13474 * Checks if `value` is `null` or `undefined`. | |
| 13475 * | |
| 13476 * @static | |
| 13477 * @memberOf _ | |
| 13478 * @since 4.0.0 | |
| 13479 * @category Lang | |
| 13480 * @param {*} value The value to check. | |
| 13481 * @returns {boolean} Returns `true` if `value` is nullish, else `false`. | |
| 13482 * @example | |
| 13483 * | |
| 13484 * _.isNil(null); | |
| 13485 * // => true | |
| 13486 * | |
| 13487 * _.isNil(void 0); | |
| 13488 * // => true | |
| 13489 * | |
| 13490 * _.isNil(NaN); | |
| 13491 * // => false | |
| 13492 */ | |
| 13493 function isNil(value) { | |
| 13494 return value == null; | |
| 13495 } | |
| 13496 | |
| 13497 /** | |
| 13498 * Checks if `value` is classified as a `Number` primitive or object. | |
| 13499 * | |
| 13500 * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are | |
| 13501 * classified as numbers, use the `_.isFinite` method. | |
| 13502 * | |
| 13503 * @static | |
| 13504 * @memberOf _ | |
| 13505 * @since 0.1.0 | |
| 13506 * @category Lang | |
| 13507 * @param {*} value The value to check. | |
| 13508 * @returns {boolean} Returns `true` if `value` is a number, else `false`. | |
| 13509 * @example | |
| 13510 * | |
| 13511 * _.isNumber(3); | |
| 13512 * // => true | |
| 13513 * | |
| 13514 * _.isNumber(Number.MIN_VALUE); | |
| 13515 * // => true | |
| 13516 * | |
| 13517 * _.isNumber(Infinity); | |
| 13518 * // => true | |
| 13519 * | |
| 13520 * _.isNumber('3'); | |
| 13521 * // => false | |
| 13522 */ | |
| 13523 function isNumber(value) { | |
| 13524 return typeof value == 'number' || | |
| 13525 (isObjectLike(value) && baseGetTag(value) == numberTag); | |
| 13526 } | |
| 13527 | |
| 13528 /** | |
| 13529 * Checks if `value` is a plain object, that is, an object created by the | |
| 13530 * `Object` constructor or one with a `[[Prototype]]` of `null`. | |
| 13531 * | |
| 13532 * @static | |
| 13533 * @memberOf _ | |
| 13534 * @since 0.8.0 | |
| 13535 * @category Lang | |
| 13536 * @param {*} value The value to check. | |
| 13537 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. | |
| 13538 * @example | |
| 13539 * | |
| 13540 * function Foo() { | |
| 13541 * this.a = 1; | |
| 13542 * } | |
| 13543 * | |
| 13544 * _.isPlainObject(new Foo); | |
| 13545 * // => false | |
| 13546 * | |
| 13547 * _.isPlainObject([1, 2, 3]); | |
| 13548 * // => false | |
| 13549 * | |
| 13550 * _.isPlainObject({ 'x': 0, 'y': 0 }); | |
| 13551 * // => true | |
| 13552 * | |
| 13553 * _.isPlainObject(Object.create(null)); | |
| 13554 * // => true | |
| 13555 */ | |
| 13556 function isPlainObject(value) { | |
| 13557 if (!isObjectLike(value) || baseGetTag(value) != objectTag) { | |
| 13558 return false; | |
| 13559 } | |
| 13560 var proto = getPrototype(value); | |
| 13561 if (proto === null) { | |
| 13562 return true; | |
| 13563 } | |
| 13564 var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor; | |
| 13565 return typeof Ctor == 'function' && Ctor instanceof Ctor && | |
| 13566 funcToString.call(Ctor) == objectCtorString; | |
| 13567 } | |
| 13568 | |
| 13569 /** | |
| 13570 * Checks if `value` is classified as a `RegExp` object. | |
| 13571 * | |
| 13572 * @static | |
| 13573 * @memberOf _ | |
| 13574 * @since 0.1.0 | |
| 13575 * @category Lang | |
| 13576 * @param {*} value The value to check. | |
| 13577 * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. | |
| 13578 * @example | |
| 13579 * | |
| 13580 * _.isRegExp(/abc/); | |
| 13581 * // => true | |
| 13582 * | |
| 13583 * _.isRegExp('/abc/'); | |
| 13584 * // => false | |
| 13585 */ | |
| 13586 var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp; | |
| 13587 | |
| 13588 /** | |
| 13589 * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754 | |
| 13590 * double precision number which isn't the result of a rounded unsafe integer. | |
| 13591 * | |
| 13592 * **Note:** This method is based on | |
| 13593 * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger). | |
| 13594 * | |
| 13595 * @static | |
| 13596 * @memberOf _ | |
| 13597 * @since 4.0.0 | |
| 13598 * @category Lang | |
| 13599 * @param {*} value The value to check. | |
| 13600 * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`. | |
| 13601 * @example | |
| 13602 * | |
| 13603 * _.isSafeInteger(3); | |
| 13604 * // => true | |
| 13605 * | |
| 13606 * _.isSafeInteger(Number.MIN_VALUE); | |
| 13607 * // => false | |
| 13608 * | |
| 13609 * _.isSafeInteger(Infinity); | |
| 13610 * // => false | |
| 13611 * | |
| 13612 * _.isSafeInteger('3'); | |
| 13613 * // => false | |
| 13614 */ | |
| 13615 function isSafeInteger(value) { | |
| 13616 return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER; | |
| 13617 } | |
| 13618 | |
| 13619 /** | |
| 13620 * Checks if `value` is classified as a `Set` object. | |
| 13621 * | |
| 13622 * @static | |
| 13623 * @memberOf _ | |
| 13624 * @since 4.3.0 | |
| 13625 * @category Lang | |
| 13626 * @param {*} value The value to check. | |
| 13627 * @returns {boolean} Returns `true` if `value` is a set, else `false`. | |
| 13628 * @example | |
| 13629 * | |
| 13630 * _.isSet(new Set); | |
| 13631 * // => true | |
| 13632 * | |
| 13633 * _.isSet(new WeakSet); | |
| 13634 * // => false | |
| 13635 */ | |
| 13636 var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet; | |
| 13637 | |
| 13638 /** | |
| 13639 * Checks if `value` is classified as a `String` primitive or object. | |
| 13640 * | |
| 13641 * @static | |
| 13642 * @since 0.1.0 | |
| 13643 * @memberOf _ | |
| 13644 * @category Lang | |
| 13645 * @param {*} value The value to check. | |
| 13646 * @returns {boolean} Returns `true` if `value` is a string, else `false`. | |
| 13647 * @example | |
| 13648 * | |
| 13649 * _.isString('abc'); | |
| 13650 * // => true | |
| 13651 * | |
| 13652 * _.isString(1); | |
| 13653 * // => false | |
| 13654 */ | |
| 13655 function isString(value) { | |
| 13656 return typeof value == 'string' || | |
| 13657 (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag); | |
| 13658 } | |
| 13659 | |
| 13660 /** | |
| 13661 * Checks if `value` is classified as a `Symbol` primitive or object. | |
| 13662 * | |
| 13663 * @static | |
| 13664 * @memberOf _ | |
| 13665 * @since 4.0.0 | |
| 13666 * @category Lang | |
| 13667 * @param {*} value The value to check. | |
| 13668 * @returns {boolean} Returns `true` if `value` is a symbol, else `false`. | |
| 13669 * @example | |
| 13670 * | |
| 13671 * _.isSymbol(Symbol.iterator); | |
| 13672 * // => true | |
| 13673 * | |
| 13674 * _.isSymbol('abc'); | |
| 13675 * // => false | |
| 13676 */ | |
| 13677 function isSymbol(value) { | |
| 13678 return typeof value == 'symbol' || | |
| 13679 (isObjectLike(value) && baseGetTag(value) == symbolTag); | |
| 13680 } | |
| 13681 | |
| 13682 /** | |
| 13683 * Checks if `value` is classified as a typed array. | |
| 13684 * | |
| 13685 * @static | |
| 13686 * @memberOf _ | |
| 13687 * @since 3.0.0 | |
| 13688 * @category Lang | |
| 13689 * @param {*} value The value to check. | |
| 13690 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. | |
| 13691 * @example | |
| 13692 * | |
| 13693 * _.isTypedArray(new Uint8Array); | |
| 13694 * // => true | |
| 13695 * | |
| 13696 * _.isTypedArray([]); | |
| 13697 * // => false | |
| 13698 */ | |
| 13699 var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray; | |
| 13700 | |
| 13701 /** | |
| 13702 * Checks if `value` is `undefined`. | |
| 13703 * | |
| 13704 * @static | |
| 13705 * @since 0.1.0 | |
| 13706 * @memberOf _ | |
| 13707 * @category Lang | |
| 13708 * @param {*} value The value to check. | |
| 13709 * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. | |
| 13710 * @example | |
| 13711 * | |
| 13712 * _.isUndefined(void 0); | |
| 13713 * // => true | |
| 13714 * | |
| 13715 * _.isUndefined(null); | |
| 13716 * // => false | |
| 13717 */ | |
| 13718 function isUndefined(value) { | |
| 13719 return value === undefined; | |
| 13720 } | |
| 13721 | |
| 13722 /** | |
| 13723 * Checks if `value` is classified as a `WeakMap` object. | |
| 13724 * | |
| 13725 * @static | |
| 13726 * @memberOf _ | |
| 13727 * @since 4.3.0 | |
| 13728 * @category Lang | |
| 13729 * @param {*} value The value to check. | |
| 13730 * @returns {boolean} Returns `true` if `value` is a weak map, else `false`. | |
| 13731 * @example | |
| 13732 * | |
| 13733 * _.isWeakMap(new WeakMap); | |
| 13734 * // => true | |
| 13735 * | |
| 13736 * _.isWeakMap(new Map); | |
| 13737 * // => false | |
| 13738 */ | |
| 13739 function isWeakMap(value) { | |
| 13740 return isObjectLike(value) && getTag(value) == weakMapTag; | |
| 13741 } | |
| 13742 | |
| 13743 /** | |
| 13744 * Checks if `value` is classified as a `WeakSet` object. | |
| 13745 * | |
| 13746 * @static | |
| 13747 * @memberOf _ | |
| 13748 * @since 4.3.0 | |
| 13749 * @category Lang | |
| 13750 * @param {*} value The value to check. | |
| 13751 * @returns {boolean} Returns `true` if `value` is a weak set, else `false`. | |
| 13752 * @example | |
| 13753 * | |
| 13754 * _.isWeakSet(new WeakSet); | |
| 13755 * // => true | |
| 13756 * | |
| 13757 * _.isWeakSet(new Set); | |
| 13758 * // => false | |
| 13759 */ | |
| 13760 function isWeakSet(value) { | |
| 13761 return isObjectLike(value) && baseGetTag(value) == weakSetTag; | |
| 13762 } | |
| 13763 | |
| 13764 /** | |
| 13765 * Checks if `value` is less than `other`. | |
| 13766 * | |
| 13767 * @static | |
| 13768 * @memberOf _ | |
| 13769 * @since 3.9.0 | |
| 13770 * @category Lang | |
| 13771 * @param {*} value The value to compare. | |
| 13772 * @param {*} other The other value to compare. | |
| 13773 * @returns {boolean} Returns `true` if `value` is less than `other`, | |
| 13774 * else `false`. | |
| 13775 * @see _.gt | |
| 13776 * @example | |
| 13777 * | |
| 13778 * _.lt(1, 3); | |
| 13779 * // => true | |
| 13780 * | |
| 13781 * _.lt(3, 3); | |
| 13782 * // => false | |
| 13783 * | |
| 13784 * _.lt(3, 1); | |
| 13785 * // => false | |
| 13786 */ | |
| 13787 var lt = createRelationalOperation(baseLt); | |
| 13788 | |
| 13789 /** | |
| 13790 * Checks if `value` is less than or equal to `other`. | |
| 13791 * | |
| 13792 * @static | |
| 13793 * @memberOf _ | |
| 13794 * @since 3.9.0 | |
| 13795 * @category Lang | |
| 13796 * @param {*} value The value to compare. | |
| 13797 * @param {*} other The other value to compare. | |
| 13798 * @returns {boolean} Returns `true` if `value` is less than or equal to | |
| 13799 * `other`, else `false`. | |
| 13800 * @see _.gte | |
| 13801 * @example | |
| 13802 * | |
| 13803 * _.lte(1, 3); | |
| 13804 * // => true | |
| 13805 * | |
| 13806 * _.lte(3, 3); | |
| 13807 * // => true | |
| 13808 * | |
| 13809 * _.lte(3, 1); | |
| 13810 * // => false | |
| 13811 */ | |
| 13812 var lte = createRelationalOperation(function(value, other) { | |
| 13813 return value <= other; | |
| 13814 }); | |
| 13815 | |
| 13816 /** | |
| 13817 * Converts `value` to an array. | |
| 13818 * | |
| 13819 * @static | |
| 13820 * @since 0.1.0 | |
| 13821 * @memberOf _ | |
| 13822 * @category Lang | |
| 13823 * @param {*} value The value to convert. | |
| 13824 * @returns {Array} Returns the converted array. | |
| 13825 * @example | |
| 13826 * | |
| 13827 * _.toArray({ 'a': 1, 'b': 2 }); | |
| 13828 * // => [1, 2] | |
| 13829 * | |
| 13830 * _.toArray('abc'); | |
| 13831 * // => ['a', 'b', 'c'] | |
| 13832 * | |
| 13833 * _.toArray(1); | |
| 13834 * // => [] | |
| 13835 * | |
| 13836 * _.toArray(null); | |
| 13837 * // => [] | |
| 13838 */ | |
| 13839 function toArray(value) { | |
| 13840 if (!value) { | |
| 13841 return []; | |
| 13842 } | |
| 13843 if (isArrayLike(value)) { | |
| 13844 return isString(value) ? stringToArray(value) : copyArray(value); | |
| 13845 } | |
| 13846 if (symIterator && value[symIterator]) { | |
| 13847 return iteratorToArray(value[symIterator]()); | |
| 13848 } | |
| 13849 var tag = getTag(value), | |
| 13850 func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values); | |
| 13851 | |
| 13852 return func(value); | |
| 13853 } | |
| 13854 | |
| 13855 /** | |
| 13856 * Converts `value` to a finite number. | |
| 13857 * | |
| 13858 * @static | |
| 13859 * @memberOf _ | |
| 13860 * @since 4.12.0 | |
| 13861 * @category Lang | |
| 13862 * @param {*} value The value to convert. | |
| 13863 * @returns {number} Returns the converted number. | |
| 13864 * @example | |
| 13865 * | |
| 13866 * _.toFinite(3.2); | |
| 13867 * // => 3.2 | |
| 13868 * | |
| 13869 * _.toFinite(Number.MIN_VALUE); | |
| 13870 * // => 5e-324 | |
| 13871 * | |
| 13872 * _.toFinite(Infinity); | |
| 13873 * // => 1.7976931348623157e+308 | |
| 13874 * | |
| 13875 * _.toFinite('3.2'); | |
| 13876 * // => 3.2 | |
| 13877 */ | |
| 13878 function toFinite(value) { | |
| 13879 if (!value) { | |
| 13880 return value === 0 ? value : 0; | |
| 13881 } | |
| 13882 value = toNumber(value); | |
| 13883 if (value === INFINITY || value === -INFINITY) { | |
| 13884 var sign = (value < 0 ? -1 : 1); | |
| 13885 return sign * MAX_INTEGER; | |
| 13886 } | |
| 13887 return value === value ? value : 0; | |
| 13888 } | |
| 13889 | |
| 13890 /** | |
| 13891 * Converts `value` to an integer. | |
| 13892 * | |
| 13893 * **Note:** This method is loosely based on | |
| 13894 * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger). | |
| 13895 * | |
| 13896 * @static | |
| 13897 * @memberOf _ | |
| 13898 * @since 4.0.0 | |
| 13899 * @category Lang | |
| 13900 * @param {*} value The value to convert. | |
| 13901 * @returns {number} Returns the converted integer. | |
| 13902 * @example | |
| 13903 * | |
| 13904 * _.toInteger(3.2); | |
| 13905 * // => 3 | |
| 13906 * | |
| 13907 * _.toInteger(Number.MIN_VALUE); | |
| 13908 * // => 0 | |
| 13909 * | |
| 13910 * _.toInteger(Infinity); | |
| 13911 * // => 1.7976931348623157e+308 | |
| 13912 * | |
| 13913 * _.toInteger('3.2'); | |
| 13914 * // => 3 | |
| 13915 */ | |
| 13916 function toInteger(value) { | |
| 13917 var result = toFinite(value), | |
| 13918 remainder = result % 1; | |
| 13919 | |
| 13920 return result === result ? (remainder ? result - remainder : result) : 0; | |
| 13921 } | |
| 13922 | |
| 13923 /** | |
| 13924 * Converts `value` to an integer suitable for use as the length of an | |
| 13925 * array-like object. | |
| 13926 * | |
| 13927 * **Note:** This method is based on | |
| 13928 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). | |
| 13929 * | |
| 13930 * @static | |
| 13931 * @memberOf _ | |
| 13932 * @since 4.0.0 | |
| 13933 * @category Lang | |
| 13934 * @param {*} value The value to convert. | |
| 13935 * @returns {number} Returns the converted integer. | |
| 13936 * @example | |
| 13937 * | |
| 13938 * _.toLength(3.2); | |
| 13939 * // => 3 | |
| 13940 * | |
| 13941 * _.toLength(Number.MIN_VALUE); | |
| 13942 * // => 0 | |
| 13943 * | |
| 13944 * _.toLength(Infinity); | |
| 13945 * // => 4294967295 | |
| 13946 * | |
| 13947 * _.toLength('3.2'); | |
| 13948 * // => 3 | |
| 13949 */ | |
| 13950 function toLength(value) { | |
| 13951 return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0; | |
| 13952 } | |
| 13953 | |
| 13954 /** | |
| 13955 * Converts `value` to a number. | |
| 13956 * | |
| 13957 * @static | |
| 13958 * @memberOf _ | |
| 13959 * @since 4.0.0 | |
| 13960 * @category Lang | |
| 13961 * @param {*} value The value to process. | |
| 13962 * @returns {number} Returns the number. | |
| 13963 * @example | |
| 13964 * | |
| 13965 * _.toNumber(3.2); | |
| 13966 * // => 3.2 | |
| 13967 * | |
| 13968 * _.toNumber(Number.MIN_VALUE); | |
| 13969 * // => 5e-324 | |
| 13970 * | |
| 13971 * _.toNumber(Infinity); | |
| 13972 * // => Infinity | |
| 13973 * | |
| 13974 * _.toNumber('3.2'); | |
| 13975 * // => 3.2 | |
| 13976 */ | |
| 13977 function toNumber(value) { | |
| 13978 if (typeof value == 'number') { | |
| 13979 return value; | |
| 13980 } | |
| 13981 if (isSymbol(value)) { | |
| 13982 return NAN; | |
| 13983 } | |
| 13984 if (isObject(value)) { | |
| 13985 var other = typeof value.valueOf == 'function' ? value.valueOf() : value; | |
| 13986 value = isObject(other) ? (other + '') : other; | |
| 13987 } | |
| 13988 if (typeof value != 'string') { | |
| 13989 return value === 0 ? value : +value; | |
| 13990 } | |
| 13991 value = value.replace(reTrim, ''); | |
| 13992 var isBinary = reIsBinary.test(value); | |
| 13993 return (isBinary || reIsOctal.test(value)) | |
| 13994 ? freeParseInt(value.slice(2), isBinary ? 2 : 8) | |
| 13995 : (reIsBadHex.test(value) ? NAN : +value); | |
| 13996 } | |
| 13997 | |
| 13998 /** | |
| 13999 * Converts `value` to a plain object flattening inherited enumerable string | |
| 14000 * keyed properties of `value` to own properties of the plain object. | |
| 14001 * | |
| 14002 * @static | |
| 14003 * @memberOf _ | |
| 14004 * @since 3.0.0 | |
| 14005 * @category Lang | |
| 14006 * @param {*} value The value to convert. | |
| 14007 * @returns {Object} Returns the converted plain object. | |
| 14008 * @example | |
| 14009 * | |
| 14010 * function Foo() { | |
| 14011 * this.b = 2; | |
| 14012 * } | |
| 14013 * | |
| 14014 * Foo.prototype.c = 3; | |
| 14015 * | |
| 14016 * _.assign({ 'a': 1 }, new Foo); | |
| 14017 * // => { 'a': 1, 'b': 2 } | |
| 14018 * | |
| 14019 * _.assign({ 'a': 1 }, _.toPlainObject(new Foo)); | |
| 14020 * // => { 'a': 1, 'b': 2, 'c': 3 } | |
| 14021 */ | |
| 14022 function toPlainObject(value) { | |
| 14023 return copyObject(value, keysIn(value)); | |
| 14024 } | |
| 14025 | |
| 14026 /** | |
| 14027 * Converts `value` to a safe integer. A safe integer can be compared and | |
| 14028 * represented correctly. | |
| 14029 * | |
| 14030 * @static | |
| 14031 * @memberOf _ | |
| 14032 * @since 4.0.0 | |
| 14033 * @category Lang | |
| 14034 * @param {*} value The value to convert. | |
| 14035 * @returns {number} Returns the converted integer. | |
| 14036 * @example | |
| 14037 * | |
| 14038 * _.toSafeInteger(3.2); | |
| 14039 * // => 3 | |
| 14040 * | |
| 14041 * _.toSafeInteger(Number.MIN_VALUE); | |
| 14042 * // => 0 | |
| 14043 * | |
| 14044 * _.toSafeInteger(Infinity); | |
| 14045 * // => 9007199254740991 | |
| 14046 * | |
| 14047 * _.toSafeInteger('3.2'); | |
| 14048 * // => 3 | |
| 14049 */ | |
| 14050 function toSafeInteger(value) { | |
| 14051 return value | |
| 14052 ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) | |
| 14053 : (value === 0 ? value : 0); | |
| 14054 } | |
| 14055 | |
| 14056 /** | |
| 14057 * Converts `value` to a string. An empty string is returned for `null` | |
| 14058 * and `undefined` values. The sign of `-0` is preserved. | |
| 14059 * | |
| 14060 * @static | |
| 14061 * @memberOf _ | |
| 14062 * @since 4.0.0 | |
| 14063 * @category Lang | |
| 14064 * @param {*} value The value to convert. | |
| 14065 * @returns {string} Returns the converted string. | |
| 14066 * @example | |
| 14067 * | |
| 14068 * _.toString(null); | |
| 14069 * // => '' | |
| 14070 * | |
| 14071 * _.toString(-0); | |
| 14072 * // => '-0' | |
| 14073 * | |
| 14074 * _.toString([1, 2, 3]); | |
| 14075 * // => '1,2,3' | |
| 14076 */ | |
| 14077 function toString(value) { | |
| 14078 return value == null ? '' : baseToString(value); | |
| 14079 } | |
| 14080 | |
| 14081 /*------------------------------------------------------------------------*/ | |
| 14082 | |
| 14083 /** | |
| 14084 * Assigns own enumerable string keyed properties of source objects to the | |
| 14085 * destination object. Source objects are applied from left to right. | |
| 14086 * Subsequent sources overwrite property assignments of previous sources. | |
| 14087 * | |
| 14088 * **Note:** This method mutates `object` and is loosely based on | |
| 14089 * [`Object.assign`](https://mdn.io/Object/assign). | |
| 14090 * | |
| 14091 * @static | |
| 14092 * @memberOf _ | |
| 14093 * @since 0.10.0 | |
| 14094 * @category Object | |
| 14095 * @param {Object} object The destination object. | |
| 14096 * @param {...Object} [sources] The source objects. | |
| 14097 * @returns {Object} Returns `object`. | |
| 14098 * @see _.assignIn | |
| 14099 * @example | |
| 14100 * | |
| 14101 * function Foo() { | |
| 14102 * this.a = 1; | |
| 14103 * } | |
| 14104 * | |
| 14105 * function Bar() { | |
| 14106 * this.c = 3; | |
| 14107 * } | |
| 14108 * | |
| 14109 * Foo.prototype.b = 2; | |
| 14110 * Bar.prototype.d = 4; | |
| 14111 * | |
| 14112 * _.assign({ 'a': 0 }, new Foo, new Bar); | |
| 14113 * // => { 'a': 1, 'c': 3 } | |
| 14114 */ | |
| 14115 var assign = createAssigner(function(object, source) { | |
| 14116 if (isPrototype(source) || isArrayLike(source)) { | |
| 14117 copyObject(source, keys(source), object); | |
| 14118 return; | |
| 14119 } | |
| 14120 for (var key in source) { | |
| 14121 if (hasOwnProperty.call(source, key)) { | |
| 14122 assignValue(object, key, source[key]); | |
| 14123 } | |
| 14124 } | |
| 14125 }); | |
| 14126 | |
| 14127 /** | |
| 14128 * This method is like `_.assign` except that it iterates over own and | |
| 14129 * inherited source properties. | |
| 14130 * | |
| 14131 * **Note:** This method mutates `object`. | |
| 14132 * | |
| 14133 * @static | |
| 14134 * @memberOf _ | |
| 14135 * @since 4.0.0 | |
| 14136 * @alias extend | |
| 14137 * @category Object | |
| 14138 * @param {Object} object The destination object. | |
| 14139 * @param {...Object} [sources] The source objects. | |
| 14140 * @returns {Object} Returns `object`. | |
| 14141 * @see _.assign | |
| 14142 * @example | |
| 14143 * | |
| 14144 * function Foo() { | |
| 14145 * this.a = 1; | |
| 14146 * } | |
| 14147 * | |
| 14148 * function Bar() { | |
| 14149 * this.c = 3; | |
| 14150 * } | |
| 14151 * | |
| 14152 * Foo.prototype.b = 2; | |
| 14153 * Bar.prototype.d = 4; | |
| 14154 * | |
| 14155 * _.assignIn({ 'a': 0 }, new Foo, new Bar); | |
| 14156 * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 } | |
| 14157 */ | |
| 14158 var assignIn = createAssigner(function(object, source) { | |
| 14159 copyObject(source, keysIn(source), object); | |
| 14160 }); | |
| 14161 | |
| 14162 /** | |
| 14163 * This method is like `_.assignIn` except that it accepts `customizer` | |
| 14164 * which is invoked to produce the assigned values. If `customizer` returns | |
| 14165 * `undefined`, assignment is handled by the method instead. The `customizer` | |
| 14166 * is invoked with five arguments: (objValue, srcValue, key, object, source). | |
| 14167 * | |
| 14168 * **Note:** This method mutates `object`. | |
| 14169 * | |
| 14170 * @static | |
| 14171 * @memberOf _ | |
| 14172 * @since 4.0.0 | |
| 14173 * @alias extendWith | |
| 14174 * @category Object | |
| 14175 * @param {Object} object The destination object. | |
| 14176 * @param {...Object} sources The source objects. | |
| 14177 * @param {Function} [customizer] The function to customize assigned values. | |
| 14178 * @returns {Object} Returns `object`. | |
| 14179 * @see _.assignWith | |
| 14180 * @example | |
| 14181 * | |
| 14182 * function customizer(objValue, srcValue) { | |
| 14183 * return _.isUndefined(objValue) ? srcValue : objValue; | |
| 14184 * } | |
| 14185 * | |
| 14186 * var defaults = _.partialRight(_.assignInWith, customizer); | |
| 14187 * | |
| 14188 * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); | |
| 14189 * // => { 'a': 1, 'b': 2 } | |
| 14190 */ | |
| 14191 var assignInWith = createAssigner(function(object, source, srcIndex, customizer) { | |
| 14192 copyObject(source, keysIn(source), object, customizer); | |
| 14193 }); | |
| 14194 | |
| 14195 /** | |
| 14196 * This method is like `_.assign` except that it accepts `customizer` | |
| 14197 * which is invoked to produce the assigned values. If `customizer` returns | |
| 14198 * `undefined`, assignment is handled by the method instead. The `customizer` | |
| 14199 * is invoked with five arguments: (objValue, srcValue, key, object, source). | |
| 14200 * | |
| 14201 * **Note:** This method mutates `object`. | |
| 14202 * | |
| 14203 * @static | |
| 14204 * @memberOf _ | |
| 14205 * @since 4.0.0 | |
| 14206 * @category Object | |
| 14207 * @param {Object} object The destination object. | |
| 14208 * @param {...Object} sources The source objects. | |
| 14209 * @param {Function} [customizer] The function to customize assigned values. | |
| 14210 * @returns {Object} Returns `object`. | |
| 14211 * @see _.assignInWith | |
| 14212 * @example | |
| 14213 * | |
| 14214 * function customizer(objValue, srcValue) { | |
| 14215 * return _.isUndefined(objValue) ? srcValue : objValue; | |
| 14216 * } | |
| 14217 * | |
| 14218 * var defaults = _.partialRight(_.assignWith, customizer); | |
| 14219 * | |
| 14220 * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); | |
| 14221 * // => { 'a': 1, 'b': 2 } | |
| 14222 */ | |
| 14223 var assignWith = createAssigner(function(object, source, srcIndex, customizer) { | |
| 14224 copyObject(source, keys(source), object, customizer); | |
| 14225 }); | |
| 14226 | |
| 14227 /** | |
| 14228 * Creates an array of values corresponding to `paths` of `object`. | |
| 14229 * | |
| 14230 * @static | |
| 14231 * @memberOf _ | |
| 14232 * @since 1.0.0 | |
| 14233 * @category Object | |
| 14234 * @param {Object} object The object to iterate over. | |
| 14235 * @param {...(string|string[])} [paths] The property paths to pick. | |
| 14236 * @returns {Array} Returns the picked values. | |
| 14237 * @example | |
| 14238 * | |
| 14239 * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; | |
| 14240 * | |
| 14241 * _.at(object, ['a[0].b.c', 'a[1]']); | |
| 14242 * // => [3, 4] | |
| 14243 */ | |
| 14244 var at = flatRest(baseAt); | |
| 14245 | |
| 14246 /** | |
| 14247 * Creates an object that inherits from the `prototype` object. If a | |
| 14248 * `properties` object is given, its own enumerable string keyed properties | |
| 14249 * are assigned to the created object. | |
| 14250 * | |
| 14251 * @static | |
| 14252 * @memberOf _ | |
| 14253 * @since 2.3.0 | |
| 14254 * @category Object | |
| 14255 * @param {Object} prototype The object to inherit from. | |
| 14256 * @param {Object} [properties] The properties to assign to the object. | |
| 14257 * @returns {Object} Returns the new object. | |
| 14258 * @example | |
| 14259 * | |
| 14260 * function Shape() { | |
| 14261 * this.x = 0; | |
| 14262 * this.y = 0; | |
| 14263 * } | |
| 14264 * | |
| 14265 * function Circle() { | |
| 14266 * Shape.call(this); | |
| 14267 * } | |
| 14268 * | |
| 14269 * Circle.prototype = _.create(Shape.prototype, { | |
| 14270 * 'constructor': Circle | |
| 14271 * }); | |
| 14272 * | |
| 14273 * var circle = new Circle; | |
| 14274 * circle instanceof Circle; | |
| 14275 * // => true | |
| 14276 * | |
| 14277 * circle instanceof Shape; | |
| 14278 * // => true | |
| 14279 */ | |
| 14280 function create(prototype, properties) { | |
| 14281 var result = baseCreate(prototype); | |
| 14282 return properties == null ? result : baseAssign(result, properties); | |
| 14283 } | |
| 14284 | |
| 14285 /** | |
| 14286 * Assigns own and inherited enumerable string keyed properties of source | |
| 14287 * objects to the destination object for all destination properties that | |
| 14288 * resolve to `undefined`. Source objects are applied from left to right. | |
| 14289 * Once a property is set, additional values of the same property are ignored. | |
| 14290 * | |
| 14291 * **Note:** This method mutates `object`. | |
| 14292 * | |
| 14293 * @static | |
| 14294 * @since 0.1.0 | |
| 14295 * @memberOf _ | |
| 14296 * @category Object | |
| 14297 * @param {Object} object The destination object. | |
| 14298 * @param {...Object} [sources] The source objects. | |
| 14299 * @returns {Object} Returns `object`. | |
| 14300 * @see _.defaultsDeep | |
| 14301 * @example | |
| 14302 * | |
| 14303 * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); | |
| 14304 * // => { 'a': 1, 'b': 2 } | |
| 14305 */ | |
| 14306 var defaults = baseRest(function(object, sources) { | |
| 14307 object = Object(object); | |
| 14308 | |
| 14309 var index = -1; | |
| 14310 var length = sources.length; | |
| 14311 var guard = length > 2 ? sources[2] : undefined; | |
| 14312 | |
| 14313 if (guard && isIterateeCall(sources[0], sources[1], guard)) { | |
| 14314 length = 1; | |
| 14315 } | |
| 14316 | |
| 14317 while (++index < length) { | |
| 14318 var source = sources[index]; | |
| 14319 var props = keysIn(source); | |
| 14320 var propsIndex = -1; | |
| 14321 var propsLength = props.length; | |
| 14322 | |
| 14323 while (++propsIndex < propsLength) { | |
| 14324 var key = props[propsIndex]; | |
| 14325 var value = object[key]; | |
| 14326 | |
| 14327 if (value === undefined || | |
| 14328 (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) { | |
| 14329 object[key] = source[key]; | |
| 14330 } | |
| 14331 } | |
| 14332 } | |
| 14333 | |
| 14334 return object; | |
| 14335 }); | |
| 14336 | |
| 14337 /** | |
| 14338 * This method is like `_.defaults` except that it recursively assigns | |
| 14339 * default properties. | |
| 14340 * | |
| 14341 * **Note:** This method mutates `object`. | |
| 14342 * | |
| 14343 * @static | |
| 14344 * @memberOf _ | |
| 14345 * @since 3.10.0 | |
| 14346 * @category Object | |
| 14347 * @param {Object} object The destination object. | |
| 14348 * @param {...Object} [sources] The source objects. | |
| 14349 * @returns {Object} Returns `object`. | |
| 14350 * @see _.defaults | |
| 14351 * @example | |
| 14352 * | |
| 14353 * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } }); | |
| 14354 * // => { 'a': { 'b': 2, 'c': 3 } } | |
| 14355 */ | |
| 14356 var defaultsDeep = baseRest(function(args) { | |
| 14357 args.push(undefined, customDefaultsMerge); | |
| 14358 return apply(mergeWith, undefined, args); | |
| 14359 }); | |
| 14360 | |
| 14361 /** | |
| 14362 * This method is like `_.find` except that it returns the key of the first | |
| 14363 * element `predicate` returns truthy for instead of the element itself. | |
| 14364 * | |
| 14365 * @static | |
| 14366 * @memberOf _ | |
| 14367 * @since 1.1.0 | |
| 14368 * @category Object | |
| 14369 * @param {Object} object The object to inspect. | |
| 14370 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 14371 * @returns {string|undefined} Returns the key of the matched element, | |
| 14372 * else `undefined`. | |
| 14373 * @example | |
| 14374 * | |
| 14375 * var users = { | |
| 14376 * 'barney': { 'age': 36, 'active': true }, | |
| 14377 * 'fred': { 'age': 40, 'active': false }, | |
| 14378 * 'pebbles': { 'age': 1, 'active': true } | |
| 14379 * }; | |
| 14380 * | |
| 14381 * _.findKey(users, function(o) { return o.age < 40; }); | |
| 14382 * // => 'barney' (iteration order is not guaranteed) | |
| 14383 * | |
| 14384 * // The `_.matches` iteratee shorthand. | |
| 14385 * _.findKey(users, { 'age': 1, 'active': true }); | |
| 14386 * // => 'pebbles' | |
| 14387 * | |
| 14388 * // The `_.matchesProperty` iteratee shorthand. | |
| 14389 * _.findKey(users, ['active', false]); | |
| 14390 * // => 'fred' | |
| 14391 * | |
| 14392 * // The `_.property` iteratee shorthand. | |
| 14393 * _.findKey(users, 'active'); | |
| 14394 * // => 'barney' | |
| 14395 */ | |
| 14396 function findKey(object, predicate) { | |
| 14397 return baseFindKey(object, getIteratee(predicate, 3), baseForOwn); | |
| 14398 } | |
| 14399 | |
| 14400 /** | |
| 14401 * This method is like `_.findKey` except that it iterates over elements of | |
| 14402 * a collection in the opposite order. | |
| 14403 * | |
| 14404 * @static | |
| 14405 * @memberOf _ | |
| 14406 * @since 2.0.0 | |
| 14407 * @category Object | |
| 14408 * @param {Object} object The object to inspect. | |
| 14409 * @param {Function} [predicate=_.identity] The function invoked per iteration. | |
| 14410 * @returns {string|undefined} Returns the key of the matched element, | |
| 14411 * else `undefined`. | |
| 14412 * @example | |
| 14413 * | |
| 14414 * var users = { | |
| 14415 * 'barney': { 'age': 36, 'active': true }, | |
| 14416 * 'fred': { 'age': 40, 'active': false }, | |
| 14417 * 'pebbles': { 'age': 1, 'active': true } | |
| 14418 * }; | |
| 14419 * | |
| 14420 * _.findLastKey(users, function(o) { return o.age < 40; }); | |
| 14421 * // => returns 'pebbles' assuming `_.findKey` returns 'barney' | |
| 14422 * | |
| 14423 * // The `_.matches` iteratee shorthand. | |
| 14424 * _.findLastKey(users, { 'age': 36, 'active': true }); | |
| 14425 * // => 'barney' | |
| 14426 * | |
| 14427 * // The `_.matchesProperty` iteratee shorthand. | |
| 14428 * _.findLastKey(users, ['active', false]); | |
| 14429 * // => 'fred' | |
| 14430 * | |
| 14431 * // The `_.property` iteratee shorthand. | |
| 14432 * _.findLastKey(users, 'active'); | |
| 14433 * // => 'pebbles' | |
| 14434 */ | |
| 14435 function findLastKey(object, predicate) { | |
| 14436 return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight); | |
| 14437 } | |
| 14438 | |
| 14439 /** | |
| 14440 * Iterates over own and inherited enumerable string keyed properties of an | |
| 14441 * object and invokes `iteratee` for each property. The iteratee is invoked | |
| 14442 * with three arguments: (value, key, object). Iteratee functions may exit | |
| 14443 * iteration early by explicitly returning `false`. | |
| 14444 * | |
| 14445 * @static | |
| 14446 * @memberOf _ | |
| 14447 * @since 0.3.0 | |
| 14448 * @category Object | |
| 14449 * @param {Object} object The object to iterate over. | |
| 14450 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 14451 * @returns {Object} Returns `object`. | |
| 14452 * @see _.forInRight | |
| 14453 * @example | |
| 14454 * | |
| 14455 * function Foo() { | |
| 14456 * this.a = 1; | |
| 14457 * this.b = 2; | |
| 14458 * } | |
| 14459 * | |
| 14460 * Foo.prototype.c = 3; | |
| 14461 * | |
| 14462 * _.forIn(new Foo, function(value, key) { | |
| 14463 * console.log(key); | |
| 14464 * }); | |
| 14465 * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed). | |
| 14466 */ | |
| 14467 function forIn(object, iteratee) { | |
| 14468 return object == null | |
| 14469 ? object | |
| 14470 : baseFor(object, getIteratee(iteratee, 3), keysIn); | |
| 14471 } | |
| 14472 | |
| 14473 /** | |
| 14474 * This method is like `_.forIn` except that it iterates over properties of | |
| 14475 * `object` in the opposite order. | |
| 14476 * | |
| 14477 * @static | |
| 14478 * @memberOf _ | |
| 14479 * @since 2.0.0 | |
| 14480 * @category Object | |
| 14481 * @param {Object} object The object to iterate over. | |
| 14482 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 14483 * @returns {Object} Returns `object`. | |
| 14484 * @see _.forIn | |
| 14485 * @example | |
| 14486 * | |
| 14487 * function Foo() { | |
| 14488 * this.a = 1; | |
| 14489 * this.b = 2; | |
| 14490 * } | |
| 14491 * | |
| 14492 * Foo.prototype.c = 3; | |
| 14493 * | |
| 14494 * _.forInRight(new Foo, function(value, key) { | |
| 14495 * console.log(key); | |
| 14496 * }); | |
| 14497 * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'. | |
| 14498 */ | |
| 14499 function forInRight(object, iteratee) { | |
| 14500 return object == null | |
| 14501 ? object | |
| 14502 : baseForRight(object, getIteratee(iteratee, 3), keysIn); | |
| 14503 } | |
| 14504 | |
| 14505 /** | |
| 14506 * Iterates over own enumerable string keyed properties of an object and | |
| 14507 * invokes `iteratee` for each property. The iteratee is invoked with three | |
| 14508 * arguments: (value, key, object). Iteratee functions may exit iteration | |
| 14509 * early by explicitly returning `false`. | |
| 14510 * | |
| 14511 * @static | |
| 14512 * @memberOf _ | |
| 14513 * @since 0.3.0 | |
| 14514 * @category Object | |
| 14515 * @param {Object} object The object to iterate over. | |
| 14516 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 14517 * @returns {Object} Returns `object`. | |
| 14518 * @see _.forOwnRight | |
| 14519 * @example | |
| 14520 * | |
| 14521 * function Foo() { | |
| 14522 * this.a = 1; | |
| 14523 * this.b = 2; | |
| 14524 * } | |
| 14525 * | |
| 14526 * Foo.prototype.c = 3; | |
| 14527 * | |
| 14528 * _.forOwn(new Foo, function(value, key) { | |
| 14529 * console.log(key); | |
| 14530 * }); | |
| 14531 * // => Logs 'a' then 'b' (iteration order is not guaranteed). | |
| 14532 */ | |
| 14533 function forOwn(object, iteratee) { | |
| 14534 return object && baseForOwn(object, getIteratee(iteratee, 3)); | |
| 14535 } | |
| 14536 | |
| 14537 /** | |
| 14538 * This method is like `_.forOwn` except that it iterates over properties of | |
| 14539 * `object` in the opposite order. | |
| 14540 * | |
| 14541 * @static | |
| 14542 * @memberOf _ | |
| 14543 * @since 2.0.0 | |
| 14544 * @category Object | |
| 14545 * @param {Object} object The object to iterate over. | |
| 14546 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 14547 * @returns {Object} Returns `object`. | |
| 14548 * @see _.forOwn | |
| 14549 * @example | |
| 14550 * | |
| 14551 * function Foo() { | |
| 14552 * this.a = 1; | |
| 14553 * this.b = 2; | |
| 14554 * } | |
| 14555 * | |
| 14556 * Foo.prototype.c = 3; | |
| 14557 * | |
| 14558 * _.forOwnRight(new Foo, function(value, key) { | |
| 14559 * console.log(key); | |
| 14560 * }); | |
| 14561 * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'. | |
| 14562 */ | |
| 14563 function forOwnRight(object, iteratee) { | |
| 14564 return object && baseForOwnRight(object, getIteratee(iteratee, 3)); | |
| 14565 } | |
| 14566 | |
| 14567 /** | |
| 14568 * Creates an array of function property names from own enumerable properties | |
| 14569 * of `object`. | |
| 14570 * | |
| 14571 * @static | |
| 14572 * @since 0.1.0 | |
| 14573 * @memberOf _ | |
| 14574 * @category Object | |
| 14575 * @param {Object} object The object to inspect. | |
| 14576 * @returns {Array} Returns the function names. | |
| 14577 * @see _.functionsIn | |
| 14578 * @example | |
| 14579 * | |
| 14580 * function Foo() { | |
| 14581 * this.a = _.constant('a'); | |
| 14582 * this.b = _.constant('b'); | |
| 14583 * } | |
| 14584 * | |
| 14585 * Foo.prototype.c = _.constant('c'); | |
| 14586 * | |
| 14587 * _.functions(new Foo); | |
| 14588 * // => ['a', 'b'] | |
| 14589 */ | |
| 14590 function functions(object) { | |
| 14591 return object == null ? [] : baseFunctions(object, keys(object)); | |
| 14592 } | |
| 14593 | |
| 14594 /** | |
| 14595 * Creates an array of function property names from own and inherited | |
| 14596 * enumerable properties of `object`. | |
| 14597 * | |
| 14598 * @static | |
| 14599 * @memberOf _ | |
| 14600 * @since 4.0.0 | |
| 14601 * @category Object | |
| 14602 * @param {Object} object The object to inspect. | |
| 14603 * @returns {Array} Returns the function names. | |
| 14604 * @see _.functions | |
| 14605 * @example | |
| 14606 * | |
| 14607 * function Foo() { | |
| 14608 * this.a = _.constant('a'); | |
| 14609 * this.b = _.constant('b'); | |
| 14610 * } | |
| 14611 * | |
| 14612 * Foo.prototype.c = _.constant('c'); | |
| 14613 * | |
| 14614 * _.functionsIn(new Foo); | |
| 14615 * // => ['a', 'b', 'c'] | |
| 14616 */ | |
| 14617 function functionsIn(object) { | |
| 14618 return object == null ? [] : baseFunctions(object, keysIn(object)); | |
| 14619 } | |
| 14620 | |
| 14621 /** | |
| 14622 * Gets the value at `path` of `object`. If the resolved value is | |
| 14623 * `undefined`, the `defaultValue` is returned in its place. | |
| 14624 * | |
| 14625 * @static | |
| 14626 * @memberOf _ | |
| 14627 * @since 3.7.0 | |
| 14628 * @category Object | |
| 14629 * @param {Object} object The object to query. | |
| 14630 * @param {Array|string} path The path of the property to get. | |
| 14631 * @param {*} [defaultValue] The value returned for `undefined` resolved values. | |
| 14632 * @returns {*} Returns the resolved value. | |
| 14633 * @example | |
| 14634 * | |
| 14635 * var object = { 'a': [{ 'b': { 'c': 3 } }] }; | |
| 14636 * | |
| 14637 * _.get(object, 'a[0].b.c'); | |
| 14638 * // => 3 | |
| 14639 * | |
| 14640 * _.get(object, ['a', '0', 'b', 'c']); | |
| 14641 * // => 3 | |
| 14642 * | |
| 14643 * _.get(object, 'a.b.c', 'default'); | |
| 14644 * // => 'default' | |
| 14645 */ | |
| 14646 function get(object, path, defaultValue) { | |
| 14647 var result = object == null ? undefined : baseGet(object, path); | |
| 14648 return result === undefined ? defaultValue : result; | |
| 14649 } | |
| 14650 | |
| 14651 /** | |
| 14652 * Checks if `path` is a direct property of `object`. | |
| 14653 * | |
| 14654 * @static | |
| 14655 * @since 0.1.0 | |
| 14656 * @memberOf _ | |
| 14657 * @category Object | |
| 14658 * @param {Object} object The object to query. | |
| 14659 * @param {Array|string} path The path to check. | |
| 14660 * @returns {boolean} Returns `true` if `path` exists, else `false`. | |
| 14661 * @example | |
| 14662 * | |
| 14663 * var object = { 'a': { 'b': 2 } }; | |
| 14664 * var other = _.create({ 'a': _.create({ 'b': 2 }) }); | |
| 14665 * | |
| 14666 * _.has(object, 'a'); | |
| 14667 * // => true | |
| 14668 * | |
| 14669 * _.has(object, 'a.b'); | |
| 14670 * // => true | |
| 14671 * | |
| 14672 * _.has(object, ['a', 'b']); | |
| 14673 * // => true | |
| 14674 * | |
| 14675 * _.has(other, 'a'); | |
| 14676 * // => false | |
| 14677 */ | |
| 14678 function has(object, path) { | |
| 14679 return object != null && hasPath(object, path, baseHas); | |
| 14680 } | |
| 14681 | |
| 14682 /** | |
| 14683 * Checks if `path` is a direct or inherited property of `object`. | |
| 14684 * | |
| 14685 * @static | |
| 14686 * @memberOf _ | |
| 14687 * @since 4.0.0 | |
| 14688 * @category Object | |
| 14689 * @param {Object} object The object to query. | |
| 14690 * @param {Array|string} path The path to check. | |
| 14691 * @returns {boolean} Returns `true` if `path` exists, else `false`. | |
| 14692 * @example | |
| 14693 * | |
| 14694 * var object = _.create({ 'a': _.create({ 'b': 2 }) }); | |
| 14695 * | |
| 14696 * _.hasIn(object, 'a'); | |
| 14697 * // => true | |
| 14698 * | |
| 14699 * _.hasIn(object, 'a.b'); | |
| 14700 * // => true | |
| 14701 * | |
| 14702 * _.hasIn(object, ['a', 'b']); | |
| 14703 * // => true | |
| 14704 * | |
| 14705 * _.hasIn(object, 'b'); | |
| 14706 * // => false | |
| 14707 */ | |
| 14708 function hasIn(object, path) { | |
| 14709 return object != null && hasPath(object, path, baseHasIn); | |
| 14710 } | |
| 14711 | |
| 14712 /** | |
| 14713 * Creates an object composed of the inverted keys and values of `object`. | |
| 14714 * If `object` contains duplicate values, subsequent values overwrite | |
| 14715 * property assignments of previous values. | |
| 14716 * | |
| 14717 * @static | |
| 14718 * @memberOf _ | |
| 14719 * @since 0.7.0 | |
| 14720 * @category Object | |
| 14721 * @param {Object} object The object to invert. | |
| 14722 * @returns {Object} Returns the new inverted object. | |
| 14723 * @example | |
| 14724 * | |
| 14725 * var object = { 'a': 1, 'b': 2, 'c': 1 }; | |
| 14726 * | |
| 14727 * _.invert(object); | |
| 14728 * // => { '1': 'c', '2': 'b' } | |
| 14729 */ | |
| 14730 var invert = createInverter(function(result, value, key) { | |
| 14731 if (value != null && | |
| 14732 typeof value.toString != 'function') { | |
| 14733 value = nativeObjectToString.call(value); | |
| 14734 } | |
| 14735 | |
| 14736 result[value] = key; | |
| 14737 }, constant(identity)); | |
| 14738 | |
| 14739 /** | |
| 14740 * This method is like `_.invert` except that the inverted object is generated | |
| 14741 * from the results of running each element of `object` thru `iteratee`. The | |
| 14742 * corresponding inverted value of each inverted key is an array of keys | |
| 14743 * responsible for generating the inverted value. The iteratee is invoked | |
| 14744 * with one argument: (value). | |
| 14745 * | |
| 14746 * @static | |
| 14747 * @memberOf _ | |
| 14748 * @since 4.1.0 | |
| 14749 * @category Object | |
| 14750 * @param {Object} object The object to invert. | |
| 14751 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 14752 * @returns {Object} Returns the new inverted object. | |
| 14753 * @example | |
| 14754 * | |
| 14755 * var object = { 'a': 1, 'b': 2, 'c': 1 }; | |
| 14756 * | |
| 14757 * _.invertBy(object); | |
| 14758 * // => { '1': ['a', 'c'], '2': ['b'] } | |
| 14759 * | |
| 14760 * _.invertBy(object, function(value) { | |
| 14761 * return 'group' + value; | |
| 14762 * }); | |
| 14763 * // => { 'group1': ['a', 'c'], 'group2': ['b'] } | |
| 14764 */ | |
| 14765 var invertBy = createInverter(function(result, value, key) { | |
| 14766 if (value != null && | |
| 14767 typeof value.toString != 'function') { | |
| 14768 value = nativeObjectToString.call(value); | |
| 14769 } | |
| 14770 | |
| 14771 if (hasOwnProperty.call(result, value)) { | |
| 14772 result[value].push(key); | |
| 14773 } else { | |
| 14774 result[value] = [key]; | |
| 14775 } | |
| 14776 }, getIteratee); | |
| 14777 | |
| 14778 /** | |
| 14779 * Invokes the method at `path` of `object`. | |
| 14780 * | |
| 14781 * @static | |
| 14782 * @memberOf _ | |
| 14783 * @since 4.0.0 | |
| 14784 * @category Object | |
| 14785 * @param {Object} object The object to query. | |
| 14786 * @param {Array|string} path The path of the method to invoke. | |
| 14787 * @param {...*} [args] The arguments to invoke the method with. | |
| 14788 * @returns {*} Returns the result of the invoked method. | |
| 14789 * @example | |
| 14790 * | |
| 14791 * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] }; | |
| 14792 * | |
| 14793 * _.invoke(object, 'a[0].b.c.slice', 1, 3); | |
| 14794 * // => [2, 3] | |
| 14795 */ | |
| 14796 var invoke = baseRest(baseInvoke); | |
| 14797 | |
| 14798 /** | |
| 14799 * Creates an array of the own enumerable property names of `object`. | |
| 14800 * | |
| 14801 * **Note:** Non-object values are coerced to objects. See the | |
| 14802 * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) | |
| 14803 * for more details. | |
| 14804 * | |
| 14805 * @static | |
| 14806 * @since 0.1.0 | |
| 14807 * @memberOf _ | |
| 14808 * @category Object | |
| 14809 * @param {Object} object The object to query. | |
| 14810 * @returns {Array} Returns the array of property names. | |
| 14811 * @example | |
| 14812 * | |
| 14813 * function Foo() { | |
| 14814 * this.a = 1; | |
| 14815 * this.b = 2; | |
| 14816 * } | |
| 14817 * | |
| 14818 * Foo.prototype.c = 3; | |
| 14819 * | |
| 14820 * _.keys(new Foo); | |
| 14821 * // => ['a', 'b'] (iteration order is not guaranteed) | |
| 14822 * | |
| 14823 * _.keys('hi'); | |
| 14824 * // => ['0', '1'] | |
| 14825 */ | |
| 14826 function keys(object) { | |
| 14827 return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object); | |
| 14828 } | |
| 14829 | |
| 14830 /** | |
| 14831 * Creates an array of the own and inherited enumerable property names of `object`. | |
| 14832 * | |
| 14833 * **Note:** Non-object values are coerced to objects. | |
| 14834 * | |
| 14835 * @static | |
| 14836 * @memberOf _ | |
| 14837 * @since 3.0.0 | |
| 14838 * @category Object | |
| 14839 * @param {Object} object The object to query. | |
| 14840 * @returns {Array} Returns the array of property names. | |
| 14841 * @example | |
| 14842 * | |
| 14843 * function Foo() { | |
| 14844 * this.a = 1; | |
| 14845 * this.b = 2; | |
| 14846 * } | |
| 14847 * | |
| 14848 * Foo.prototype.c = 3; | |
| 14849 * | |
| 14850 * _.keysIn(new Foo); | |
| 14851 * // => ['a', 'b', 'c'] (iteration order is not guaranteed) | |
| 14852 */ | |
| 14853 function keysIn(object) { | |
| 14854 return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object); | |
| 14855 } | |
| 14856 | |
| 14857 /** | |
| 14858 * The opposite of `_.mapValues`; this method creates an object with the | |
| 14859 * same values as `object` and keys generated by running each own enumerable | |
| 14860 * string keyed property of `object` thru `iteratee`. The iteratee is invoked | |
| 14861 * with three arguments: (value, key, object). | |
| 14862 * | |
| 14863 * @static | |
| 14864 * @memberOf _ | |
| 14865 * @since 3.8.0 | |
| 14866 * @category Object | |
| 14867 * @param {Object} object The object to iterate over. | |
| 14868 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 14869 * @returns {Object} Returns the new mapped object. | |
| 14870 * @see _.mapValues | |
| 14871 * @example | |
| 14872 * | |
| 14873 * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) { | |
| 14874 * return key + value; | |
| 14875 * }); | |
| 14876 * // => { 'a1': 1, 'b2': 2 } | |
| 14877 */ | |
| 14878 function mapKeys(object, iteratee) { | |
| 14879 var result = {}; | |
| 14880 iteratee = getIteratee(iteratee, 3); | |
| 14881 | |
| 14882 baseForOwn(object, function(value, key, object) { | |
| 14883 baseAssignValue(result, iteratee(value, key, object), value); | |
| 14884 }); | |
| 14885 return result; | |
| 14886 } | |
| 14887 | |
| 14888 /** | |
| 14889 * Creates an object with the same keys as `object` and values generated | |
| 14890 * by running each own enumerable string keyed property of `object` thru | |
| 14891 * `iteratee`. The iteratee is invoked with three arguments: | |
| 14892 * (value, key, object). | |
| 14893 * | |
| 14894 * @static | |
| 14895 * @memberOf _ | |
| 14896 * @since 2.4.0 | |
| 14897 * @category Object | |
| 14898 * @param {Object} object The object to iterate over. | |
| 14899 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 14900 * @returns {Object} Returns the new mapped object. | |
| 14901 * @see _.mapKeys | |
| 14902 * @example | |
| 14903 * | |
| 14904 * var users = { | |
| 14905 * 'fred': { 'user': 'fred', 'age': 40 }, | |
| 14906 * 'pebbles': { 'user': 'pebbles', 'age': 1 } | |
| 14907 * }; | |
| 14908 * | |
| 14909 * _.mapValues(users, function(o) { return o.age; }); | |
| 14910 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) | |
| 14911 * | |
| 14912 * // The `_.property` iteratee shorthand. | |
| 14913 * _.mapValues(users, 'age'); | |
| 14914 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) | |
| 14915 */ | |
| 14916 function mapValues(object, iteratee) { | |
| 14917 var result = {}; | |
| 14918 iteratee = getIteratee(iteratee, 3); | |
| 14919 | |
| 14920 baseForOwn(object, function(value, key, object) { | |
| 14921 baseAssignValue(result, key, iteratee(value, key, object)); | |
| 14922 }); | |
| 14923 return result; | |
| 14924 } | |
| 14925 | |
| 14926 /** | |
| 14927 * This method is like `_.assign` except that it recursively merges own and | |
| 14928 * inherited enumerable string keyed properties of source objects into the | |
| 14929 * destination object. Source properties that resolve to `undefined` are | |
| 14930 * skipped if a destination value exists. Array and plain object properties | |
| 14931 * are merged recursively. Other objects and value types are overridden by | |
| 14932 * assignment. Source objects are applied from left to right. Subsequent | |
| 14933 * sources overwrite property assignments of previous sources. | |
| 14934 * | |
| 14935 * **Note:** This method mutates `object`. | |
| 14936 * | |
| 14937 * @static | |
| 14938 * @memberOf _ | |
| 14939 * @since 0.5.0 | |
| 14940 * @category Object | |
| 14941 * @param {Object} object The destination object. | |
| 14942 * @param {...Object} [sources] The source objects. | |
| 14943 * @returns {Object} Returns `object`. | |
| 14944 * @example | |
| 14945 * | |
| 14946 * var object = { | |
| 14947 * 'a': [{ 'b': 2 }, { 'd': 4 }] | |
| 14948 * }; | |
| 14949 * | |
| 14950 * var other = { | |
| 14951 * 'a': [{ 'c': 3 }, { 'e': 5 }] | |
| 14952 * }; | |
| 14953 * | |
| 14954 * _.merge(object, other); | |
| 14955 * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] } | |
| 14956 */ | |
| 14957 var merge = createAssigner(function(object, source, srcIndex) { | |
| 14958 baseMerge(object, source, srcIndex); | |
| 14959 }); | |
| 14960 | |
| 14961 /** | |
| 14962 * This method is like `_.merge` except that it accepts `customizer` which | |
| 14963 * is invoked to produce the merged values of the destination and source | |
| 14964 * properties. If `customizer` returns `undefined`, merging is handled by the | |
| 14965 * method instead. The `customizer` is invoked with six arguments: | |
| 14966 * (objValue, srcValue, key, object, source, stack). | |
| 14967 * | |
| 14968 * **Note:** This method mutates `object`. | |
| 14969 * | |
| 14970 * @static | |
| 14971 * @memberOf _ | |
| 14972 * @since 4.0.0 | |
| 14973 * @category Object | |
| 14974 * @param {Object} object The destination object. | |
| 14975 * @param {...Object} sources The source objects. | |
| 14976 * @param {Function} customizer The function to customize assigned values. | |
| 14977 * @returns {Object} Returns `object`. | |
| 14978 * @example | |
| 14979 * | |
| 14980 * function customizer(objValue, srcValue) { | |
| 14981 * if (_.isArray(objValue)) { | |
| 14982 * return objValue.concat(srcValue); | |
| 14983 * } | |
| 14984 * } | |
| 14985 * | |
| 14986 * var object = { 'a': [1], 'b': [2] }; | |
| 14987 * var other = { 'a': [3], 'b': [4] }; | |
| 14988 * | |
| 14989 * _.mergeWith(object, other, customizer); | |
| 14990 * // => { 'a': [1, 3], 'b': [2, 4] } | |
| 14991 */ | |
| 14992 var mergeWith = createAssigner(function(object, source, srcIndex, customizer) { | |
| 14993 baseMerge(object, source, srcIndex, customizer); | |
| 14994 }); | |
| 14995 | |
| 14996 /** | |
| 14997 * The opposite of `_.pick`; this method creates an object composed of the | |
| 14998 * own and inherited enumerable property paths of `object` that are not omitted. | |
| 14999 * | |
| 15000 * **Note:** This method is considerably slower than `_.pick`. | |
| 15001 * | |
| 15002 * @static | |
| 15003 * @since 0.1.0 | |
| 15004 * @memberOf _ | |
| 15005 * @category Object | |
| 15006 * @param {Object} object The source object. | |
| 15007 * @param {...(string|string[])} [paths] The property paths to omit. | |
| 15008 * @returns {Object} Returns the new object. | |
| 15009 * @example | |
| 15010 * | |
| 15011 * var object = { 'a': 1, 'b': '2', 'c': 3 }; | |
| 15012 * | |
| 15013 * _.omit(object, ['a', 'c']); | |
| 15014 * // => { 'b': '2' } | |
| 15015 */ | |
| 15016 var omit = flatRest(function(object, paths) { | |
| 15017 var result = {}; | |
| 15018 if (object == null) { | |
| 15019 return result; | |
| 15020 } | |
| 15021 var isDeep = false; | |
| 15022 paths = arrayMap(paths, function(path) { | |
| 15023 path = castPath(path, object); | |
| 15024 isDeep || (isDeep = path.length > 1); | |
| 15025 return path; | |
| 15026 }); | |
| 15027 copyObject(object, getAllKeysIn(object), result); | |
| 15028 if (isDeep) { | |
| 15029 result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone); | |
| 15030 } | |
| 15031 var length = paths.length; | |
| 15032 while (length--) { | |
| 15033 baseUnset(result, paths[length]); | |
| 15034 } | |
| 15035 return result; | |
| 15036 }); | |
| 15037 | |
| 15038 /** | |
| 15039 * The opposite of `_.pickBy`; this method creates an object composed of | |
| 15040 * the own and inherited enumerable string keyed properties of `object` that | |
| 15041 * `predicate` doesn't return truthy for. The predicate is invoked with two | |
| 15042 * arguments: (value, key). | |
| 15043 * | |
| 15044 * @static | |
| 15045 * @memberOf _ | |
| 15046 * @since 4.0.0 | |
| 15047 * @category Object | |
| 15048 * @param {Object} object The source object. | |
| 15049 * @param {Function} [predicate=_.identity] The function invoked per property. | |
| 15050 * @returns {Object} Returns the new object. | |
| 15051 * @example | |
| 15052 * | |
| 15053 * var object = { 'a': 1, 'b': '2', 'c': 3 }; | |
| 15054 * | |
| 15055 * _.omitBy(object, _.isNumber); | |
| 15056 * // => { 'b': '2' } | |
| 15057 */ | |
| 15058 function omitBy(object, predicate) { | |
| 15059 return pickBy(object, negate(getIteratee(predicate))); | |
| 15060 } | |
| 15061 | |
| 15062 /** | |
| 15063 * Creates an object composed of the picked `object` properties. | |
| 15064 * | |
| 15065 * @static | |
| 15066 * @since 0.1.0 | |
| 15067 * @memberOf _ | |
| 15068 * @category Object | |
| 15069 * @param {Object} object The source object. | |
| 15070 * @param {...(string|string[])} [paths] The property paths to pick. | |
| 15071 * @returns {Object} Returns the new object. | |
| 15072 * @example | |
| 15073 * | |
| 15074 * var object = { 'a': 1, 'b': '2', 'c': 3 }; | |
| 15075 * | |
| 15076 * _.pick(object, ['a', 'c']); | |
| 15077 * // => { 'a': 1, 'c': 3 } | |
| 15078 */ | |
| 15079 var pick = flatRest(function(object, paths) { | |
| 15080 return object == null ? {} : basePick(object, paths); | |
| 15081 }); | |
| 15082 | |
| 15083 /** | |
| 15084 * Creates an object composed of the `object` properties `predicate` returns | |
| 15085 * truthy for. The predicate is invoked with two arguments: (value, key). | |
| 15086 * | |
| 15087 * @static | |
| 15088 * @memberOf _ | |
| 15089 * @since 4.0.0 | |
| 15090 * @category Object | |
| 15091 * @param {Object} object The source object. | |
| 15092 * @param {Function} [predicate=_.identity] The function invoked per property. | |
| 15093 * @returns {Object} Returns the new object. | |
| 15094 * @example | |
| 15095 * | |
| 15096 * var object = { 'a': 1, 'b': '2', 'c': 3 }; | |
| 15097 * | |
| 15098 * _.pickBy(object, _.isNumber); | |
| 15099 * // => { 'a': 1, 'c': 3 } | |
| 15100 */ | |
| 15101 function pickBy(object, predicate) { | |
| 15102 if (object == null) { | |
| 15103 return {}; | |
| 15104 } | |
| 15105 var props = arrayMap(getAllKeysIn(object), function(prop) { | |
| 15106 return [prop]; | |
| 15107 }); | |
| 15108 predicate = getIteratee(predicate); | |
| 15109 return basePickBy(object, props, function(value, path) { | |
| 15110 return predicate(value, path[0]); | |
| 15111 }); | |
| 15112 } | |
| 15113 | |
| 15114 /** | |
| 15115 * This method is like `_.get` except that if the resolved value is a | |
| 15116 * function it's invoked with the `this` binding of its parent object and | |
| 15117 * its result is returned. | |
| 15118 * | |
| 15119 * @static | |
| 15120 * @since 0.1.0 | |
| 15121 * @memberOf _ | |
| 15122 * @category Object | |
| 15123 * @param {Object} object The object to query. | |
| 15124 * @param {Array|string} path The path of the property to resolve. | |
| 15125 * @param {*} [defaultValue] The value returned for `undefined` resolved values. | |
| 15126 * @returns {*} Returns the resolved value. | |
| 15127 * @example | |
| 15128 * | |
| 15129 * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] }; | |
| 15130 * | |
| 15131 * _.result(object, 'a[0].b.c1'); | |
| 15132 * // => 3 | |
| 15133 * | |
| 15134 * _.result(object, 'a[0].b.c2'); | |
| 15135 * // => 4 | |
| 15136 * | |
| 15137 * _.result(object, 'a[0].b.c3', 'default'); | |
| 15138 * // => 'default' | |
| 15139 * | |
| 15140 * _.result(object, 'a[0].b.c3', _.constant('default')); | |
| 15141 * // => 'default' | |
| 15142 */ | |
| 15143 function result(object, path, defaultValue) { | |
| 15144 path = castPath(path, object); | |
| 15145 | |
| 15146 var index = -1, | |
| 15147 length = path.length; | |
| 15148 | |
| 15149 // Ensure the loop is entered when path is empty. | |
| 15150 if (!length) { | |
| 15151 length = 1; | |
| 15152 object = undefined; | |
| 15153 } | |
| 15154 while (++index < length) { | |
| 15155 var value = object == null ? undefined : object[toKey(path[index])]; | |
| 15156 if (value === undefined) { | |
| 15157 index = length; | |
| 15158 value = defaultValue; | |
| 15159 } | |
| 15160 object = isFunction(value) ? value.call(object) : value; | |
| 15161 } | |
| 15162 return object; | |
| 15163 } | |
| 15164 | |
| 15165 /** | |
| 15166 * Sets the value at `path` of `object`. If a portion of `path` doesn't exist, | |
| 15167 * it's created. Arrays are created for missing index properties while objects | |
| 15168 * are created for all other missing properties. Use `_.setWith` to customize | |
| 15169 * `path` creation. | |
| 15170 * | |
| 15171 * **Note:** This method mutates `object`. | |
| 15172 * | |
| 15173 * @static | |
| 15174 * @memberOf _ | |
| 15175 * @since 3.7.0 | |
| 15176 * @category Object | |
| 15177 * @param {Object} object The object to modify. | |
| 15178 * @param {Array|string} path The path of the property to set. | |
| 15179 * @param {*} value The value to set. | |
| 15180 * @returns {Object} Returns `object`. | |
| 15181 * @example | |
| 15182 * | |
| 15183 * var object = { 'a': [{ 'b': { 'c': 3 } }] }; | |
| 15184 * | |
| 15185 * _.set(object, 'a[0].b.c', 4); | |
| 15186 * console.log(object.a[0].b.c); | |
| 15187 * // => 4 | |
| 15188 * | |
| 15189 * _.set(object, ['x', '0', 'y', 'z'], 5); | |
| 15190 * console.log(object.x[0].y.z); | |
| 15191 * // => 5 | |
| 15192 */ | |
| 15193 function set(object, path, value) { | |
| 15194 return object == null ? object : baseSet(object, path, value); | |
| 15195 } | |
| 15196 | |
| 15197 /** | |
| 15198 * This method is like `_.set` except that it accepts `customizer` which is | |
| 15199 * invoked to produce the objects of `path`. If `customizer` returns `undefined` | |
| 15200 * path creation is handled by the method instead. The `customizer` is invoked | |
| 15201 * with three arguments: (nsValue, key, nsObject). | |
| 15202 * | |
| 15203 * **Note:** This method mutates `object`. | |
| 15204 * | |
| 15205 * @static | |
| 15206 * @memberOf _ | |
| 15207 * @since 4.0.0 | |
| 15208 * @category Object | |
| 15209 * @param {Object} object The object to modify. | |
| 15210 * @param {Array|string} path The path of the property to set. | |
| 15211 * @param {*} value The value to set. | |
| 15212 * @param {Function} [customizer] The function to customize assigned values. | |
| 15213 * @returns {Object} Returns `object`. | |
| 15214 * @example | |
| 15215 * | |
| 15216 * var object = {}; | |
| 15217 * | |
| 15218 * _.setWith(object, '[0][1]', 'a', Object); | |
| 15219 * // => { '0': { '1': 'a' } } | |
| 15220 */ | |
| 15221 function setWith(object, path, value, customizer) { | |
| 15222 customizer = typeof customizer == 'function' ? customizer : undefined; | |
| 15223 return object == null ? object : baseSet(object, path, value, customizer); | |
| 15224 } | |
| 15225 | |
| 15226 /** | |
| 15227 * Creates an array of own enumerable string keyed-value pairs for `object` | |
| 15228 * which can be consumed by `_.fromPairs`. If `object` is a map or set, its | |
| 15229 * entries are returned. | |
| 15230 * | |
| 15231 * @static | |
| 15232 * @memberOf _ | |
| 15233 * @since 4.0.0 | |
| 15234 * @alias entries | |
| 15235 * @category Object | |
| 15236 * @param {Object} object The object to query. | |
| 15237 * @returns {Array} Returns the key-value pairs. | |
| 15238 * @example | |
| 15239 * | |
| 15240 * function Foo() { | |
| 15241 * this.a = 1; | |
| 15242 * this.b = 2; | |
| 15243 * } | |
| 15244 * | |
| 15245 * Foo.prototype.c = 3; | |
| 15246 * | |
| 15247 * _.toPairs(new Foo); | |
| 15248 * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed) | |
| 15249 */ | |
| 15250 var toPairs = createToPairs(keys); | |
| 15251 | |
| 15252 /** | |
| 15253 * Creates an array of own and inherited enumerable string keyed-value pairs | |
| 15254 * for `object` which can be consumed by `_.fromPairs`. If `object` is a map | |
| 15255 * or set, its entries are returned. | |
| 15256 * | |
| 15257 * @static | |
| 15258 * @memberOf _ | |
| 15259 * @since 4.0.0 | |
| 15260 * @alias entriesIn | |
| 15261 * @category Object | |
| 15262 * @param {Object} object The object to query. | |
| 15263 * @returns {Array} Returns the key-value pairs. | |
| 15264 * @example | |
| 15265 * | |
| 15266 * function Foo() { | |
| 15267 * this.a = 1; | |
| 15268 * this.b = 2; | |
| 15269 * } | |
| 15270 * | |
| 15271 * Foo.prototype.c = 3; | |
| 15272 * | |
| 15273 * _.toPairsIn(new Foo); | |
| 15274 * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed) | |
| 15275 */ | |
| 15276 var toPairsIn = createToPairs(keysIn); | |
| 15277 | |
| 15278 /** | |
| 15279 * An alternative to `_.reduce`; this method transforms `object` to a new | |
| 15280 * `accumulator` object which is the result of running each of its own | |
| 15281 * enumerable string keyed properties thru `iteratee`, with each invocation | |
| 15282 * potentially mutating the `accumulator` object. If `accumulator` is not | |
| 15283 * provided, a new object with the same `[[Prototype]]` will be used. The | |
| 15284 * iteratee is invoked with four arguments: (accumulator, value, key, object). | |
| 15285 * Iteratee functions may exit iteration early by explicitly returning `false`. | |
| 15286 * | |
| 15287 * @static | |
| 15288 * @memberOf _ | |
| 15289 * @since 1.3.0 | |
| 15290 * @category Object | |
| 15291 * @param {Object} object The object to iterate over. | |
| 15292 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 15293 * @param {*} [accumulator] The custom accumulator value. | |
| 15294 * @returns {*} Returns the accumulated value. | |
| 15295 * @example | |
| 15296 * | |
| 15297 * _.transform([2, 3, 4], function(result, n) { | |
| 15298 * result.push(n *= n); | |
| 15299 * return n % 2 == 0; | |
| 15300 * }, []); | |
| 15301 * // => [4, 9] | |
| 15302 * | |
| 15303 * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { | |
| 15304 * (result[value] || (result[value] = [])).push(key); | |
| 15305 * }, {}); | |
| 15306 * // => { '1': ['a', 'c'], '2': ['b'] } | |
| 15307 */ | |
| 15308 function transform(object, iteratee, accumulator) { | |
| 15309 var isArr = isArray(object), | |
| 15310 isArrLike = isArr || isBuffer(object) || isTypedArray(object); | |
| 15311 | |
| 15312 iteratee = getIteratee(iteratee, 4); | |
| 15313 if (accumulator == null) { | |
| 15314 var Ctor = object && object.constructor; | |
| 15315 if (isArrLike) { | |
| 15316 accumulator = isArr ? new Ctor : []; | |
| 15317 } | |
| 15318 else if (isObject(object)) { | |
| 15319 accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {}; | |
| 15320 } | |
| 15321 else { | |
| 15322 accumulator = {}; | |
| 15323 } | |
| 15324 } | |
| 15325 (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) { | |
| 15326 return iteratee(accumulator, value, index, object); | |
| 15327 }); | |
| 15328 return accumulator; | |
| 15329 } | |
| 15330 | |
| 15331 /** | |
| 15332 * Removes the property at `path` of `object`. | |
| 15333 * | |
| 15334 * **Note:** This method mutates `object`. | |
| 15335 * | |
| 15336 * @static | |
| 15337 * @memberOf _ | |
| 15338 * @since 4.0.0 | |
| 15339 * @category Object | |
| 15340 * @param {Object} object The object to modify. | |
| 15341 * @param {Array|string} path The path of the property to unset. | |
| 15342 * @returns {boolean} Returns `true` if the property is deleted, else `false`. | |
| 15343 * @example | |
| 15344 * | |
| 15345 * var object = { 'a': [{ 'b': { 'c': 7 } }] }; | |
| 15346 * _.unset(object, 'a[0].b.c'); | |
| 15347 * // => true | |
| 15348 * | |
| 15349 * console.log(object); | |
| 15350 * // => { 'a': [{ 'b': {} }] }; | |
| 15351 * | |
| 15352 * _.unset(object, ['a', '0', 'b', 'c']); | |
| 15353 * // => true | |
| 15354 * | |
| 15355 * console.log(object); | |
| 15356 * // => { 'a': [{ 'b': {} }] }; | |
| 15357 */ | |
| 15358 function unset(object, path) { | |
| 15359 return object == null ? true : baseUnset(object, path); | |
| 15360 } | |
| 15361 | |
| 15362 /** | |
| 15363 * This method is like `_.set` except that accepts `updater` to produce the | |
| 15364 * value to set. Use `_.updateWith` to customize `path` creation. The `updater` | |
| 15365 * is invoked with one argument: (value). | |
| 15366 * | |
| 15367 * **Note:** This method mutates `object`. | |
| 15368 * | |
| 15369 * @static | |
| 15370 * @memberOf _ | |
| 15371 * @since 4.6.0 | |
| 15372 * @category Object | |
| 15373 * @param {Object} object The object to modify. | |
| 15374 * @param {Array|string} path The path of the property to set. | |
| 15375 * @param {Function} updater The function to produce the updated value. | |
| 15376 * @returns {Object} Returns `object`. | |
| 15377 * @example | |
| 15378 * | |
| 15379 * var object = { 'a': [{ 'b': { 'c': 3 } }] }; | |
| 15380 * | |
| 15381 * _.update(object, 'a[0].b.c', function(n) { return n * n; }); | |
| 15382 * console.log(object.a[0].b.c); | |
| 15383 * // => 9 | |
| 15384 * | |
| 15385 * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; }); | |
| 15386 * console.log(object.x[0].y.z); | |
| 15387 * // => 0 | |
| 15388 */ | |
| 15389 function update(object, path, updater) { | |
| 15390 return object == null ? object : baseUpdate(object, path, castFunction(updater)); | |
| 15391 } | |
| 15392 | |
| 15393 /** | |
| 15394 * This method is like `_.update` except that it accepts `customizer` which is | |
| 15395 * invoked to produce the objects of `path`. If `customizer` returns `undefined` | |
| 15396 * path creation is handled by the method instead. The `customizer` is invoked | |
| 15397 * with three arguments: (nsValue, key, nsObject). | |
| 15398 * | |
| 15399 * **Note:** This method mutates `object`. | |
| 15400 * | |
| 15401 * @static | |
| 15402 * @memberOf _ | |
| 15403 * @since 4.6.0 | |
| 15404 * @category Object | |
| 15405 * @param {Object} object The object to modify. | |
| 15406 * @param {Array|string} path The path of the property to set. | |
| 15407 * @param {Function} updater The function to produce the updated value. | |
| 15408 * @param {Function} [customizer] The function to customize assigned values. | |
| 15409 * @returns {Object} Returns `object`. | |
| 15410 * @example | |
| 15411 * | |
| 15412 * var object = {}; | |
| 15413 * | |
| 15414 * _.updateWith(object, '[0][1]', _.constant('a'), Object); | |
| 15415 * // => { '0': { '1': 'a' } } | |
| 15416 */ | |
| 15417 function updateWith(object, path, updater, customizer) { | |
| 15418 customizer = typeof customizer == 'function' ? customizer : undefined; | |
| 15419 return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer); | |
| 15420 } | |
| 15421 | |
| 15422 /** | |
| 15423 * Creates an array of the own enumerable string keyed property values of `object`. | |
| 15424 * | |
| 15425 * **Note:** Non-object values are coerced to objects. | |
| 15426 * | |
| 15427 * @static | |
| 15428 * @since 0.1.0 | |
| 15429 * @memberOf _ | |
| 15430 * @category Object | |
| 15431 * @param {Object} object The object to query. | |
| 15432 * @returns {Array} Returns the array of property values. | |
| 15433 * @example | |
| 15434 * | |
| 15435 * function Foo() { | |
| 15436 * this.a = 1; | |
| 15437 * this.b = 2; | |
| 15438 * } | |
| 15439 * | |
| 15440 * Foo.prototype.c = 3; | |
| 15441 * | |
| 15442 * _.values(new Foo); | |
| 15443 * // => [1, 2] (iteration order is not guaranteed) | |
| 15444 * | |
| 15445 * _.values('hi'); | |
| 15446 * // => ['h', 'i'] | |
| 15447 */ | |
| 15448 function values(object) { | |
| 15449 return object == null ? [] : baseValues(object, keys(object)); | |
| 15450 } | |
| 15451 | |
| 15452 /** | |
| 15453 * Creates an array of the own and inherited enumerable string keyed property | |
| 15454 * values of `object`. | |
| 15455 * | |
| 15456 * **Note:** Non-object values are coerced to objects. | |
| 15457 * | |
| 15458 * @static | |
| 15459 * @memberOf _ | |
| 15460 * @since 3.0.0 | |
| 15461 * @category Object | |
| 15462 * @param {Object} object The object to query. | |
| 15463 * @returns {Array} Returns the array of property values. | |
| 15464 * @example | |
| 15465 * | |
| 15466 * function Foo() { | |
| 15467 * this.a = 1; | |
| 15468 * this.b = 2; | |
| 15469 * } | |
| 15470 * | |
| 15471 * Foo.prototype.c = 3; | |
| 15472 * | |
| 15473 * _.valuesIn(new Foo); | |
| 15474 * // => [1, 2, 3] (iteration order is not guaranteed) | |
| 15475 */ | |
| 15476 function valuesIn(object) { | |
| 15477 return object == null ? [] : baseValues(object, keysIn(object)); | |
| 15478 } | |
| 15479 | |
| 15480 /*------------------------------------------------------------------------*/ | |
| 15481 | |
| 15482 /** | |
| 15483 * Clamps `number` within the inclusive `lower` and `upper` bounds. | |
| 15484 * | |
| 15485 * @static | |
| 15486 * @memberOf _ | |
| 15487 * @since 4.0.0 | |
| 15488 * @category Number | |
| 15489 * @param {number} number The number to clamp. | |
| 15490 * @param {number} [lower] The lower bound. | |
| 15491 * @param {number} upper The upper bound. | |
| 15492 * @returns {number} Returns the clamped number. | |
| 15493 * @example | |
| 15494 * | |
| 15495 * _.clamp(-10, -5, 5); | |
| 15496 * // => -5 | |
| 15497 * | |
| 15498 * _.clamp(10, -5, 5); | |
| 15499 * // => 5 | |
| 15500 */ | |
| 15501 function clamp(number, lower, upper) { | |
| 15502 if (upper === undefined) { | |
| 15503 upper = lower; | |
| 15504 lower = undefined; | |
| 15505 } | |
| 15506 if (upper !== undefined) { | |
| 15507 upper = toNumber(upper); | |
| 15508 upper = upper === upper ? upper : 0; | |
| 15509 } | |
| 15510 if (lower !== undefined) { | |
| 15511 lower = toNumber(lower); | |
| 15512 lower = lower === lower ? lower : 0; | |
| 15513 } | |
| 15514 return baseClamp(toNumber(number), lower, upper); | |
| 15515 } | |
| 15516 | |
| 15517 /** | |
| 15518 * Checks if `n` is between `start` and up to, but not including, `end`. If | |
| 15519 * `end` is not specified, it's set to `start` with `start` then set to `0`. | |
| 15520 * If `start` is greater than `end` the params are swapped to support | |
| 15521 * negative ranges. | |
| 15522 * | |
| 15523 * @static | |
| 15524 * @memberOf _ | |
| 15525 * @since 3.3.0 | |
| 15526 * @category Number | |
| 15527 * @param {number} number The number to check. | |
| 15528 * @param {number} [start=0] The start of the range. | |
| 15529 * @param {number} end The end of the range. | |
| 15530 * @returns {boolean} Returns `true` if `number` is in the range, else `false`. | |
| 15531 * @see _.range, _.rangeRight | |
| 15532 * @example | |
| 15533 * | |
| 15534 * _.inRange(3, 2, 4); | |
| 15535 * // => true | |
| 15536 * | |
| 15537 * _.inRange(4, 8); | |
| 15538 * // => true | |
| 15539 * | |
| 15540 * _.inRange(4, 2); | |
| 15541 * // => false | |
| 15542 * | |
| 15543 * _.inRange(2, 2); | |
| 15544 * // => false | |
| 15545 * | |
| 15546 * _.inRange(1.2, 2); | |
| 15547 * // => true | |
| 15548 * | |
| 15549 * _.inRange(5.2, 4); | |
| 15550 * // => false | |
| 15551 * | |
| 15552 * _.inRange(-3, -2, -6); | |
| 15553 * // => true | |
| 15554 */ | |
| 15555 function inRange(number, start, end) { | |
| 15556 start = toFinite(start); | |
| 15557 if (end === undefined) { | |
| 15558 end = start; | |
| 15559 start = 0; | |
| 15560 } else { | |
| 15561 end = toFinite(end); | |
| 15562 } | |
| 15563 number = toNumber(number); | |
| 15564 return baseInRange(number, start, end); | |
| 15565 } | |
| 15566 | |
| 15567 /** | |
| 15568 * Produces a random number between the inclusive `lower` and `upper` bounds. | |
| 15569 * If only one argument is provided a number between `0` and the given number | |
| 15570 * is returned. If `floating` is `true`, or either `lower` or `upper` are | |
| 15571 * floats, a floating-point number is returned instead of an integer. | |
| 15572 * | |
| 15573 * **Note:** JavaScript follows the IEEE-754 standard for resolving | |
| 15574 * floating-point values which can produce unexpected results. | |
| 15575 * | |
| 15576 * @static | |
| 15577 * @memberOf _ | |
| 15578 * @since 0.7.0 | |
| 15579 * @category Number | |
| 15580 * @param {number} [lower=0] The lower bound. | |
| 15581 * @param {number} [upper=1] The upper bound. | |
| 15582 * @param {boolean} [floating] Specify returning a floating-point number. | |
| 15583 * @returns {number} Returns the random number. | |
| 15584 * @example | |
| 15585 * | |
| 15586 * _.random(0, 5); | |
| 15587 * // => an integer between 0 and 5 | |
| 15588 * | |
| 15589 * _.random(5); | |
| 15590 * // => also an integer between 0 and 5 | |
| 15591 * | |
| 15592 * _.random(5, true); | |
| 15593 * // => a floating-point number between 0 and 5 | |
| 15594 * | |
| 15595 * _.random(1.2, 5.2); | |
| 15596 * // => a floating-point number between 1.2 and 5.2 | |
| 15597 */ | |
| 15598 function random(lower, upper, floating) { | |
| 15599 if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) { | |
| 15600 upper = floating = undefined; | |
| 15601 } | |
| 15602 if (floating === undefined) { | |
| 15603 if (typeof upper == 'boolean') { | |
| 15604 floating = upper; | |
| 15605 upper = undefined; | |
| 15606 } | |
| 15607 else if (typeof lower == 'boolean') { | |
| 15608 floating = lower; | |
| 15609 lower = undefined; | |
| 15610 } | |
| 15611 } | |
| 15612 if (lower === undefined && upper === undefined) { | |
| 15613 lower = 0; | |
| 15614 upper = 1; | |
| 15615 } | |
| 15616 else { | |
| 15617 lower = toFinite(lower); | |
| 15618 if (upper === undefined) { | |
| 15619 upper = lower; | |
| 15620 lower = 0; | |
| 15621 } else { | |
| 15622 upper = toFinite(upper); | |
| 15623 } | |
| 15624 } | |
| 15625 if (lower > upper) { | |
| 15626 var temp = lower; | |
| 15627 lower = upper; | |
| 15628 upper = temp; | |
| 15629 } | |
| 15630 if (floating || lower % 1 || upper % 1) { | |
| 15631 var rand = nativeRandom(); | |
| 15632 return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper); | |
| 15633 } | |
| 15634 return baseRandom(lower, upper); | |
| 15635 } | |
| 15636 | |
| 15637 /*------------------------------------------------------------------------*/ | |
| 15638 | |
| 15639 /** | |
| 15640 * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase). | |
| 15641 * | |
| 15642 * @static | |
| 15643 * @memberOf _ | |
| 15644 * @since 3.0.0 | |
| 15645 * @category String | |
| 15646 * @param {string} [string=''] The string to convert. | |
| 15647 * @returns {string} Returns the camel cased string. | |
| 15648 * @example | |
| 15649 * | |
| 15650 * _.camelCase('Foo Bar'); | |
| 15651 * // => 'fooBar' | |
| 15652 * | |
| 15653 * _.camelCase('--foo-bar--'); | |
| 15654 * // => 'fooBar' | |
| 15655 * | |
| 15656 * _.camelCase('__FOO_BAR__'); | |
| 15657 * // => 'fooBar' | |
| 15658 */ | |
| 15659 var camelCase = createCompounder(function(result, word, index) { | |
| 15660 word = word.toLowerCase(); | |
| 15661 return result + (index ? capitalize(word) : word); | |
| 15662 }); | |
| 15663 | |
| 15664 /** | |
| 15665 * Converts the first character of `string` to upper case and the remaining | |
| 15666 * to lower case. | |
| 15667 * | |
| 15668 * @static | |
| 15669 * @memberOf _ | |
| 15670 * @since 3.0.0 | |
| 15671 * @category String | |
| 15672 * @param {string} [string=''] The string to capitalize. | |
| 15673 * @returns {string} Returns the capitalized string. | |
| 15674 * @example | |
| 15675 * | |
| 15676 * _.capitalize('FRED'); | |
| 15677 * // => 'Fred' | |
| 15678 */ | |
| 15679 function capitalize(string) { | |
| 15680 return upperFirst(toString(string).toLowerCase()); | |
| 15681 } | |
| 15682 | |
| 15683 /** | |
| 15684 * Deburrs `string` by converting | |
| 15685 * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table) | |
| 15686 * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A) | |
| 15687 * letters to basic Latin letters and removing | |
| 15688 * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). | |
| 15689 * | |
| 15690 * @static | |
| 15691 * @memberOf _ | |
| 15692 * @since 3.0.0 | |
| 15693 * @category String | |
| 15694 * @param {string} [string=''] The string to deburr. | |
| 15695 * @returns {string} Returns the deburred string. | |
| 15696 * @example | |
| 15697 * | |
| 15698 * _.deburr('déjà vu'); | |
| 15699 * // => 'deja vu' | |
| 15700 */ | |
| 15701 function deburr(string) { | |
| 15702 string = toString(string); | |
| 15703 return string && string.replace(reLatin, deburrLetter).replace(reComboMark, ''); | |
| 15704 } | |
| 15705 | |
| 15706 /** | |
| 15707 * Checks if `string` ends with the given target string. | |
| 15708 * | |
| 15709 * @static | |
| 15710 * @memberOf _ | |
| 15711 * @since 3.0.0 | |
| 15712 * @category String | |
| 15713 * @param {string} [string=''] The string to inspect. | |
| 15714 * @param {string} [target] The string to search for. | |
| 15715 * @param {number} [position=string.length] The position to search up to. | |
| 15716 * @returns {boolean} Returns `true` if `string` ends with `target`, | |
| 15717 * else `false`. | |
| 15718 * @example | |
| 15719 * | |
| 15720 * _.endsWith('abc', 'c'); | |
| 15721 * // => true | |
| 15722 * | |
| 15723 * _.endsWith('abc', 'b'); | |
| 15724 * // => false | |
| 15725 * | |
| 15726 * _.endsWith('abc', 'b', 2); | |
| 15727 * // => true | |
| 15728 */ | |
| 15729 function endsWith(string, target, position) { | |
| 15730 string = toString(string); | |
| 15731 target = baseToString(target); | |
| 15732 | |
| 15733 var length = string.length; | |
| 15734 position = position === undefined | |
| 15735 ? length | |
| 15736 : baseClamp(toInteger(position), 0, length); | |
| 15737 | |
| 15738 var end = position; | |
| 15739 position -= target.length; | |
| 15740 return position >= 0 && string.slice(position, end) == target; | |
| 15741 } | |
| 15742 | |
| 15743 /** | |
| 15744 * Converts the characters "&", "<", ">", '"', and "'" in `string` to their | |
| 15745 * corresponding HTML entities. | |
| 15746 * | |
| 15747 * **Note:** No other characters are escaped. To escape additional | |
| 15748 * characters use a third-party library like [_he_](https://mths.be/he). | |
| 15749 * | |
| 15750 * Though the ">" character is escaped for symmetry, characters like | |
| 15751 * ">" and "/" don't need escaping in HTML and have no special meaning | |
| 15752 * unless they're part of a tag or unquoted attribute value. See | |
| 15753 * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) | |
| 15754 * (under "semi-related fun fact") for more details. | |
| 15755 * | |
| 15756 * When working with HTML you should always | |
| 15757 * [quote attribute values](http://wonko.com/post/html-escaping) to reduce | |
| 15758 * XSS vectors. | |
| 15759 * | |
| 15760 * @static | |
| 15761 * @since 0.1.0 | |
| 15762 * @memberOf _ | |
| 15763 * @category String | |
| 15764 * @param {string} [string=''] The string to escape. | |
| 15765 * @returns {string} Returns the escaped string. | |
| 15766 * @example | |
| 15767 * | |
| 15768 * _.escape('fred, barney, & pebbles'); | |
| 15769 * // => 'fred, barney, & pebbles' | |
| 15770 */ | |
| 15771 function escape(string) { | |
| 15772 string = toString(string); | |
| 15773 return (string && reHasUnescapedHtml.test(string)) | |
| 15774 ? string.replace(reUnescapedHtml, escapeHtmlChar) | |
| 15775 : string; | |
| 15776 } | |
| 15777 | |
| 15778 /** | |
| 15779 * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+", | |
| 15780 * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`. | |
| 15781 * | |
| 15782 * @static | |
| 15783 * @memberOf _ | |
| 15784 * @since 3.0.0 | |
| 15785 * @category String | |
| 15786 * @param {string} [string=''] The string to escape. | |
| 15787 * @returns {string} Returns the escaped string. | |
| 15788 * @example | |
| 15789 * | |
| 15790 * _.escapeRegExp('[lodash](https://lodash.com/)'); | |
| 15791 * // => '\[lodash\]\(https://lodash\.com/\)' | |
| 15792 */ | |
| 15793 function escapeRegExp(string) { | |
| 15794 string = toString(string); | |
| 15795 return (string && reHasRegExpChar.test(string)) | |
| 15796 ? string.replace(reRegExpChar, '\\$&') | |
| 15797 : string; | |
| 15798 } | |
| 15799 | |
| 15800 /** | |
| 15801 * Converts `string` to | |
| 15802 * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles). | |
| 15803 * | |
| 15804 * @static | |
| 15805 * @memberOf _ | |
| 15806 * @since 3.0.0 | |
| 15807 * @category String | |
| 15808 * @param {string} [string=''] The string to convert. | |
| 15809 * @returns {string} Returns the kebab cased string. | |
| 15810 * @example | |
| 15811 * | |
| 15812 * _.kebabCase('Foo Bar'); | |
| 15813 * // => 'foo-bar' | |
| 15814 * | |
| 15815 * _.kebabCase('fooBar'); | |
| 15816 * // => 'foo-bar' | |
| 15817 * | |
| 15818 * _.kebabCase('__FOO_BAR__'); | |
| 15819 * // => 'foo-bar' | |
| 15820 */ | |
| 15821 var kebabCase = createCompounder(function(result, word, index) { | |
| 15822 return result + (index ? '-' : '') + word.toLowerCase(); | |
| 15823 }); | |
| 15824 | |
| 15825 /** | |
| 15826 * Converts `string`, as space separated words, to lower case. | |
| 15827 * | |
| 15828 * @static | |
| 15829 * @memberOf _ | |
| 15830 * @since 4.0.0 | |
| 15831 * @category String | |
| 15832 * @param {string} [string=''] The string to convert. | |
| 15833 * @returns {string} Returns the lower cased string. | |
| 15834 * @example | |
| 15835 * | |
| 15836 * _.lowerCase('--Foo-Bar--'); | |
| 15837 * // => 'foo bar' | |
| 15838 * | |
| 15839 * _.lowerCase('fooBar'); | |
| 15840 * // => 'foo bar' | |
| 15841 * | |
| 15842 * _.lowerCase('__FOO_BAR__'); | |
| 15843 * // => 'foo bar' | |
| 15844 */ | |
| 15845 var lowerCase = createCompounder(function(result, word, index) { | |
| 15846 return result + (index ? ' ' : '') + word.toLowerCase(); | |
| 15847 }); | |
| 15848 | |
| 15849 /** | |
| 15850 * Converts the first character of `string` to lower case. | |
| 15851 * | |
| 15852 * @static | |
| 15853 * @memberOf _ | |
| 15854 * @since 4.0.0 | |
| 15855 * @category String | |
| 15856 * @param {string} [string=''] The string to convert. | |
| 15857 * @returns {string} Returns the converted string. | |
| 15858 * @example | |
| 15859 * | |
| 15860 * _.lowerFirst('Fred'); | |
| 15861 * // => 'fred' | |
| 15862 * | |
| 15863 * _.lowerFirst('FRED'); | |
| 15864 * // => 'fRED' | |
| 15865 */ | |
| 15866 var lowerFirst = createCaseFirst('toLowerCase'); | |
| 15867 | |
| 15868 /** | |
| 15869 * Pads `string` on the left and right sides if it's shorter than `length`. | |
| 15870 * Padding characters are truncated if they can't be evenly divided by `length`. | |
| 15871 * | |
| 15872 * @static | |
| 15873 * @memberOf _ | |
| 15874 * @since 3.0.0 | |
| 15875 * @category String | |
| 15876 * @param {string} [string=''] The string to pad. | |
| 15877 * @param {number} [length=0] The padding length. | |
| 15878 * @param {string} [chars=' '] The string used as padding. | |
| 15879 * @returns {string} Returns the padded string. | |
| 15880 * @example | |
| 15881 * | |
| 15882 * _.pad('abc', 8); | |
| 15883 * // => ' abc ' | |
| 15884 * | |
| 15885 * _.pad('abc', 8, '_-'); | |
| 15886 * // => '_-abc_-_' | |
| 15887 * | |
| 15888 * _.pad('abc', 3); | |
| 15889 * // => 'abc' | |
| 15890 */ | |
| 15891 function pad(string, length, chars) { | |
| 15892 string = toString(string); | |
| 15893 length = toInteger(length); | |
| 15894 | |
| 15895 var strLength = length ? stringSize(string) : 0; | |
| 15896 if (!length || strLength >= length) { | |
| 15897 return string; | |
| 15898 } | |
| 15899 var mid = (length - strLength) / 2; | |
| 15900 return ( | |
| 15901 createPadding(nativeFloor(mid), chars) + | |
| 15902 string + | |
| 15903 createPadding(nativeCeil(mid), chars) | |
| 15904 ); | |
| 15905 } | |
| 15906 | |
| 15907 /** | |
| 15908 * Pads `string` on the right side if it's shorter than `length`. Padding | |
| 15909 * characters are truncated if they exceed `length`. | |
| 15910 * | |
| 15911 * @static | |
| 15912 * @memberOf _ | |
| 15913 * @since 4.0.0 | |
| 15914 * @category String | |
| 15915 * @param {string} [string=''] The string to pad. | |
| 15916 * @param {number} [length=0] The padding length. | |
| 15917 * @param {string} [chars=' '] The string used as padding. | |
| 15918 * @returns {string} Returns the padded string. | |
| 15919 * @example | |
| 15920 * | |
| 15921 * _.padEnd('abc', 6); | |
| 15922 * // => 'abc ' | |
| 15923 * | |
| 15924 * _.padEnd('abc', 6, '_-'); | |
| 15925 * // => 'abc_-_' | |
| 15926 * | |
| 15927 * _.padEnd('abc', 3); | |
| 15928 * // => 'abc' | |
| 15929 */ | |
| 15930 function padEnd(string, length, chars) { | |
| 15931 string = toString(string); | |
| 15932 length = toInteger(length); | |
| 15933 | |
| 15934 var strLength = length ? stringSize(string) : 0; | |
| 15935 return (length && strLength < length) | |
| 15936 ? (string + createPadding(length - strLength, chars)) | |
| 15937 : string; | |
| 15938 } | |
| 15939 | |
| 15940 /** | |
| 15941 * Pads `string` on the left side if it's shorter than `length`. Padding | |
| 15942 * characters are truncated if they exceed `length`. | |
| 15943 * | |
| 15944 * @static | |
| 15945 * @memberOf _ | |
| 15946 * @since 4.0.0 | |
| 15947 * @category String | |
| 15948 * @param {string} [string=''] The string to pad. | |
| 15949 * @param {number} [length=0] The padding length. | |
| 15950 * @param {string} [chars=' '] The string used as padding. | |
| 15951 * @returns {string} Returns the padded string. | |
| 15952 * @example | |
| 15953 * | |
| 15954 * _.padStart('abc', 6); | |
| 15955 * // => ' abc' | |
| 15956 * | |
| 15957 * _.padStart('abc', 6, '_-'); | |
| 15958 * // => '_-_abc' | |
| 15959 * | |
| 15960 * _.padStart('abc', 3); | |
| 15961 * // => 'abc' | |
| 15962 */ | |
| 15963 function padStart(string, length, chars) { | |
| 15964 string = toString(string); | |
| 15965 length = toInteger(length); | |
| 15966 | |
| 15967 var strLength = length ? stringSize(string) : 0; | |
| 15968 return (length && strLength < length) | |
| 15969 ? (createPadding(length - strLength, chars) + string) | |
| 15970 : string; | |
| 15971 } | |
| 15972 | |
| 15973 /** | |
| 15974 * Converts `string` to an integer of the specified radix. If `radix` is | |
| 15975 * `undefined` or `0`, a `radix` of `10` is used unless `value` is a | |
| 15976 * hexadecimal, in which case a `radix` of `16` is used. | |
| 15977 * | |
| 15978 * **Note:** This method aligns with the | |
| 15979 * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. | |
| 15980 * | |
| 15981 * @static | |
| 15982 * @memberOf _ | |
| 15983 * @since 1.1.0 | |
| 15984 * @category String | |
| 15985 * @param {string} string The string to convert. | |
| 15986 * @param {number} [radix=10] The radix to interpret `value` by. | |
| 15987 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 15988 * @returns {number} Returns the converted integer. | |
| 15989 * @example | |
| 15990 * | |
| 15991 * _.parseInt('08'); | |
| 15992 * // => 8 | |
| 15993 * | |
| 15994 * _.map(['6', '08', '10'], _.parseInt); | |
| 15995 * // => [6, 8, 10] | |
| 15996 */ | |
| 15997 function parseInt(string, radix, guard) { | |
| 15998 if (guard || radix == null) { | |
| 15999 radix = 0; | |
| 16000 } else if (radix) { | |
| 16001 radix = +radix; | |
| 16002 } | |
| 16003 return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0); | |
| 16004 } | |
| 16005 | |
| 16006 /** | |
| 16007 * Repeats the given string `n` times. | |
| 16008 * | |
| 16009 * @static | |
| 16010 * @memberOf _ | |
| 16011 * @since 3.0.0 | |
| 16012 * @category String | |
| 16013 * @param {string} [string=''] The string to repeat. | |
| 16014 * @param {number} [n=1] The number of times to repeat the string. | |
| 16015 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 16016 * @returns {string} Returns the repeated string. | |
| 16017 * @example | |
| 16018 * | |
| 16019 * _.repeat('*', 3); | |
| 16020 * // => '***' | |
| 16021 * | |
| 16022 * _.repeat('abc', 2); | |
| 16023 * // => 'abcabc' | |
| 16024 * | |
| 16025 * _.repeat('abc', 0); | |
| 16026 * // => '' | |
| 16027 */ | |
| 16028 function repeat(string, n, guard) { | |
| 16029 if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) { | |
| 16030 n = 1; | |
| 16031 } else { | |
| 16032 n = toInteger(n); | |
| 16033 } | |
| 16034 return baseRepeat(toString(string), n); | |
| 16035 } | |
| 16036 | |
| 16037 /** | |
| 16038 * Replaces matches for `pattern` in `string` with `replacement`. | |
| 16039 * | |
| 16040 * **Note:** This method is based on | |
| 16041 * [`String#replace`](https://mdn.io/String/replace). | |
| 16042 * | |
| 16043 * @static | |
| 16044 * @memberOf _ | |
| 16045 * @since 4.0.0 | |
| 16046 * @category String | |
| 16047 * @param {string} [string=''] The string to modify. | |
| 16048 * @param {RegExp|string} pattern The pattern to replace. | |
| 16049 * @param {Function|string} replacement The match replacement. | |
| 16050 * @returns {string} Returns the modified string. | |
| 16051 * @example | |
| 16052 * | |
| 16053 * _.replace('Hi Fred', 'Fred', 'Barney'); | |
| 16054 * // => 'Hi Barney' | |
| 16055 */ | |
| 16056 function replace() { | |
| 16057 var args = arguments, | |
| 16058 string = toString(args[0]); | |
| 16059 | |
| 16060 return args.length < 3 ? string : string.replace(args[1], args[2]); | |
| 16061 } | |
| 16062 | |
| 16063 /** | |
| 16064 * Converts `string` to | |
| 16065 * [snake case](https://en.wikipedia.org/wiki/Snake_case). | |
| 16066 * | |
| 16067 * @static | |
| 16068 * @memberOf _ | |
| 16069 * @since 3.0.0 | |
| 16070 * @category String | |
| 16071 * @param {string} [string=''] The string to convert. | |
| 16072 * @returns {string} Returns the snake cased string. | |
| 16073 * @example | |
| 16074 * | |
| 16075 * _.snakeCase('Foo Bar'); | |
| 16076 * // => 'foo_bar' | |
| 16077 * | |
| 16078 * _.snakeCase('fooBar'); | |
| 16079 * // => 'foo_bar' | |
| 16080 * | |
| 16081 * _.snakeCase('--FOO-BAR--'); | |
| 16082 * // => 'foo_bar' | |
| 16083 */ | |
| 16084 var snakeCase = createCompounder(function(result, word, index) { | |
| 16085 return result + (index ? '_' : '') + word.toLowerCase(); | |
| 16086 }); | |
| 16087 | |
| 16088 /** | |
| 16089 * Splits `string` by `separator`. | |
| 16090 * | |
| 16091 * **Note:** This method is based on | |
| 16092 * [`String#split`](https://mdn.io/String/split). | |
| 16093 * | |
| 16094 * @static | |
| 16095 * @memberOf _ | |
| 16096 * @since 4.0.0 | |
| 16097 * @category String | |
| 16098 * @param {string} [string=''] The string to split. | |
| 16099 * @param {RegExp|string} separator The separator pattern to split by. | |
| 16100 * @param {number} [limit] The length to truncate results to. | |
| 16101 * @returns {Array} Returns the string segments. | |
| 16102 * @example | |
| 16103 * | |
| 16104 * _.split('a-b-c', '-', 2); | |
| 16105 * // => ['a', 'b'] | |
| 16106 */ | |
| 16107 function split(string, separator, limit) { | |
| 16108 if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) { | |
| 16109 separator = limit = undefined; | |
| 16110 } | |
| 16111 limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0; | |
| 16112 if (!limit) { | |
| 16113 return []; | |
| 16114 } | |
| 16115 string = toString(string); | |
| 16116 if (string && ( | |
| 16117 typeof separator == 'string' || | |
| 16118 (separator != null && !isRegExp(separator)) | |
| 16119 )) { | |
| 16120 separator = baseToString(separator); | |
| 16121 if (!separator && hasUnicode(string)) { | |
| 16122 return castSlice(stringToArray(string), 0, limit); | |
| 16123 } | |
| 16124 } | |
| 16125 return string.split(separator, limit); | |
| 16126 } | |
| 16127 | |
| 16128 /** | |
| 16129 * Converts `string` to | |
| 16130 * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage). | |
| 16131 * | |
| 16132 * @static | |
| 16133 * @memberOf _ | |
| 16134 * @since 3.1.0 | |
| 16135 * @category String | |
| 16136 * @param {string} [string=''] The string to convert. | |
| 16137 * @returns {string} Returns the start cased string. | |
| 16138 * @example | |
| 16139 * | |
| 16140 * _.startCase('--foo-bar--'); | |
| 16141 * // => 'Foo Bar' | |
| 16142 * | |
| 16143 * _.startCase('fooBar'); | |
| 16144 * // => 'Foo Bar' | |
| 16145 * | |
| 16146 * _.startCase('__FOO_BAR__'); | |
| 16147 * // => 'FOO BAR' | |
| 16148 */ | |
| 16149 var startCase = createCompounder(function(result, word, index) { | |
| 16150 return result + (index ? ' ' : '') + upperFirst(word); | |
| 16151 }); | |
| 16152 | |
| 16153 /** | |
| 16154 * Checks if `string` starts with the given target string. | |
| 16155 * | |
| 16156 * @static | |
| 16157 * @memberOf _ | |
| 16158 * @since 3.0.0 | |
| 16159 * @category String | |
| 16160 * @param {string} [string=''] The string to inspect. | |
| 16161 * @param {string} [target] The string to search for. | |
| 16162 * @param {number} [position=0] The position to search from. | |
| 16163 * @returns {boolean} Returns `true` if `string` starts with `target`, | |
| 16164 * else `false`. | |
| 16165 * @example | |
| 16166 * | |
| 16167 * _.startsWith('abc', 'a'); | |
| 16168 * // => true | |
| 16169 * | |
| 16170 * _.startsWith('abc', 'b'); | |
| 16171 * // => false | |
| 16172 * | |
| 16173 * _.startsWith('abc', 'b', 1); | |
| 16174 * // => true | |
| 16175 */ | |
| 16176 function startsWith(string, target, position) { | |
| 16177 string = toString(string); | |
| 16178 position = position == null | |
| 16179 ? 0 | |
| 16180 : baseClamp(toInteger(position), 0, string.length); | |
| 16181 | |
| 16182 target = baseToString(target); | |
| 16183 return string.slice(position, position + target.length) == target; | |
| 16184 } | |
| 16185 | |
| 16186 /** | |
| 16187 * Creates a compiled template function that can interpolate data properties | |
| 16188 * in "interpolate" delimiters, HTML-escape interpolated data properties in | |
| 16189 * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data | |
| 16190 * properties may be accessed as free variables in the template. If a setting | |
| 16191 * object is given, it takes precedence over `_.templateSettings` values. | |
| 16192 * | |
| 16193 * **Note:** In the development build `_.template` utilizes | |
| 16194 * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) | |
| 16195 * for easier debugging. | |
| 16196 * | |
| 16197 * For more information on precompiling templates see | |
| 16198 * [lodash's custom builds documentation](https://lodash.com/custom-builds). | |
| 16199 * | |
| 16200 * For more information on Chrome extension sandboxes see | |
| 16201 * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). | |
| 16202 * | |
| 16203 * @static | |
| 16204 * @since 0.1.0 | |
| 16205 * @memberOf _ | |
| 16206 * @category String | |
| 16207 * @param {string} [string=''] The template string. | |
| 16208 * @param {Object} [options={}] The options object. | |
| 16209 * @param {RegExp} [options.escape=_.templateSettings.escape] | |
| 16210 * The HTML "escape" delimiter. | |
| 16211 * @param {RegExp} [options.evaluate=_.templateSettings.evaluate] | |
| 16212 * The "evaluate" delimiter. | |
| 16213 * @param {Object} [options.imports=_.templateSettings.imports] | |
| 16214 * An object to import into the template as free variables. | |
| 16215 * @param {RegExp} [options.interpolate=_.templateSettings.interpolate] | |
| 16216 * The "interpolate" delimiter. | |
| 16217 * @param {string} [options.sourceURL='lodash.templateSources[n]'] | |
| 16218 * The sourceURL of the compiled template. | |
| 16219 * @param {string} [options.variable='obj'] | |
| 16220 * The data object variable name. | |
| 16221 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 16222 * @returns {Function} Returns the compiled template function. | |
| 16223 * @example | |
| 16224 * | |
| 16225 * // Use the "interpolate" delimiter to create a compiled template. | |
| 16226 * var compiled = _.template('hello <%= user %>!'); | |
| 16227 * compiled({ 'user': 'fred' }); | |
| 16228 * // => 'hello fred!' | |
| 16229 * | |
| 16230 * // Use the HTML "escape" delimiter to escape data property values. | |
| 16231 * var compiled = _.template('<b><%- value %></b>'); | |
| 16232 * compiled({ 'value': '<script>' }); | |
| 16233 * // => '<b><script></b>' | |
| 16234 * | |
| 16235 * // Use the "evaluate" delimiter to execute JavaScript and generate HTML. | |
| 16236 * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>'); | |
| 16237 * compiled({ 'users': ['fred', 'barney'] }); | |
| 16238 * // => '<li>fred</li><li>barney</li>' | |
| 16239 * | |
| 16240 * // Use the internal `print` function in "evaluate" delimiters. | |
| 16241 * var compiled = _.template('<% print("hello " + user); %>!'); | |
| 16242 * compiled({ 'user': 'barney' }); | |
| 16243 * // => 'hello barney!' | |
| 16244 * | |
| 16245 * // Use the ES template literal delimiter as an "interpolate" delimiter. | |
| 16246 * // Disable support by replacing the "interpolate" delimiter. | |
| 16247 * var compiled = _.template('hello ${ user }!'); | |
| 16248 * compiled({ 'user': 'pebbles' }); | |
| 16249 * // => 'hello pebbles!' | |
| 16250 * | |
| 16251 * // Use backslashes to treat delimiters as plain text. | |
| 16252 * var compiled = _.template('<%= "\\<%- value %\\>" %>'); | |
| 16253 * compiled({ 'value': 'ignored' }); | |
| 16254 * // => '<%- value %>' | |
| 16255 * | |
| 16256 * // Use the `imports` option to import `jQuery` as `jq`. | |
| 16257 * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>'; | |
| 16258 * var compiled = _.template(text, { 'imports': { 'jq': jQuery } }); | |
| 16259 * compiled({ 'users': ['fred', 'barney'] }); | |
| 16260 * // => '<li>fred</li><li>barney</li>' | |
| 16261 * | |
| 16262 * // Use the `sourceURL` option to specify a custom sourceURL for the template. | |
| 16263 * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' }); | |
| 16264 * compiled(data); | |
| 16265 * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector. | |
| 16266 * | |
| 16267 * // Use the `variable` option to ensure a with-statement isn't used in the compiled template. | |
| 16268 * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' }); | |
| 16269 * compiled.source; | |
| 16270 * // => function(data) { | |
| 16271 * // var __t, __p = ''; | |
| 16272 * // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!'; | |
| 16273 * // return __p; | |
| 16274 * // } | |
| 16275 * | |
| 16276 * // Use custom template delimiters. | |
| 16277 * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g; | |
| 16278 * var compiled = _.template('hello {{ user }}!'); | |
| 16279 * compiled({ 'user': 'mustache' }); | |
| 16280 * // => 'hello mustache!' | |
| 16281 * | |
| 16282 * // Use the `source` property to inline compiled templates for meaningful | |
| 16283 * // line numbers in error messages and stack traces. | |
| 16284 * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\ | |
| 16285 * var JST = {\ | |
| 16286 * "main": ' + _.template(mainText).source + '\ | |
| 16287 * };\ | |
| 16288 * '); | |
| 16289 */ | |
| 16290 function template(string, options, guard) { | |
| 16291 // Based on John Resig's `tmpl` implementation | |
| 16292 // (http://ejohn.org/blog/javascript-micro-templating/) | |
| 16293 // and Laura Doktorova's doT.js (https://github.com/olado/doT). | |
| 16294 var settings = lodash.templateSettings; | |
| 16295 | |
| 16296 if (guard && isIterateeCall(string, options, guard)) { | |
| 16297 options = undefined; | |
| 16298 } | |
| 16299 string = toString(string); | |
| 16300 options = assignInWith({}, options, settings, customDefaultsAssignIn); | |
| 16301 | |
| 16302 var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn), | |
| 16303 importsKeys = keys(imports), | |
| 16304 importsValues = baseValues(imports, importsKeys); | |
| 16305 | |
| 16306 var isEscaping, | |
| 16307 isEvaluating, | |
| 16308 index = 0, | |
| 16309 interpolate = options.interpolate || reNoMatch, | |
| 16310 source = "__p += '"; | |
| 16311 | |
| 16312 // Compile the regexp to match each delimiter. | |
| 16313 var reDelimiters = RegExp( | |
| 16314 (options.escape || reNoMatch).source + '|' + | |
| 16315 interpolate.source + '|' + | |
| 16316 (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + | |
| 16317 (options.evaluate || reNoMatch).source + '|$' | |
| 16318 , 'g'); | |
| 16319 | |
| 16320 // Use a sourceURL for easier debugging. | |
| 16321 // The sourceURL gets injected into the source that's eval-ed, so be careful | |
| 16322 // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in | |
| 16323 // and escape the comment, thus injecting code that gets evaled. | |
| 16324 var sourceURL = '//# sourceURL=' + | |
| 16325 (hasOwnProperty.call(options, 'sourceURL') | |
| 16326 ? (options.sourceURL + '').replace(/\s/g, ' ') | |
| 16327 : ('lodash.templateSources[' + (++templateCounter) + ']') | |
| 16328 ) + '\n'; | |
| 16329 | |
| 16330 string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) { | |
| 16331 interpolateValue || (interpolateValue = esTemplateValue); | |
| 16332 | |
| 16333 // Escape characters that can't be included in string literals. | |
| 16334 source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar); | |
| 16335 | |
| 16336 // Replace delimiters with snippets. | |
| 16337 if (escapeValue) { | |
| 16338 isEscaping = true; | |
| 16339 source += "' +\n__e(" + escapeValue + ") +\n'"; | |
| 16340 } | |
| 16341 if (evaluateValue) { | |
| 16342 isEvaluating = true; | |
| 16343 source += "';\n" + evaluateValue + ";\n__p += '"; | |
| 16344 } | |
| 16345 if (interpolateValue) { | |
| 16346 source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'"; | |
| 16347 } | |
| 16348 index = offset + match.length; | |
| 16349 | |
| 16350 // The JS engine embedded in Adobe products needs `match` returned in | |
| 16351 // order to produce the correct `offset` value. | |
| 16352 return match; | |
| 16353 }); | |
| 16354 | |
| 16355 source += "';\n"; | |
| 16356 | |
| 16357 // If `variable` is not specified wrap a with-statement around the generated | |
| 16358 // code to add the data object to the top of the scope chain. | |
| 16359 var variable = hasOwnProperty.call(options, 'variable') && options.variable; | |
| 16360 if (!variable) { | |
| 16361 source = 'with (obj) {\n' + source + '\n}\n'; | |
| 16362 } | |
| 16363 // Cleanup code by stripping empty strings. | |
| 16364 source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source) | |
| 16365 .replace(reEmptyStringMiddle, '$1') | |
| 16366 .replace(reEmptyStringTrailing, '$1;'); | |
| 16367 | |
| 16368 // Frame code as the function body. | |
| 16369 source = 'function(' + (variable || 'obj') + ') {\n' + | |
| 16370 (variable | |
| 16371 ? '' | |
| 16372 : 'obj || (obj = {});\n' | |
| 16373 ) + | |
| 16374 "var __t, __p = ''" + | |
| 16375 (isEscaping | |
| 16376 ? ', __e = _.escape' | |
| 16377 : '' | |
| 16378 ) + | |
| 16379 (isEvaluating | |
| 16380 ? ', __j = Array.prototype.join;\n' + | |
| 16381 "function print() { __p += __j.call(arguments, '') }\n" | |
| 16382 : ';\n' | |
| 16383 ) + | |
| 16384 source + | |
| 16385 'return __p\n}'; | |
| 16386 | |
| 16387 var result = attempt(function() { | |
| 16388 return Function(importsKeys, sourceURL + 'return ' + source) | |
| 16389 .apply(undefined, importsValues); | |
| 16390 }); | |
| 16391 | |
| 16392 // Provide the compiled function's source by its `toString` method or | |
| 16393 // the `source` property as a convenience for inlining compiled templates. | |
| 16394 result.source = source; | |
| 16395 if (isError(result)) { | |
| 16396 throw result; | |
| 16397 } | |
| 16398 return result; | |
| 16399 } | |
| 16400 | |
| 16401 /** | |
| 16402 * Converts `string`, as a whole, to lower case just like | |
| 16403 * [String#toLowerCase](https://mdn.io/toLowerCase). | |
| 16404 * | |
| 16405 * @static | |
| 16406 * @memberOf _ | |
| 16407 * @since 4.0.0 | |
| 16408 * @category String | |
| 16409 * @param {string} [string=''] The string to convert. | |
| 16410 * @returns {string} Returns the lower cased string. | |
| 16411 * @example | |
| 16412 * | |
| 16413 * _.toLower('--Foo-Bar--'); | |
| 16414 * // => '--foo-bar--' | |
| 16415 * | |
| 16416 * _.toLower('fooBar'); | |
| 16417 * // => 'foobar' | |
| 16418 * | |
| 16419 * _.toLower('__FOO_BAR__'); | |
| 16420 * // => '__foo_bar__' | |
| 16421 */ | |
| 16422 function toLower(value) { | |
| 16423 return toString(value).toLowerCase(); | |
| 16424 } | |
| 16425 | |
| 16426 /** | |
| 16427 * Converts `string`, as a whole, to upper case just like | |
| 16428 * [String#toUpperCase](https://mdn.io/toUpperCase). | |
| 16429 * | |
| 16430 * @static | |
| 16431 * @memberOf _ | |
| 16432 * @since 4.0.0 | |
| 16433 * @category String | |
| 16434 * @param {string} [string=''] The string to convert. | |
| 16435 * @returns {string} Returns the upper cased string. | |
| 16436 * @example | |
| 16437 * | |
| 16438 * _.toUpper('--foo-bar--'); | |
| 16439 * // => '--FOO-BAR--' | |
| 16440 * | |
| 16441 * _.toUpper('fooBar'); | |
| 16442 * // => 'FOOBAR' | |
| 16443 * | |
| 16444 * _.toUpper('__foo_bar__'); | |
| 16445 * // => '__FOO_BAR__' | |
| 16446 */ | |
| 16447 function toUpper(value) { | |
| 16448 return toString(value).toUpperCase(); | |
| 16449 } | |
| 16450 | |
| 16451 /** | |
| 16452 * Removes leading and trailing whitespace or specified characters from `string`. | |
| 16453 * | |
| 16454 * @static | |
| 16455 * @memberOf _ | |
| 16456 * @since 3.0.0 | |
| 16457 * @category String | |
| 16458 * @param {string} [string=''] The string to trim. | |
| 16459 * @param {string} [chars=whitespace] The characters to trim. | |
| 16460 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 16461 * @returns {string} Returns the trimmed string. | |
| 16462 * @example | |
| 16463 * | |
| 16464 * _.trim(' abc '); | |
| 16465 * // => 'abc' | |
| 16466 * | |
| 16467 * _.trim('-_-abc-_-', '_-'); | |
| 16468 * // => 'abc' | |
| 16469 * | |
| 16470 * _.map([' foo ', ' bar '], _.trim); | |
| 16471 * // => ['foo', 'bar'] | |
| 16472 */ | |
| 16473 function trim(string, chars, guard) { | |
| 16474 string = toString(string); | |
| 16475 if (string && (guard || chars === undefined)) { | |
| 16476 return string.replace(reTrim, ''); | |
| 16477 } | |
| 16478 if (!string || !(chars = baseToString(chars))) { | |
| 16479 return string; | |
| 16480 } | |
| 16481 var strSymbols = stringToArray(string), | |
| 16482 chrSymbols = stringToArray(chars), | |
| 16483 start = charsStartIndex(strSymbols, chrSymbols), | |
| 16484 end = charsEndIndex(strSymbols, chrSymbols) + 1; | |
| 16485 | |
| 16486 return castSlice(strSymbols, start, end).join(''); | |
| 16487 } | |
| 16488 | |
| 16489 /** | |
| 16490 * Removes trailing whitespace or specified characters from `string`. | |
| 16491 * | |
| 16492 * @static | |
| 16493 * @memberOf _ | |
| 16494 * @since 4.0.0 | |
| 16495 * @category String | |
| 16496 * @param {string} [string=''] The string to trim. | |
| 16497 * @param {string} [chars=whitespace] The characters to trim. | |
| 16498 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 16499 * @returns {string} Returns the trimmed string. | |
| 16500 * @example | |
| 16501 * | |
| 16502 * _.trimEnd(' abc '); | |
| 16503 * // => ' abc' | |
| 16504 * | |
| 16505 * _.trimEnd('-_-abc-_-', '_-'); | |
| 16506 * // => '-_-abc' | |
| 16507 */ | |
| 16508 function trimEnd(string, chars, guard) { | |
| 16509 string = toString(string); | |
| 16510 if (string && (guard || chars === undefined)) { | |
| 16511 return string.replace(reTrimEnd, ''); | |
| 16512 } | |
| 16513 if (!string || !(chars = baseToString(chars))) { | |
| 16514 return string; | |
| 16515 } | |
| 16516 var strSymbols = stringToArray(string), | |
| 16517 end = charsEndIndex(strSymbols, stringToArray(chars)) + 1; | |
| 16518 | |
| 16519 return castSlice(strSymbols, 0, end).join(''); | |
| 16520 } | |
| 16521 | |
| 16522 /** | |
| 16523 * Removes leading whitespace or specified characters from `string`. | |
| 16524 * | |
| 16525 * @static | |
| 16526 * @memberOf _ | |
| 16527 * @since 4.0.0 | |
| 16528 * @category String | |
| 16529 * @param {string} [string=''] The string to trim. | |
| 16530 * @param {string} [chars=whitespace] The characters to trim. | |
| 16531 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 16532 * @returns {string} Returns the trimmed string. | |
| 16533 * @example | |
| 16534 * | |
| 16535 * _.trimStart(' abc '); | |
| 16536 * // => 'abc ' | |
| 16537 * | |
| 16538 * _.trimStart('-_-abc-_-', '_-'); | |
| 16539 * // => 'abc-_-' | |
| 16540 */ | |
| 16541 function trimStart(string, chars, guard) { | |
| 16542 string = toString(string); | |
| 16543 if (string && (guard || chars === undefined)) { | |
| 16544 return string.replace(reTrimStart, ''); | |
| 16545 } | |
| 16546 if (!string || !(chars = baseToString(chars))) { | |
| 16547 return string; | |
| 16548 } | |
| 16549 var strSymbols = stringToArray(string), | |
| 16550 start = charsStartIndex(strSymbols, stringToArray(chars)); | |
| 16551 | |
| 16552 return castSlice(strSymbols, start).join(''); | |
| 16553 } | |
| 16554 | |
| 16555 /** | |
| 16556 * Truncates `string` if it's longer than the given maximum string length. | |
| 16557 * The last characters of the truncated string are replaced with the omission | |
| 16558 * string which defaults to "...". | |
| 16559 * | |
| 16560 * @static | |
| 16561 * @memberOf _ | |
| 16562 * @since 4.0.0 | |
| 16563 * @category String | |
| 16564 * @param {string} [string=''] The string to truncate. | |
| 16565 * @param {Object} [options={}] The options object. | |
| 16566 * @param {number} [options.length=30] The maximum string length. | |
| 16567 * @param {string} [options.omission='...'] The string to indicate text is omitted. | |
| 16568 * @param {RegExp|string} [options.separator] The separator pattern to truncate to. | |
| 16569 * @returns {string} Returns the truncated string. | |
| 16570 * @example | |
| 16571 * | |
| 16572 * _.truncate('hi-diddly-ho there, neighborino'); | |
| 16573 * // => 'hi-diddly-ho there, neighbo...' | |
| 16574 * | |
| 16575 * _.truncate('hi-diddly-ho there, neighborino', { | |
| 16576 * 'length': 24, | |
| 16577 * 'separator': ' ' | |
| 16578 * }); | |
| 16579 * // => 'hi-diddly-ho there,...' | |
| 16580 * | |
| 16581 * _.truncate('hi-diddly-ho there, neighborino', { | |
| 16582 * 'length': 24, | |
| 16583 * 'separator': /,? +/ | |
| 16584 * }); | |
| 16585 * // => 'hi-diddly-ho there...' | |
| 16586 * | |
| 16587 * _.truncate('hi-diddly-ho there, neighborino', { | |
| 16588 * 'omission': ' [...]' | |
| 16589 * }); | |
| 16590 * // => 'hi-diddly-ho there, neig [...]' | |
| 16591 */ | |
| 16592 function truncate(string, options) { | |
| 16593 var length = DEFAULT_TRUNC_LENGTH, | |
| 16594 omission = DEFAULT_TRUNC_OMISSION; | |
| 16595 | |
| 16596 if (isObject(options)) { | |
| 16597 var separator = 'separator' in options ? options.separator : separator; | |
| 16598 length = 'length' in options ? toInteger(options.length) : length; | |
| 16599 omission = 'omission' in options ? baseToString(options.omission) : omission; | |
| 16600 } | |
| 16601 string = toString(string); | |
| 16602 | |
| 16603 var strLength = string.length; | |
| 16604 if (hasUnicode(string)) { | |
| 16605 var strSymbols = stringToArray(string); | |
| 16606 strLength = strSymbols.length; | |
| 16607 } | |
| 16608 if (length >= strLength) { | |
| 16609 return string; | |
| 16610 } | |
| 16611 var end = length - stringSize(omission); | |
| 16612 if (end < 1) { | |
| 16613 return omission; | |
| 16614 } | |
| 16615 var result = strSymbols | |
| 16616 ? castSlice(strSymbols, 0, end).join('') | |
| 16617 : string.slice(0, end); | |
| 16618 | |
| 16619 if (separator === undefined) { | |
| 16620 return result + omission; | |
| 16621 } | |
| 16622 if (strSymbols) { | |
| 16623 end += (result.length - end); | |
| 16624 } | |
| 16625 if (isRegExp(separator)) { | |
| 16626 if (string.slice(end).search(separator)) { | |
| 16627 var match, | |
| 16628 substring = result; | |
| 16629 | |
| 16630 if (!separator.global) { | |
| 16631 separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g'); | |
| 16632 } | |
| 16633 separator.lastIndex = 0; | |
| 16634 while ((match = separator.exec(substring))) { | |
| 16635 var newEnd = match.index; | |
| 16636 } | |
| 16637 result = result.slice(0, newEnd === undefined ? end : newEnd); | |
| 16638 } | |
| 16639 } else if (string.indexOf(baseToString(separator), end) != end) { | |
| 16640 var index = result.lastIndexOf(separator); | |
| 16641 if (index > -1) { | |
| 16642 result = result.slice(0, index); | |
| 16643 } | |
| 16644 } | |
| 16645 return result + omission; | |
| 16646 } | |
| 16647 | |
| 16648 /** | |
| 16649 * The inverse of `_.escape`; this method converts the HTML entities | |
| 16650 * `&`, `<`, `>`, `"`, and `'` in `string` to | |
| 16651 * their corresponding characters. | |
| 16652 * | |
| 16653 * **Note:** No other HTML entities are unescaped. To unescape additional | |
| 16654 * HTML entities use a third-party library like [_he_](https://mths.be/he). | |
| 16655 * | |
| 16656 * @static | |
| 16657 * @memberOf _ | |
| 16658 * @since 0.6.0 | |
| 16659 * @category String | |
| 16660 * @param {string} [string=''] The string to unescape. | |
| 16661 * @returns {string} Returns the unescaped string. | |
| 16662 * @example | |
| 16663 * | |
| 16664 * _.unescape('fred, barney, & pebbles'); | |
| 16665 * // => 'fred, barney, & pebbles' | |
| 16666 */ | |
| 16667 function unescape(string) { | |
| 16668 string = toString(string); | |
| 16669 return (string && reHasEscapedHtml.test(string)) | |
| 16670 ? string.replace(reEscapedHtml, unescapeHtmlChar) | |
| 16671 : string; | |
| 16672 } | |
| 16673 | |
| 16674 /** | |
| 16675 * Converts `string`, as space separated words, to upper case. | |
| 16676 * | |
| 16677 * @static | |
| 16678 * @memberOf _ | |
| 16679 * @since 4.0.0 | |
| 16680 * @category String | |
| 16681 * @param {string} [string=''] The string to convert. | |
| 16682 * @returns {string} Returns the upper cased string. | |
| 16683 * @example | |
| 16684 * | |
| 16685 * _.upperCase('--foo-bar'); | |
| 16686 * // => 'FOO BAR' | |
| 16687 * | |
| 16688 * _.upperCase('fooBar'); | |
| 16689 * // => 'FOO BAR' | |
| 16690 * | |
| 16691 * _.upperCase('__foo_bar__'); | |
| 16692 * // => 'FOO BAR' | |
| 16693 */ | |
| 16694 var upperCase = createCompounder(function(result, word, index) { | |
| 16695 return result + (index ? ' ' : '') + word.toUpperCase(); | |
| 16696 }); | |
| 16697 | |
| 16698 /** | |
| 16699 * Converts the first character of `string` to upper case. | |
| 16700 * | |
| 16701 * @static | |
| 16702 * @memberOf _ | |
| 16703 * @since 4.0.0 | |
| 16704 * @category String | |
| 16705 * @param {string} [string=''] The string to convert. | |
| 16706 * @returns {string} Returns the converted string. | |
| 16707 * @example | |
| 16708 * | |
| 16709 * _.upperFirst('fred'); | |
| 16710 * // => 'Fred' | |
| 16711 * | |
| 16712 * _.upperFirst('FRED'); | |
| 16713 * // => 'FRED' | |
| 16714 */ | |
| 16715 var upperFirst = createCaseFirst('toUpperCase'); | |
| 16716 | |
| 16717 /** | |
| 16718 * Splits `string` into an array of its words. | |
| 16719 * | |
| 16720 * @static | |
| 16721 * @memberOf _ | |
| 16722 * @since 3.0.0 | |
| 16723 * @category String | |
| 16724 * @param {string} [string=''] The string to inspect. | |
| 16725 * @param {RegExp|string} [pattern] The pattern to match words. | |
| 16726 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. | |
| 16727 * @returns {Array} Returns the words of `string`. | |
| 16728 * @example | |
| 16729 * | |
| 16730 * _.words('fred, barney, & pebbles'); | |
| 16731 * // => ['fred', 'barney', 'pebbles'] | |
| 16732 * | |
| 16733 * _.words('fred, barney, & pebbles', /[^, ]+/g); | |
| 16734 * // => ['fred', 'barney', '&', 'pebbles'] | |
| 16735 */ | |
| 16736 function words(string, pattern, guard) { | |
| 16737 string = toString(string); | |
| 16738 pattern = guard ? undefined : pattern; | |
| 16739 | |
| 16740 if (pattern === undefined) { | |
| 16741 return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string); | |
| 16742 } | |
| 16743 return string.match(pattern) || []; | |
| 16744 } | |
| 16745 | |
| 16746 /*------------------------------------------------------------------------*/ | |
| 16747 | |
| 16748 /** | |
| 16749 * Attempts to invoke `func`, returning either the result or the caught error | |
| 16750 * object. Any additional arguments are provided to `func` when it's invoked. | |
| 16751 * | |
| 16752 * @static | |
| 16753 * @memberOf _ | |
| 16754 * @since 3.0.0 | |
| 16755 * @category Util | |
| 16756 * @param {Function} func The function to attempt. | |
| 16757 * @param {...*} [args] The arguments to invoke `func` with. | |
| 16758 * @returns {*} Returns the `func` result or error object. | |
| 16759 * @example | |
| 16760 * | |
| 16761 * // Avoid throwing errors for invalid selectors. | |
| 16762 * var elements = _.attempt(function(selector) { | |
| 16763 * return document.querySelectorAll(selector); | |
| 16764 * }, '>_>'); | |
| 16765 * | |
| 16766 * if (_.isError(elements)) { | |
| 16767 * elements = []; | |
| 16768 * } | |
| 16769 */ | |
| 16770 var attempt = baseRest(function(func, args) { | |
| 16771 try { | |
| 16772 return apply(func, undefined, args); | |
| 16773 } catch (e) { | |
| 16774 return isError(e) ? e : new Error(e); | |
| 16775 } | |
| 16776 }); | |
| 16777 | |
| 16778 /** | |
| 16779 * Binds methods of an object to the object itself, overwriting the existing | |
| 16780 * method. | |
| 16781 * | |
| 16782 * **Note:** This method doesn't set the "length" property of bound functions. | |
| 16783 * | |
| 16784 * @static | |
| 16785 * @since 0.1.0 | |
| 16786 * @memberOf _ | |
| 16787 * @category Util | |
| 16788 * @param {Object} object The object to bind and assign the bound methods to. | |
| 16789 * @param {...(string|string[])} methodNames The object method names to bind. | |
| 16790 * @returns {Object} Returns `object`. | |
| 16791 * @example | |
| 16792 * | |
| 16793 * var view = { | |
| 16794 * 'label': 'docs', | |
| 16795 * 'click': function() { | |
| 16796 * console.log('clicked ' + this.label); | |
| 16797 * } | |
| 16798 * }; | |
| 16799 * | |
| 16800 * _.bindAll(view, ['click']); | |
| 16801 * jQuery(element).on('click', view.click); | |
| 16802 * // => Logs 'clicked docs' when clicked. | |
| 16803 */ | |
| 16804 var bindAll = flatRest(function(object, methodNames) { | |
| 16805 arrayEach(methodNames, function(key) { | |
| 16806 key = toKey(key); | |
| 16807 baseAssignValue(object, key, bind(object[key], object)); | |
| 16808 }); | |
| 16809 return object; | |
| 16810 }); | |
| 16811 | |
| 16812 /** | |
| 16813 * Creates a function that iterates over `pairs` and invokes the corresponding | |
| 16814 * function of the first predicate to return truthy. The predicate-function | |
| 16815 * pairs are invoked with the `this` binding and arguments of the created | |
| 16816 * function. | |
| 16817 * | |
| 16818 * @static | |
| 16819 * @memberOf _ | |
| 16820 * @since 4.0.0 | |
| 16821 * @category Util | |
| 16822 * @param {Array} pairs The predicate-function pairs. | |
| 16823 * @returns {Function} Returns the new composite function. | |
| 16824 * @example | |
| 16825 * | |
| 16826 * var func = _.cond([ | |
| 16827 * [_.matches({ 'a': 1 }), _.constant('matches A')], | |
| 16828 * [_.conforms({ 'b': _.isNumber }), _.constant('matches B')], | |
| 16829 * [_.stubTrue, _.constant('no match')] | |
| 16830 * ]); | |
| 16831 * | |
| 16832 * func({ 'a': 1, 'b': 2 }); | |
| 16833 * // => 'matches A' | |
| 16834 * | |
| 16835 * func({ 'a': 0, 'b': 1 }); | |
| 16836 * // => 'matches B' | |
| 16837 * | |
| 16838 * func({ 'a': '1', 'b': '2' }); | |
| 16839 * // => 'no match' | |
| 16840 */ | |
| 16841 function cond(pairs) { | |
| 16842 var length = pairs == null ? 0 : pairs.length, | |
| 16843 toIteratee = getIteratee(); | |
| 16844 | |
| 16845 pairs = !length ? [] : arrayMap(pairs, function(pair) { | |
| 16846 if (typeof pair[1] != 'function') { | |
| 16847 throw new TypeError(FUNC_ERROR_TEXT); | |
| 16848 } | |
| 16849 return [toIteratee(pair[0]), pair[1]]; | |
| 16850 }); | |
| 16851 | |
| 16852 return baseRest(function(args) { | |
| 16853 var index = -1; | |
| 16854 while (++index < length) { | |
| 16855 var pair = pairs[index]; | |
| 16856 if (apply(pair[0], this, args)) { | |
| 16857 return apply(pair[1], this, args); | |
| 16858 } | |
| 16859 } | |
| 16860 }); | |
| 16861 } | |
| 16862 | |
| 16863 /** | |
| 16864 * Creates a function that invokes the predicate properties of `source` with | |
| 16865 * the corresponding property values of a given object, returning `true` if | |
| 16866 * all predicates return truthy, else `false`. | |
| 16867 * | |
| 16868 * **Note:** The created function is equivalent to `_.conformsTo` with | |
| 16869 * `source` partially applied. | |
| 16870 * | |
| 16871 * @static | |
| 16872 * @memberOf _ | |
| 16873 * @since 4.0.0 | |
| 16874 * @category Util | |
| 16875 * @param {Object} source The object of property predicates to conform to. | |
| 16876 * @returns {Function} Returns the new spec function. | |
| 16877 * @example | |
| 16878 * | |
| 16879 * var objects = [ | |
| 16880 * { 'a': 2, 'b': 1 }, | |
| 16881 * { 'a': 1, 'b': 2 } | |
| 16882 * ]; | |
| 16883 * | |
| 16884 * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } })); | |
| 16885 * // => [{ 'a': 1, 'b': 2 }] | |
| 16886 */ | |
| 16887 function conforms(source) { | |
| 16888 return baseConforms(baseClone(source, CLONE_DEEP_FLAG)); | |
| 16889 } | |
| 16890 | |
| 16891 /** | |
| 16892 * Creates a function that returns `value`. | |
| 16893 * | |
| 16894 * @static | |
| 16895 * @memberOf _ | |
| 16896 * @since 2.4.0 | |
| 16897 * @category Util | |
| 16898 * @param {*} value The value to return from the new function. | |
| 16899 * @returns {Function} Returns the new constant function. | |
| 16900 * @example | |
| 16901 * | |
| 16902 * var objects = _.times(2, _.constant({ 'a': 1 })); | |
| 16903 * | |
| 16904 * console.log(objects); | |
| 16905 * // => [{ 'a': 1 }, { 'a': 1 }] | |
| 16906 * | |
| 16907 * console.log(objects[0] === objects[1]); | |
| 16908 * // => true | |
| 16909 */ | |
| 16910 function constant(value) { | |
| 16911 return function() { | |
| 16912 return value; | |
| 16913 }; | |
| 16914 } | |
| 16915 | |
| 16916 /** | |
| 16917 * Checks `value` to determine whether a default value should be returned in | |
| 16918 * its place. The `defaultValue` is returned if `value` is `NaN`, `null`, | |
| 16919 * or `undefined`. | |
| 16920 * | |
| 16921 * @static | |
| 16922 * @memberOf _ | |
| 16923 * @since 4.14.0 | |
| 16924 * @category Util | |
| 16925 * @param {*} value The value to check. | |
| 16926 * @param {*} defaultValue The default value. | |
| 16927 * @returns {*} Returns the resolved value. | |
| 16928 * @example | |
| 16929 * | |
| 16930 * _.defaultTo(1, 10); | |
| 16931 * // => 1 | |
| 16932 * | |
| 16933 * _.defaultTo(undefined, 10); | |
| 16934 * // => 10 | |
| 16935 */ | |
| 16936 function defaultTo(value, defaultValue) { | |
| 16937 return (value == null || value !== value) ? defaultValue : value; | |
| 16938 } | |
| 16939 | |
| 16940 /** | |
| 16941 * Creates a function that returns the result of invoking the given functions | |
| 16942 * with the `this` binding of the created function, where each successive | |
| 16943 * invocation is supplied the return value of the previous. | |
| 16944 * | |
| 16945 * @static | |
| 16946 * @memberOf _ | |
| 16947 * @since 3.0.0 | |
| 16948 * @category Util | |
| 16949 * @param {...(Function|Function[])} [funcs] The functions to invoke. | |
| 16950 * @returns {Function} Returns the new composite function. | |
| 16951 * @see _.flowRight | |
| 16952 * @example | |
| 16953 * | |
| 16954 * function square(n) { | |
| 16955 * return n * n; | |
| 16956 * } | |
| 16957 * | |
| 16958 * var addSquare = _.flow([_.add, square]); | |
| 16959 * addSquare(1, 2); | |
| 16960 * // => 9 | |
| 16961 */ | |
| 16962 var flow = createFlow(); | |
| 16963 | |
| 16964 /** | |
| 16965 * This method is like `_.flow` except that it creates a function that | |
| 16966 * invokes the given functions from right to left. | |
| 16967 * | |
| 16968 * @static | |
| 16969 * @since 3.0.0 | |
| 16970 * @memberOf _ | |
| 16971 * @category Util | |
| 16972 * @param {...(Function|Function[])} [funcs] The functions to invoke. | |
| 16973 * @returns {Function} Returns the new composite function. | |
| 16974 * @see _.flow | |
| 16975 * @example | |
| 16976 * | |
| 16977 * function square(n) { | |
| 16978 * return n * n; | |
| 16979 * } | |
| 16980 * | |
| 16981 * var addSquare = _.flowRight([square, _.add]); | |
| 16982 * addSquare(1, 2); | |
| 16983 * // => 9 | |
| 16984 */ | |
| 16985 var flowRight = createFlow(true); | |
| 16986 | |
| 16987 /** | |
| 16988 * This method returns the first argument it receives. | |
| 16989 * | |
| 16990 * @static | |
| 16991 * @since 0.1.0 | |
| 16992 * @memberOf _ | |
| 16993 * @category Util | |
| 16994 * @param {*} value Any value. | |
| 16995 * @returns {*} Returns `value`. | |
| 16996 * @example | |
| 16997 * | |
| 16998 * var object = { 'a': 1 }; | |
| 16999 * | |
| 17000 * console.log(_.identity(object) === object); | |
| 17001 * // => true | |
| 17002 */ | |
| 17003 function identity(value) { | |
| 17004 return value; | |
| 17005 } | |
| 17006 | |
| 17007 /** | |
| 17008 * Creates a function that invokes `func` with the arguments of the created | |
| 17009 * function. If `func` is a property name, the created function returns the | |
| 17010 * property value for a given element. If `func` is an array or object, the | |
| 17011 * created function returns `true` for elements that contain the equivalent | |
| 17012 * source properties, otherwise it returns `false`. | |
| 17013 * | |
| 17014 * @static | |
| 17015 * @since 4.0.0 | |
| 17016 * @memberOf _ | |
| 17017 * @category Util | |
| 17018 * @param {*} [func=_.identity] The value to convert to a callback. | |
| 17019 * @returns {Function} Returns the callback. | |
| 17020 * @example | |
| 17021 * | |
| 17022 * var users = [ | |
| 17023 * { 'user': 'barney', 'age': 36, 'active': true }, | |
| 17024 * { 'user': 'fred', 'age': 40, 'active': false } | |
| 17025 * ]; | |
| 17026 * | |
| 17027 * // The `_.matches` iteratee shorthand. | |
| 17028 * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true })); | |
| 17029 * // => [{ 'user': 'barney', 'age': 36, 'active': true }] | |
| 17030 * | |
| 17031 * // The `_.matchesProperty` iteratee shorthand. | |
| 17032 * _.filter(users, _.iteratee(['user', 'fred'])); | |
| 17033 * // => [{ 'user': 'fred', 'age': 40 }] | |
| 17034 * | |
| 17035 * // The `_.property` iteratee shorthand. | |
| 17036 * _.map(users, _.iteratee('user')); | |
| 17037 * // => ['barney', 'fred'] | |
| 17038 * | |
| 17039 * // Create custom iteratee shorthands. | |
| 17040 * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) { | |
| 17041 * return !_.isRegExp(func) ? iteratee(func) : function(string) { | |
| 17042 * return func.test(string); | |
| 17043 * }; | |
| 17044 * }); | |
| 17045 * | |
| 17046 * _.filter(['abc', 'def'], /ef/); | |
| 17047 * // => ['def'] | |
| 17048 */ | |
| 17049 function iteratee(func) { | |
| 17050 return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG)); | |
| 17051 } | |
| 17052 | |
| 17053 /** | |
| 17054 * Creates a function that performs a partial deep comparison between a given | |
| 17055 * object and `source`, returning `true` if the given object has equivalent | |
| 17056 * property values, else `false`. | |
| 17057 * | |
| 17058 * **Note:** The created function is equivalent to `_.isMatch` with `source` | |
| 17059 * partially applied. | |
| 17060 * | |
| 17061 * Partial comparisons will match empty array and empty object `source` | |
| 17062 * values against any array or object value, respectively. See `_.isEqual` | |
| 17063 * for a list of supported value comparisons. | |
| 17064 * | |
| 17065 * **Note:** Multiple values can be checked by combining several matchers | |
| 17066 * using `_.overSome` | |
| 17067 * | |
| 17068 * @static | |
| 17069 * @memberOf _ | |
| 17070 * @since 3.0.0 | |
| 17071 * @category Util | |
| 17072 * @param {Object} source The object of property values to match. | |
| 17073 * @returns {Function} Returns the new spec function. | |
| 17074 * @example | |
| 17075 * | |
| 17076 * var objects = [ | |
| 17077 * { 'a': 1, 'b': 2, 'c': 3 }, | |
| 17078 * { 'a': 4, 'b': 5, 'c': 6 } | |
| 17079 * ]; | |
| 17080 * | |
| 17081 * _.filter(objects, _.matches({ 'a': 4, 'c': 6 })); | |
| 17082 * // => [{ 'a': 4, 'b': 5, 'c': 6 }] | |
| 17083 * | |
| 17084 * // Checking for several possible values | |
| 17085 * _.filter(users, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })])); | |
| 17086 * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }] | |
| 17087 */ | |
| 17088 function matches(source) { | |
| 17089 return baseMatches(baseClone(source, CLONE_DEEP_FLAG)); | |
| 17090 } | |
| 17091 | |
| 17092 /** | |
| 17093 * Creates a function that performs a partial deep comparison between the | |
| 17094 * value at `path` of a given object to `srcValue`, returning `true` if the | |
| 17095 * object value is equivalent, else `false`. | |
| 17096 * | |
| 17097 * **Note:** Partial comparisons will match empty array and empty object | |
| 17098 * `srcValue` values against any array or object value, respectively. See | |
| 17099 * `_.isEqual` for a list of supported value comparisons. | |
| 17100 * | |
| 17101 * **Note:** Multiple values can be checked by combining several matchers | |
| 17102 * using `_.overSome` | |
| 17103 * | |
| 17104 * @static | |
| 17105 * @memberOf _ | |
| 17106 * @since 3.2.0 | |
| 17107 * @category Util | |
| 17108 * @param {Array|string} path The path of the property to get. | |
| 17109 * @param {*} srcValue The value to match. | |
| 17110 * @returns {Function} Returns the new spec function. | |
| 17111 * @example | |
| 17112 * | |
| 17113 * var objects = [ | |
| 17114 * { 'a': 1, 'b': 2, 'c': 3 }, | |
| 17115 * { 'a': 4, 'b': 5, 'c': 6 } | |
| 17116 * ]; | |
| 17117 * | |
| 17118 * _.find(objects, _.matchesProperty('a', 4)); | |
| 17119 * // => { 'a': 4, 'b': 5, 'c': 6 } | |
| 17120 * | |
| 17121 * // Checking for several possible values | |
| 17122 * _.filter(users, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)])); | |
| 17123 * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }] | |
| 17124 */ | |
| 17125 function matchesProperty(path, srcValue) { | |
| 17126 return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG)); | |
| 17127 } | |
| 17128 | |
| 17129 /** | |
| 17130 * Creates a function that invokes the method at `path` of a given object. | |
| 17131 * Any additional arguments are provided to the invoked method. | |
| 17132 * | |
| 17133 * @static | |
| 17134 * @memberOf _ | |
| 17135 * @since 3.7.0 | |
| 17136 * @category Util | |
| 17137 * @param {Array|string} path The path of the method to invoke. | |
| 17138 * @param {...*} [args] The arguments to invoke the method with. | |
| 17139 * @returns {Function} Returns the new invoker function. | |
| 17140 * @example | |
| 17141 * | |
| 17142 * var objects = [ | |
| 17143 * { 'a': { 'b': _.constant(2) } }, | |
| 17144 * { 'a': { 'b': _.constant(1) } } | |
| 17145 * ]; | |
| 17146 * | |
| 17147 * _.map(objects, _.method('a.b')); | |
| 17148 * // => [2, 1] | |
| 17149 * | |
| 17150 * _.map(objects, _.method(['a', 'b'])); | |
| 17151 * // => [2, 1] | |
| 17152 */ | |
| 17153 var method = baseRest(function(path, args) { | |
| 17154 return function(object) { | |
| 17155 return baseInvoke(object, path, args); | |
| 17156 }; | |
| 17157 }); | |
| 17158 | |
| 17159 /** | |
| 17160 * The opposite of `_.method`; this method creates a function that invokes | |
| 17161 * the method at a given path of `object`. Any additional arguments are | |
| 17162 * provided to the invoked method. | |
| 17163 * | |
| 17164 * @static | |
| 17165 * @memberOf _ | |
| 17166 * @since 3.7.0 | |
| 17167 * @category Util | |
| 17168 * @param {Object} object The object to query. | |
| 17169 * @param {...*} [args] The arguments to invoke the method with. | |
| 17170 * @returns {Function} Returns the new invoker function. | |
| 17171 * @example | |
| 17172 * | |
| 17173 * var array = _.times(3, _.constant), | |
| 17174 * object = { 'a': array, 'b': array, 'c': array }; | |
| 17175 * | |
| 17176 * _.map(['a[2]', 'c[0]'], _.methodOf(object)); | |
| 17177 * // => [2, 0] | |
| 17178 * | |
| 17179 * _.map([['a', '2'], ['c', '0']], _.methodOf(object)); | |
| 17180 * // => [2, 0] | |
| 17181 */ | |
| 17182 var methodOf = baseRest(function(object, args) { | |
| 17183 return function(path) { | |
| 17184 return baseInvoke(object, path, args); | |
| 17185 }; | |
| 17186 }); | |
| 17187 | |
| 17188 /** | |
| 17189 * Adds all own enumerable string keyed function properties of a source | |
| 17190 * object to the destination object. If `object` is a function, then methods | |
| 17191 * are added to its prototype as well. | |
| 17192 * | |
| 17193 * **Note:** Use `_.runInContext` to create a pristine `lodash` function to | |
| 17194 * avoid conflicts caused by modifying the original. | |
| 17195 * | |
| 17196 * @static | |
| 17197 * @since 0.1.0 | |
| 17198 * @memberOf _ | |
| 17199 * @category Util | |
| 17200 * @param {Function|Object} [object=lodash] The destination object. | |
| 17201 * @param {Object} source The object of functions to add. | |
| 17202 * @param {Object} [options={}] The options object. | |
| 17203 * @param {boolean} [options.chain=true] Specify whether mixins are chainable. | |
| 17204 * @returns {Function|Object} Returns `object`. | |
| 17205 * @example | |
| 17206 * | |
| 17207 * function vowels(string) { | |
| 17208 * return _.filter(string, function(v) { | |
| 17209 * return /[aeiou]/i.test(v); | |
| 17210 * }); | |
| 17211 * } | |
| 17212 * | |
| 17213 * _.mixin({ 'vowels': vowels }); | |
| 17214 * _.vowels('fred'); | |
| 17215 * // => ['e'] | |
| 17216 * | |
| 17217 * _('fred').vowels().value(); | |
| 17218 * // => ['e'] | |
| 17219 * | |
| 17220 * _.mixin({ 'vowels': vowels }, { 'chain': false }); | |
| 17221 * _('fred').vowels(); | |
| 17222 * // => ['e'] | |
| 17223 */ | |
| 17224 function mixin(object, source, options) { | |
| 17225 var props = keys(source), | |
| 17226 methodNames = baseFunctions(source, props); | |
| 17227 | |
| 17228 if (options == null && | |
| 17229 !(isObject(source) && (methodNames.length || !props.length))) { | |
| 17230 options = source; | |
| 17231 source = object; | |
| 17232 object = this; | |
| 17233 methodNames = baseFunctions(source, keys(source)); | |
| 17234 } | |
| 17235 var chain = !(isObject(options) && 'chain' in options) || !!options.chain, | |
| 17236 isFunc = isFunction(object); | |
| 17237 | |
| 17238 arrayEach(methodNames, function(methodName) { | |
| 17239 var func = source[methodName]; | |
| 17240 object[methodName] = func; | |
| 17241 if (isFunc) { | |
| 17242 object.prototype[methodName] = function() { | |
| 17243 var chainAll = this.__chain__; | |
| 17244 if (chain || chainAll) { | |
| 17245 var result = object(this.__wrapped__), | |
| 17246 actions = result.__actions__ = copyArray(this.__actions__); | |
| 17247 | |
| 17248 actions.push({ 'func': func, 'args': arguments, 'thisArg': object }); | |
| 17249 result.__chain__ = chainAll; | |
| 17250 return result; | |
| 17251 } | |
| 17252 return func.apply(object, arrayPush([this.value()], arguments)); | |
| 17253 }; | |
| 17254 } | |
| 17255 }); | |
| 17256 | |
| 17257 return object; | |
| 17258 } | |
| 17259 | |
| 17260 /** | |
| 17261 * Reverts the `_` variable to its previous value and returns a reference to | |
| 17262 * the `lodash` function. | |
| 17263 * | |
| 17264 * @static | |
| 17265 * @since 0.1.0 | |
| 17266 * @memberOf _ | |
| 17267 * @category Util | |
| 17268 * @returns {Function} Returns the `lodash` function. | |
| 17269 * @example | |
| 17270 * | |
| 17271 * var lodash = _.noConflict(); | |
| 17272 */ | |
| 17273 function noConflict() { | |
| 17274 if (root._ === this) { | |
| 17275 root._ = oldDash; | |
| 17276 } | |
| 17277 return this; | |
| 17278 } | |
| 17279 | |
| 17280 /** | |
| 17281 * This method returns `undefined`. | |
| 17282 * | |
| 17283 * @static | |
| 17284 * @memberOf _ | |
| 17285 * @since 2.3.0 | |
| 17286 * @category Util | |
| 17287 * @example | |
| 17288 * | |
| 17289 * _.times(2, _.noop); | |
| 17290 * // => [undefined, undefined] | |
| 17291 */ | |
| 17292 function noop() { | |
| 17293 // No operation performed. | |
| 17294 } | |
| 17295 | |
| 17296 /** | |
| 17297 * Creates a function that gets the argument at index `n`. If `n` is negative, | |
| 17298 * the nth argument from the end is returned. | |
| 17299 * | |
| 17300 * @static | |
| 17301 * @memberOf _ | |
| 17302 * @since 4.0.0 | |
| 17303 * @category Util | |
| 17304 * @param {number} [n=0] The index of the argument to return. | |
| 17305 * @returns {Function} Returns the new pass-thru function. | |
| 17306 * @example | |
| 17307 * | |
| 17308 * var func = _.nthArg(1); | |
| 17309 * func('a', 'b', 'c', 'd'); | |
| 17310 * // => 'b' | |
| 17311 * | |
| 17312 * var func = _.nthArg(-2); | |
| 17313 * func('a', 'b', 'c', 'd'); | |
| 17314 * // => 'c' | |
| 17315 */ | |
| 17316 function nthArg(n) { | |
| 17317 n = toInteger(n); | |
| 17318 return baseRest(function(args) { | |
| 17319 return baseNth(args, n); | |
| 17320 }); | |
| 17321 } | |
| 17322 | |
| 17323 /** | |
| 17324 * Creates a function that invokes `iteratees` with the arguments it receives | |
| 17325 * and returns their results. | |
| 17326 * | |
| 17327 * @static | |
| 17328 * @memberOf _ | |
| 17329 * @since 4.0.0 | |
| 17330 * @category Util | |
| 17331 * @param {...(Function|Function[])} [iteratees=[_.identity]] | |
| 17332 * The iteratees to invoke. | |
| 17333 * @returns {Function} Returns the new function. | |
| 17334 * @example | |
| 17335 * | |
| 17336 * var func = _.over([Math.max, Math.min]); | |
| 17337 * | |
| 17338 * func(1, 2, 3, 4); | |
| 17339 * // => [4, 1] | |
| 17340 */ | |
| 17341 var over = createOver(arrayMap); | |
| 17342 | |
| 17343 /** | |
| 17344 * Creates a function that checks if **all** of the `predicates` return | |
| 17345 * truthy when invoked with the arguments it receives. | |
| 17346 * | |
| 17347 * Following shorthands are possible for providing predicates. | |
| 17348 * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate. | |
| 17349 * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them. | |
| 17350 * | |
| 17351 * @static | |
| 17352 * @memberOf _ | |
| 17353 * @since 4.0.0 | |
| 17354 * @category Util | |
| 17355 * @param {...(Function|Function[])} [predicates=[_.identity]] | |
| 17356 * The predicates to check. | |
| 17357 * @returns {Function} Returns the new function. | |
| 17358 * @example | |
| 17359 * | |
| 17360 * var func = _.overEvery([Boolean, isFinite]); | |
| 17361 * | |
| 17362 * func('1'); | |
| 17363 * // => true | |
| 17364 * | |
| 17365 * func(null); | |
| 17366 * // => false | |
| 17367 * | |
| 17368 * func(NaN); | |
| 17369 * // => false | |
| 17370 */ | |
| 17371 var overEvery = createOver(arrayEvery); | |
| 17372 | |
| 17373 /** | |
| 17374 * Creates a function that checks if **any** of the `predicates` return | |
| 17375 * truthy when invoked with the arguments it receives. | |
| 17376 * | |
| 17377 * Following shorthands are possible for providing predicates. | |
| 17378 * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate. | |
| 17379 * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them. | |
| 17380 * | |
| 17381 * @static | |
| 17382 * @memberOf _ | |
| 17383 * @since 4.0.0 | |
| 17384 * @category Util | |
| 17385 * @param {...(Function|Function[])} [predicates=[_.identity]] | |
| 17386 * The predicates to check. | |
| 17387 * @returns {Function} Returns the new function. | |
| 17388 * @example | |
| 17389 * | |
| 17390 * var func = _.overSome([Boolean, isFinite]); | |
| 17391 * | |
| 17392 * func('1'); | |
| 17393 * // => true | |
| 17394 * | |
| 17395 * func(null); | |
| 17396 * // => true | |
| 17397 * | |
| 17398 * func(NaN); | |
| 17399 * // => false | |
| 17400 * | |
| 17401 * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }]) | |
| 17402 * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]]) | |
| 17403 */ | |
| 17404 var overSome = createOver(arraySome); | |
| 17405 | |
| 17406 /** | |
| 17407 * Creates a function that returns the value at `path` of a given object. | |
| 17408 * | |
| 17409 * @static | |
| 17410 * @memberOf _ | |
| 17411 * @since 2.4.0 | |
| 17412 * @category Util | |
| 17413 * @param {Array|string} path The path of the property to get. | |
| 17414 * @returns {Function} Returns the new accessor function. | |
| 17415 * @example | |
| 17416 * | |
| 17417 * var objects = [ | |
| 17418 * { 'a': { 'b': 2 } }, | |
| 17419 * { 'a': { 'b': 1 } } | |
| 17420 * ]; | |
| 17421 * | |
| 17422 * _.map(objects, _.property('a.b')); | |
| 17423 * // => [2, 1] | |
| 17424 * | |
| 17425 * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b'); | |
| 17426 * // => [1, 2] | |
| 17427 */ | |
| 17428 function property(path) { | |
| 17429 return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path); | |
| 17430 } | |
| 17431 | |
| 17432 /** | |
| 17433 * The opposite of `_.property`; this method creates a function that returns | |
| 17434 * the value at a given path of `object`. | |
| 17435 * | |
| 17436 * @static | |
| 17437 * @memberOf _ | |
| 17438 * @since 3.0.0 | |
| 17439 * @category Util | |
| 17440 * @param {Object} object The object to query. | |
| 17441 * @returns {Function} Returns the new accessor function. | |
| 17442 * @example | |
| 17443 * | |
| 17444 * var array = [0, 1, 2], | |
| 17445 * object = { 'a': array, 'b': array, 'c': array }; | |
| 17446 * | |
| 17447 * _.map(['a[2]', 'c[0]'], _.propertyOf(object)); | |
| 17448 * // => [2, 0] | |
| 17449 * | |
| 17450 * _.map([['a', '2'], ['c', '0']], _.propertyOf(object)); | |
| 17451 * // => [2, 0] | |
| 17452 */ | |
| 17453 function propertyOf(object) { | |
| 17454 return function(path) { | |
| 17455 return object == null ? undefined : baseGet(object, path); | |
| 17456 }; | |
| 17457 } | |
| 17458 | |
| 17459 /** | |
| 17460 * Creates an array of numbers (positive and/or negative) progressing from | |
| 17461 * `start` up to, but not including, `end`. A step of `-1` is used if a negative | |
| 17462 * `start` is specified without an `end` or `step`. If `end` is not specified, | |
| 17463 * it's set to `start` with `start` then set to `0`. | |
| 17464 * | |
| 17465 * **Note:** JavaScript follows the IEEE-754 standard for resolving | |
| 17466 * floating-point values which can produce unexpected results. | |
| 17467 * | |
| 17468 * @static | |
| 17469 * @since 0.1.0 | |
| 17470 * @memberOf _ | |
| 17471 * @category Util | |
| 17472 * @param {number} [start=0] The start of the range. | |
| 17473 * @param {number} end The end of the range. | |
| 17474 * @param {number} [step=1] The value to increment or decrement by. | |
| 17475 * @returns {Array} Returns the range of numbers. | |
| 17476 * @see _.inRange, _.rangeRight | |
| 17477 * @example | |
| 17478 * | |
| 17479 * _.range(4); | |
| 17480 * // => [0, 1, 2, 3] | |
| 17481 * | |
| 17482 * _.range(-4); | |
| 17483 * // => [0, -1, -2, -3] | |
| 17484 * | |
| 17485 * _.range(1, 5); | |
| 17486 * // => [1, 2, 3, 4] | |
| 17487 * | |
| 17488 * _.range(0, 20, 5); | |
| 17489 * // => [0, 5, 10, 15] | |
| 17490 * | |
| 17491 * _.range(0, -4, -1); | |
| 17492 * // => [0, -1, -2, -3] | |
| 17493 * | |
| 17494 * _.range(1, 4, 0); | |
| 17495 * // => [1, 1, 1] | |
| 17496 * | |
| 17497 * _.range(0); | |
| 17498 * // => [] | |
| 17499 */ | |
| 17500 var range = createRange(); | |
| 17501 | |
| 17502 /** | |
| 17503 * This method is like `_.range` except that it populates values in | |
| 17504 * descending order. | |
| 17505 * | |
| 17506 * @static | |
| 17507 * @memberOf _ | |
| 17508 * @since 4.0.0 | |
| 17509 * @category Util | |
| 17510 * @param {number} [start=0] The start of the range. | |
| 17511 * @param {number} end The end of the range. | |
| 17512 * @param {number} [step=1] The value to increment or decrement by. | |
| 17513 * @returns {Array} Returns the range of numbers. | |
| 17514 * @see _.inRange, _.range | |
| 17515 * @example | |
| 17516 * | |
| 17517 * _.rangeRight(4); | |
| 17518 * // => [3, 2, 1, 0] | |
| 17519 * | |
| 17520 * _.rangeRight(-4); | |
| 17521 * // => [-3, -2, -1, 0] | |
| 17522 * | |
| 17523 * _.rangeRight(1, 5); | |
| 17524 * // => [4, 3, 2, 1] | |
| 17525 * | |
| 17526 * _.rangeRight(0, 20, 5); | |
| 17527 * // => [15, 10, 5, 0] | |
| 17528 * | |
| 17529 * _.rangeRight(0, -4, -1); | |
| 17530 * // => [-3, -2, -1, 0] | |
| 17531 * | |
| 17532 * _.rangeRight(1, 4, 0); | |
| 17533 * // => [1, 1, 1] | |
| 17534 * | |
| 17535 * _.rangeRight(0); | |
| 17536 * // => [] | |
| 17537 */ | |
| 17538 var rangeRight = createRange(true); | |
| 17539 | |
| 17540 /** | |
| 17541 * This method returns a new empty array. | |
| 17542 * | |
| 17543 * @static | |
| 17544 * @memberOf _ | |
| 17545 * @since 4.13.0 | |
| 17546 * @category Util | |
| 17547 * @returns {Array} Returns the new empty array. | |
| 17548 * @example | |
| 17549 * | |
| 17550 * var arrays = _.times(2, _.stubArray); | |
| 17551 * | |
| 17552 * console.log(arrays); | |
| 17553 * // => [[], []] | |
| 17554 * | |
| 17555 * console.log(arrays[0] === arrays[1]); | |
| 17556 * // => false | |
| 17557 */ | |
| 17558 function stubArray() { | |
| 17559 return []; | |
| 17560 } | |
| 17561 | |
| 17562 /** | |
| 17563 * This method returns `false`. | |
| 17564 * | |
| 17565 * @static | |
| 17566 * @memberOf _ | |
| 17567 * @since 4.13.0 | |
| 17568 * @category Util | |
| 17569 * @returns {boolean} Returns `false`. | |
| 17570 * @example | |
| 17571 * | |
| 17572 * _.times(2, _.stubFalse); | |
| 17573 * // => [false, false] | |
| 17574 */ | |
| 17575 function stubFalse() { | |
| 17576 return false; | |
| 17577 } | |
| 17578 | |
| 17579 /** | |
| 17580 * This method returns a new empty object. | |
| 17581 * | |
| 17582 * @static | |
| 17583 * @memberOf _ | |
| 17584 * @since 4.13.0 | |
| 17585 * @category Util | |
| 17586 * @returns {Object} Returns the new empty object. | |
| 17587 * @example | |
| 17588 * | |
| 17589 * var objects = _.times(2, _.stubObject); | |
| 17590 * | |
| 17591 * console.log(objects); | |
| 17592 * // => [{}, {}] | |
| 17593 * | |
| 17594 * console.log(objects[0] === objects[1]); | |
| 17595 * // => false | |
| 17596 */ | |
| 17597 function stubObject() { | |
| 17598 return {}; | |
| 17599 } | |
| 17600 | |
| 17601 /** | |
| 17602 * This method returns an empty string. | |
| 17603 * | |
| 17604 * @static | |
| 17605 * @memberOf _ | |
| 17606 * @since 4.13.0 | |
| 17607 * @category Util | |
| 17608 * @returns {string} Returns the empty string. | |
| 17609 * @example | |
| 17610 * | |
| 17611 * _.times(2, _.stubString); | |
| 17612 * // => ['', ''] | |
| 17613 */ | |
| 17614 function stubString() { | |
| 17615 return ''; | |
| 17616 } | |
| 17617 | |
| 17618 /** | |
| 17619 * This method returns `true`. | |
| 17620 * | |
| 17621 * @static | |
| 17622 * @memberOf _ | |
| 17623 * @since 4.13.0 | |
| 17624 * @category Util | |
| 17625 * @returns {boolean} Returns `true`. | |
| 17626 * @example | |
| 17627 * | |
| 17628 * _.times(2, _.stubTrue); | |
| 17629 * // => [true, true] | |
| 17630 */ | |
| 17631 function stubTrue() { | |
| 17632 return true; | |
| 17633 } | |
| 17634 | |
| 17635 /** | |
| 17636 * Invokes the iteratee `n` times, returning an array of the results of | |
| 17637 * each invocation. The iteratee is invoked with one argument; (index). | |
| 17638 * | |
| 17639 * @static | |
| 17640 * @since 0.1.0 | |
| 17641 * @memberOf _ | |
| 17642 * @category Util | |
| 17643 * @param {number} n The number of times to invoke `iteratee`. | |
| 17644 * @param {Function} [iteratee=_.identity] The function invoked per iteration. | |
| 17645 * @returns {Array} Returns the array of results. | |
| 17646 * @example | |
| 17647 * | |
| 17648 * _.times(3, String); | |
| 17649 * // => ['0', '1', '2'] | |
| 17650 * | |
| 17651 * _.times(4, _.constant(0)); | |
| 17652 * // => [0, 0, 0, 0] | |
| 17653 */ | |
| 17654 function times(n, iteratee) { | |
| 17655 n = toInteger(n); | |
| 17656 if (n < 1 || n > MAX_SAFE_INTEGER) { | |
| 17657 return []; | |
| 17658 } | |
| 17659 var index = MAX_ARRAY_LENGTH, | |
| 17660 length = nativeMin(n, MAX_ARRAY_LENGTH); | |
| 17661 | |
| 17662 iteratee = getIteratee(iteratee); | |
| 17663 n -= MAX_ARRAY_LENGTH; | |
| 17664 | |
| 17665 var result = baseTimes(length, iteratee); | |
| 17666 while (++index < n) { | |
| 17667 iteratee(index); | |
| 17668 } | |
| 17669 return result; | |
| 17670 } | |
| 17671 | |
| 17672 /** | |
| 17673 * Converts `value` to a property path array. | |
| 17674 * | |
| 17675 * @static | |
| 17676 * @memberOf _ | |
| 17677 * @since 4.0.0 | |
| 17678 * @category Util | |
| 17679 * @param {*} value The value to convert. | |
| 17680 * @returns {Array} Returns the new property path array. | |
| 17681 * @example | |
| 17682 * | |
| 17683 * _.toPath('a.b.c'); | |
| 17684 * // => ['a', 'b', 'c'] | |
| 17685 * | |
| 17686 * _.toPath('a[0].b.c'); | |
| 17687 * // => ['a', '0', 'b', 'c'] | |
| 17688 */ | |
| 17689 function toPath(value) { | |
| 17690 if (isArray(value)) { | |
| 17691 return arrayMap(value, toKey); | |
| 17692 } | |
| 17693 return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value))); | |
| 17694 } | |
| 17695 | |
| 17696 /** | |
| 17697 * Generates a unique ID. If `prefix` is given, the ID is appended to it. | |
| 17698 * | |
| 17699 * @static | |
| 17700 * @since 0.1.0 | |
| 17701 * @memberOf _ | |
| 17702 * @category Util | |
| 17703 * @param {string} [prefix=''] The value to prefix the ID with. | |
| 17704 * @returns {string} Returns the unique ID. | |
| 17705 * @example | |
| 17706 * | |
| 17707 * _.uniqueId('contact_'); | |
| 17708 * // => 'contact_104' | |
| 17709 * | |
| 17710 * _.uniqueId(); | |
| 17711 * // => '105' | |
| 17712 */ | |
| 17713 function uniqueId(prefix) { | |
| 17714 var id = ++idCounter; | |
| 17715 return toString(prefix) + id; | |
| 17716 } | |
| 17717 | |
| 17718 /*------------------------------------------------------------------------*/ | |
| 17719 | |
| 17720 /** | |
| 17721 * Adds two numbers. | |
| 17722 * | |
| 17723 * @static | |
| 17724 * @memberOf _ | |
| 17725 * @since 3.4.0 | |
| 17726 * @category Math | |
| 17727 * @param {number} augend The first number in an addition. | |
| 17728 * @param {number} addend The second number in an addition. | |
| 17729 * @returns {number} Returns the total. | |
| 17730 * @example | |
| 17731 * | |
| 17732 * _.add(6, 4); | |
| 17733 * // => 10 | |
| 17734 */ | |
| 17735 var add = createMathOperation(function(augend, addend) { | |
| 17736 return augend + addend; | |
| 17737 }, 0); | |
| 17738 | |
| 17739 /** | |
| 17740 * Computes `number` rounded up to `precision`. | |
| 17741 * | |
| 17742 * @static | |
| 17743 * @memberOf _ | |
| 17744 * @since 3.10.0 | |
| 17745 * @category Math | |
| 17746 * @param {number} number The number to round up. | |
| 17747 * @param {number} [precision=0] The precision to round up to. | |
| 17748 * @returns {number} Returns the rounded up number. | |
| 17749 * @example | |
| 17750 * | |
| 17751 * _.ceil(4.006); | |
| 17752 * // => 5 | |
| 17753 * | |
| 17754 * _.ceil(6.004, 2); | |
| 17755 * // => 6.01 | |
| 17756 * | |
| 17757 * _.ceil(6040, -2); | |
| 17758 * // => 6100 | |
| 17759 */ | |
| 17760 var ceil = createRound('ceil'); | |
| 17761 | |
| 17762 /** | |
| 17763 * Divide two numbers. | |
| 17764 * | |
| 17765 * @static | |
| 17766 * @memberOf _ | |
| 17767 * @since 4.7.0 | |
| 17768 * @category Math | |
| 17769 * @param {number} dividend The first number in a division. | |
| 17770 * @param {number} divisor The second number in a division. | |
| 17771 * @returns {number} Returns the quotient. | |
| 17772 * @example | |
| 17773 * | |
| 17774 * _.divide(6, 4); | |
| 17775 * // => 1.5 | |
| 17776 */ | |
| 17777 var divide = createMathOperation(function(dividend, divisor) { | |
| 17778 return dividend / divisor; | |
| 17779 }, 1); | |
| 17780 | |
| 17781 /** | |
| 17782 * Computes `number` rounded down to `precision`. | |
| 17783 * | |
| 17784 * @static | |
| 17785 * @memberOf _ | |
| 17786 * @since 3.10.0 | |
| 17787 * @category Math | |
| 17788 * @param {number} number The number to round down. | |
| 17789 * @param {number} [precision=0] The precision to round down to. | |
| 17790 * @returns {number} Returns the rounded down number. | |
| 17791 * @example | |
| 17792 * | |
| 17793 * _.floor(4.006); | |
| 17794 * // => 4 | |
| 17795 * | |
| 17796 * _.floor(0.046, 2); | |
| 17797 * // => 0.04 | |
| 17798 * | |
| 17799 * _.floor(4060, -2); | |
| 17800 * // => 4000 | |
| 17801 */ | |
| 17802 var floor = createRound('floor'); | |
| 17803 | |
| 17804 /** | |
| 17805 * Computes the maximum value of `array`. If `array` is empty or falsey, | |
| 17806 * `undefined` is returned. | |
| 17807 * | |
| 17808 * @static | |
| 17809 * @since 0.1.0 | |
| 17810 * @memberOf _ | |
| 17811 * @category Math | |
| 17812 * @param {Array} array The array to iterate over. | |
| 17813 * @returns {*} Returns the maximum value. | |
| 17814 * @example | |
| 17815 * | |
| 17816 * _.max([4, 2, 8, 6]); | |
| 17817 * // => 8 | |
| 17818 * | |
| 17819 * _.max([]); | |
| 17820 * // => undefined | |
| 17821 */ | |
| 17822 function max(array) { | |
| 17823 return (array && array.length) | |
| 17824 ? baseExtremum(array, identity, baseGt) | |
| 17825 : undefined; | |
| 17826 } | |
| 17827 | |
| 17828 /** | |
| 17829 * This method is like `_.max` except that it accepts `iteratee` which is | |
| 17830 * invoked for each element in `array` to generate the criterion by which | |
| 17831 * the value is ranked. The iteratee is invoked with one argument: (value). | |
| 17832 * | |
| 17833 * @static | |
| 17834 * @memberOf _ | |
| 17835 * @since 4.0.0 | |
| 17836 * @category Math | |
| 17837 * @param {Array} array The array to iterate over. | |
| 17838 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 17839 * @returns {*} Returns the maximum value. | |
| 17840 * @example | |
| 17841 * | |
| 17842 * var objects = [{ 'n': 1 }, { 'n': 2 }]; | |
| 17843 * | |
| 17844 * _.maxBy(objects, function(o) { return o.n; }); | |
| 17845 * // => { 'n': 2 } | |
| 17846 * | |
| 17847 * // The `_.property` iteratee shorthand. | |
| 17848 * _.maxBy(objects, 'n'); | |
| 17849 * // => { 'n': 2 } | |
| 17850 */ | |
| 17851 function maxBy(array, iteratee) { | |
| 17852 return (array && array.length) | |
| 17853 ? baseExtremum(array, getIteratee(iteratee, 2), baseGt) | |
| 17854 : undefined; | |
| 17855 } | |
| 17856 | |
| 17857 /** | |
| 17858 * Computes the mean of the values in `array`. | |
| 17859 * | |
| 17860 * @static | |
| 17861 * @memberOf _ | |
| 17862 * @since 4.0.0 | |
| 17863 * @category Math | |
| 17864 * @param {Array} array The array to iterate over. | |
| 17865 * @returns {number} Returns the mean. | |
| 17866 * @example | |
| 17867 * | |
| 17868 * _.mean([4, 2, 8, 6]); | |
| 17869 * // => 5 | |
| 17870 */ | |
| 17871 function mean(array) { | |
| 17872 return baseMean(array, identity); | |
| 17873 } | |
| 17874 | |
| 17875 /** | |
| 17876 * This method is like `_.mean` except that it accepts `iteratee` which is | |
| 17877 * invoked for each element in `array` to generate the value to be averaged. | |
| 17878 * The iteratee is invoked with one argument: (value). | |
| 17879 * | |
| 17880 * @static | |
| 17881 * @memberOf _ | |
| 17882 * @since 4.7.0 | |
| 17883 * @category Math | |
| 17884 * @param {Array} array The array to iterate over. | |
| 17885 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 17886 * @returns {number} Returns the mean. | |
| 17887 * @example | |
| 17888 * | |
| 17889 * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]; | |
| 17890 * | |
| 17891 * _.meanBy(objects, function(o) { return o.n; }); | |
| 17892 * // => 5 | |
| 17893 * | |
| 17894 * // The `_.property` iteratee shorthand. | |
| 17895 * _.meanBy(objects, 'n'); | |
| 17896 * // => 5 | |
| 17897 */ | |
| 17898 function meanBy(array, iteratee) { | |
| 17899 return baseMean(array, getIteratee(iteratee, 2)); | |
| 17900 } | |
| 17901 | |
| 17902 /** | |
| 17903 * Computes the minimum value of `array`. If `array` is empty or falsey, | |
| 17904 * `undefined` is returned. | |
| 17905 * | |
| 17906 * @static | |
| 17907 * @since 0.1.0 | |
| 17908 * @memberOf _ | |
| 17909 * @category Math | |
| 17910 * @param {Array} array The array to iterate over. | |
| 17911 * @returns {*} Returns the minimum value. | |
| 17912 * @example | |
| 17913 * | |
| 17914 * _.min([4, 2, 8, 6]); | |
| 17915 * // => 2 | |
| 17916 * | |
| 17917 * _.min([]); | |
| 17918 * // => undefined | |
| 17919 */ | |
| 17920 function min(array) { | |
| 17921 return (array && array.length) | |
| 17922 ? baseExtremum(array, identity, baseLt) | |
| 17923 : undefined; | |
| 17924 } | |
| 17925 | |
| 17926 /** | |
| 17927 * This method is like `_.min` except that it accepts `iteratee` which is | |
| 17928 * invoked for each element in `array` to generate the criterion by which | |
| 17929 * the value is ranked. The iteratee is invoked with one argument: (value). | |
| 17930 * | |
| 17931 * @static | |
| 17932 * @memberOf _ | |
| 17933 * @since 4.0.0 | |
| 17934 * @category Math | |
| 17935 * @param {Array} array The array to iterate over. | |
| 17936 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 17937 * @returns {*} Returns the minimum value. | |
| 17938 * @example | |
| 17939 * | |
| 17940 * var objects = [{ 'n': 1 }, { 'n': 2 }]; | |
| 17941 * | |
| 17942 * _.minBy(objects, function(o) { return o.n; }); | |
| 17943 * // => { 'n': 1 } | |
| 17944 * | |
| 17945 * // The `_.property` iteratee shorthand. | |
| 17946 * _.minBy(objects, 'n'); | |
| 17947 * // => { 'n': 1 } | |
| 17948 */ | |
| 17949 function minBy(array, iteratee) { | |
| 17950 return (array && array.length) | |
| 17951 ? baseExtremum(array, getIteratee(iteratee, 2), baseLt) | |
| 17952 : undefined; | |
| 17953 } | |
| 17954 | |
| 17955 /** | |
| 17956 * Multiply two numbers. | |
| 17957 * | |
| 17958 * @static | |
| 17959 * @memberOf _ | |
| 17960 * @since 4.7.0 | |
| 17961 * @category Math | |
| 17962 * @param {number} multiplier The first number in a multiplication. | |
| 17963 * @param {number} multiplicand The second number in a multiplication. | |
| 17964 * @returns {number} Returns the product. | |
| 17965 * @example | |
| 17966 * | |
| 17967 * _.multiply(6, 4); | |
| 17968 * // => 24 | |
| 17969 */ | |
| 17970 var multiply = createMathOperation(function(multiplier, multiplicand) { | |
| 17971 return multiplier * multiplicand; | |
| 17972 }, 1); | |
| 17973 | |
| 17974 /** | |
| 17975 * Computes `number` rounded to `precision`. | |
| 17976 * | |
| 17977 * @static | |
| 17978 * @memberOf _ | |
| 17979 * @since 3.10.0 | |
| 17980 * @category Math | |
| 17981 * @param {number} number The number to round. | |
| 17982 * @param {number} [precision=0] The precision to round to. | |
| 17983 * @returns {number} Returns the rounded number. | |
| 17984 * @example | |
| 17985 * | |
| 17986 * _.round(4.006); | |
| 17987 * // => 4 | |
| 17988 * | |
| 17989 * _.round(4.006, 2); | |
| 17990 * // => 4.01 | |
| 17991 * | |
| 17992 * _.round(4060, -2); | |
| 17993 * // => 4100 | |
| 17994 */ | |
| 17995 var round = createRound('round'); | |
| 17996 | |
| 17997 /** | |
| 17998 * Subtract two numbers. | |
| 17999 * | |
| 18000 * @static | |
| 18001 * @memberOf _ | |
| 18002 * @since 4.0.0 | |
| 18003 * @category Math | |
| 18004 * @param {number} minuend The first number in a subtraction. | |
| 18005 * @param {number} subtrahend The second number in a subtraction. | |
| 18006 * @returns {number} Returns the difference. | |
| 18007 * @example | |
| 18008 * | |
| 18009 * _.subtract(6, 4); | |
| 18010 * // => 2 | |
| 18011 */ | |
| 18012 var subtract = createMathOperation(function(minuend, subtrahend) { | |
| 18013 return minuend - subtrahend; | |
| 18014 }, 0); | |
| 18015 | |
| 18016 /** | |
| 18017 * Computes the sum of the values in `array`. | |
| 18018 * | |
| 18019 * @static | |
| 18020 * @memberOf _ | |
| 18021 * @since 3.4.0 | |
| 18022 * @category Math | |
| 18023 * @param {Array} array The array to iterate over. | |
| 18024 * @returns {number} Returns the sum. | |
| 18025 * @example | |
| 18026 * | |
| 18027 * _.sum([4, 2, 8, 6]); | |
| 18028 * // => 20 | |
| 18029 */ | |
| 18030 function sum(array) { | |
| 18031 return (array && array.length) | |
| 18032 ? baseSum(array, identity) | |
| 18033 : 0; | |
| 18034 } | |
| 18035 | |
| 18036 /** | |
| 18037 * This method is like `_.sum` except that it accepts `iteratee` which is | |
| 18038 * invoked for each element in `array` to generate the value to be summed. | |
| 18039 * The iteratee is invoked with one argument: (value). | |
| 18040 * | |
| 18041 * @static | |
| 18042 * @memberOf _ | |
| 18043 * @since 4.0.0 | |
| 18044 * @category Math | |
| 18045 * @param {Array} array The array to iterate over. | |
| 18046 * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | |
| 18047 * @returns {number} Returns the sum. | |
| 18048 * @example | |
| 18049 * | |
| 18050 * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]; | |
| 18051 * | |
| 18052 * _.sumBy(objects, function(o) { return o.n; }); | |
| 18053 * // => 20 | |
| 18054 * | |
| 18055 * // The `_.property` iteratee shorthand. | |
| 18056 * _.sumBy(objects, 'n'); | |
| 18057 * // => 20 | |
| 18058 */ | |
| 18059 function sumBy(array, iteratee) { | |
| 18060 return (array && array.length) | |
| 18061 ? baseSum(array, getIteratee(iteratee, 2)) | |
| 18062 : 0; | |
| 18063 } | |
| 18064 | |
| 18065 /*------------------------------------------------------------------------*/ | |
| 18066 | |
| 18067 // Add methods that return wrapped values in chain sequences. | |
| 18068 lodash.after = after; | |
| 18069 lodash.ary = ary; | |
| 18070 lodash.assign = assign; | |
| 18071 lodash.assignIn = assignIn; | |
| 18072 lodash.assignInWith = assignInWith; | |
| 18073 lodash.assignWith = assignWith; | |
| 18074 lodash.at = at; | |
| 18075 lodash.before = before; | |
| 18076 lodash.bind = bind; | |
| 18077 lodash.bindAll = bindAll; | |
| 18078 lodash.bindKey = bindKey; | |
| 18079 lodash.castArray = castArray; | |
| 18080 lodash.chain = chain; | |
| 18081 lodash.chunk = chunk; | |
| 18082 lodash.compact = compact; | |
| 18083 lodash.concat = concat; | |
| 18084 lodash.cond = cond; | |
| 18085 lodash.conforms = conforms; | |
| 18086 lodash.constant = constant; | |
| 18087 lodash.countBy = countBy; | |
| 18088 lodash.create = create; | |
| 18089 lodash.curry = curry; | |
| 18090 lodash.curryRight = curryRight; | |
| 18091 lodash.debounce = debounce; | |
| 18092 lodash.defaults = defaults; | |
| 18093 lodash.defaultsDeep = defaultsDeep; | |
| 18094 lodash.defer = defer; | |
| 18095 lodash.delay = delay; | |
| 18096 lodash.difference = difference; | |
| 18097 lodash.differenceBy = differenceBy; | |
| 18098 lodash.differenceWith = differenceWith; | |
| 18099 lodash.drop = drop; | |
| 18100 lodash.dropRight = dropRight; | |
| 18101 lodash.dropRightWhile = dropRightWhile; | |
| 18102 lodash.dropWhile = dropWhile; | |
| 18103 lodash.fill = fill; | |
| 18104 lodash.filter = filter; | |
| 18105 lodash.flatMap = flatMap; | |
| 18106 lodash.flatMapDeep = flatMapDeep; | |
| 18107 lodash.flatMapDepth = flatMapDepth; | |
| 18108 lodash.flatten = flatten; | |
| 18109 lodash.flattenDeep = flattenDeep; | |
| 18110 lodash.flattenDepth = flattenDepth; | |
| 18111 lodash.flip = flip; | |
| 18112 lodash.flow = flow; | |
| 18113 lodash.flowRight = flowRight; | |
| 18114 lodash.fromPairs = fromPairs; | |
| 18115 lodash.functions = functions; | |
| 18116 lodash.functionsIn = functionsIn; | |
| 18117 lodash.groupBy = groupBy; | |
| 18118 lodash.initial = initial; | |
| 18119 lodash.intersection = intersection; | |
| 18120 lodash.intersectionBy = intersectionBy; | |
| 18121 lodash.intersectionWith = intersectionWith; | |
| 18122 lodash.invert = invert; | |
| 18123 lodash.invertBy = invertBy; | |
| 18124 lodash.invokeMap = invokeMap; | |
| 18125 lodash.iteratee = iteratee; | |
| 18126 lodash.keyBy = keyBy; | |
| 18127 lodash.keys = keys; | |
| 18128 lodash.keysIn = keysIn; | |
| 18129 lodash.map = map; | |
| 18130 lodash.mapKeys = mapKeys; | |
| 18131 lodash.mapValues = mapValues; | |
| 18132 lodash.matches = matches; | |
| 18133 lodash.matchesProperty = matchesProperty; | |
| 18134 lodash.memoize = memoize; | |
| 18135 lodash.merge = merge; | |
| 18136 lodash.mergeWith = mergeWith; | |
| 18137 lodash.method = method; | |
| 18138 lodash.methodOf = methodOf; | |
| 18139 lodash.mixin = mixin; | |
| 18140 lodash.negate = negate; | |
| 18141 lodash.nthArg = nthArg; | |
| 18142 lodash.omit = omit; | |
| 18143 lodash.omitBy = omitBy; | |
| 18144 lodash.once = once; | |
| 18145 lodash.orderBy = orderBy; | |
| 18146 lodash.over = over; | |
| 18147 lodash.overArgs = overArgs; | |
| 18148 lodash.overEvery = overEvery; | |
| 18149 lodash.overSome = overSome; | |
| 18150 lodash.partial = partial; | |
| 18151 lodash.partialRight = partialRight; | |
| 18152 lodash.partition = partition; | |
| 18153 lodash.pick = pick; | |
| 18154 lodash.pickBy = pickBy; | |
| 18155 lodash.property = property; | |
| 18156 lodash.propertyOf = propertyOf; | |
| 18157 lodash.pull = pull; | |
| 18158 lodash.pullAll = pullAll; | |
| 18159 lodash.pullAllBy = pullAllBy; | |
| 18160 lodash.pullAllWith = pullAllWith; | |
| 18161 lodash.pullAt = pullAt; | |
| 18162 lodash.range = range; | |
| 18163 lodash.rangeRight = rangeRight; | |
| 18164 lodash.rearg = rearg; | |
| 18165 lodash.reject = reject; | |
| 18166 lodash.remove = remove; | |
| 18167 lodash.rest = rest; | |
| 18168 lodash.reverse = reverse; | |
| 18169 lodash.sampleSize = sampleSize; | |
| 18170 lodash.set = set; | |
| 18171 lodash.setWith = setWith; | |
| 18172 lodash.shuffle = shuffle; | |
| 18173 lodash.slice = slice; | |
| 18174 lodash.sortBy = sortBy; | |
| 18175 lodash.sortedUniq = sortedUniq; | |
| 18176 lodash.sortedUniqBy = sortedUniqBy; | |
| 18177 lodash.split = split; | |
| 18178 lodash.spread = spread; | |
| 18179 lodash.tail = tail; | |
| 18180 lodash.take = take; | |
| 18181 lodash.takeRight = takeRight; | |
| 18182 lodash.takeRightWhile = takeRightWhile; | |
| 18183 lodash.takeWhile = takeWhile; | |
| 18184 lodash.tap = tap; | |
| 18185 lodash.throttle = throttle; | |
| 18186 lodash.thru = thru; | |
| 18187 lodash.toArray = toArray; | |
| 18188 lodash.toPairs = toPairs; | |
| 18189 lodash.toPairsIn = toPairsIn; | |
| 18190 lodash.toPath = toPath; | |
| 18191 lodash.toPlainObject = toPlainObject; | |
| 18192 lodash.transform = transform; | |
| 18193 lodash.unary = unary; | |
| 18194 lodash.union = union; | |
| 18195 lodash.unionBy = unionBy; | |
| 18196 lodash.unionWith = unionWith; | |
| 18197 lodash.uniq = uniq; | |
| 18198 lodash.uniqBy = uniqBy; | |
| 18199 lodash.uniqWith = uniqWith; | |
| 18200 lodash.unset = unset; | |
| 18201 lodash.unzip = unzip; | |
| 18202 lodash.unzipWith = unzipWith; | |
| 18203 lodash.update = update; | |
| 18204 lodash.updateWith = updateWith; | |
| 18205 lodash.values = values; | |
| 18206 lodash.valuesIn = valuesIn; | |
| 18207 lodash.without = without; | |
| 18208 lodash.words = words; | |
| 18209 lodash.wrap = wrap; | |
| 18210 lodash.xor = xor; | |
| 18211 lodash.xorBy = xorBy; | |
| 18212 lodash.xorWith = xorWith; | |
| 18213 lodash.zip = zip; | |
| 18214 lodash.zipObject = zipObject; | |
| 18215 lodash.zipObjectDeep = zipObjectDeep; | |
| 18216 lodash.zipWith = zipWith; | |
| 18217 | |
| 18218 // Add aliases. | |
| 18219 lodash.entries = toPairs; | |
| 18220 lodash.entriesIn = toPairsIn; | |
| 18221 lodash.extend = assignIn; | |
| 18222 lodash.extendWith = assignInWith; | |
| 18223 | |
| 18224 // Add methods to `lodash.prototype`. | |
| 18225 mixin(lodash, lodash); | |
| 18226 | |
| 18227 /*------------------------------------------------------------------------*/ | |
| 18228 | |
| 18229 // Add methods that return unwrapped values in chain sequences. | |
| 18230 lodash.add = add; | |
| 18231 lodash.attempt = attempt; | |
| 18232 lodash.camelCase = camelCase; | |
| 18233 lodash.capitalize = capitalize; | |
| 18234 lodash.ceil = ceil; | |
| 18235 lodash.clamp = clamp; | |
| 18236 lodash.clone = clone; | |
| 18237 lodash.cloneDeep = cloneDeep; | |
| 18238 lodash.cloneDeepWith = cloneDeepWith; | |
| 18239 lodash.cloneWith = cloneWith; | |
| 18240 lodash.conformsTo = conformsTo; | |
| 18241 lodash.deburr = deburr; | |
| 18242 lodash.defaultTo = defaultTo; | |
| 18243 lodash.divide = divide; | |
| 18244 lodash.endsWith = endsWith; | |
| 18245 lodash.eq = eq; | |
| 18246 lodash.escape = escape; | |
| 18247 lodash.escapeRegExp = escapeRegExp; | |
| 18248 lodash.every = every; | |
| 18249 lodash.find = find; | |
| 18250 lodash.findIndex = findIndex; | |
| 18251 lodash.findKey = findKey; | |
| 18252 lodash.findLast = findLast; | |
| 18253 lodash.findLastIndex = findLastIndex; | |
| 18254 lodash.findLastKey = findLastKey; | |
| 18255 lodash.floor = floor; | |
| 18256 lodash.forEach = forEach; | |
| 18257 lodash.forEachRight = forEachRight; | |
| 18258 lodash.forIn = forIn; | |
| 18259 lodash.forInRight = forInRight; | |
| 18260 lodash.forOwn = forOwn; | |
| 18261 lodash.forOwnRight = forOwnRight; | |
| 18262 lodash.get = get; | |
| 18263 lodash.gt = gt; | |
| 18264 lodash.gte = gte; | |
| 18265 lodash.has = has; | |
| 18266 lodash.hasIn = hasIn; | |
| 18267 lodash.head = head; | |
| 18268 lodash.identity = identity; | |
| 18269 lodash.includes = includes; | |
| 18270 lodash.indexOf = indexOf; | |
| 18271 lodash.inRange = inRange; | |
| 18272 lodash.invoke = invoke; | |
| 18273 lodash.isArguments = isArguments; | |
| 18274 lodash.isArray = isArray; | |
| 18275 lodash.isArrayBuffer = isArrayBuffer; | |
| 18276 lodash.isArrayLike = isArrayLike; | |
| 18277 lodash.isArrayLikeObject = isArrayLikeObject; | |
| 18278 lodash.isBoolean = isBoolean; | |
| 18279 lodash.isBuffer = isBuffer; | |
| 18280 lodash.isDate = isDate; | |
| 18281 lodash.isElement = isElement; | |
| 18282 lodash.isEmpty = isEmpty; | |
| 18283 lodash.isEqual = isEqual; | |
| 18284 lodash.isEqualWith = isEqualWith; | |
| 18285 lodash.isError = isError; | |
| 18286 lodash.isFinite = isFinite; | |
| 18287 lodash.isFunction = isFunction; | |
| 18288 lodash.isInteger = isInteger; | |
| 18289 lodash.isLength = isLength; | |
| 18290 lodash.isMap = isMap; | |
| 18291 lodash.isMatch = isMatch; | |
| 18292 lodash.isMatchWith = isMatchWith; | |
| 18293 lodash.isNaN = isNaN; | |
| 18294 lodash.isNative = isNative; | |
| 18295 lodash.isNil = isNil; | |
| 18296 lodash.isNull = isNull; | |
| 18297 lodash.isNumber = isNumber; | |
| 18298 lodash.isObject = isObject; | |
| 18299 lodash.isObjectLike = isObjectLike; | |
| 18300 lodash.isPlainObject = isPlainObject; | |
| 18301 lodash.isRegExp = isRegExp; | |
| 18302 lodash.isSafeInteger = isSafeInteger; | |
| 18303 lodash.isSet = isSet; | |
| 18304 lodash.isString = isString; | |
| 18305 lodash.isSymbol = isSymbol; | |
| 18306 lodash.isTypedArray = isTypedArray; | |
| 18307 lodash.isUndefined = isUndefined; | |
| 18308 lodash.isWeakMap = isWeakMap; | |
| 18309 lodash.isWeakSet = isWeakSet; | |
| 18310 lodash.join = join; | |
| 18311 lodash.kebabCase = kebabCase; | |
| 18312 lodash.last = last; | |
| 18313 lodash.lastIndexOf = lastIndexOf; | |
| 18314 lodash.lowerCase = lowerCase; | |
| 18315 lodash.lowerFirst = lowerFirst; | |
| 18316 lodash.lt = lt; | |
| 18317 lodash.lte = lte; | |
| 18318 lodash.max = max; | |
| 18319 lodash.maxBy = maxBy; | |
| 18320 lodash.mean = mean; | |
| 18321 lodash.meanBy = meanBy; | |
| 18322 lodash.min = min; | |
| 18323 lodash.minBy = minBy; | |
| 18324 lodash.stubArray = stubArray; | |
| 18325 lodash.stubFalse = stubFalse; | |
| 18326 lodash.stubObject = stubObject; | |
| 18327 lodash.stubString = stubString; | |
| 18328 lodash.stubTrue = stubTrue; | |
| 18329 lodash.multiply = multiply; | |
| 18330 lodash.nth = nth; | |
| 18331 lodash.noConflict = noConflict; | |
| 18332 lodash.noop = noop; | |
| 18333 lodash.now = now; | |
| 18334 lodash.pad = pad; | |
| 18335 lodash.padEnd = padEnd; | |
| 18336 lodash.padStart = padStart; | |
| 18337 lodash.parseInt = parseInt; | |
| 18338 lodash.random = random; | |
| 18339 lodash.reduce = reduce; | |
| 18340 lodash.reduceRight = reduceRight; | |
| 18341 lodash.repeat = repeat; | |
| 18342 lodash.replace = replace; | |
| 18343 lodash.result = result; | |
| 18344 lodash.round = round; | |
| 18345 lodash.runInContext = runInContext; | |
| 18346 lodash.sample = sample; | |
| 18347 lodash.size = size; | |
| 18348 lodash.snakeCase = snakeCase; | |
| 18349 lodash.some = some; | |
| 18350 lodash.sortedIndex = sortedIndex; | |
| 18351 lodash.sortedIndexBy = sortedIndexBy; | |
| 18352 lodash.sortedIndexOf = sortedIndexOf; | |
| 18353 lodash.sortedLastIndex = sortedLastIndex; | |
| 18354 lodash.sortedLastIndexBy = sortedLastIndexBy; | |
| 18355 lodash.sortedLastIndexOf = sortedLastIndexOf; | |
| 18356 lodash.startCase = startCase; | |
| 18357 lodash.startsWith = startsWith; | |
| 18358 lodash.subtract = subtract; | |
| 18359 lodash.sum = sum; | |
| 18360 lodash.sumBy = sumBy; | |
| 18361 lodash.template = template; | |
| 18362 lodash.times = times; | |
| 18363 lodash.toFinite = toFinite; | |
| 18364 lodash.toInteger = toInteger; | |
| 18365 lodash.toLength = toLength; | |
| 18366 lodash.toLower = toLower; | |
| 18367 lodash.toNumber = toNumber; | |
| 18368 lodash.toSafeInteger = toSafeInteger; | |
| 18369 lodash.toString = toString; | |
| 18370 lodash.toUpper = toUpper; | |
| 18371 lodash.trim = trim; | |
| 18372 lodash.trimEnd = trimEnd; | |
| 18373 lodash.trimStart = trimStart; | |
| 18374 lodash.truncate = truncate; | |
| 18375 lodash.unescape = unescape; | |
| 18376 lodash.uniqueId = uniqueId; | |
| 18377 lodash.upperCase = upperCase; | |
| 18378 lodash.upperFirst = upperFirst; | |
| 18379 | |
| 18380 // Add aliases. | |
| 18381 lodash.each = forEach; | |
| 18382 lodash.eachRight = forEachRight; | |
| 18383 lodash.first = head; | |
| 18384 | |
| 18385 mixin(lodash, (function() { | |
| 18386 var source = {}; | |
| 18387 baseForOwn(lodash, function(func, methodName) { | |
| 18388 if (!hasOwnProperty.call(lodash.prototype, methodName)) { | |
| 18389 source[methodName] = func; | |
| 18390 } | |
| 18391 }); | |
| 18392 return source; | |
| 18393 }()), { 'chain': false }); | |
| 18394 | |
| 18395 /*------------------------------------------------------------------------*/ | |
| 18396 | |
| 18397 /** | |
| 18398 * The semantic version number. | |
| 18399 * | |
| 18400 * @static | |
| 18401 * @memberOf _ | |
| 18402 * @type {string} | |
| 18403 */ | |
| 18404 lodash.VERSION = VERSION; | |
| 18405 | |
| 18406 // Assign default placeholders. | |
| 18407 arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) { | |
| 18408 lodash[methodName].placeholder = lodash; | |
| 18409 }); | |
| 18410 | |
| 18411 // Add `LazyWrapper` methods for `_.drop` and `_.take` variants. | |
| 18412 arrayEach(['drop', 'take'], function(methodName, index) { | |
| 18413 LazyWrapper.prototype[methodName] = function(n) { | |
| 18414 n = n === undefined ? 1 : nativeMax(toInteger(n), 0); | |
| 18415 | |
| 18416 var result = (this.__filtered__ && !index) | |
| 18417 ? new LazyWrapper(this) | |
| 18418 : this.clone(); | |
| 18419 | |
| 18420 if (result.__filtered__) { | |
| 18421 result.__takeCount__ = nativeMin(n, result.__takeCount__); | |
| 18422 } else { | |
| 18423 result.__views__.push({ | |
| 18424 'size': nativeMin(n, MAX_ARRAY_LENGTH), | |
| 18425 'type': methodName + (result.__dir__ < 0 ? 'Right' : '') | |
| 18426 }); | |
| 18427 } | |
| 18428 return result; | |
| 18429 }; | |
| 18430 | |
| 18431 LazyWrapper.prototype[methodName + 'Right'] = function(n) { | |
| 18432 return this.reverse()[methodName](n).reverse(); | |
| 18433 }; | |
| 18434 }); | |
| 18435 | |
| 18436 // Add `LazyWrapper` methods that accept an `iteratee` value. | |
| 18437 arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) { | |
| 18438 var type = index + 1, | |
| 18439 isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG; | |
| 18440 | |
| 18441 LazyWrapper.prototype[methodName] = function(iteratee) { | |
| 18442 var result = this.clone(); | |
| 18443 result.__iteratees__.push({ | |
| 18444 'iteratee': getIteratee(iteratee, 3), | |
| 18445 'type': type | |
| 18446 }); | |
| 18447 result.__filtered__ = result.__filtered__ || isFilter; | |
| 18448 return result; | |
| 18449 }; | |
| 18450 }); | |
| 18451 | |
| 18452 // Add `LazyWrapper` methods for `_.head` and `_.last`. | |
| 18453 arrayEach(['head', 'last'], function(methodName, index) { | |
| 18454 var takeName = 'take' + (index ? 'Right' : ''); | |
| 18455 | |
| 18456 LazyWrapper.prototype[methodName] = function() { | |
| 18457 return this[takeName](1).value()[0]; | |
| 18458 }; | |
| 18459 }); | |
| 18460 | |
| 18461 // Add `LazyWrapper` methods for `_.initial` and `_.tail`. | |
| 18462 arrayEach(['initial', 'tail'], function(methodName, index) { | |
| 18463 var dropName = 'drop' + (index ? '' : 'Right'); | |
| 18464 | |
| 18465 LazyWrapper.prototype[methodName] = function() { | |
| 18466 return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1); | |
| 18467 }; | |
| 18468 }); | |
| 18469 | |
| 18470 LazyWrapper.prototype.compact = function() { | |
| 18471 return this.filter(identity); | |
| 18472 }; | |
| 18473 | |
| 18474 LazyWrapper.prototype.find = function(predicate) { | |
| 18475 return this.filter(predicate).head(); | |
| 18476 }; | |
| 18477 | |
| 18478 LazyWrapper.prototype.findLast = function(predicate) { | |
| 18479 return this.reverse().find(predicate); | |
| 18480 }; | |
| 18481 | |
| 18482 LazyWrapper.prototype.invokeMap = baseRest(function(path, args) { | |
| 18483 if (typeof path == 'function') { | |
| 18484 return new LazyWrapper(this); | |
| 18485 } | |
| 18486 return this.map(function(value) { | |
| 18487 return baseInvoke(value, path, args); | |
| 18488 }); | |
| 18489 }); | |
| 18490 | |
| 18491 LazyWrapper.prototype.reject = function(predicate) { | |
| 18492 return this.filter(negate(getIteratee(predicate))); | |
| 18493 }; | |
| 18494 | |
| 18495 LazyWrapper.prototype.slice = function(start, end) { | |
| 18496 start = toInteger(start); | |
| 18497 | |
| 18498 var result = this; | |
| 18499 if (result.__filtered__ && (start > 0 || end < 0)) { | |
| 18500 return new LazyWrapper(result); | |
| 18501 } | |
| 18502 if (start < 0) { | |
| 18503 result = result.takeRight(-start); | |
| 18504 } else if (start) { | |
| 18505 result = result.drop(start); | |
| 18506 } | |
| 18507 if (end !== undefined) { | |
| 18508 end = toInteger(end); | |
| 18509 result = end < 0 ? result.dropRight(-end) : result.take(end - start); | |
| 18510 } | |
| 18511 return result; | |
| 18512 }; | |
| 18513 | |
| 18514 LazyWrapper.prototype.takeRightWhile = function(predicate) { | |
| 18515 return this.reverse().takeWhile(predicate).reverse(); | |
| 18516 }; | |
| 18517 | |
| 18518 LazyWrapper.prototype.toArray = function() { | |
| 18519 return this.take(MAX_ARRAY_LENGTH); | |
| 18520 }; | |
| 18521 | |
| 18522 // Add `LazyWrapper` methods to `lodash.prototype`. | |
| 18523 baseForOwn(LazyWrapper.prototype, function(func, methodName) { | |
| 18524 var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName), | |
| 18525 isTaker = /^(?:head|last)$/.test(methodName), | |
| 18526 lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName], | |
| 18527 retUnwrapped = isTaker || /^find/.test(methodName); | |
| 18528 | |
| 18529 if (!lodashFunc) { | |
| 18530 return; | |
| 18531 } | |
| 18532 lodash.prototype[methodName] = function() { | |
| 18533 var value = this.__wrapped__, | |
| 18534 args = isTaker ? [1] : arguments, | |
| 18535 isLazy = value instanceof LazyWrapper, | |
| 18536 iteratee = args[0], | |
| 18537 useLazy = isLazy || isArray(value); | |
| 18538 | |
| 18539 var interceptor = function(value) { | |
| 18540 var result = lodashFunc.apply(lodash, arrayPush([value], args)); | |
| 18541 return (isTaker && chainAll) ? result[0] : result; | |
| 18542 }; | |
| 18543 | |
| 18544 if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) { | |
| 18545 // Avoid lazy use if the iteratee has a "length" value other than `1`. | |
| 18546 isLazy = useLazy = false; | |
| 18547 } | |
| 18548 var chainAll = this.__chain__, | |
| 18549 isHybrid = !!this.__actions__.length, | |
| 18550 isUnwrapped = retUnwrapped && !chainAll, | |
| 18551 onlyLazy = isLazy && !isHybrid; | |
| 18552 | |
| 18553 if (!retUnwrapped && useLazy) { | |
| 18554 value = onlyLazy ? value : new LazyWrapper(this); | |
| 18555 var result = func.apply(value, args); | |
| 18556 result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined }); | |
| 18557 return new LodashWrapper(result, chainAll); | |
| 18558 } | |
| 18559 if (isUnwrapped && onlyLazy) { | |
| 18560 return func.apply(this, args); | |
| 18561 } | |
| 18562 result = this.thru(interceptor); | |
| 18563 return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result; | |
| 18564 }; | |
| 18565 }); | |
| 18566 | |
| 18567 // Add `Array` methods to `lodash.prototype`. | |
| 18568 arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) { | |
| 18569 var func = arrayProto[methodName], | |
| 18570 chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru', | |
| 18571 retUnwrapped = /^(?:pop|shift)$/.test(methodName); | |
| 18572 | |
| 18573 lodash.prototype[methodName] = function() { | |
| 18574 var args = arguments; | |
| 18575 if (retUnwrapped && !this.__chain__) { | |
| 18576 var value = this.value(); | |
| 18577 return func.apply(isArray(value) ? value : [], args); | |
| 18578 } | |
| 18579 return this[chainName](function(value) { | |
| 18580 return func.apply(isArray(value) ? value : [], args); | |
| 18581 }); | |
| 18582 }; | |
| 18583 }); | |
| 18584 | |
| 18585 // Map minified method names to their real names. | |
| 18586 baseForOwn(LazyWrapper.prototype, function(func, methodName) { | |
| 18587 var lodashFunc = lodash[methodName]; | |
| 18588 if (lodashFunc) { | |
| 18589 var key = lodashFunc.name + ''; | |
| 18590 if (!hasOwnProperty.call(realNames, key)) { | |
| 18591 realNames[key] = []; | |
| 18592 } | |
| 18593 realNames[key].push({ 'name': methodName, 'func': lodashFunc }); | |
| 18594 } | |
| 18595 }); | |
| 18596 | |
| 18597 realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{ | |
| 18598 'name': 'wrapper', | |
| 18599 'func': undefined | |
| 18600 }]; | |
| 18601 | |
| 18602 // Add methods to `LazyWrapper`. | |
| 18603 LazyWrapper.prototype.clone = lazyClone; | |
| 18604 LazyWrapper.prototype.reverse = lazyReverse; | |
| 18605 LazyWrapper.prototype.value = lazyValue; | |
| 18606 | |
| 18607 // Add chain sequence methods to the `lodash` wrapper. | |
| 18608 lodash.prototype.at = wrapperAt; | |
| 18609 lodash.prototype.chain = wrapperChain; | |
| 18610 lodash.prototype.commit = wrapperCommit; | |
| 18611 lodash.prototype.next = wrapperNext; | |
| 18612 lodash.prototype.plant = wrapperPlant; | |
| 18613 lodash.prototype.reverse = wrapperReverse; | |
| 18614 lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue; | |
| 18615 | |
| 18616 // Add lazy aliases. | |
| 18617 lodash.prototype.first = lodash.prototype.head; | |
| 18618 | |
| 18619 if (symIterator) { | |
| 18620 lodash.prototype[symIterator] = wrapperToIterator; | |
| 18621 } | |
| 18622 return lodash; | |
| 18623 }); | |
| 18624 | |
| 18625 /*--------------------------------------------------------------------------*/ | |
| 18626 | |
| 18627 // Export lodash. | |
| 18628 var _ = runInContext(); | |
| 18629 | |
| 18630 // Some AMD build optimizers, like r.js, check for condition patterns like: | |
| 18631 if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) { | |
| 18632 // Expose Lodash on the global object to prevent errors when Lodash is | |
| 18633 // loaded by a script tag in the presence of an AMD loader. | |
| 18634 // See http://requirejs.org/docs/errors.html#mismatch for more details. | |
| 18635 // Use `_.noConflict` to remove Lodash from the global object. | |
| 18636 root._ = _; | |
| 18637 | |
| 18638 // Define as an anonymous module so, through path mapping, it can be | |
| 18639 // referenced as the "underscore" module. | |
| 18640 define(function() { | |
| 18641 return _; | |
| 18642 }); | |
| 18643 } | |
| 18644 // Check for `exports` after `define` in case a build optimizer adds it. | |
| 18645 else if (freeModule) { | |
| 18646 // Export for Node.js. | |
| 18647 (freeModule.exports = _)._ = _; | |
| 18648 // Export for CommonJS support. | |
| 18649 freeExports._ = _; | |
| 18650 } | |
| 18651 else { | |
| 18652 // Export to the global object. | |
| 18653 root._ = _; | |
| 18654 } | |
| 18655 }.call(this)); | |
| 18656 | |
| 18657 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
| 18658 },{}],17:[function(require,module,exports){ | |
| 18659 /* | |
| 18660 * Lexical analysis and token construction. | |
| 18661 */ | |
| 18662 | |
| 18663 "use strict"; | |
| 18664 | |
| 18665 var _ = require("lodash"); | |
| 18666 var events = require("events"); | |
| 18667 var reg = require("./reg.js"); | |
| 18668 var state = require("./state.js").state; | |
| 18669 | |
| 18670 var unicodeData = require("../data/ascii-identifier-data.js"); | |
| 18671 var asciiIdentifierStartTable = unicodeData.asciiIdentifierStartTable; | |
| 18672 var asciiIdentifierPartTable = unicodeData.asciiIdentifierPartTable; | |
| 18673 var nonAsciiIdentifierStartTable = require("../data/non-ascii-identifier-start.js"); | |
| 18674 var nonAsciiIdentifierPartTable = require("../data/non-ascii-identifier-part-only.js"); | |
| 18675 // Loading of this module is deferred as an optimization for ES2015 input | |
| 18676 var es5IdentifierNames; | |
| 18677 | |
| 18678 // Some of these token types are from JavaScript Parser API | |
| 18679 // while others are specific to JSHint parser. | |
| 18680 // JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API | |
| 18681 | |
| 18682 var Token = { | |
| 18683 Identifier: 1, | |
| 18684 Punctuator: 2, | |
| 18685 NumericLiteral: 3, | |
| 18686 StringLiteral: 4, | |
| 18687 Comment: 5, | |
| 18688 Keyword: 6, | |
| 18689 RegExp: 9, | |
| 18690 TemplateHead: 10, | |
| 18691 TemplateMiddle: 11, | |
| 18692 TemplateTail: 12, | |
| 18693 NoSubstTemplate: 13 | |
| 18694 }; | |
| 18695 | |
| 18696 var Context = { | |
| 18697 Block: 1, | |
| 18698 Template: 2 | |
| 18699 }; | |
| 18700 | |
| 18701 function isHex(str) { | |
| 18702 return /^[0-9a-fA-F]+$/.test(str); | |
| 18703 } | |
| 18704 | |
| 18705 function isHexDigit(str) { | |
| 18706 return str.length === 1 && isHex(str); | |
| 18707 } | |
| 18708 | |
| 18709 // Object that handles postponed lexing verifications that checks the parsed | |
| 18710 // environment state. | |
| 18711 | |
| 18712 function asyncTrigger() { | |
| 18713 var _checks = []; | |
| 18714 | |
| 18715 return { | |
| 18716 push: function(fn) { | |
| 18717 _checks.push(fn); | |
| 18718 }, | |
| 18719 | |
| 18720 check: function() { | |
| 18721 for (var check = 0; check < _checks.length; ++check) { | |
| 18722 _checks[check](); | |
| 18723 } | |
| 18724 | |
| 18725 _checks.splice(0, _checks.length); | |
| 18726 } | |
| 18727 }; | |
| 18728 } | |
| 18729 | |
| 18730 /* | |
| 18731 * Lexer for JSHint. | |
| 18732 * | |
| 18733 * This object does a char-by-char scan of the provided source code | |
| 18734 * and produces a sequence of tokens. | |
| 18735 * | |
| 18736 * var lex = new Lexer("var i = 0;"); | |
| 18737 * lex.start(); | |
| 18738 * lex.token(); // returns the next token | |
| 18739 * | |
| 18740 * You have to use the token() method to move the lexer forward | |
| 18741 * but you don't have to use its return value to get tokens. In addition | |
| 18742 * to token() method returning the next token, the Lexer object also | |
| 18743 * emits events. | |
| 18744 * | |
| 18745 * lex.on("Identifier", function(data) { | |
| 18746 * if (data.name.indexOf("_") >= 0) { | |
| 18747 * // Produce a warning. | |
| 18748 * } | |
| 18749 * }); | |
| 18750 * | |
| 18751 * Note that the token() method returns tokens in a JSLint-compatible | |
| 18752 * format while the event emitter uses a slightly modified version of | |
| 18753 * Mozilla's JavaScript Parser API. Eventually, we will move away from | |
| 18754 * JSLint format. | |
| 18755 */ | |
| 18756 function Lexer(source) { | |
| 18757 var lines = source; | |
| 18758 | |
| 18759 if (typeof lines === "string") { | |
| 18760 lines = lines | |
| 18761 .replace(/\r\n/g, "\n") | |
| 18762 .replace(/\r/g, "\n") | |
| 18763 .split("\n"); | |
| 18764 } | |
| 18765 | |
| 18766 // If the first line is a shebang (#!), make it a blank and move on. | |
| 18767 // Shebangs are used by Node scripts. | |
| 18768 | |
| 18769 if (lines[0] && lines[0].substr(0, 2) === "#!") { | |
| 18770 if (lines[0].indexOf("node") !== -1) { | |
| 18771 state.option.node = true; | |
| 18772 } | |
| 18773 lines[0] = ""; | |
| 18774 } | |
| 18775 | |
| 18776 this.emitter = new events.EventEmitter(); | |
| 18777 this.source = source; | |
| 18778 this.setLines(lines); | |
| 18779 this.prereg = true; | |
| 18780 | |
| 18781 this.line = 0; | |
| 18782 this.char = 1; | |
| 18783 this.from = 1; | |
| 18784 this.input = ""; | |
| 18785 this.inComment = false; | |
| 18786 this.context = []; | |
| 18787 this.templateStarts = []; | |
| 18788 | |
| 18789 for (var i = 0; i < state.option.indent; i += 1) { | |
| 18790 state.tab += " "; | |
| 18791 } | |
| 18792 } | |
| 18793 | |
| 18794 Lexer.prototype = { | |
| 18795 _lines: [], | |
| 18796 | |
| 18797 inContext: function(ctxType) { | |
| 18798 return this.context.length > 0 && this.context[this.context.length - 1].type === ctxType; | |
| 18799 }, | |
| 18800 | |
| 18801 pushContext: function(ctxType) { | |
| 18802 this.context.push({ type: ctxType }); | |
| 18803 }, | |
| 18804 | |
| 18805 popContext: function() { | |
| 18806 return this.context.pop(); | |
| 18807 }, | |
| 18808 | |
| 18809 currentContext: function() { | |
| 18810 return this.context.length > 0 && this.context[this.context.length - 1]; | |
| 18811 }, | |
| 18812 | |
| 18813 getLines: function() { | |
| 18814 this._lines = state.lines; | |
| 18815 return this._lines; | |
| 18816 }, | |
| 18817 | |
| 18818 setLines: function(val) { | |
| 18819 this._lines = val; | |
| 18820 state.lines = this._lines; | |
| 18821 }, | |
| 18822 | |
| 18823 /* | |
| 18824 * Return the next i character without actually moving the | |
| 18825 * char pointer. | |
| 18826 */ | |
| 18827 peek: function(i) { | |
| 18828 return this.input.charAt(i || 0); | |
| 18829 }, | |
| 18830 | |
| 18831 /* | |
| 18832 * Move the char pointer forward i times. | |
| 18833 */ | |
| 18834 skip: function(i) { | |
| 18835 i = i || 1; | |
| 18836 this.char += i; | |
| 18837 this.input = this.input.slice(i); | |
| 18838 }, | |
| 18839 | |
| 18840 /* | |
| 18841 * Subscribe to a token event. The API for this method is similar | |
| 18842 * Underscore.js i.e. you can subscribe to multiple events with | |
| 18843 * one call: | |
| 18844 * | |
| 18845 * lex.on("Identifier Number", function(data) { | |
| 18846 * // ... | |
| 18847 * }); | |
| 18848 */ | |
| 18849 on: function(names, listener) { | |
| 18850 names.split(" ").forEach(function(name) { | |
| 18851 this.emitter.on(name, listener); | |
| 18852 }.bind(this)); | |
| 18853 }, | |
| 18854 | |
| 18855 /* | |
| 18856 * Trigger a token event. All arguments will be passed to each | |
| 18857 * listener. | |
| 18858 */ | |
| 18859 trigger: function() { | |
| 18860 this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments)); | |
| 18861 }, | |
| 18862 | |
| 18863 /* | |
| 18864 * Postpone a token event. the checking condition is set as | |
| 18865 * last parameter, and the trigger function is called in a | |
| 18866 * stored callback. To be later called using the check() function | |
| 18867 * by the parser. This avoids parser's peek() to give the lexer | |
| 18868 * a false context. | |
| 18869 */ | |
| 18870 triggerAsync: function(type, args, checks, fn) { | |
| 18871 checks.push(function() { | |
| 18872 if (fn()) { | |
| 18873 this.trigger(type, args); | |
| 18874 } | |
| 18875 }.bind(this)); | |
| 18876 }, | |
| 18877 | |
| 18878 /* | |
| 18879 * Extract a punctuator out of the next sequence of characters | |
| 18880 * or return 'null' if its not possible. | |
| 18881 * | |
| 18882 * This method's implementation was heavily influenced by the | |
| 18883 * scanPunctuator function in the Esprima parser's source code. | |
| 18884 */ | |
| 18885 scanPunctuator: function() { | |
| 18886 var ch1 = this.peek(); | |
| 18887 var ch2, ch3, ch4; | |
| 18888 | |
| 18889 switch (ch1) { | |
| 18890 // Most common single-character punctuators | |
| 18891 case ".": | |
| 18892 if ((/^[0-9]$/).test(this.peek(1))) { | |
| 18893 return null; | |
| 18894 } | |
| 18895 if (this.peek(1) === "." && this.peek(2) === ".") { | |
| 18896 return { | |
| 18897 type: Token.Punctuator, | |
| 18898 value: "..." | |
| 18899 }; | |
| 18900 } | |
| 18901 /* falls through */ | |
| 18902 case "(": | |
| 18903 case ")": | |
| 18904 case ";": | |
| 18905 case ",": | |
| 18906 case "[": | |
| 18907 case "]": | |
| 18908 case ":": | |
| 18909 case "~": | |
| 18910 case "?": | |
| 18911 return { | |
| 18912 type: Token.Punctuator, | |
| 18913 value: ch1 | |
| 18914 }; | |
| 18915 | |
| 18916 // A block/object opener | |
| 18917 case "{": | |
| 18918 this.pushContext(Context.Block); | |
| 18919 return { | |
| 18920 type: Token.Punctuator, | |
| 18921 value: ch1 | |
| 18922 }; | |
| 18923 | |
| 18924 // A block/object closer | |
| 18925 case "}": | |
| 18926 if (this.inContext(Context.Block)) { | |
| 18927 this.popContext(); | |
| 18928 } | |
| 18929 return { | |
| 18930 type: Token.Punctuator, | |
| 18931 value: ch1 | |
| 18932 }; | |
| 18933 | |
| 18934 // A pound sign (for Node shebangs) | |
| 18935 case "#": | |
| 18936 return { | |
| 18937 type: Token.Punctuator, | |
| 18938 value: ch1 | |
| 18939 }; | |
| 18940 | |
| 18941 // We're at the end of input | |
| 18942 case "": | |
| 18943 return null; | |
| 18944 } | |
| 18945 | |
| 18946 // Peek more characters | |
| 18947 | |
| 18948 ch2 = this.peek(1); | |
| 18949 ch3 = this.peek(2); | |
| 18950 ch4 = this.peek(3); | |
| 18951 | |
| 18952 // 4-character punctuator: >>>= | |
| 18953 | |
| 18954 if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") { | |
| 18955 return { | |
| 18956 type: Token.Punctuator, | |
| 18957 value: ">>>=" | |
| 18958 }; | |
| 18959 } | |
| 18960 | |
| 18961 // 3-character punctuators: === !== >>> <<= >>= | |
| 18962 | |
| 18963 if (ch1 === "=" && ch2 === "=" && ch3 === "=") { | |
| 18964 return { | |
| 18965 type: Token.Punctuator, | |
| 18966 value: "===" | |
| 18967 }; | |
| 18968 } | |
| 18969 | |
| 18970 if (ch1 === "!" && ch2 === "=" && ch3 === "=") { | |
| 18971 return { | |
| 18972 type: Token.Punctuator, | |
| 18973 value: "!==" | |
| 18974 }; | |
| 18975 } | |
| 18976 | |
| 18977 if (ch1 === ">" && ch2 === ">" && ch3 === ">") { | |
| 18978 return { | |
| 18979 type: Token.Punctuator, | |
| 18980 value: ">>>" | |
| 18981 }; | |
| 18982 } | |
| 18983 | |
| 18984 if (ch1 === "<" && ch2 === "<" && ch3 === "=") { | |
| 18985 return { | |
| 18986 type: Token.Punctuator, | |
| 18987 value: "<<=" | |
| 18988 }; | |
| 18989 } | |
| 18990 | |
| 18991 if (ch1 === ">" && ch2 === ">" && ch3 === "=") { | |
| 18992 return { | |
| 18993 type: Token.Punctuator, | |
| 18994 value: ">>=" | |
| 18995 }; | |
| 18996 } | |
| 18997 | |
| 18998 // Fat arrow punctuator | |
| 18999 if (ch1 === "=" && ch2 === ">") { | |
| 19000 return { | |
| 19001 type: Token.Punctuator, | |
| 19002 value: ch1 + ch2 | |
| 19003 }; | |
| 19004 } | |
| 19005 | |
| 19006 // 2-character punctuators: ++ -- << >> && || ** | |
| 19007 if (ch1 === ch2 && ("+-<>&|*".indexOf(ch1) >= 0)) { | |
| 19008 if (ch1 === "*" && ch3 === "=") { | |
| 19009 return { | |
| 19010 type: Token.Punctuator, | |
| 19011 value: ch1 + ch2 + ch3 | |
| 19012 }; | |
| 19013 } | |
| 19014 | |
| 19015 return { | |
| 19016 type: Token.Punctuator, | |
| 19017 value: ch1 + ch2 | |
| 19018 }; | |
| 19019 } | |
| 19020 | |
| 19021 // <= >= != += -= *= %= &= |= ^= /= | |
| 19022 if ("<>=!+-*%&|^/".indexOf(ch1) >= 0) { | |
| 19023 if (ch2 === "=") { | |
| 19024 return { | |
| 19025 type: Token.Punctuator, | |
| 19026 value: ch1 + ch2 | |
| 19027 }; | |
| 19028 } | |
| 19029 | |
| 19030 return { | |
| 19031 type: Token.Punctuator, | |
| 19032 value: ch1 | |
| 19033 }; | |
| 19034 } | |
| 19035 | |
| 19036 return null; | |
| 19037 }, | |
| 19038 | |
| 19039 /* | |
| 19040 * Extract a comment out of the next sequence of characters and/or | |
| 19041 * lines or return 'null' if its not possible. Since comments can | |
| 19042 * span across multiple lines this method has to move the char | |
| 19043 * pointer. | |
| 19044 * | |
| 19045 * In addition to normal JavaScript comments (// and /*) this method | |
| 19046 * also recognizes JSHint- and JSLint-specific comments such as | |
| 19047 * /*jshint, /*jslint, /*globals and so on. | |
| 19048 */ | |
| 19049 scanComments: function(checks) { | |
| 19050 var ch1 = this.peek(); | |
| 19051 var ch2 = this.peek(1); | |
| 19052 var rest = this.input.substr(2); | |
| 19053 var startLine = this.line; | |
| 19054 var startChar = this.char; | |
| 19055 var self = this; | |
| 19056 | |
| 19057 // Create a comment token object and make sure it | |
| 19058 // has all the data JSHint needs to work with special | |
| 19059 // comments. | |
| 19060 | |
| 19061 function commentToken(label, body, opt) { | |
| 19062 var special = [ | |
| 19063 "jshint", "jshint.unstable", "jslint", "members", "member", "globals", | |
| 19064 "global", "exported" | |
| 19065 ]; | |
| 19066 var isSpecial = false; | |
| 19067 var value = label + body; | |
| 19068 var commentType = "plain"; | |
| 19069 opt = opt || {}; | |
| 19070 | |
| 19071 if (opt.isMultiline) { | |
| 19072 value += "*/"; | |
| 19073 } | |
| 19074 | |
| 19075 body = body.replace(/\n/g, " "); | |
| 19076 | |
| 19077 if (label === "/*" && reg.fallsThrough.test(body)) { | |
| 19078 isSpecial = true; | |
| 19079 commentType = "falls through"; | |
| 19080 } | |
| 19081 | |
| 19082 special.forEach(function(str) { | |
| 19083 if (isSpecial) { | |
| 19084 return; | |
| 19085 } | |
| 19086 | |
| 19087 // Don't recognize any special comments other than jshint for single-line | |
| 19088 // comments. This introduced many problems with legit comments. | |
| 19089 if (label === "//" && str !== "jshint" && str !== "jshint.unstable") { | |
| 19090 return; | |
| 19091 } | |
| 19092 | |
| 19093 if (body.charAt(str.length) === " " && body.substr(0, str.length) === str) { | |
| 19094 isSpecial = true; | |
| 19095 label = label + str; | |
| 19096 body = body.substr(str.length); | |
| 19097 } | |
| 19098 | |
| 19099 if (!isSpecial && body.charAt(0) === " " && body.charAt(str.length + 1) === " " && | |
| 19100 body.substr(1, str.length) === str) { | |
| 19101 isSpecial = true; | |
| 19102 label = label + " " + str; | |
| 19103 body = body.substr(str.length + 1); | |
| 19104 } | |
| 19105 | |
| 19106 // To handle rarer case when special word is separated from label by | |
| 19107 // multiple spaces or tabs | |
| 19108 var strIndex = body.indexOf(str); | |
| 19109 if (!isSpecial && strIndex >= 0 && body.charAt(strIndex + str.length) === " ") { | |
| 19110 var isAllWhitespace = body.substr(0, strIndex).trim().length === 0; | |
| 19111 if (isAllWhitespace) { | |
| 19112 isSpecial = true; | |
| 19113 body = body.substr(str.length + strIndex); | |
| 19114 } | |
| 19115 } | |
| 19116 | |
| 19117 if (!isSpecial) { | |
| 19118 return; | |
| 19119 } | |
| 19120 | |
| 19121 switch (str) { | |
| 19122 case "member": | |
| 19123 commentType = "members"; | |
| 19124 break; | |
| 19125 case "global": | |
| 19126 commentType = "globals"; | |
| 19127 break; | |
| 19128 default: | |
| 19129 var options = body.split(":").map(function(v) { | |
| 19130 return v.replace(/^\s+/, "").replace(/\s+$/, ""); | |
| 19131 }); | |
| 19132 | |
| 19133 if (options.length === 2) { | |
| 19134 switch (options[0]) { | |
| 19135 case "ignore": | |
| 19136 switch (options[1]) { | |
| 19137 case "start": | |
| 19138 self.ignoringLinterErrors = true; | |
| 19139 isSpecial = false; | |
| 19140 break; | |
| 19141 case "end": | |
| 19142 self.ignoringLinterErrors = false; | |
| 19143 isSpecial = false; | |
| 19144 break; | |
| 19145 } | |
| 19146 } | |
| 19147 } | |
| 19148 | |
| 19149 commentType = str; | |
| 19150 } | |
| 19151 }); | |
| 19152 | |
| 19153 return { | |
| 19154 type: Token.Comment, | |
| 19155 commentType: commentType, | |
| 19156 value: value, | |
| 19157 body: body, | |
| 19158 isSpecial: isSpecial, | |
| 19159 isMalformed: opt.isMalformed || false | |
| 19160 }; | |
| 19161 } | |
| 19162 | |
| 19163 // End of unbegun comment. Raise an error and skip that input. | |
| 19164 if (ch1 === "*" && ch2 === "/") { | |
| 19165 this.trigger("error", { | |
| 19166 code: "E018", | |
| 19167 line: startLine, | |
| 19168 character: startChar | |
| 19169 }); | |
| 19170 | |
| 19171 this.skip(2); | |
| 19172 return null; | |
| 19173 } | |
| 19174 | |
| 19175 // Comments must start either with // or /* | |
| 19176 if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) { | |
| 19177 return null; | |
| 19178 } | |
| 19179 | |
| 19180 // One-line comment | |
| 19181 if (ch2 === "/") { | |
| 19182 this.skip(this.input.length); // Skip to the EOL. | |
| 19183 return commentToken("//", rest); | |
| 19184 } | |
| 19185 | |
| 19186 var body = ""; | |
| 19187 | |
| 19188 /* Multi-line comment */ | |
| 19189 if (ch2 === "*") { | |
| 19190 this.inComment = true; | |
| 19191 this.skip(2); | |
| 19192 | |
| 19193 while (this.peek() !== "*" || this.peek(1) !== "/") { | |
| 19194 if (this.peek() === "") { // End of Line | |
| 19195 body += "\n"; | |
| 19196 | |
| 19197 // If we hit EOF and our comment is still unclosed, | |
| 19198 // trigger an error and end the comment implicitly. | |
| 19199 if (!this.nextLine(checks)) { | |
| 19200 this.trigger("error", { | |
| 19201 code: "E017", | |
| 19202 line: startLine, | |
| 19203 character: startChar | |
| 19204 }); | |
| 19205 | |
| 19206 this.inComment = false; | |
| 19207 return commentToken("/*", body, { | |
| 19208 isMultiline: true, | |
| 19209 isMalformed: true | |
| 19210 }); | |
| 19211 } | |
| 19212 } else { | |
| 19213 body += this.peek(); | |
| 19214 this.skip(); | |
| 19215 } | |
| 19216 } | |
| 19217 | |
| 19218 this.skip(2); | |
| 19219 this.inComment = false; | |
| 19220 return commentToken("/*", body, { isMultiline: true }); | |
| 19221 } | |
| 19222 }, | |
| 19223 | |
| 19224 /* | |
| 19225 * Extract a keyword out of the next sequence of characters or | |
| 19226 * return 'null' if its not possible. | |
| 19227 */ | |
| 19228 scanKeyword: function() { | |
| 19229 var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input); | |
| 19230 var keywords = [ | |
| 19231 "if", "in", "do", "var", "for", "new", | |
| 19232 "try", "let", "this", "else", "case", | |
| 19233 "void", "with", "enum", "while", "break", | |
| 19234 "catch", "throw", "const", "yield", "class", | |
| 19235 "super", "return", "typeof", "delete", | |
| 19236 "switch", "export", "import", "default", | |
| 19237 "finally", "extends", "function", "continue", | |
| 19238 "debugger", "instanceof", "true", "false", "null", "async", "await" | |
| 19239 ]; | |
| 19240 | |
| 19241 if (result && keywords.indexOf(result[0]) >= 0) { | |
| 19242 return { | |
| 19243 type: Token.Keyword, | |
| 19244 value: result[0] | |
| 19245 }; | |
| 19246 } | |
| 19247 | |
| 19248 return null; | |
| 19249 }, | |
| 19250 | |
| 19251 /* | |
| 19252 * Extract a JavaScript identifier out of the next sequence of | |
| 19253 * characters or return 'null' if its not possible. | |
| 19254 */ | |
| 19255 scanIdentifier: function(checks) { | |
| 19256 var id = ""; | |
| 19257 var index = 0; | |
| 19258 var char, value; | |
| 19259 | |
| 19260 function isNonAsciiIdentifierStart(code) { | |
| 19261 return nonAsciiIdentifierStartTable.indexOf(code) > -1; | |
| 19262 } | |
| 19263 | |
| 19264 function isNonAsciiIdentifierPart(code) { | |
| 19265 return isNonAsciiIdentifierStart(code) || nonAsciiIdentifierPartTable.indexOf(code) > -1; | |
| 19266 } | |
| 19267 | |
| 19268 var readUnicodeEscapeSequence = function() { | |
| 19269 /*jshint validthis:true */ | |
| 19270 index += 1; | |
| 19271 | |
| 19272 if (this.peek(index) !== "u") { | |
| 19273 return null; | |
| 19274 } | |
| 19275 | |
| 19276 var sequence = this.peek(index + 1) + this.peek(index + 2) + | |
| 19277 this.peek(index + 3) + this.peek(index + 4); | |
| 19278 var code; | |
| 19279 | |
| 19280 if (isHex(sequence)) { | |
| 19281 code = parseInt(sequence, 16); | |
| 19282 | |
| 19283 if (asciiIdentifierPartTable[code] || isNonAsciiIdentifierPart(code)) { | |
| 19284 index += 5; | |
| 19285 return "\\u" + sequence; | |
| 19286 } | |
| 19287 | |
| 19288 return null; | |
| 19289 } | |
| 19290 | |
| 19291 return null; | |
| 19292 }.bind(this); | |
| 19293 | |
| 19294 var getIdentifierStart = function() { | |
| 19295 /*jshint validthis:true */ | |
| 19296 var chr = this.peek(index); | |
| 19297 var code = chr.charCodeAt(0); | |
| 19298 | |
| 19299 if (code === 92) { | |
| 19300 return readUnicodeEscapeSequence(); | |
| 19301 } | |
| 19302 | |
| 19303 if (code < 128) { | |
| 19304 if (asciiIdentifierStartTable[code]) { | |
| 19305 index += 1; | |
| 19306 return chr; | |
| 19307 } | |
| 19308 | |
| 19309 return null; | |
| 19310 } | |
| 19311 | |
| 19312 if (isNonAsciiIdentifierStart(code)) { | |
| 19313 index += 1; | |
| 19314 return chr; | |
| 19315 } | |
| 19316 | |
| 19317 return null; | |
| 19318 }.bind(this); | |
| 19319 | |
| 19320 var getIdentifierPart = function() { | |
| 19321 /*jshint validthis:true */ | |
| 19322 var chr = this.peek(index); | |
| 19323 var code = chr.charCodeAt(0); | |
| 19324 | |
| 19325 if (code === 92) { | |
| 19326 return readUnicodeEscapeSequence(); | |
| 19327 } | |
| 19328 | |
| 19329 if (code < 128) { | |
| 19330 if (asciiIdentifierPartTable[code]) { | |
| 19331 index += 1; | |
| 19332 return chr; | |
| 19333 } | |
| 19334 | |
| 19335 return null; | |
| 19336 } | |
| 19337 | |
| 19338 if (isNonAsciiIdentifierPart(code)) { | |
| 19339 index += 1; | |
| 19340 return chr; | |
| 19341 } | |
| 19342 | |
| 19343 return null; | |
| 19344 }.bind(this); | |
| 19345 | |
| 19346 function removeEscapeSequences(id) { | |
| 19347 return id.replace(/\\u([0-9a-fA-F]{4})/g, function(m0, codepoint) { | |
| 19348 return String.fromCharCode(parseInt(codepoint, 16)); | |
| 19349 }); | |
| 19350 } | |
| 19351 | |
| 19352 char = getIdentifierStart(); | |
| 19353 if (char === null) { | |
| 19354 return null; | |
| 19355 } | |
| 19356 | |
| 19357 id = char; | |
| 19358 for (;;) { | |
| 19359 char = getIdentifierPart(); | |
| 19360 | |
| 19361 if (char === null) { | |
| 19362 break; | |
| 19363 } | |
| 19364 | |
| 19365 id += char; | |
| 19366 } | |
| 19367 | |
| 19368 value = removeEscapeSequences(id); | |
| 19369 | |
| 19370 if (!state.inES6(true)) { | |
| 19371 es5IdentifierNames = require("../data/es5-identifier-names.js"); | |
| 19372 | |
| 19373 if (!es5IdentifierNames.test(value)) { | |
| 19374 this.triggerAsync( | |
| 19375 "warning", | |
| 19376 { | |
| 19377 code: "W119", | |
| 19378 line: this.line, | |
| 19379 character: this.char, | |
| 19380 data: ["unicode 8", "6"] | |
| 19381 }, | |
| 19382 checks, | |
| 19383 function() { return true; } | |
| 19384 ); | |
| 19385 } | |
| 19386 } | |
| 19387 | |
| 19388 return { | |
| 19389 type: Token.Identifier, | |
| 19390 value: value, | |
| 19391 text: id, | |
| 19392 tokenLength: id.length | |
| 19393 }; | |
| 19394 }, | |
| 19395 | |
| 19396 /* | |
| 19397 * Extract a numeric literal out of the next sequence of | |
| 19398 * characters or return 'null' if its not possible. This method | |
| 19399 * supports all numeric literals described in section 7.8.3 | |
| 19400 * of the EcmaScript 5 specification. | |
| 19401 * | |
| 19402 * This method's implementation was heavily influenced by the | |
| 19403 * scanNumericLiteral function in the Esprima parser's source code. | |
| 19404 */ | |
| 19405 scanNumericLiteral: function(checks) { | |
| 19406 var index = 0; | |
| 19407 var value = ""; | |
| 19408 var length = this.input.length; | |
| 19409 var char = this.peek(index); | |
| 19410 var isAllowedDigit = isDecimalDigit; | |
| 19411 var base = 10; | |
| 19412 var isLegacy = false; | |
| 19413 var isNonOctal = false; | |
| 19414 | |
| 19415 function isDecimalDigit(str) { | |
| 19416 return (/^[0-9]$/).test(str); | |
| 19417 } | |
| 19418 | |
| 19419 function isOctalDigit(str) { | |
| 19420 return (/^[0-7]$/).test(str); | |
| 19421 } | |
| 19422 | |
| 19423 function isNonOctalDigit(str) { | |
| 19424 return str === "8" || str === "9"; | |
| 19425 } | |
| 19426 | |
| 19427 function isBinaryDigit(str) { | |
| 19428 return (/^[01]$/).test(str); | |
| 19429 } | |
| 19430 | |
| 19431 function isIdentifierStart(ch) { | |
| 19432 return (ch === "$") || (ch === "_") || (ch === "\\") || | |
| 19433 (ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z"); | |
| 19434 } | |
| 19435 | |
| 19436 // Numbers must start either with a decimal digit or a point. | |
| 19437 | |
| 19438 if (char !== "." && !isDecimalDigit(char)) { | |
| 19439 return null; | |
| 19440 } | |
| 19441 | |
| 19442 if (char !== ".") { | |
| 19443 value = this.peek(index); | |
| 19444 index += 1; | |
| 19445 char = this.peek(index); | |
| 19446 | |
| 19447 if (value === "0") { | |
| 19448 // Base-16 numbers. | |
| 19449 if (char === "x" || char === "X") { | |
| 19450 isAllowedDigit = isHexDigit; | |
| 19451 base = 16; | |
| 19452 | |
| 19453 index += 1; | |
| 19454 value += char; | |
| 19455 } | |
| 19456 | |
| 19457 // Base-8 numbers. | |
| 19458 if (char === "o" || char === "O") { | |
| 19459 isAllowedDigit = isOctalDigit; | |
| 19460 base = 8; | |
| 19461 | |
| 19462 if (!state.inES6(true)) { | |
| 19463 this.triggerAsync( | |
| 19464 "warning", | |
| 19465 { | |
| 19466 code: "W119", | |
| 19467 line: this.line, | |
| 19468 character: this.char, | |
| 19469 data: [ "Octal integer literal", "6" ] | |
| 19470 }, | |
| 19471 checks, | |
| 19472 function() { return true; } | |
| 19473 ); | |
| 19474 } | |
| 19475 | |
| 19476 index += 1; | |
| 19477 value += char; | |
| 19478 } | |
| 19479 | |
| 19480 // Base-2 numbers. | |
| 19481 if (char === "b" || char === "B") { | |
| 19482 isAllowedDigit = isBinaryDigit; | |
| 19483 base = 2; | |
| 19484 | |
| 19485 if (!state.inES6(true)) { | |
| 19486 this.triggerAsync( | |
| 19487 "warning", | |
| 19488 { | |
| 19489 code: "W119", | |
| 19490 line: this.line, | |
| 19491 character: this.char, | |
| 19492 data: [ "Binary integer literal", "6" ] | |
| 19493 }, | |
| 19494 checks, | |
| 19495 function() { return true; } | |
| 19496 ); | |
| 19497 } | |
| 19498 | |
| 19499 index += 1; | |
| 19500 value += char; | |
| 19501 } | |
| 19502 | |
| 19503 // Legacy base-8 numbers. | |
| 19504 if (isOctalDigit(char)) { | |
| 19505 isAllowedDigit = isOctalDigit; | |
| 19506 base = 8; | |
| 19507 isLegacy = true; | |
| 19508 | |
| 19509 } else if (isDecimalDigit(char)) { | |
| 19510 isNonOctal = true; | |
| 19511 } | |
| 19512 } | |
| 19513 | |
| 19514 while (index < length) { | |
| 19515 char = this.peek(index); | |
| 19516 | |
| 19517 if (isLegacy && isNonOctalDigit(char)) { | |
| 19518 base = 10; | |
| 19519 isLegacy = false; | |
| 19520 isNonOctal = true; | |
| 19521 isAllowedDigit = isDecimalDigit; | |
| 19522 } | |
| 19523 | |
| 19524 if (!isAllowedDigit(char)) { | |
| 19525 break; | |
| 19526 } | |
| 19527 value += char; | |
| 19528 index += 1; | |
| 19529 } | |
| 19530 | |
| 19531 var isBigInt = this.peek(index) === 'n'; | |
| 19532 | |
| 19533 if (isAllowedDigit !== isDecimalDigit || isBigInt) { | |
| 19534 if (isBigInt) { | |
| 19535 if (!state.option.unstable.bigint) { | |
| 19536 this.triggerAsync( | |
| 19537 "warning", | |
| 19538 { | |
| 19539 code: "W144", | |
| 19540 line: this.line, | |
| 19541 character: this.char, | |
| 19542 data: [ "BigInt", "bigint" ] | |
| 19543 }, | |
| 19544 checks, | |
| 19545 function() { return true; } | |
| 19546 ); | |
| 19547 } | |
| 19548 | |
| 19549 if (isLegacy || isNonOctal) { | |
| 19550 this.triggerAsync( | |
| 19551 "error", | |
| 19552 { | |
| 19553 code: "E067", | |
| 19554 line: this.line, | |
| 19555 character: this.char, | |
| 19556 data: [value + char] | |
| 19557 }, | |
| 19558 checks, | |
| 19559 function() { return true; } | |
| 19560 ); | |
| 19561 } | |
| 19562 | |
| 19563 value += char; | |
| 19564 index += 1; | |
| 19565 } else if (!isLegacy && value.length <= 2) { // 0x | |
| 19566 return { | |
| 19567 type: Token.NumericLiteral, | |
| 19568 value: value, | |
| 19569 isMalformed: true | |
| 19570 }; | |
| 19571 } | |
| 19572 | |
| 19573 if (index < length) { | |
| 19574 char = this.peek(index); | |
| 19575 if (isIdentifierStart(char)) { | |
| 19576 return null; | |
| 19577 } | |
| 19578 } | |
| 19579 | |
| 19580 return { | |
| 19581 type: Token.NumericLiteral, | |
| 19582 value: value, | |
| 19583 base: base, | |
| 19584 isLegacy: isLegacy, | |
| 19585 isMalformed: false | |
| 19586 }; | |
| 19587 } | |
| 19588 } | |
| 19589 | |
| 19590 // Decimal digits. | |
| 19591 | |
| 19592 if (char === ".") { | |
| 19593 value += char; | |
| 19594 index += 1; | |
| 19595 | |
| 19596 while (index < length) { | |
| 19597 char = this.peek(index); | |
| 19598 if (!isDecimalDigit(char)) { | |
| 19599 break; | |
| 19600 } | |
| 19601 value += char; | |
| 19602 index += 1; | |
| 19603 } | |
| 19604 } | |
| 19605 | |
| 19606 // Exponent part. | |
| 19607 | |
| 19608 if (char === "e" || char === "E") { | |
| 19609 value += char; | |
| 19610 index += 1; | |
| 19611 char = this.peek(index); | |
| 19612 | |
| 19613 if (char === "+" || char === "-") { | |
| 19614 value += this.peek(index); | |
| 19615 index += 1; | |
| 19616 } | |
| 19617 | |
| 19618 char = this.peek(index); | |
| 19619 if (isDecimalDigit(char)) { | |
| 19620 value += char; | |
| 19621 index += 1; | |
| 19622 | |
| 19623 while (index < length) { | |
| 19624 char = this.peek(index); | |
| 19625 if (!isDecimalDigit(char)) { | |
| 19626 break; | |
| 19627 } | |
| 19628 value += char; | |
| 19629 index += 1; | |
| 19630 } | |
| 19631 } else { | |
| 19632 return null; | |
| 19633 } | |
| 19634 } | |
| 19635 | |
| 19636 if (index < length) { | |
| 19637 char = this.peek(index); | |
| 19638 if (isIdentifierStart(char)) { | |
| 19639 return null; | |
| 19640 } | |
| 19641 } | |
| 19642 | |
| 19643 // TODO: Extend this check to other numeric literals | |
| 19644 this.triggerAsync("warning", { | |
| 19645 code: "W045", | |
| 19646 line: this.line, | |
| 19647 character: this.char + value.length, | |
| 19648 data: [ value ] | |
| 19649 }, checks, function() { return !isFinite(value); }); | |
| 19650 | |
| 19651 return { | |
| 19652 type: Token.NumericLiteral, | |
| 19653 value: value, | |
| 19654 base: base, | |
| 19655 isNonOctal: isNonOctal, | |
| 19656 isMalformed: false | |
| 19657 }; | |
| 19658 }, | |
| 19659 | |
| 19660 | |
| 19661 // Assumes previously parsed character was \ (=== '\\') and was not skipped. | |
| 19662 scanEscapeSequence: function(checks) { | |
| 19663 var allowNewLine = false; | |
| 19664 var jump = 1; | |
| 19665 this.skip(); | |
| 19666 var char = this.peek(); | |
| 19667 | |
| 19668 switch (char) { | |
| 19669 case "'": | |
| 19670 this.triggerAsync("warning", { | |
| 19671 code: "W114", | |
| 19672 line: this.line, | |
| 19673 character: this.char, | |
| 19674 data: [ "\\'" ] | |
| 19675 }, checks, function() {return state.jsonMode; }); | |
| 19676 break; | |
| 19677 case "b": | |
| 19678 char = "\\b"; | |
| 19679 break; | |
| 19680 case "f": | |
| 19681 char = "\\f"; | |
| 19682 break; | |
| 19683 case "n": | |
| 19684 char = "\\n"; | |
| 19685 break; | |
| 19686 case "r": | |
| 19687 char = "\\r"; | |
| 19688 break; | |
| 19689 case "t": | |
| 19690 char = "\\t"; | |
| 19691 break; | |
| 19692 case "0": | |
| 19693 char = "\\0"; | |
| 19694 | |
| 19695 // Octal literals fail in strict mode. | |
| 19696 // Check if the number is between 00 and 07. | |
| 19697 var n = parseInt(this.peek(1), 10); | |
| 19698 this.triggerAsync("warning", { | |
| 19699 code: "W115", | |
| 19700 line: this.line, | |
| 19701 character: this.char | |
| 19702 }, checks, | |
| 19703 function() { return n >= 0 && n <= 7 && state.isStrict(); }); | |
| 19704 break; | |
| 19705 case "1": | |
| 19706 case "2": | |
| 19707 case "3": | |
| 19708 case "4": | |
| 19709 case "5": | |
| 19710 case "6": | |
| 19711 case "7": | |
| 19712 char = "\\" + char; | |
| 19713 this.triggerAsync("warning", { | |
| 19714 code: "W115", | |
| 19715 line: this.line, | |
| 19716 character: this.char | |
| 19717 }, checks, | |
| 19718 function() { return state.isStrict(); }); | |
| 19719 break; | |
| 19720 case "u": | |
| 19721 var sequence = this.input.substr(1, 4); | |
| 19722 var code = parseInt(sequence, 16); | |
| 19723 if (!isHex(sequence)) { | |
| 19724 // This condition unequivocally describes a syntax error. | |
| 19725 // TODO: Re-factor as an "error" (not a "warning"). | |
| 19726 this.trigger("warning", { | |
| 19727 code: "W052", | |
| 19728 line: this.line, | |
| 19729 character: this.char, | |
| 19730 data: [ "u" + sequence ] | |
| 19731 }); | |
| 19732 } | |
| 19733 char = String.fromCharCode(code); | |
| 19734 jump = 5; | |
| 19735 break; | |
| 19736 case "v": | |
| 19737 this.triggerAsync("warning", { | |
| 19738 code: "W114", | |
| 19739 line: this.line, | |
| 19740 character: this.char, | |
| 19741 data: [ "\\v" ] | |
| 19742 }, checks, function() { return state.jsonMode; }); | |
| 19743 | |
| 19744 char = "\v"; | |
| 19745 break; | |
| 19746 case "x": | |
| 19747 var x = parseInt(this.input.substr(1, 2), 16); | |
| 19748 | |
| 19749 this.triggerAsync("warning", { | |
| 19750 code: "W114", | |
| 19751 line: this.line, | |
| 19752 character: this.char, | |
| 19753 data: [ "\\x-" ] | |
| 19754 }, checks, function() { return state.jsonMode; }); | |
| 19755 | |
| 19756 char = String.fromCharCode(x); | |
| 19757 jump = 3; | |
| 19758 break; | |
| 19759 case "\\": | |
| 19760 char = "\\\\"; | |
| 19761 break; | |
| 19762 case "\"": | |
| 19763 char = "\\\""; | |
| 19764 break; | |
| 19765 case "/": | |
| 19766 break; | |
| 19767 case "": | |
| 19768 allowNewLine = true; | |
| 19769 char = ""; | |
| 19770 break; | |
| 19771 } | |
| 19772 | |
| 19773 return { char: char, jump: jump, allowNewLine: allowNewLine }; | |
| 19774 }, | |
| 19775 | |
| 19776 /* | |
| 19777 * Extract a template literal out of the next sequence of characters | |
| 19778 * and/or lines or return 'null' if its not possible. Since template | |
| 19779 * literals can span across multiple lines, this method has to move | |
| 19780 * the char pointer. | |
| 19781 */ | |
| 19782 scanTemplateLiteral: function(checks) { | |
| 19783 var tokenType; | |
| 19784 var value = ""; | |
| 19785 var ch; | |
| 19786 var startLine = this.line; | |
| 19787 var startChar = this.char; | |
| 19788 var depth = this.templateStarts.length; | |
| 19789 | |
| 19790 if (this.peek() === "`") { | |
| 19791 if (!state.inES6(true)) { | |
| 19792 this.triggerAsync( | |
| 19793 "warning", | |
| 19794 { | |
| 19795 code: "W119", | |
| 19796 line: this.line, | |
| 19797 character: this.char, | |
| 19798 data: ["template literal syntax", "6"] | |
| 19799 }, | |
| 19800 checks, | |
| 19801 function() { return true; } | |
| 19802 ); | |
| 19803 } | |
| 19804 // Template must start with a backtick. | |
| 19805 tokenType = Token.TemplateHead; | |
| 19806 this.templateStarts.push({ line: this.line, char: this.char }); | |
| 19807 depth = this.templateStarts.length; | |
| 19808 this.skip(1); | |
| 19809 this.pushContext(Context.Template); | |
| 19810 } else if (this.inContext(Context.Template) && this.peek() === "}") { | |
| 19811 // If we're in a template context, and we have a '}', lex a TemplateMiddle. | |
| 19812 tokenType = Token.TemplateMiddle; | |
| 19813 } else { | |
| 19814 // Go lex something else. | |
| 19815 return null; | |
| 19816 } | |
| 19817 | |
| 19818 while (this.peek() !== "`") { | |
| 19819 while ((ch = this.peek()) === "") { | |
| 19820 value += "\n"; | |
| 19821 if (!this.nextLine(checks)) { | |
| 19822 // Unclosed template literal --- point to the starting "`" | |
| 19823 var startPos = this.templateStarts.pop(); | |
| 19824 this.trigger("error", { | |
| 19825 code: "E052", | |
| 19826 line: startPos.line, | |
| 19827 character: startPos.char | |
| 19828 }); | |
| 19829 return { | |
| 19830 type: tokenType, | |
| 19831 value: value, | |
| 19832 startLine: startLine, | |
| 19833 startChar: startChar, | |
| 19834 isUnclosed: true, | |
| 19835 depth: depth, | |
| 19836 context: this.popContext() | |
| 19837 }; | |
| 19838 } | |
| 19839 } | |
| 19840 | |
| 19841 if (ch === '$' && this.peek(1) === '{') { | |
| 19842 value += '${'; | |
| 19843 this.skip(2); | |
| 19844 return { | |
| 19845 type: tokenType, | |
| 19846 value: value, | |
| 19847 startLine: startLine, | |
| 19848 startChar: startChar, | |
| 19849 isUnclosed: false, | |
| 19850 depth: depth, | |
| 19851 context: this.currentContext() | |
| 19852 }; | |
| 19853 } else if (ch === '\\') { | |
| 19854 var escape = this.scanEscapeSequence(checks); | |
| 19855 value += escape.char; | |
| 19856 this.skip(escape.jump); | |
| 19857 } else if (ch !== '`') { | |
| 19858 // Otherwise, append the value and continue. | |
| 19859 value += ch; | |
| 19860 this.skip(1); | |
| 19861 } | |
| 19862 } | |
| 19863 | |
| 19864 // Final value is either NoSubstTemplate or TemplateTail | |
| 19865 tokenType = tokenType === Token.TemplateHead ? Token.NoSubstTemplate : Token.TemplateTail; | |
| 19866 this.skip(1); | |
| 19867 this.templateStarts.pop(); | |
| 19868 | |
| 19869 return { | |
| 19870 type: tokenType, | |
| 19871 value: value, | |
| 19872 startLine: startLine, | |
| 19873 startChar: startChar, | |
| 19874 isUnclosed: false, | |
| 19875 depth: depth, | |
| 19876 context: this.popContext() | |
| 19877 }; | |
| 19878 }, | |
| 19879 | |
| 19880 /* | |
| 19881 * Extract a string out of the next sequence of characters and/or | |
| 19882 * lines or return 'null' if its not possible. Since strings can | |
| 19883 * span across multiple lines this method has to move the char | |
| 19884 * pointer. | |
| 19885 * | |
| 19886 * This method recognizes pseudo-multiline JavaScript strings: | |
| 19887 * | |
| 19888 * var str = "hello\ | |
| 19889 * world"; | |
| 19890 */ | |
| 19891 scanStringLiteral: function(checks) { | |
| 19892 /*jshint loopfunc:true */ | |
| 19893 var quote = this.peek(); | |
| 19894 | |
| 19895 // String must start with a quote. | |
| 19896 if (quote !== "\"" && quote !== "'") { | |
| 19897 return null; | |
| 19898 } | |
| 19899 | |
| 19900 // In JSON strings must always use double quotes. | |
| 19901 this.triggerAsync("warning", { | |
| 19902 code: "W108", | |
| 19903 line: this.line, | |
| 19904 character: this.char // +1? | |
| 19905 }, checks, function() { return state.jsonMode && quote !== "\""; }); | |
| 19906 | |
| 19907 var value = ""; | |
| 19908 var startLine = this.line; | |
| 19909 var startChar = this.char; | |
| 19910 var allowNewLine = false; | |
| 19911 | |
| 19912 this.skip(); | |
| 19913 | |
| 19914 while (this.peek() !== quote) { | |
| 19915 if (this.peek() === "") { // End Of Line | |
| 19916 | |
| 19917 // If an EOL is not preceded by a backslash, show a warning | |
| 19918 // and proceed like it was a legit multi-line string where | |
| 19919 // author simply forgot to escape the newline symbol. | |
| 19920 // | |
| 19921 // Another approach is to implicitly close a string on EOL | |
| 19922 // but it generates too many false positives. | |
| 19923 | |
| 19924 if (!allowNewLine) { | |
| 19925 // This condition unequivocally describes a syntax error. | |
| 19926 // TODO: Emit error E029 and remove W112. | |
| 19927 this.trigger("warning", { | |
| 19928 code: "W112", | |
| 19929 line: this.line, | |
| 19930 character: this.char | |
| 19931 }); | |
| 19932 } else { | |
| 19933 allowNewLine = false; | |
| 19934 | |
| 19935 // Otherwise show a warning if multistr option was not set. | |
| 19936 // For JSON, show warning no matter what. | |
| 19937 | |
| 19938 this.triggerAsync("warning", { | |
| 19939 code: "W043", | |
| 19940 line: this.line, | |
| 19941 character: this.char | |
| 19942 }, checks, function() { return !state.option.multistr; }); | |
| 19943 | |
| 19944 this.triggerAsync("warning", { | |
| 19945 code: "W042", | |
| 19946 line: this.line, | |
| 19947 character: this.char | |
| 19948 }, checks, function() { return state.jsonMode && state.option.multistr; }); | |
| 19949 } | |
| 19950 | |
| 19951 // If we get an EOF inside of an unclosed string, show an | |
| 19952 // error and implicitly close it at the EOF point. | |
| 19953 | |
| 19954 if (!this.nextLine(checks)) { | |
| 19955 return { | |
| 19956 type: Token.StringLiteral, | |
| 19957 value: value, | |
| 19958 startLine: startLine, | |
| 19959 startChar: startChar, | |
| 19960 isUnclosed: true, | |
| 19961 quote: quote | |
| 19962 }; | |
| 19963 } | |
| 19964 | |
| 19965 } else { // Any character other than End Of Line | |
| 19966 | |
| 19967 allowNewLine = false; | |
| 19968 var char = this.peek(); | |
| 19969 var jump = 1; // A length of a jump, after we're done | |
| 19970 // parsing this character. | |
| 19971 | |
| 19972 if (char < " ") { | |
| 19973 // Warn about a control character in a string. | |
| 19974 this.triggerAsync( | |
| 19975 "warning", | |
| 19976 { | |
| 19977 code: "W113", | |
| 19978 line: this.line, | |
| 19979 character: this.char, | |
| 19980 data: [ "<non-printable>" ] | |
| 19981 }, | |
| 19982 checks, | |
| 19983 function() { return true; } | |
| 19984 ); | |
| 19985 } | |
| 19986 | |
| 19987 // Special treatment for some escaped characters. | |
| 19988 if (char === "\\") { | |
| 19989 var parsed = this.scanEscapeSequence(checks); | |
| 19990 char = parsed.char; | |
| 19991 jump = parsed.jump; | |
| 19992 allowNewLine = parsed.allowNewLine; | |
| 19993 } | |
| 19994 | |
| 19995 // If char is the empty string, end of the line has been reached. In | |
| 19996 // this case, `this.char` should not be incremented so that warnings | |
| 19997 // and errors reported in the subsequent loop iteration have the | |
| 19998 // correct character column offset. | |
| 19999 if (char !== "") { | |
| 20000 value += char; | |
| 20001 this.skip(jump); | |
| 20002 } | |
| 20003 } | |
| 20004 } | |
| 20005 | |
| 20006 this.skip(); | |
| 20007 return { | |
| 20008 type: Token.StringLiteral, | |
| 20009 value: value, | |
| 20010 startLine: startLine, | |
| 20011 startChar: startChar, | |
| 20012 isUnclosed: false, | |
| 20013 quote: quote | |
| 20014 }; | |
| 20015 }, | |
| 20016 | |
| 20017 /* | |
| 20018 * Extract a regular expression out of the next sequence of | |
| 20019 * characters and/or lines or return 'null' if its not possible. | |
| 20020 * | |
| 20021 * This method is platform dependent: it accepts almost any | |
| 20022 * regular expression values but then tries to compile and run | |
| 20023 * them using system's RegExp object. This means that there are | |
| 20024 * rare edge cases where one JavaScript engine complains about | |
| 20025 * your regular expression while others don't. | |
| 20026 */ | |
| 20027 scanRegExp: function(checks) { | |
| 20028 var index = 0; | |
| 20029 var length = this.input.length; | |
| 20030 var char = this.peek(); | |
| 20031 var value = char; | |
| 20032 var body = ""; | |
| 20033 var groupReferences = []; | |
| 20034 var allFlags = ""; | |
| 20035 var es5Flags = ""; | |
| 20036 var malformed = false; | |
| 20037 var isCharSet = false; | |
| 20038 var isCharSetRange = false; | |
| 20039 var isGroup = false; | |
| 20040 var isQuantifiable = false; | |
| 20041 var hasInvalidQuantifier = false; | |
| 20042 var escapedChars = ""; | |
| 20043 var hasUFlag = function() { return allFlags.indexOf("u") > -1; }; | |
| 20044 var escapeSequence; | |
| 20045 var groupCount = 0; | |
| 20046 var terminated, malformedDesc; | |
| 20047 | |
| 20048 var scanRegexpEscapeSequence = function() { | |
| 20049 var next, sequence; | |
| 20050 index += 1; | |
| 20051 char = this.peek(index); | |
| 20052 | |
| 20053 if (reg.nonzeroDigit.test(char)) { | |
| 20054 sequence = char; | |
| 20055 next = this.peek(index + 1); | |
| 20056 while (reg.nonzeroDigit.test(next) || next === "0") { | |
| 20057 index += 1; | |
| 20058 char = next; | |
| 20059 sequence += char; | |
| 20060 body += char; | |
| 20061 value += char; | |
| 20062 next = this.peek(index + 1); | |
| 20063 } | |
| 20064 groupReferences.push(Number(sequence)); | |
| 20065 return sequence; | |
| 20066 } | |
| 20067 | |
| 20068 escapedChars += char; | |
| 20069 | |
| 20070 if (char === "u" && this.peek(index + 1) === "{") { | |
| 20071 var x = index + 2; | |
| 20072 sequence = "u{"; | |
| 20073 next = this.peek(x); | |
| 20074 while (isHex(next)) { | |
| 20075 sequence += next; | |
| 20076 x += 1; | |
| 20077 next = this.peek(x); | |
| 20078 } | |
| 20079 | |
| 20080 if (next !== "}") { | |
| 20081 this.triggerAsync( | |
| 20082 "error", | |
| 20083 { | |
| 20084 code: "E016", | |
| 20085 line: this.line, | |
| 20086 character: this.char, | |
| 20087 data: [ "Invalid Unicode escape sequence" ] | |
| 20088 }, | |
| 20089 checks, | |
| 20090 hasUFlag | |
| 20091 ); | |
| 20092 } else if (sequence.length > 2) { | |
| 20093 sequence += "}"; | |
| 20094 body += sequence; | |
| 20095 value += sequence; | |
| 20096 index = x + 1; | |
| 20097 return sequence; | |
| 20098 } | |
| 20099 } | |
| 20100 | |
| 20101 // Unexpected control character | |
| 20102 if (char < " ") { | |
| 20103 malformed = true; | |
| 20104 this.triggerAsync( | |
| 20105 "warning", | |
| 20106 { | |
| 20107 code: "W048", | |
| 20108 line: this.line, | |
| 20109 character: this.char | |
| 20110 }, | |
| 20111 checks, | |
| 20112 function() { return true; } | |
| 20113 ); | |
| 20114 } | |
| 20115 | |
| 20116 // Unexpected escaped character | |
| 20117 if (char === "<") { | |
| 20118 malformed = true; | |
| 20119 this.triggerAsync( | |
| 20120 "warning", | |
| 20121 { | |
| 20122 code: "W049", | |
| 20123 line: this.line, | |
| 20124 character: this.char, | |
| 20125 data: [ char ] | |
| 20126 }, | |
| 20127 checks, | |
| 20128 function() { return true; } | |
| 20129 ); | |
| 20130 } else if (char === "0" && reg.decimalDigit.test(this.peek(index + 1))) { | |
| 20131 this.triggerAsync( | |
| 20132 "error", | |
| 20133 { | |
| 20134 code: "E016", | |
| 20135 line: this.line, | |
| 20136 character: this.char, | |
| 20137 data: [ "Invalid decimal escape sequence" ] | |
| 20138 }, | |
| 20139 checks, | |
| 20140 hasUFlag | |
| 20141 ); | |
| 20142 } | |
| 20143 | |
| 20144 index += 1; | |
| 20145 body += char; | |
| 20146 value += char; | |
| 20147 | |
| 20148 return char; | |
| 20149 }.bind(this); | |
| 20150 | |
| 20151 var checkQuantifier = function() { | |
| 20152 var lookahead = index; | |
| 20153 var lowerBound = ""; | |
| 20154 var upperBound = ""; | |
| 20155 var next; | |
| 20156 | |
| 20157 next = this.peek(lookahead + 1); | |
| 20158 | |
| 20159 while (reg.decimalDigit.test(next)) { | |
| 20160 lookahead += 1; | |
| 20161 lowerBound += next; | |
| 20162 next = this.peek(lookahead + 1); | |
| 20163 } | |
| 20164 | |
| 20165 if (!lowerBound) { | |
| 20166 return false; | |
| 20167 } | |
| 20168 | |
| 20169 if (next === "}") { | |
| 20170 return true; | |
| 20171 } | |
| 20172 | |
| 20173 if (next !== ",") { | |
| 20174 return false; | |
| 20175 } | |
| 20176 | |
| 20177 lookahead += 1; | |
| 20178 next = this.peek(lookahead + 1); | |
| 20179 | |
| 20180 while (reg.decimalDigit.test(next)) { | |
| 20181 lookahead += 1; | |
| 20182 upperBound += next; | |
| 20183 next = this.peek(lookahead + 1); | |
| 20184 } | |
| 20185 | |
| 20186 if (next !== "}") { | |
| 20187 return false; | |
| 20188 } | |
| 20189 | |
| 20190 if (upperBound) { | |
| 20191 return Number(lowerBound) <= Number(upperBound); | |
| 20192 } | |
| 20193 | |
| 20194 return true; | |
| 20195 }.bind(this); | |
| 20196 | |
| 20197 var translateUFlag = function(body) { | |
| 20198 // The BMP character to use as a replacement for astral symbols when | |
| 20199 // translating an ES6 "u"-flagged pattern to an ES5-compatible | |
| 20200 // approximation. | |
| 20201 // Note: replacing with '\uFFFF' enables false positives in unlikely | |
| 20202 // scenarios. For example, `[\u{1044f}-\u{10440}]` is an invalid pattern | |
| 20203 // that would not be detected by this substitution. | |
| 20204 var astralSubstitute = "\uFFFF"; | |
| 20205 | |
| 20206 return body | |
| 20207 // Replace every Unicode escape sequence with the equivalent BMP | |
| 20208 // character or a constant ASCII code point in the case of astral | |
| 20209 // symbols. (See the above note on `astralSubstitute` for more | |
| 20210 // information.) | |
| 20211 .replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, function($0, $1, $2) { | |
| 20212 var codePoint = parseInt($1 || $2, 16); | |
| 20213 var literal; | |
| 20214 | |
| 20215 if (codePoint > 0x10FFFF) { | |
| 20216 malformed = true; | |
| 20217 this.trigger("error", { | |
| 20218 code: "E016", | |
| 20219 line: this.line, | |
| 20220 character: this.char, | |
| 20221 data: [ char ] | |
| 20222 }); | |
| 20223 | |
| 20224 return; | |
| 20225 } | |
| 20226 literal = String.fromCharCode(codePoint); | |
| 20227 | |
| 20228 if (reg.regexpSyntaxChars.test(literal)) { | |
| 20229 return $0; | |
| 20230 } | |
| 20231 | |
| 20232 if (codePoint <= 0xFFFF) { | |
| 20233 return String.fromCharCode(codePoint); | |
| 20234 } | |
| 20235 return astralSubstitute; | |
| 20236 }.bind(this)) | |
| 20237 // Replace each paired surrogate with a single ASCII symbol to avoid | |
| 20238 // throwing on regular expressions that are only valid in combination | |
| 20239 // with the "u" flag. | |
| 20240 .replace( | |
| 20241 /[\uD800-\uDBFF][\uDC00-\uDFFF]/g, | |
| 20242 astralSubstitute | |
| 20243 ); | |
| 20244 }.bind(this); | |
| 20245 | |
| 20246 // Regular expressions must start with '/' | |
| 20247 if (!this.prereg || char !== "/") { | |
| 20248 return null; | |
| 20249 } | |
| 20250 | |
| 20251 index += 1; | |
| 20252 terminated = false; | |
| 20253 | |
| 20254 // Try to get everything in between slashes. A couple of | |
| 20255 // cases aside (see scanRegexpEscapeSequence) we don't really | |
| 20256 // care whether the resulting expression is valid or not. | |
| 20257 // We will check that later using the RegExp object. | |
| 20258 | |
| 20259 while (index < length) { | |
| 20260 // Because an iteration of this loop may terminate in a number of | |
| 20261 // distinct locations, `isCharSetRange` is re-set at the onset of | |
| 20262 // iteration. | |
| 20263 isCharSetRange &= char === "-"; | |
| 20264 char = this.peek(index); | |
| 20265 value += char; | |
| 20266 body += char; | |
| 20267 | |
| 20268 if (isCharSet) { | |
| 20269 if (char === "]") { | |
| 20270 if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") { | |
| 20271 isCharSet = false; | |
| 20272 } | |
| 20273 } else if (char === "-") { | |
| 20274 isCharSetRange = true; | |
| 20275 } | |
| 20276 } | |
| 20277 | |
| 20278 if (char === "\\") { | |
| 20279 escapeSequence = scanRegexpEscapeSequence(); | |
| 20280 | |
| 20281 if (isCharSet && (this.peek(index) === "-" || isCharSetRange) && | |
| 20282 reg.regexpCharClasses.test(escapeSequence)) { | |
| 20283 this.triggerAsync( | |
| 20284 "error", | |
| 20285 { | |
| 20286 code: "E016", | |
| 20287 line: this.line, | |
| 20288 character: this.char, | |
| 20289 data: [ "Character class used in range" ] | |
| 20290 }, | |
| 20291 checks, | |
| 20292 hasUFlag | |
| 20293 ); | |
| 20294 } | |
| 20295 | |
| 20296 continue; | |
| 20297 } | |
| 20298 | |
| 20299 if (isCharSet) { | |
| 20300 index += 1; | |
| 20301 continue; | |
| 20302 } | |
| 20303 | |
| 20304 if (char === "{" && !hasInvalidQuantifier) { | |
| 20305 hasInvalidQuantifier = !checkQuantifier(); | |
| 20306 } | |
| 20307 | |
| 20308 if (char === "[") { | |
| 20309 isCharSet = true; | |
| 20310 index += 1; | |
| 20311 continue; | |
| 20312 } else if (char === "(") { | |
| 20313 isGroup = true; | |
| 20314 | |
| 20315 if (this.peek(index + 1) === "?" && | |
| 20316 (this.peek(index + 2) === "=" || this.peek(index + 2) === "!")) { | |
| 20317 isQuantifiable = true; | |
| 20318 } | |
| 20319 } else if (char === ")") { | |
| 20320 if (isQuantifiable) { | |
| 20321 isQuantifiable = false; | |
| 20322 | |
| 20323 if (reg.regexpQuantifiers.test(this.peek(index + 1))) { | |
| 20324 this.triggerAsync( | |
| 20325 "error", | |
| 20326 { | |
| 20327 code: "E016", | |
| 20328 line: this.line, | |
| 20329 character: this.char, | |
| 20330 data: [ "Quantified quantifiable" ] | |
| 20331 }, | |
| 20332 checks, | |
| 20333 hasUFlag | |
| 20334 ); | |
| 20335 } | |
| 20336 } else { | |
| 20337 groupCount += 1; | |
| 20338 } | |
| 20339 | |
| 20340 isGroup = false; | |
| 20341 } else if (char === "/") { | |
| 20342 body = body.substr(0, body.length - 1); | |
| 20343 terminated = true; | |
| 20344 index += 1; | |
| 20345 break; | |
| 20346 } | |
| 20347 | |
| 20348 index += 1; | |
| 20349 } | |
| 20350 | |
| 20351 // A regular expression that was never closed is an | |
| 20352 // error from which we cannot recover. | |
| 20353 | |
| 20354 if (!terminated) { | |
| 20355 this.trigger("error", { | |
| 20356 code: "E015", | |
| 20357 line: this.line, | |
| 20358 character: this.from | |
| 20359 }); | |
| 20360 | |
| 20361 return void this.trigger("fatal", { | |
| 20362 line: this.line, | |
| 20363 from: this.from | |
| 20364 }); | |
| 20365 } | |
| 20366 | |
| 20367 // Parse flags (if any). | |
| 20368 | |
| 20369 while (index < length) { | |
| 20370 char = this.peek(index); | |
| 20371 if (!/[gimyus]/.test(char)) { | |
| 20372 break; | |
| 20373 } | |
| 20374 if (char === "y") { | |
| 20375 if (!state.inES6(true)) { | |
| 20376 this.triggerAsync( | |
| 20377 "warning", | |
| 20378 { | |
| 20379 code: "W119", | |
| 20380 line: this.line, | |
| 20381 character: this.char, | |
| 20382 data: [ "Sticky RegExp flag", "6" ] | |
| 20383 }, | |
| 20384 checks, | |
| 20385 function() { return true; } | |
| 20386 ); | |
| 20387 } | |
| 20388 } else if (char === "u") { | |
| 20389 if (!state.inES6(true)) { | |
| 20390 this.triggerAsync( | |
| 20391 "warning", | |
| 20392 { | |
| 20393 code: "W119", | |
| 20394 line: this.line, | |
| 20395 character: this.char, | |
| 20396 data: [ "Unicode RegExp flag", "6" ] | |
| 20397 }, | |
| 20398 checks, | |
| 20399 function() { return true; } | |
| 20400 ); | |
| 20401 } | |
| 20402 | |
| 20403 var hasInvalidEscape = (function(groupReferences, groupCount, escapedChars, reg) { | |
| 20404 var hasInvalidGroup = groupReferences.some(function(groupReference) { | |
| 20405 if (groupReference > groupCount) { | |
| 20406 return true; | |
| 20407 } | |
| 20408 }); | |
| 20409 | |
| 20410 if (hasInvalidGroup) { | |
| 20411 return true; | |
| 20412 } | |
| 20413 | |
| 20414 return !escapedChars.split("").every(function(escapedChar) { | |
| 20415 return escapedChar === "u" || | |
| 20416 escapedChar === "/" || | |
| 20417 escapedChar === "0" || | |
| 20418 reg.regexpControlEscapes.test(escapedChar) || | |
| 20419 reg.regexpCharClasses.test(escapedChar) || | |
| 20420 reg.regexpSyntaxChars.test(escapedChar); | |
| 20421 }); | |
| 20422 }(groupReferences, groupCount, escapedChars, reg)); | |
| 20423 | |
| 20424 if (hasInvalidEscape) { | |
| 20425 malformedDesc = "Invalid escape"; | |
| 20426 } else if (hasInvalidQuantifier) { | |
| 20427 malformedDesc = "Invalid quantifier"; | |
| 20428 } | |
| 20429 | |
| 20430 body = translateUFlag(body); | |
| 20431 } else if (char === "s") { | |
| 20432 if (!state.inES9()) { | |
| 20433 this.triggerAsync( | |
| 20434 "warning", | |
| 20435 { | |
| 20436 code: "W119", | |
| 20437 line: this.line, | |
| 20438 character: this.char, | |
| 20439 data: [ "DotAll RegExp flag", "9" ] | |
| 20440 }, | |
| 20441 checks, | |
| 20442 function() { return true; } | |
| 20443 ); | |
| 20444 } | |
| 20445 if (value.indexOf("s") > -1) { | |
| 20446 malformedDesc = "Duplicate RegExp flag"; | |
| 20447 } | |
| 20448 } else { | |
| 20449 es5Flags += char; | |
| 20450 } | |
| 20451 | |
| 20452 if (allFlags.indexOf(char) > -1) { | |
| 20453 malformedDesc = "Duplicate RegExp flag"; | |
| 20454 } | |
| 20455 allFlags += char; | |
| 20456 | |
| 20457 value += char; | |
| 20458 allFlags += char; | |
| 20459 index += 1; | |
| 20460 } | |
| 20461 | |
| 20462 if (allFlags.indexOf("u") === -1) { | |
| 20463 this.triggerAsync("warning", { | |
| 20464 code: "W147", | |
| 20465 line: this.line, | |
| 20466 character: this.char | |
| 20467 }, checks, function() { return state.option.regexpu; }); | |
| 20468 } | |
| 20469 | |
| 20470 // Check regular expression for correctness. | |
| 20471 | |
| 20472 try { | |
| 20473 new RegExp(body, es5Flags); | |
| 20474 } catch (err) { | |
| 20475 /** | |
| 20476 * Because JSHint relies on the current engine's RegExp parser to | |
| 20477 * validate RegExp literals, the description (exposed as the "data" | |
| 20478 * property on the error object) is platform dependent. | |
| 20479 */ | |
| 20480 malformedDesc = err.message; | |
| 20481 } | |
| 20482 | |
| 20483 if (malformedDesc) { | |
| 20484 malformed = true; | |
| 20485 this.trigger("error", { | |
| 20486 code: "E016", | |
| 20487 line: this.line, | |
| 20488 character: this.char, | |
| 20489 data: [ malformedDesc ] | |
| 20490 }); | |
| 20491 } else if (allFlags.indexOf("s") > -1 && !reg.regexpDot.test(body)) { | |
| 20492 this.trigger("warning", { | |
| 20493 code: "W148", | |
| 20494 line: this.line, | |
| 20495 character: this.char | |
| 20496 }); | |
| 20497 } | |
| 20498 | |
| 20499 return { | |
| 20500 type: Token.RegExp, | |
| 20501 value: value, | |
| 20502 isMalformed: malformed | |
| 20503 }; | |
| 20504 }, | |
| 20505 | |
| 20506 /* | |
| 20507 * Scan for any occurrence of non-breaking spaces. Non-breaking spaces | |
| 20508 * can be mistakenly typed on OS X with option-space. Non UTF-8 web | |
| 20509 * pages with non-breaking pages produce syntax errors. | |
| 20510 */ | |
| 20511 scanNonBreakingSpaces: function() { | |
| 20512 return state.option.nonbsp ? | |
| 20513 this.input.search(/(\u00A0)/) : -1; | |
| 20514 }, | |
| 20515 | |
| 20516 /* | |
| 20517 * Produce the next raw token or return 'null' if no tokens can be matched. | |
| 20518 * This method skips over all space characters. | |
| 20519 */ | |
| 20520 next: function(checks) { | |
| 20521 this.from = this.char; | |
| 20522 | |
| 20523 // Move to the next non-space character. | |
| 20524 while (reg.whitespace.test(this.peek())) { | |
| 20525 this.from += 1; | |
| 20526 this.skip(); | |
| 20527 } | |
| 20528 | |
| 20529 // Methods that work with multi-line structures and move the | |
| 20530 // character pointer. | |
| 20531 | |
| 20532 var match = this.scanComments(checks) || | |
| 20533 this.scanStringLiteral(checks) || | |
| 20534 this.scanTemplateLiteral(checks); | |
| 20535 | |
| 20536 if (match) { | |
| 20537 return match; | |
| 20538 } | |
| 20539 | |
| 20540 // Methods that don't move the character pointer. | |
| 20541 | |
| 20542 match = | |
| 20543 this.scanRegExp(checks) || | |
| 20544 this.scanPunctuator() || | |
| 20545 this.scanKeyword() || | |
| 20546 this.scanIdentifier(checks) || | |
| 20547 this.scanNumericLiteral(checks); | |
| 20548 | |
| 20549 if (match) { | |
| 20550 this.skip(match.tokenLength || match.value.length); | |
| 20551 return match; | |
| 20552 } | |
| 20553 | |
| 20554 // No token could be matched, give up. | |
| 20555 | |
| 20556 return null; | |
| 20557 }, | |
| 20558 | |
| 20559 /* | |
| 20560 * Switch to the next line and reset all char pointers. Once | |
| 20561 * switched, this method also checks for other minor warnings. | |
| 20562 */ | |
| 20563 nextLine: function(checks) { | |
| 20564 var char; | |
| 20565 | |
| 20566 if (this.line >= this.getLines().length) { | |
| 20567 return false; | |
| 20568 } | |
| 20569 | |
| 20570 this.input = this.getLines()[this.line]; | |
| 20571 this.line += 1; | |
| 20572 this.char = 1; | |
| 20573 this.from = 1; | |
| 20574 | |
| 20575 var inputTrimmed = this.input.trim(); | |
| 20576 | |
| 20577 var startsWith = function() { | |
| 20578 return _.some(arguments, function(prefix) { | |
| 20579 return inputTrimmed.indexOf(prefix) === 0; | |
| 20580 }); | |
| 20581 }; | |
| 20582 | |
| 20583 var endsWith = function() { | |
| 20584 return _.some(arguments, function(suffix) { | |
| 20585 return inputTrimmed.indexOf(suffix, inputTrimmed.length - suffix.length) !== -1; | |
| 20586 }); | |
| 20587 }; | |
| 20588 | |
| 20589 // If we are ignoring linter errors, replace the input with empty string | |
| 20590 // if it doesn't already at least start or end a multi-line comment | |
| 20591 if (this.ignoringLinterErrors === true) { | |
| 20592 if (!startsWith("/*", "//") && !(this.inComment && endsWith("*/"))) { | |
| 20593 this.input = ""; | |
| 20594 } | |
| 20595 } | |
| 20596 | |
| 20597 char = this.scanNonBreakingSpaces(); | |
| 20598 if (char >= 0) { | |
| 20599 this.triggerAsync( | |
| 20600 "warning", | |
| 20601 { code: "W125", line: this.line, character: char + 1 }, | |
| 20602 checks, | |
| 20603 function() { return true; } | |
| 20604 ); | |
| 20605 } | |
| 20606 | |
| 20607 this.input = this.input.replace(/\t/g, state.tab); | |
| 20608 | |
| 20609 // If there is a limit on line length, warn when lines get too | |
| 20610 // long. | |
| 20611 | |
| 20612 if (!this.ignoringLinterErrors && state.option.maxlen && | |
| 20613 state.option.maxlen < this.input.length) { | |
| 20614 var inComment = this.inComment || | |
| 20615 startsWith.call(inputTrimmed, "//") || | |
| 20616 startsWith.call(inputTrimmed, "/*"); | |
| 20617 | |
| 20618 var shouldTriggerError = !inComment || !reg.maxlenException.test(inputTrimmed); | |
| 20619 | |
| 20620 if (shouldTriggerError) { | |
| 20621 this.triggerAsync( | |
| 20622 "warning", | |
| 20623 { code: "W101", line: this.line, character: this.input.length }, | |
| 20624 checks, | |
| 20625 function() { return true; } | |
| 20626 ); | |
| 20627 } | |
| 20628 } | |
| 20629 | |
| 20630 return true; | |
| 20631 }, | |
| 20632 | |
| 20633 /* | |
| 20634 * Produce the next token. This function is called by advance() to get | |
| 20635 * the next token. It returns a token in a JSLint-compatible format. | |
| 20636 */ | |
| 20637 token: function() { | |
| 20638 /*jshint loopfunc:true */ | |
| 20639 var checks = asyncTrigger(); | |
| 20640 var token; | |
| 20641 | |
| 20642 // Produce a token object. | |
| 20643 var create = function(type, value, isProperty, token) { | |
| 20644 /*jshint validthis:true */ | |
| 20645 var obj; | |
| 20646 | |
| 20647 if (type !== "(endline)" && type !== "(end)") { | |
| 20648 this.prereg = false; | |
| 20649 } | |
| 20650 | |
| 20651 if (type === "(punctuator)") { | |
| 20652 switch (value) { | |
| 20653 case ".": | |
| 20654 case ")": | |
| 20655 case "~": | |
| 20656 case "#": | |
| 20657 case "]": | |
| 20658 case "}": | |
| 20659 case "++": | |
| 20660 case "--": | |
| 20661 this.prereg = false; | |
| 20662 break; | |
| 20663 default: | |
| 20664 this.prereg = true; | |
| 20665 } | |
| 20666 | |
| 20667 obj = Object.create(state.syntax[value] || state.syntax["(error)"]); | |
| 20668 } | |
| 20669 | |
| 20670 if (type === "(identifier)") { | |
| 20671 if (value === "return" || value === "case" || value === "yield" || | |
| 20672 value === "typeof" || value === "instanceof" || value === "void" || | |
| 20673 value === "await" || value === "new" || value === "delete" || | |
| 20674 value === "default" || value === "extends") { | |
| 20675 this.prereg = true; | |
| 20676 } | |
| 20677 | |
| 20678 if (_.has(state.syntax, value)) { | |
| 20679 obj = Object.create(state.syntax[value] || state.syntax["(error)"]); | |
| 20680 } | |
| 20681 } | |
| 20682 | |
| 20683 if (type === "(template)" || type === "(template middle)") { | |
| 20684 this.prereg = true; | |
| 20685 } | |
| 20686 | |
| 20687 if (!obj) { | |
| 20688 obj = Object.create(state.syntax[type]); | |
| 20689 } | |
| 20690 | |
| 20691 obj.identifier = (type === "(identifier)"); | |
| 20692 obj.type = obj.type || type; | |
| 20693 obj.value = value; | |
| 20694 obj.line = this.line; | |
| 20695 obj.character = this.char; | |
| 20696 obj.from = this.from; | |
| 20697 if (obj.identifier && token) obj.raw_text = token.text || token.value; | |
| 20698 if (token && token.startLine && token.startLine !== this.line) { | |
| 20699 obj.startLine = token.startLine; | |
| 20700 } | |
| 20701 if (token && token.context) { | |
| 20702 // Context of current token | |
| 20703 obj.context = token.context; | |
| 20704 } | |
| 20705 if (token && token.depth) { | |
| 20706 // Nested template depth | |
| 20707 obj.depth = token.depth; | |
| 20708 } | |
| 20709 if (token && token.isUnclosed) { | |
| 20710 // Mark token as unclosed string / template literal | |
| 20711 obj.isUnclosed = token.isUnclosed; | |
| 20712 } | |
| 20713 | |
| 20714 if (isProperty && obj.identifier) { | |
| 20715 obj.isProperty = isProperty; | |
| 20716 } | |
| 20717 | |
| 20718 obj.check = checks.check; | |
| 20719 | |
| 20720 return obj; | |
| 20721 }.bind(this); | |
| 20722 | |
| 20723 for (;;) { | |
| 20724 if (!this.input.length) { | |
| 20725 if (this.nextLine(checks)) { | |
| 20726 return create("(endline)", ""); | |
| 20727 } | |
| 20728 | |
| 20729 if (this.exhausted) { | |
| 20730 return null; | |
| 20731 } | |
| 20732 | |
| 20733 this.exhausted = true; | |
| 20734 return create("(end)", ""); | |
| 20735 } | |
| 20736 | |
| 20737 token = this.next(checks); | |
| 20738 | |
| 20739 if (!token) { | |
| 20740 if (this.input.length) { | |
| 20741 // Unexpected character. | |
| 20742 this.trigger("error", { | |
| 20743 code: "E024", | |
| 20744 line: this.line, | |
| 20745 character: this.char, | |
| 20746 data: [ this.peek() ] | |
| 20747 }); | |
| 20748 | |
| 20749 this.input = ""; | |
| 20750 } | |
| 20751 | |
| 20752 continue; | |
| 20753 } | |
| 20754 | |
| 20755 switch (token.type) { | |
| 20756 case Token.StringLiteral: | |
| 20757 this.triggerAsync("String", { | |
| 20758 line: this.line, | |
| 20759 char: this.char, | |
| 20760 from: this.from, | |
| 20761 startLine: token.startLine, | |
| 20762 startChar: token.startChar, | |
| 20763 value: token.value, | |
| 20764 quote: token.quote | |
| 20765 }, checks, function() { return true; }); | |
| 20766 | |
| 20767 return create("(string)", token.value, null, token); | |
| 20768 | |
| 20769 case Token.TemplateHead: | |
| 20770 this.trigger("TemplateHead", { | |
| 20771 line: this.line, | |
| 20772 char: this.char, | |
| 20773 from: this.from, | |
| 20774 startLine: token.startLine, | |
| 20775 startChar: token.startChar, | |
| 20776 value: token.value | |
| 20777 }); | |
| 20778 return create("(template)", token.value, null, token); | |
| 20779 | |
| 20780 case Token.TemplateMiddle: | |
| 20781 this.trigger("TemplateMiddle", { | |
| 20782 line: this.line, | |
| 20783 char: this.char, | |
| 20784 from: this.from, | |
| 20785 startLine: token.startLine, | |
| 20786 startChar: token.startChar, | |
| 20787 value: token.value | |
| 20788 }); | |
| 20789 return create("(template middle)", token.value, null, token); | |
| 20790 | |
| 20791 case Token.TemplateTail: | |
| 20792 this.trigger("TemplateTail", { | |
| 20793 line: this.line, | |
| 20794 char: this.char, | |
| 20795 from: this.from, | |
| 20796 startLine: token.startLine, | |
| 20797 startChar: token.startChar, | |
| 20798 value: token.value | |
| 20799 }); | |
| 20800 return create("(template tail)", token.value, null, token); | |
| 20801 | |
| 20802 case Token.NoSubstTemplate: | |
| 20803 this.trigger("NoSubstTemplate", { | |
| 20804 line: this.line, | |
| 20805 char: this.char, | |
| 20806 from: this.from, | |
| 20807 startLine: token.startLine, | |
| 20808 startChar: token.startChar, | |
| 20809 value: token.value | |
| 20810 }); | |
| 20811 return create("(no subst template)", token.value, null, token); | |
| 20812 | |
| 20813 case Token.Identifier: | |
| 20814 this.triggerAsync("Identifier", { | |
| 20815 line: this.line, | |
| 20816 char: this.char, | |
| 20817 from: this.from, | |
| 20818 name: token.value, | |
| 20819 raw_name: token.text, | |
| 20820 isProperty: state.tokens.curr.id === "." | |
| 20821 }, checks, function() { return true; }); | |
| 20822 | |
| 20823 /* falls through */ | |
| 20824 case Token.Keyword: | |
| 20825 return create("(identifier)", token.value, state.tokens.curr.id === ".", token); | |
| 20826 | |
| 20827 case Token.NumericLiteral: | |
| 20828 if (token.isMalformed) { | |
| 20829 this.trigger("error", { | |
| 20830 code: "E067", | |
| 20831 line: this.line, | |
| 20832 character: this.char, | |
| 20833 data: [ token.value ] | |
| 20834 }); | |
| 20835 } | |
| 20836 | |
| 20837 this.triggerAsync("warning", { | |
| 20838 code: "W114", | |
| 20839 line: this.line, | |
| 20840 character: this.char, | |
| 20841 data: [ "0x-" ] | |
| 20842 }, checks, function() { return token.base === 16 && state.jsonMode; }); | |
| 20843 | |
| 20844 this.triggerAsync("warning", { | |
| 20845 code: "W115", | |
| 20846 line: this.line, | |
| 20847 character: this.char | |
| 20848 }, checks, function() { | |
| 20849 return state.isStrict() && token.base === 8 && token.isLegacy; | |
| 20850 }); | |
| 20851 | |
| 20852 this.triggerAsync("error", { | |
| 20853 code: "E068", | |
| 20854 line: this.line, | |
| 20855 character: this.char | |
| 20856 }, checks, function() { | |
| 20857 return state.isStrict() && token.isNonOctal; | |
| 20858 }); | |
| 20859 | |
| 20860 this.trigger("Number", { | |
| 20861 line: this.line, | |
| 20862 char: this.char, | |
| 20863 from: this.from, | |
| 20864 value: token.value, | |
| 20865 base: token.base, | |
| 20866 isMalformed: token.isMalformed | |
| 20867 }); | |
| 20868 | |
| 20869 return create("(number)", token.value); | |
| 20870 | |
| 20871 case Token.RegExp: | |
| 20872 return create("(regexp)", token.value); | |
| 20873 | |
| 20874 case Token.Comment: | |
| 20875 if (token.isSpecial) { | |
| 20876 return { | |
| 20877 id: '(comment)', | |
| 20878 value: token.value, | |
| 20879 body: token.body, | |
| 20880 type: token.commentType, | |
| 20881 isSpecial: token.isSpecial, | |
| 20882 line: this.line, | |
| 20883 character: this.char, | |
| 20884 from: this.from | |
| 20885 }; | |
| 20886 } | |
| 20887 | |
| 20888 break; | |
| 20889 | |
| 20890 default: | |
| 20891 return create("(punctuator)", token.value); | |
| 20892 } | |
| 20893 } | |
| 20894 } | |
| 20895 }; | |
| 20896 | |
| 20897 exports.Lexer = Lexer; | |
| 20898 exports.Context = Context; | |
| 20899 | |
| 20900 },{"../data/ascii-identifier-data.js":1,"../data/es5-identifier-names.js":2,"../data/non-ascii-identifier-part-only.js":3,"../data/non-ascii-identifier-start.js":4,"./reg.js":22,"./state.js":24,"events":9,"lodash":16}],18:[function(require,module,exports){ | |
| 20901 "use strict"; | |
| 20902 | |
| 20903 var _ = require("lodash"); | |
| 20904 | |
| 20905 var errors = { | |
| 20906 // JSHint options | |
| 20907 E001: "Bad {a}option: '{b}'.", | |
| 20908 E002: "Bad option value.", | |
| 20909 | |
| 20910 // JSHint input | |
| 20911 E003: "Expected a JSON value.", | |
| 20912 E004: "Input is neither a string nor an array of strings.", | |
| 20913 E005: "Input is empty.", | |
| 20914 E006: "Unexpected early end of program.", | |
| 20915 | |
| 20916 // Strict mode | |
| 20917 E007: "Missing \"use strict\" statement.", | |
| 20918 E008: "Strict violation.", | |
| 20919 E009: "Option 'validthis' can't be used in a global scope.", | |
| 20920 E010: "'with' is not allowed in strict mode.", | |
| 20921 | |
| 20922 // Constants | |
| 20923 E011: "'{a}' has already been declared.", | |
| 20924 E012: "const '{a}' is initialized to 'undefined'.", | |
| 20925 E013: "Attempting to override '{a}' which is a constant.", | |
| 20926 | |
| 20927 // Regular expressions | |
| 20928 E014: "A regular expression literal can be confused with '/='.", | |
| 20929 E015: "Unclosed regular expression.", | |
| 20930 E016: "Invalid regular expression.", | |
| 20931 | |
| 20932 // Tokens | |
| 20933 E017: "Unclosed comment.", | |
| 20934 E018: "Unbegun comment.", | |
| 20935 E019: "Unmatched '{a}'.", | |
| 20936 E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.", | |
| 20937 E021: "Expected '{a}' and instead saw '{b}'.", | |
| 20938 E022: "Line breaking error '{a}'.", | |
| 20939 E023: "Missing '{a}'.", | |
| 20940 E024: "Unexpected '{a}'.", | |
| 20941 E025: "Missing ':' on a case clause.", | |
| 20942 E026: "Missing '}' to match '{' from line {a}.", | |
| 20943 E027: "Missing ']' to match '[' from line {a}.", | |
| 20944 E028: "Illegal comma.", | |
| 20945 E029: "Unclosed string.", | |
| 20946 | |
| 20947 // Everything else | |
| 20948 E030: "Expected an identifier and instead saw '{a}'.", | |
| 20949 E031: "Bad assignment.", // FIXME: Rephrase | |
| 20950 E032: "Expected a small integer or 'false' and instead saw '{a}'.", | |
| 20951 E033: "Expected an operator and instead saw '{a}'.", | |
| 20952 E034: "get/set are ES5 features.", | |
| 20953 E035: "Missing property name.", | |
| 20954 E036: "Expected to see a statement and instead saw a block.", | |
| 20955 E037: null, | |
| 20956 E038: null, | |
| 20957 E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.", | |
| 20958 E040: "Each value should have its own case label.", | |
| 20959 E041: "Unrecoverable syntax error.", | |
| 20960 E042: "Stopping.", | |
| 20961 E043: "Too many errors.", | |
| 20962 E044: null, | |
| 20963 E045: "Invalid for each loop.", | |
| 20964 E046: "Yield expressions may only occur within generator functions.", | |
| 20965 E047: null, | |
| 20966 E048: "{a} declaration not directly within block.", | |
| 20967 E049: "A {a} cannot be named '{b}'.", | |
| 20968 E050: "Mozilla requires the yield expression to be parenthesized here.", | |
| 20969 E051: null, | |
| 20970 E052: "Unclosed template literal.", | |
| 20971 E053: "{a} declarations are only allowed at the top level of module scope.", | |
| 20972 E054: "Class properties must be methods. Expected '(' but instead saw '{a}'.", | |
| 20973 E055: "The '{a}' option cannot be set after any executable code.", | |
| 20974 E056: "'{a}' was used before it was declared, which is illegal for '{b}' variables.", | |
| 20975 E057: "Invalid meta property: '{a}.{b}'.", | |
| 20976 E058: "Missing semicolon.", | |
| 20977 E059: "Incompatible values for the '{a}' and '{b}' linting options.", | |
| 20978 E060: "Non-callable values cannot be used as the second operand to instanceof.", | |
| 20979 E061: "Invalid position for 'yield' expression (consider wrapping in parenthesis).", | |
| 20980 E062: "Rest parameter does not a support default value.", | |
| 20981 E063: "Super property may only be used within method bodies.", | |
| 20982 E064: "Super call may only be used within class method bodies.", | |
| 20983 E065: "Functions defined outside of strict mode with non-simple parameter lists may not " + | |
| 20984 "enable strict mode.", | |
| 20985 E066: "Asynchronous iteration is only available with for-of loops.", | |
| 20986 E067: "Malformed numeric literal: '{a}'.", | |
| 20987 E068: "Decimals with leading zeros are not allowed in strict mode." | |
| 20988 }; | |
| 20989 | |
| 20990 var warnings = { | |
| 20991 W001: "'hasOwnProperty' is a really bad name.", | |
| 20992 W002: "Value of '{a}' may be overwritten in IE 8 and earlier.", | |
| 20993 W003: "'{a}' was used before it was defined.", | |
| 20994 W004: "'{a}' is already defined.", | |
| 20995 W005: "A dot following a number can be confused with a decimal point.", | |
| 20996 W006: "Confusing minuses.", | |
| 20997 W007: "Confusing plusses.", | |
| 20998 W008: "A leading decimal point can be confused with a dot: '{a}'.", | |
| 20999 W009: "The array literal notation [] is preferable.", | |
| 21000 W010: "The object literal notation {} is preferable.", | |
| 21001 W011: null, | |
| 21002 W012: null, | |
| 21003 W013: null, | |
| 21004 W014: "Misleading line break before '{a}'; readers may interpret this as an expression boundary.", | |
| 21005 W015: null, | |
| 21006 W016: "Unexpected use of '{a}'.", | |
| 21007 W017: "Bad operand.", | |
| 21008 W018: "Confusing use of '{a}'.", | |
| 21009 W019: "Use the isNaN function to compare with NaN.", | |
| 21010 W020: "Read only.", | |
| 21011 W021: "Reassignment of '{a}', which is a {b}. " + | |
| 21012 "Use 'var' or 'let' to declare bindings that may change.", | |
| 21013 W022: "Do not assign to the exception parameter.", | |
| 21014 W023: null, | |
| 21015 W024: "Expected an identifier and instead saw '{a}' (a reserved word).", | |
| 21016 W025: "Missing name in function declaration.", | |
| 21017 W026: "Inner functions should be listed at the top of the outer function.", | |
| 21018 W027: "Unreachable '{a}' after '{b}'.", | |
| 21019 W028: "Label '{a}' on {b} statement.", | |
| 21020 W030: "Expected an assignment or function call and instead saw an expression.", | |
| 21021 W031: "Do not use 'new' for side effects.", | |
| 21022 W032: "Unnecessary semicolon.", | |
| 21023 W033: "Missing semicolon.", | |
| 21024 W034: "Unnecessary directive \"{a}\".", | |
| 21025 W035: "Empty block.", | |
| 21026 W036: "Unexpected /*member '{a}'.", | |
| 21027 W037: "'{a}' is a statement label.", | |
| 21028 W038: "'{a}' used out of scope.", | |
| 21029 W039: null, | |
| 21030 W040: "If a strict mode function is executed using function invocation, " + | |
| 21031 "its 'this' value will be undefined.", | |
| 21032 W041: null, | |
| 21033 W042: "Avoid EOL escaping.", | |
| 21034 W043: "Bad escaping of EOL. Use option multistr if needed.", | |
| 21035 W044: "Bad or unnecessary escaping.", /* TODO(caitp): remove W044 */ | |
| 21036 W045: "Value described by numeric literal cannot be accurately " + | |
| 21037 "represented with a number value: '{a}'.", | |
| 21038 W046: "Don't use extra leading zeros '{a}'.", | |
| 21039 W047: "A trailing decimal point can be confused with a dot: '{a}'.", | |
| 21040 W048: "Unexpected control character in regular expression.", | |
| 21041 W049: "Unexpected escaped character '{a}' in regular expression.", | |
| 21042 W050: "JavaScript URL.", | |
| 21043 W051: "Variables should not be deleted.", | |
| 21044 W052: "Unexpected '{a}'.", | |
| 21045 W053: "Do not use {a} as a constructor.", | |
| 21046 W054: "The Function constructor is a form of eval.", | |
| 21047 W055: "A constructor name should start with an uppercase letter.", | |
| 21048 W056: "Bad constructor.", | |
| 21049 W057: "Weird construction. Is 'new' necessary?", | |
| 21050 W058: "Missing '()' invoking a constructor.", | |
| 21051 W059: "Avoid arguments.{a}.", | |
| 21052 W060: "document.write can be a form of eval.", | |
| 21053 W061: "eval can be harmful.", | |
| 21054 W062: "Wrap an immediate function invocation in parens " + | |
| 21055 "to assist the reader in understanding that the expression " + | |
| 21056 "is the result of a function, and not the function itself.", | |
| 21057 W063: "Math is not a function.", | |
| 21058 W064: "Missing 'new' prefix when invoking a constructor.", | |
| 21059 W065: "Missing radix parameter.", | |
| 21060 W066: "Implied eval. Consider passing a function instead of a string.", | |
| 21061 W067: "Unorthodox function invocation.", | |
| 21062 W068: "Wrapping non-IIFE function literals in parens is unnecessary.", | |
| 21063 W069: "['{a}'] is better written in dot notation.", | |
| 21064 W070: "Extra comma. (it breaks older versions of IE)", | |
| 21065 W071: "This function has too many statements. ({a})", | |
| 21066 W072: "This function has too many parameters. ({a})", | |
| 21067 W073: "Blocks are nested too deeply. ({a})", | |
| 21068 W074: "This function's cyclomatic complexity is too high. ({a})", | |
| 21069 W075: "Duplicate {a} '{b}'.", | |
| 21070 W076: "Unexpected parameter '{a}' in get {b} function.", | |
| 21071 W077: "Expected a single parameter in set {a} function.", | |
| 21072 W078: "Setter is defined without getter.", | |
| 21073 W079: "Redefinition of '{a}'.", | |
| 21074 W080: "It's not necessary to initialize '{a}' to 'undefined'.", | |
| 21075 W081: null, | |
| 21076 W082: "Function declarations should not be placed in blocks. " + | |
| 21077 "Use a function expression or move the statement to the top of " + | |
| 21078 "the outer function.", | |
| 21079 W083: "Functions declared within loops referencing an outer scoped " + | |
| 21080 "variable may lead to confusing semantics. ({a})", | |
| 21081 W084: "Expected a conditional expression and instead saw an assignment.", | |
| 21082 W085: "Don't use 'with'.", | |
| 21083 W086: "Expected a 'break' statement before '{a}'.", | |
| 21084 W087: "Forgotten 'debugger' statement?", | |
| 21085 W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.", | |
| 21086 W089: "The body of a for in should be wrapped in an if statement to filter " + | |
| 21087 "unwanted properties from the prototype.", | |
| 21088 W090: "'{a}' is not a statement label.", | |
| 21089 W091: null, | |
| 21090 W093: "Did you mean to return a conditional instead of an assignment?", | |
| 21091 W094: "Unexpected comma.", | |
| 21092 W095: "Expected a string and instead saw {a}.", | |
| 21093 W096: "The '{a}' key may produce unexpected results.", | |
| 21094 W097: "Use the function form of \"use strict\".", | |
| 21095 W098: "'{a}' is defined but never used.", | |
| 21096 W099: null, | |
| 21097 W100: null, | |
| 21098 W101: "Line is too long.", | |
| 21099 W102: null, | |
| 21100 W103: "The '{a}' property is deprecated.", | |
| 21101 W104: "'{a}' is available in ES{b} (use 'esversion: {b}') or Mozilla JS extensions (use moz).", | |
| 21102 W105: null, | |
| 21103 W106: "Identifier '{a}' is not in camel case.", | |
| 21104 W107: "Script URL.", | |
| 21105 W108: "Strings must use doublequote.", | |
| 21106 W109: "Strings must use singlequote.", | |
| 21107 W110: "Mixed double and single quotes.", | |
| 21108 W112: "Unclosed string.", | |
| 21109 W113: "Control character in string: {a}.", | |
| 21110 W114: "Avoid {a}.", | |
| 21111 W115: "Octal literals are not allowed in strict mode.", | |
| 21112 W116: "Expected '{a}' and instead saw '{b}'.", | |
| 21113 W117: "'{a}' is not defined.", | |
| 21114 W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).", | |
| 21115 W119: "'{a}' is only available in ES{b} (use 'esversion: {b}').", | |
| 21116 W120: "You might be leaking a variable ({a}) here.", | |
| 21117 W121: "Extending prototype of native object: '{a}'.", | |
| 21118 W122: "Invalid typeof value '{a}'", | |
| 21119 W123: "'{a}' is already defined in outer scope.", | |
| 21120 W124: "A generator function should contain at least one yield expression.", | |
| 21121 W125: "This line contains non-breaking spaces: http://jshint.com/docs/options/#nonbsp", | |
| 21122 W126: "Unnecessary grouping operator.", | |
| 21123 W127: "Unexpected use of a comma operator.", | |
| 21124 W128: "Empty array elements require elision=true.", | |
| 21125 W129: "'{a}' is defined in a future version of JavaScript. Use a " + | |
| 21126 "different variable name to avoid migration issues.", | |
| 21127 W130: "Invalid element after rest element.", | |
| 21128 W131: "Invalid parameter after rest parameter.", | |
| 21129 W132: "`var` declarations are forbidden. Use `let` or `const` instead.", | |
| 21130 W133: "Invalid for-{a} loop left-hand-side: {b}.", | |
| 21131 W134: "The '{a}' option is only available when linting ECMAScript {b} code.", | |
| 21132 W135: "{a} may not be supported by non-browser environments.", | |
| 21133 W136: "'{a}' must be in function scope.", | |
| 21134 W137: "Empty destructuring: this is unnecessary and can be removed.", | |
| 21135 W138: "Regular parameters should not come after default parameters.", | |
| 21136 W139: "Function expressions should not be used as the second operand to instanceof.", | |
| 21137 W140: "Missing comma.", | |
| 21138 W141: "Empty {a}: this is unnecessary and can be removed.", | |
| 21139 W142: "Empty {a}: consider replacing with `import '{b}';`.", | |
| 21140 W143: "Assignment to properties of a mapped arguments object may cause " + | |
| 21141 "unexpected changes to formal parameters.", | |
| 21142 W144: "'{a}' is a non-standard language feature. Enable it using the '{b}' unstable option.", | |
| 21143 W145: "Superfluous 'case' clause.", | |
| 21144 W146: "Unnecessary `await` expression.", | |
| 21145 W147: "Regular expressions should include the 'u' flag.", | |
| 21146 W148: "Unnecessary RegExp 's' flag." | |
| 21147 }; | |
| 21148 | |
| 21149 var info = { | |
| 21150 I001: "Comma warnings can be turned off with 'laxcomma'.", | |
| 21151 I002: null, | |
| 21152 I003: "ES5 option is now set per default" | |
| 21153 }; | |
| 21154 | |
| 21155 exports.errors = {}; | |
| 21156 exports.warnings = {}; | |
| 21157 exports.info = {}; | |
| 21158 | |
| 21159 _.each(errors, function(desc, code) { | |
| 21160 exports.errors[code] = { code: code, desc: desc }; | |
| 21161 }); | |
| 21162 | |
| 21163 _.each(warnings, function(desc, code) { | |
| 21164 exports.warnings[code] = { code: code, desc: desc }; | |
| 21165 }); | |
| 21166 | |
| 21167 _.each(info, function(desc, code) { | |
| 21168 exports.info[code] = { code: code, desc: desc }; | |
| 21169 }); | |
| 21170 | |
| 21171 },{"lodash":16}],19:[function(require,module,exports){ | |
| 21172 /** | |
| 21173 * The NameStack class is used to approximate function name inference as | |
| 21174 * introduced by ECMAScript 2015. In that edition, the `name` property of | |
| 21175 * function objects is set according to the function's syntactic form. For | |
| 21176 * certain forms, this value depends on values available to the runtime during | |
| 21177 * execution. For example: | |
| 21178 * | |
| 21179 * var fnName = function() {}; | |
| 21180 * | |
| 21181 * In the program code above, the function object's `name` property is set to | |
| 21182 * `"fnName"` during execution. | |
| 21183 * | |
| 21184 * This general "name inference" behavior extends to a number of additional | |
| 21185 * syntactic forms, not all of which can be implemented statically. `NameStack` | |
| 21186 * is a support class representing a "best-effort" attempt to implement the | |
| 21187 * specified behavior in cases where this may be done statically. | |
| 21188 * | |
| 21189 * For more information on this behavior, see the following blog post: | |
| 21190 * https://bocoup.com/blog/whats-in-a-function-name | |
| 21191 */ | |
| 21192 "use strict"; | |
| 21193 | |
| 21194 function NameStack() { | |
| 21195 this._stack = []; | |
| 21196 } | |
| 21197 | |
| 21198 Object.defineProperty(NameStack.prototype, "length", { | |
| 21199 get: function() { | |
| 21200 return this._stack.length; | |
| 21201 } | |
| 21202 }); | |
| 21203 | |
| 21204 /** | |
| 21205 * Create a new entry in the stack. Useful for tracking names across | |
| 21206 * expressions. | |
| 21207 */ | |
| 21208 NameStack.prototype.push = function() { | |
| 21209 this._stack.push(null); | |
| 21210 }; | |
| 21211 | |
| 21212 /** | |
| 21213 * Discard the most recently-created name on the stack. | |
| 21214 */ | |
| 21215 NameStack.prototype.pop = function() { | |
| 21216 this._stack.pop(); | |
| 21217 }; | |
| 21218 | |
| 21219 /** | |
| 21220 * Update the most recent name on the top of the stack. | |
| 21221 * | |
| 21222 * @param {object} token The token to consider as the source for the most | |
| 21223 * recent name. | |
| 21224 */ | |
| 21225 NameStack.prototype.set = function(token) { | |
| 21226 this._stack[this.length - 1] = token; | |
| 21227 }; | |
| 21228 | |
| 21229 /** | |
| 21230 * Generate a string representation of the most recent name. | |
| 21231 * | |
| 21232 * @returns {string} | |
| 21233 */ | |
| 21234 NameStack.prototype.infer = function() { | |
| 21235 var nameToken = this._stack[this.length - 1]; | |
| 21236 var prefix = ""; | |
| 21237 var type; | |
| 21238 | |
| 21239 // During expected operation, the topmost entry on the stack will only | |
| 21240 // reflect the current function's name when the function is declared without | |
| 21241 // the `function` keyword (i.e. for in-line accessor methods). In other | |
| 21242 // cases, the `function` expression itself will introduce an empty entry on | |
| 21243 // the top of the stack, and this should be ignored. | |
| 21244 if (!nameToken || nameToken.type === "class") { | |
| 21245 nameToken = this._stack[this.length - 2]; | |
| 21246 } | |
| 21247 | |
| 21248 if (!nameToken) { | |
| 21249 return "(empty)"; | |
| 21250 } | |
| 21251 | |
| 21252 type = nameToken.type; | |
| 21253 | |
| 21254 if (type !== "(string)" && type !== "(number)" && type !== "(identifier)" && type !== "default") { | |
| 21255 return "(expression)"; | |
| 21256 } | |
| 21257 | |
| 21258 if (nameToken.accessorType) { | |
| 21259 prefix = nameToken.accessorType + " "; | |
| 21260 } | |
| 21261 | |
| 21262 return prefix + nameToken.value; | |
| 21263 }; | |
| 21264 | |
| 21265 module.exports = NameStack; | |
| 21266 | |
| 21267 },{}],20:[function(require,module,exports){ | |
| 21268 "use strict"; | |
| 21269 | |
| 21270 // These are the JSHint boolean options. | |
| 21271 exports.bool = { | |
| 21272 enforcing: { | |
| 21273 | |
| 21274 /** | |
| 21275 * This option prohibits the use of bitwise operators such as `^` (XOR), | |
| 21276 * `|` (OR) and others. Bitwise operators are very rare in JavaScript | |
| 21277 * programs and quite often `&` is simply a mistyped `&&`. | |
| 21278 */ | |
| 21279 bitwise : true, | |
| 21280 | |
| 21281 /** | |
| 21282 * | |
| 21283 * This options prohibits overwriting prototypes of native objects such as | |
| 21284 * `Array`, `Date` and so on. | |
| 21285 * | |
| 21286 * // jshint freeze:true | |
| 21287 * Array.prototype.count = function (value) { return 4; }; | |
| 21288 * // -> Warning: Extending prototype of native object: 'Array'. | |
| 21289 */ | |
| 21290 freeze : true, | |
| 21291 | |
| 21292 /** | |
| 21293 * This option allows you to force all variable names to use either | |
| 21294 * camelCase style or UPPER_CASE with underscores. | |
| 21295 * | |
| 21296 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21297 * If you would like to enforce rules relating to code style, | |
| 21298 * check out [the JSCS | |
| 21299 * project](https://github.com/jscs-dev/node-jscs). | |
| 21300 */ | |
| 21301 camelcase : true, | |
| 21302 | |
| 21303 /** | |
| 21304 * This option requires you to always put curly braces around blocks in | |
| 21305 * loops and conditionals. JavaScript allows you to omit curly braces when | |
| 21306 * the block consists of only one statement, for example: | |
| 21307 * | |
| 21308 * while (day) | |
| 21309 * shuffle(); | |
| 21310 * | |
| 21311 * However, in some circumstances, it can lead to bugs (you'd think that | |
| 21312 * `sleep()` is a part of the loop while in reality it is not): | |
| 21313 * | |
| 21314 * while (day) | |
| 21315 * shuffle(); | |
| 21316 * sleep(); | |
| 21317 */ | |
| 21318 curly : true, | |
| 21319 | |
| 21320 /** | |
| 21321 * This options prohibits the use of `==` and `!=` in favor of `===` and | |
| 21322 * `!==`. The former try to coerce values before comparing them which can | |
| 21323 * lead to some unexpected results. The latter don't do any coercion so | |
| 21324 * they are generally safer. If you would like to learn more about type | |
| 21325 * coercion in JavaScript, we recommend [Truth, Equality and | |
| 21326 * JavaScript](http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/) | |
| 21327 * by Angus Croll. | |
| 21328 */ | |
| 21329 eqeqeq : true, | |
| 21330 | |
| 21331 /** | |
| 21332 * This option enables warnings about the use of identifiers which are | |
| 21333 * defined in future versions of JavaScript. Although overwriting them has | |
| 21334 * no effect in contexts where they are not implemented, this practice can | |
| 21335 * cause issues when migrating codebases to newer versions of the language. | |
| 21336 */ | |
| 21337 futurehostile: true, | |
| 21338 | |
| 21339 /** | |
| 21340 * This option tells JSHint that your code needs to adhere to ECMAScript 3 | |
| 21341 * specification. Use this option if you need your program to be executable | |
| 21342 * in older browsers—such as Internet Explorer 6/7/8/9—and other legacy | |
| 21343 * JavaScript environments. | |
| 21344 * | |
| 21345 * @deprecated Use `esversion: 3` instead. | |
| 21346 */ | |
| 21347 es3 : true, | |
| 21348 | |
| 21349 /** | |
| 21350 * This option enables syntax first defined in [the ECMAScript 5.1 | |
| 21351 * specification](http://es5.github.io/). This includes allowing reserved | |
| 21352 * keywords as object properties. | |
| 21353 * | |
| 21354 * @deprecated Use `esversion: 5` instead. | |
| 21355 */ | |
| 21356 es5 : true, | |
| 21357 | |
| 21358 /** | |
| 21359 * This option requires all `for in` loops to filter object's items. The | |
| 21360 * for in statement allows for looping through the names of all of the | |
| 21361 * properties of an object including those inherited through the prototype | |
| 21362 * chain. This behavior can lead to unexpected items in your object so it | |
| 21363 * is generally safer to always filter inherited properties out as shown in | |
| 21364 * the example: | |
| 21365 * | |
| 21366 * for (key in obj) { | |
| 21367 * if (obj.hasOwnProperty(key)) { | |
| 21368 * // We are sure that obj[key] belongs to the object and was not inherited. | |
| 21369 * } | |
| 21370 * } | |
| 21371 * | |
| 21372 * For more in-depth understanding of `for in` loops in JavaScript, read | |
| 21373 * [Exploring JavaScript for-in | |
| 21374 * loops](http://javascriptweblog.wordpress.com/2011/01/04/exploring-javascript-for-in-loops/) | |
| 21375 * by Angus Croll. | |
| 21376 */ | |
| 21377 forin : true, | |
| 21378 | |
| 21379 /** | |
| 21380 * This option prohibits the use of immediate function invocations without | |
| 21381 * wrapping them in parentheses. Wrapping parentheses assists readers of | |
| 21382 * your code in understanding that the expression is the result of a | |
| 21383 * function, and not the function itself. | |
| 21384 * | |
| 21385 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21386 * If you would like to enforce rules relating to code style, | |
| 21387 * check out [the JSCS | |
| 21388 * project](https://github.com/jscs-dev/node-jscs). | |
| 21389 */ | |
| 21390 immed : true, | |
| 21391 | |
| 21392 /** | |
| 21393 * This option prohibits unnecessary clauses within `switch` statements, | |
| 21394 * e.g. | |
| 21395 * | |
| 21396 * switch (x) { | |
| 21397 * case 1: | |
| 21398 * default: | |
| 21399 * z(); | |
| 21400 * } | |
| 21401 * | |
| 21402 * While clauses like these are techincally valid, they do not effect | |
| 21403 * program behavior and may indicate an erroneous refactoring. | |
| 21404 */ | |
| 21405 leanswitch : true, | |
| 21406 | |
| 21407 /** | |
| 21408 * This option requires you to capitalize names of constructor functions. | |
| 21409 * Capitalizing functions that are intended to be used with `new` operator | |
| 21410 * is just a convention that helps programmers to visually distinguish | |
| 21411 * constructor functions from other types of functions to help spot | |
| 21412 * mistakes when using `this`. | |
| 21413 * | |
| 21414 * Not doing so won't break your code in any browsers or environments but | |
| 21415 * it will be a bit harder to figure out—by reading the code—if the | |
| 21416 * function was supposed to be used with or without new. And this is | |
| 21417 * important because when the function that was intended to be used with | |
| 21418 * `new` is used without it, `this` will point to the global object instead | |
| 21419 * of a new object. | |
| 21420 * | |
| 21421 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21422 * If you would like to enforce rules relating to code style, | |
| 21423 * check out [the JSCS | |
| 21424 * project](https://github.com/jscs-dev/node-jscs). | |
| 21425 */ | |
| 21426 newcap : true, | |
| 21427 | |
| 21428 /** | |
| 21429 * This option prohibits the use of `arguments.caller` and | |
| 21430 * `arguments.callee`. Both `.caller` and `.callee` make quite a few | |
| 21431 * optimizations impossible so they were deprecated in future versions of | |
| 21432 * JavaScript. In fact, ECMAScript 5 forbids the use of `arguments.callee` | |
| 21433 * in strict mode. | |
| 21434 */ | |
| 21435 noarg : true, | |
| 21436 | |
| 21437 /** | |
| 21438 * This option prohibits the use of the comma operator. When misused, the | |
| 21439 * comma operator can obscure the value of a statement and promote | |
| 21440 * incorrect code. | |
| 21441 */ | |
| 21442 nocomma : true, | |
| 21443 | |
| 21444 /** | |
| 21445 * This option warns when you have an empty block in your code. JSLint was | |
| 21446 * originally warning for all empty blocks and we simply made it optional. | |
| 21447 * There were no studies reporting that empty blocks in JavaScript break | |
| 21448 * your code in any way. | |
| 21449 * | |
| 21450 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21451 * If you would like to enforce rules relating to code style, | |
| 21452 * check out [the JSCS | |
| 21453 * project](https://github.com/jscs-dev/node-jscs). | |
| 21454 */ | |
| 21455 noempty : true, | |
| 21456 | |
| 21457 /** | |
| 21458 * This option warns about "non-breaking whitespace" characters. These | |
| 21459 * characters can be entered with option-space on Mac computers and have a | |
| 21460 * potential of breaking non-UTF8 web pages. | |
| 21461 */ | |
| 21462 nonbsp : true, | |
| 21463 | |
| 21464 /** | |
| 21465 * This option prohibits the use of constructor functions for side-effects. | |
| 21466 * Some people like to call constructor functions without assigning its | |
| 21467 * result to any variable: | |
| 21468 * | |
| 21469 * new MyConstructor(); | |
| 21470 * | |
| 21471 * There is no advantage in this approach over simply calling | |
| 21472 * `MyConstructor` since the object that the operator `new` creates isn't | |
| 21473 * used anywhere so you should generally avoid constructors like this one. | |
| 21474 */ | |
| 21475 nonew : true, | |
| 21476 | |
| 21477 | |
| 21478 /** | |
| 21479 * Async functions resolve on their return value. In most cases, this makes | |
| 21480 * returning the result of an AwaitExpression (which is itself a Promise | |
| 21481 * instance) unnecessary. For clarity, it's often preferable to return the | |
| 21482 * result of the asynchronous operation directly. The notable exception is | |
| 21483 * within the `try` clause of a TryStatement--for more, see "await vs | |
| 21484 * return vs return await": | |
| 21485 * | |
| 21486 * https://jakearchibald.com/2017/await-vs-return-vs-return-await/ | |
| 21487 */ | |
| 21488 noreturnawait: true, | |
| 21489 | |
| 21490 /** | |
| 21491 * This option enables warnings for regular expressions which do not | |
| 21492 * include the "u" flag. The "u" flag extends support for Unicode and also | |
| 21493 * enables more strict parsing rules. JSHint will enforce these rules even | |
| 21494 * if it is executed in a JavaScript engine which does not support the "u" | |
| 21495 * flag. | |
| 21496 */ | |
| 21497 regexpu : true, | |
| 21498 | |
| 21499 /** | |
| 21500 * This option prohibits the use of explicitly undeclared variables. This | |
| 21501 * option is very useful for spotting leaking and mistyped variables. | |
| 21502 * | |
| 21503 * // jshint undef:true | |
| 21504 * | |
| 21505 * function test() { | |
| 21506 * var myVar = 'Hello, World'; | |
| 21507 * console.log(myvar); // Oops, typoed here. JSHint with undef will complain | |
| 21508 * } | |
| 21509 * | |
| 21510 * If your variable is defined in another file, you can use the `global` | |
| 21511 * directive to tell JSHint about it. | |
| 21512 */ | |
| 21513 undef : true, | |
| 21514 | |
| 21515 /** | |
| 21516 * This option prohibits the use of the grouping operator when it is not | |
| 21517 * strictly required. Such usage commonly reflects a misunderstanding of | |
| 21518 * unary operators, for example: | |
| 21519 * | |
| 21520 * // jshint singleGroups: true | |
| 21521 * | |
| 21522 * delete(obj.attr); // Warning: Unnecessary grouping operator. | |
| 21523 */ | |
| 21524 singleGroups: false, | |
| 21525 | |
| 21526 /** | |
| 21527 * When set to true, the use of VariableStatements are forbidden. | |
| 21528 * For example: | |
| 21529 * | |
| 21530 * // jshint varstmt: true | |
| 21531 * | |
| 21532 * var a; // Warning: `var` declarations are forbidden. Use `let` or `const` instead. | |
| 21533 */ | |
| 21534 varstmt: false, | |
| 21535 | |
| 21536 /** | |
| 21537 * This option is a short hand for the most strict JSHint configuration as | |
| 21538 * available in JSHint version 2.6.3. It enables all enforcing options and | |
| 21539 * disables all relaxing options that were defined in that release. | |
| 21540 * | |
| 21541 * @deprecated The option cannot be maintained without automatically opting | |
| 21542 * users in to new features. This can lead to unexpected | |
| 21543 * warnings/errors in when upgrading between minor versions of | |
| 21544 * JSHint. | |
| 21545 */ | |
| 21546 enforceall : false, | |
| 21547 | |
| 21548 /** | |
| 21549 * This option warns when a comma is not placed after the last element in an | |
| 21550 * array or object literal. Due to bugs in old versions of IE, trailing | |
| 21551 * commas used to be discouraged, but since ES5 their semantics were | |
| 21552 * standardized. (See | |
| 21553 * [#11.1.4](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.4) and | |
| 21554 * [#11.1.5](http://www.ecma-international.org/ecma-262/5.1/#sec-11.1.5).) | |
| 21555 * Now, they help to prevent the same [visual | |
| 21556 * ambiguities](http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.2) | |
| 21557 * that the strict usage of semicolons helps prevent. | |
| 21558 * | |
| 21559 * For example, this code might have worked last Tuesday: | |
| 21560 * | |
| 21561 * [ | |
| 21562 * b + c | |
| 21563 * ].forEach(print); | |
| 21564 * | |
| 21565 * But if one adds an element to the array and forgets to compensate for the | |
| 21566 * missing comma, no syntax error is thrown, and a linter cannot determine | |
| 21567 * if this was a mistake or an intentional function invocation. | |
| 21568 * | |
| 21569 * [ | |
| 21570 * b + c | |
| 21571 * (d + e) | |
| 21572 * ].forEach(print); | |
| 21573 * | |
| 21574 * If one always appends a list item with a comma, this ambiguity cannot | |
| 21575 * occur: | |
| 21576 * | |
| 21577 * [ | |
| 21578 * b + c, | |
| 21579 * ].forEach(print); | |
| 21580 * | |
| 21581 * [ | |
| 21582 * b + c, | |
| 21583 * (d + e), | |
| 21584 * ].forEach(print); | |
| 21585 */ | |
| 21586 trailingcomma: false | |
| 21587 }, | |
| 21588 relaxing: { | |
| 21589 | |
| 21590 /** | |
| 21591 * This option suppresses warnings about missing semicolons. There is a lot | |
| 21592 * of FUD about semicolon spread by quite a few people in the community. | |
| 21593 * The common myths are that semicolons are required all the time (they are | |
| 21594 * not) and that they are unreliable. JavaScript has rules about semicolons | |
| 21595 * which are followed by *all* browsers so it is up to you to decide | |
| 21596 * whether you should or should not use semicolons in your code. | |
| 21597 * | |
| 21598 * For more information about semicolons in JavaScript read [An Open Letter | |
| 21599 * to JavaScript Leaders Regarding | |
| 21600 * Semicolons](http://blog.izs.me/post/2353458699/an-open-letter-to-javascript-leaders-regarding) | |
| 21601 * by Isaac Schlueter and [JavaScript Semicolon | |
| 21602 * Insertion](http://inimino.org/~inimino/blog/javascript_semicolons). | |
| 21603 */ | |
| 21604 asi : true, | |
| 21605 | |
| 21606 /** | |
| 21607 * This option suppresses warnings about multi-line strings. Multi-line | |
| 21608 * strings can be dangerous in JavaScript because all hell breaks loose if | |
| 21609 * you accidentally put a whitespace in between the escape character (`\`) | |
| 21610 * and a new line. | |
| 21611 * | |
| 21612 * Note that even though this option allows correct multi-line strings, it | |
| 21613 * still warns about multi-line strings without escape characters or with | |
| 21614 * anything in between the escape character and a whitespace. | |
| 21615 * | |
| 21616 * // jshint multistr:true | |
| 21617 * | |
| 21618 * var text = "Hello\ | |
| 21619 * World"; // All good. | |
| 21620 * | |
| 21621 * text = "Hello | |
| 21622 * World"; // Warning, no escape character. | |
| 21623 * | |
| 21624 * text = "Hello\ | |
| 21625 * World"; // Warning, there is a space after \ | |
| 21626 * | |
| 21627 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21628 * If you would like to enforce rules relating to code style, | |
| 21629 * check out [the JSCS | |
| 21630 * project](https://github.com/jscs-dev/node-jscs). | |
| 21631 */ | |
| 21632 multistr : true, | |
| 21633 | |
| 21634 /** | |
| 21635 * This option suppresses warnings about the `debugger` statements in your | |
| 21636 * code. | |
| 21637 */ | |
| 21638 debug : true, | |
| 21639 | |
| 21640 /** | |
| 21641 * This option suppresses warnings about the use of assignments in cases | |
| 21642 * where comparisons are expected. More often than not, code like `if (a = | |
| 21643 * 10) {}` is a typo. However, it can be useful in cases like this one: | |
| 21644 * | |
| 21645 * for (var i = 0, person; person = people[i]; i++) {} | |
| 21646 * | |
| 21647 * You can silence this error on a per-use basis by surrounding the assignment | |
| 21648 * with parenthesis, such as: | |
| 21649 * | |
| 21650 * for (var i = 0, person; (person = people[i]); i++) {} | |
| 21651 */ | |
| 21652 boss : true, | |
| 21653 | |
| 21654 /** | |
| 21655 * This option suppresses warnings about the use of `eval`. The use of | |
| 21656 * `eval` is discouraged because it can make your code vulnerable to | |
| 21657 * various injection attacks and it makes it hard for JavaScript | |
| 21658 * interpreter to do certain optimizations. | |
| 21659 */ | |
| 21660 evil : true, | |
| 21661 | |
| 21662 /** | |
| 21663 * This option suppresses warnings about declaring variables inside | |
| 21664 * of control structures while accessing them later from the outside. | |
| 21665 * Even though identifiers declared with `var` have two real scopes—global | |
| 21666 * and function—such practice leads to confusion among people new to | |
| 21667 * the language and hard-to-debug bugs. This is why, by default, JSHint | |
| 21668 * warns about variables that are used outside of their intended scope. | |
| 21669 * | |
| 21670 * function test() { | |
| 21671 * if (true) { | |
| 21672 * var x = 0; | |
| 21673 * } | |
| 21674 * | |
| 21675 * x += 1; // Default: 'x' used out of scope. | |
| 21676 * // No warning when funcscope:true | |
| 21677 * } | |
| 21678 */ | |
| 21679 funcscope : true, | |
| 21680 | |
| 21681 /** | |
| 21682 * This option suppresses warnings about the use of global strict mode. | |
| 21683 * Global strict mode can break third-party widgets so it is not | |
| 21684 * recommended. | |
| 21685 * | |
| 21686 * For more info about strict mode see the `strict` option. | |
| 21687 * | |
| 21688 * @deprecated Use `strict: "global"`. | |
| 21689 */ | |
| 21690 globalstrict: true, | |
| 21691 | |
| 21692 /** | |
| 21693 * This option suppresses warnings about the `__iterator__` property. This | |
| 21694 * property is not supported by all browsers so use it carefully. | |
| 21695 */ | |
| 21696 iterator : true, | |
| 21697 | |
| 21698 /** | |
| 21699 * This option suppresses warnings about invalid `typeof` operator values. | |
| 21700 * This operator has only [a limited set of possible return | |
| 21701 * values](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof). | |
| 21702 * By default, JSHint warns when you compare its result with an invalid | |
| 21703 * value which often can be a typo. | |
| 21704 * | |
| 21705 * // 'fuction' instead of 'function' | |
| 21706 * if (typeof a == "fuction") { // Invalid typeof value 'fuction' | |
| 21707 * // ... | |
| 21708 * } | |
| 21709 * | |
| 21710 * Do not use this option unless you're absolutely sure you don't want | |
| 21711 * these checks. | |
| 21712 */ | |
| 21713 notypeof : true, | |
| 21714 | |
| 21715 /** | |
| 21716 * This option prohibits the use of unary increment and decrement | |
| 21717 * operators. Some people think that `++` and `--` reduces the quality of | |
| 21718 * their coding styles and there are programming languages—such as | |
| 21719 * Python—that go completely without these operators. | |
| 21720 */ | |
| 21721 plusplus : true, | |
| 21722 | |
| 21723 /** | |
| 21724 * This option suppresses warnings about the `__proto__` property. | |
| 21725 */ | |
| 21726 proto : true, | |
| 21727 | |
| 21728 /** | |
| 21729 * This option suppresses warnings about the use of script-targeted | |
| 21730 * URLs—such as `javascript:...`. | |
| 21731 */ | |
| 21732 scripturl : true, | |
| 21733 | |
| 21734 /** | |
| 21735 * This option suppresses warnings about using `[]` notation when it can be | |
| 21736 * expressed in dot notation: `person['name']` vs. `person.name`. | |
| 21737 * | |
| 21738 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21739 * If you would like to enforce rules relating to code style, | |
| 21740 * check out [the JSCS | |
| 21741 * project](https://github.com/jscs-dev/node-jscs). | |
| 21742 */ | |
| 21743 sub : true, | |
| 21744 | |
| 21745 /** | |
| 21746 * This option suppresses warnings about "weird" constructions like | |
| 21747 * `new function () { ... }` and `new Object;`. Such constructions are | |
| 21748 * sometimes used to produce singletons in JavaScript: | |
| 21749 * | |
| 21750 * var singleton = new function() { | |
| 21751 * var privateVar; | |
| 21752 * | |
| 21753 * this.publicMethod = function () {} | |
| 21754 * this.publicMethod2 = function () {} | |
| 21755 * }; | |
| 21756 */ | |
| 21757 supernew : true, | |
| 21758 | |
| 21759 /** | |
| 21760 * This option suppresses most of the warnings about possibly unsafe line | |
| 21761 * breakings in your code. It doesn't suppress warnings about comma-first | |
| 21762 * coding style. To suppress those you have to use `laxcomma` (see below). | |
| 21763 * | |
| 21764 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21765 * If you would like to enforce rules relating to code style, | |
| 21766 * check out [the JSCS | |
| 21767 * project](https://github.com/jscs-dev/node-jscs). | |
| 21768 */ | |
| 21769 laxbreak : true, | |
| 21770 | |
| 21771 /** | |
| 21772 * This option suppresses warnings about comma-first coding style: | |
| 21773 * | |
| 21774 * var obj = { | |
| 21775 * name: 'Anton' | |
| 21776 * , handle: 'valueof' | |
| 21777 * , role: 'SW Engineer' | |
| 21778 * }; | |
| 21779 * | |
| 21780 * @deprecated JSHint is limiting its scope to issues of code correctness. | |
| 21781 * If you would like to enforce rules relating to code style, | |
| 21782 * check out [the JSCS | |
| 21783 * project](https://github.com/jscs-dev/node-jscs). | |
| 21784 */ | |
| 21785 laxcomma : true, | |
| 21786 | |
| 21787 /** | |
| 21788 * This option suppresses warnings about possible strict violations when | |
| 21789 * the code is running in strict mode and you use `this` in a | |
| 21790 * non-constructor function. You should use this option—in a function scope | |
| 21791 * only—when you are positive that your use of `this` is valid in the | |
| 21792 * strict mode (for example, if you call your function using | |
| 21793 * `Function.call`). | |
| 21794 * | |
| 21795 * **Note:** This option can be used only inside of a function scope. | |
| 21796 * JSHint will fail with an error if you will try to set this option | |
| 21797 * globally. | |
| 21798 */ | |
| 21799 validthis : true, | |
| 21800 | |
| 21801 /** | |
| 21802 * This option suppresses warnings about the use of the `with` statement. | |
| 21803 * The semantics of the `with` statement can cause confusion among | |
| 21804 * developers and accidental definition of global variables. | |
| 21805 * | |
| 21806 * More info: | |
| 21807 * | |
| 21808 * * [with Statement Considered | |
| 21809 * Harmful](http://yuiblog.com/blog/2006/04/11/with-statement-considered-harmful/) | |
| 21810 */ | |
| 21811 withstmt : true, | |
| 21812 | |
| 21813 /** | |
| 21814 * This options tells JSHint that your code uses Mozilla JavaScript | |
| 21815 * extensions. Unless you develop specifically for the Firefox web browser | |
| 21816 * you don't need this option. | |
| 21817 * | |
| 21818 * More info: | |
| 21819 * | |
| 21820 * * [New in JavaScript | |
| 21821 * 1.7](https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.7) | |
| 21822 */ | |
| 21823 moz : true, | |
| 21824 | |
| 21825 /** | |
| 21826 * This option suppresses warnings about generator functions with no | |
| 21827 * `yield` statement in them. | |
| 21828 */ | |
| 21829 noyield : true, | |
| 21830 | |
| 21831 /** | |
| 21832 * This option suppresses warnings about `== null` comparisons. Such | |
| 21833 * comparisons are often useful when you want to check if a variable is | |
| 21834 * `null` or `undefined`. | |
| 21835 */ | |
| 21836 eqnull : true, | |
| 21837 | |
| 21838 /** | |
| 21839 * This option suppresses warnings about missing semicolons, but only when | |
| 21840 * the semicolon is omitted for the last statement in a one-line block: | |
| 21841 * | |
| 21842 * var name = (function() { return 'Anton' }()); | |
| 21843 * | |
| 21844 * This is a very niche use case that is useful only when you use automatic | |
| 21845 * JavaScript code generators. | |
| 21846 */ | |
| 21847 lastsemic : true, | |
| 21848 | |
| 21849 /** | |
| 21850 * This option suppresses warnings about functions inside of loops. | |
| 21851 * Defining functions inside of loops can lead to bugs such as this one: | |
| 21852 * | |
| 21853 * var nums = []; | |
| 21854 * | |
| 21855 * for (var i = 0; i < 10; i++) { | |
| 21856 * nums[i] = function (j) { | |
| 21857 * return i + j; | |
| 21858 * }; | |
| 21859 * } | |
| 21860 * | |
| 21861 * nums[0](2); // Prints 12 instead of 2 | |
| 21862 * | |
| 21863 * To fix the code above you need to copy the value of `i`: | |
| 21864 * | |
| 21865 * var nums = []; | |
| 21866 * | |
| 21867 * for (var i = 0; i < 10; i++) { | |
| 21868 * (function (i) { | |
| 21869 * nums[i] = function (j) { | |
| 21870 * return i + j; | |
| 21871 * }; | |
| 21872 * }(i)); | |
| 21873 * } | |
| 21874 */ | |
| 21875 loopfunc : true, | |
| 21876 | |
| 21877 /** | |
| 21878 * This option suppresses warnings about the use of expressions where | |
| 21879 * normally you would expect to see assignments or function calls. Most of | |
| 21880 * the time, such code is a typo. However, it is not forbidden by the spec | |
| 21881 * and that's why this warning is optional. | |
| 21882 */ | |
| 21883 expr : true, | |
| 21884 | |
| 21885 /** | |
| 21886 * This option tells JSHint that your code uses ECMAScript 6 specific | |
| 21887 * syntax. Note that not all browsers implement these features. | |
| 21888 * | |
| 21889 * More info: | |
| 21890 * | |
| 21891 * * [Specification for ECMAScript | |
| 21892 * 6](http://www.ecma-international.org/ecma-262/6.0/index.html) | |
| 21893 * | |
| 21894 * @deprecated Use `esversion: 6` instead. | |
| 21895 */ | |
| 21896 esnext : true, | |
| 21897 | |
| 21898 /** | |
| 21899 * This option tells JSHint that your code uses ES3 array elision elements, | |
| 21900 * or empty elements (for example, `[1, , , 4, , , 7]`). | |
| 21901 */ | |
| 21902 elision : true, | |
| 21903 }, | |
| 21904 | |
| 21905 // Third party globals | |
| 21906 environments: { | |
| 21907 | |
| 21908 /** | |
| 21909 * This option defines globals exposed by the | |
| 21910 * [MooTools](http://mootools.net/) JavaScript framework. | |
| 21911 */ | |
| 21912 mootools : true, | |
| 21913 | |
| 21914 /** | |
| 21915 * This option defines globals exposed by | |
| 21916 * [CouchDB](http://couchdb.apache.org/). CouchDB is a document-oriented | |
| 21917 * database that can be queried and indexed in a MapReduce fashion using | |
| 21918 * JavaScript. | |
| 21919 */ | |
| 21920 couch : true, | |
| 21921 | |
| 21922 /** | |
| 21923 * This option defines globals exposed by [the Jasmine unit testing | |
| 21924 * framework](https://jasmine.github.io/). | |
| 21925 */ | |
| 21926 jasmine : true, | |
| 21927 | |
| 21928 /** | |
| 21929 * This option defines globals exposed by the [jQuery](http://jquery.com/) | |
| 21930 * JavaScript library. | |
| 21931 */ | |
| 21932 jquery : true, | |
| 21933 | |
| 21934 /** | |
| 21935 * This option defines globals available when your code is running inside | |
| 21936 * of the Node runtime environment. [Node.js](http://nodejs.org/) is a | |
| 21937 * server-side JavaScript environment that uses an asynchronous | |
| 21938 * event-driven model. This option also skips some warnings that make sense | |
| 21939 * in the browser environments but don't make sense in Node such as | |
| 21940 * file-level `use strict` pragmas and `console.log` statements. | |
| 21941 */ | |
| 21942 node : true, | |
| 21943 | |
| 21944 /** | |
| 21945 * This option defines globals exposed by [the QUnit unit testing | |
| 21946 * framework](http://qunitjs.com/). | |
| 21947 */ | |
| 21948 qunit : true, | |
| 21949 | |
| 21950 /** | |
| 21951 * This option defines globals available when your code is running inside | |
| 21952 * of the Rhino runtime environment. [Rhino](http://www.mozilla.org/rhino/) | |
| 21953 * is an open-source implementation of JavaScript written entirely in Java. | |
| 21954 */ | |
| 21955 rhino : true, | |
| 21956 | |
| 21957 /** | |
| 21958 * This option defines globals exposed by [the ShellJS | |
| 21959 * library](http://documentup.com/arturadib/shelljs). | |
| 21960 */ | |
| 21961 shelljs : true, | |
| 21962 | |
| 21963 /** | |
| 21964 * This option defines globals exposed by the | |
| 21965 * [Prototype](http://www.prototypejs.org/) JavaScript framework. | |
| 21966 */ | |
| 21967 prototypejs : true, | |
| 21968 | |
| 21969 /** | |
| 21970 * This option defines globals exposed by the [YUI](http://yuilibrary.com/) | |
| 21971 * JavaScript framework. | |
| 21972 */ | |
| 21973 yui : true, | |
| 21974 | |
| 21975 /** | |
| 21976 * This option defines globals exposed by the "BDD" and "TDD" UIs of the | |
| 21977 * [Mocha unit testing framework](http://mochajs.org/). | |
| 21978 */ | |
| 21979 mocha : true, | |
| 21980 | |
| 21981 /** | |
| 21982 * This option informs JSHint that the input code describes an ECMAScript 6 | |
| 21983 * module. All module code is interpreted as strict mode code. | |
| 21984 */ | |
| 21985 module : true, | |
| 21986 | |
| 21987 /** | |
| 21988 * This option defines globals available when your code is running as a | |
| 21989 * script for the [Windows Script | |
| 21990 * Host](http://en.wikipedia.org/wiki/Windows_Script_Host). | |
| 21991 */ | |
| 21992 wsh : true, | |
| 21993 | |
| 21994 /** | |
| 21995 * This option defines globals available when your code is running inside | |
| 21996 * of a Web Worker. [Web | |
| 21997 * Workers](https://developer.mozilla.org/en/Using_web_workers) provide a | |
| 21998 * simple means for web content to run scripts in background threads. | |
| 21999 */ | |
| 22000 worker : true, | |
| 22001 | |
| 22002 /** | |
| 22003 * This option defines non-standard but widely adopted globals such as | |
| 22004 * `escape` and `unescape`. | |
| 22005 */ | |
| 22006 nonstandard : true, | |
| 22007 | |
| 22008 /** | |
| 22009 * This option defines globals exposed by modern browsers: all the way from | |
| 22010 * good old `document` and `navigator` to the HTML5 `FileReader` and other | |
| 22011 * new developments in the browser world. | |
| 22012 * | |
| 22013 * **Note:** This option doesn't expose variables like `alert` or | |
| 22014 * `console`. See option `devel` for more information. | |
| 22015 */ | |
| 22016 browser : true, | |
| 22017 | |
| 22018 /** | |
| 22019 * This option defines globals available when using [the Browserify | |
| 22020 * tool](http://browserify.org/) to build a project. | |
| 22021 */ | |
| 22022 browserify : true, | |
| 22023 | |
| 22024 /** | |
| 22025 * This option defines globals that are usually used for logging poor-man's | |
| 22026 * debugging: `console`, `alert`, etc. It is usually a good idea to not | |
| 22027 * ship them in production because, for example, `console.log` breaks in | |
| 22028 * legacy versions of Internet Explorer. | |
| 22029 */ | |
| 22030 devel : true, | |
| 22031 | |
| 22032 /** | |
| 22033 * This option defines globals exposed by the [Dojo | |
| 22034 * Toolkit](http://dojotoolkit.org/). | |
| 22035 */ | |
| 22036 dojo : true, | |
| 22037 | |
| 22038 /** | |
| 22039 * This option defines globals for typed array constructors. | |
| 22040 * | |
| 22041 * More info: | |
| 22042 * | |
| 22043 * * [JavaScript typed | |
| 22044 * arrays](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays) | |
| 22045 */ | |
| 22046 typed : true, | |
| 22047 | |
| 22048 /** | |
| 22049 * This option defines globals available when your core is running inside | |
| 22050 * of the PhantomJS runtime environment. [PhantomJS](http://phantomjs.org/) | |
| 22051 * is a headless WebKit scriptable with a JavaScript API. It has fast and | |
| 22052 * native support for various web standards: DOM handling, CSS selector, | |
| 22053 * JSON, Canvas, and SVG. | |
| 22054 */ | |
| 22055 phantom : true | |
| 22056 }, | |
| 22057 | |
| 22058 // Obsolete options | |
| 22059 obsolete: { | |
| 22060 onecase : true, // if one case switch statements should be allowed | |
| 22061 regexp : true, // if the . should not be allowed in regexp literals | |
| 22062 regexdash : true // if unescaped first/last dash (-) inside brackets | |
| 22063 // should be tolerated | |
| 22064 } | |
| 22065 }; | |
| 22066 | |
| 22067 // These are the JSHint options that can take any value | |
| 22068 // (we use this object to detect invalid options) | |
| 22069 exports.val = { | |
| 22070 | |
| 22071 /** | |
| 22072 * This option lets you set the maximum length of a line. | |
| 22073 * | |
| 22074 * @deprecated JSHint is limiting its scope to issues of code correctness. If | |
| 22075 * you would like to enforce rules relating to code style, check | |
| 22076 * out [the JSCS project](https://github.com/jscs-dev/node-jscs). | |
| 22077 */ | |
| 22078 maxlen : false, | |
| 22079 | |
| 22080 /** | |
| 22081 * This option sets a specific tab width for your code. | |
| 22082 * | |
| 22083 * @deprecated JSHint is limiting its scope to issues of code correctness. If | |
| 22084 * you would like to enforce rules relating to code style, check | |
| 22085 * out [the JSCS project](https://github.com/jscs-dev/node-jscs). | |
| 22086 */ | |
| 22087 indent : false, | |
| 22088 | |
| 22089 /** | |
| 22090 * This options allows you to set the maximum amount of warnings JSHint will | |
| 22091 * produce before giving up. Default is 50. | |
| 22092 */ | |
| 22093 maxerr : false, | |
| 22094 | |
| 22095 /** | |
| 22096 * This option allows you to control which variables JSHint considers to be | |
| 22097 * implicitly defined in the environment. Configure it with an array of | |
| 22098 * string values. Prefixing a variable name with a hyphen (-) character will | |
| 22099 * remove that name from the collection of predefined variables. | |
| 22100 * | |
| 22101 * JSHint will consider variables declared in this way to be read-only. | |
| 22102 * | |
| 22103 * This option cannot be specified in-line; it may only be used via the | |
| 22104 * JavaScript API or from an external configuration file. | |
| 22105 */ | |
| 22106 predef : false, | |
| 22107 | |
| 22108 /** | |
| 22109 * This option can be used to specify a white list of global variables that | |
| 22110 * are not formally defined in the source code. This is most useful when | |
| 22111 * combined with the `undef` option in order to suppress warnings for | |
| 22112 * project-specific global variables. | |
| 22113 * | |
| 22114 * Setting an entry to `true` enables reading and writing to that variable. | |
| 22115 * Setting it to `false` will trigger JSHint to consider that variable | |
| 22116 * read-only. | |
| 22117 * | |
| 22118 * See also the "environment" options: a set of options to be used as short | |
| 22119 * hand for enabling global variables defined in common JavaScript | |
| 22120 * environments. | |
| 22121 * | |
| 22122 * To configure `globals` within an individual file, see [Inline | |
| 22123 * Configuration](http://jshint.com/docs/#inline-configuration). | |
| 22124 */ | |
| 22125 globals : false, | |
| 22126 | |
| 22127 /** | |
| 22128 * This option enforces the consistency of quotation marks used throughout | |
| 22129 * your code. It accepts three values: `true` if you don't want to enforce | |
| 22130 * one particular style but want some consistency, `"single"` if you want to | |
| 22131 * allow only single quotes and `"double"` if you want to allow only double | |
| 22132 * quotes. | |
| 22133 * | |
| 22134 * @deprecated JSHint is limiting its scope to issues of code correctness. If | |
| 22135 * you would like to enforce rules relating to code style, check | |
| 22136 * out [the JSCS project](https://github.com/jscs-dev/node-jscs). | |
| 22137 */ | |
| 22138 quotmark : false, | |
| 22139 | |
| 22140 scope : false, | |
| 22141 | |
| 22142 /** | |
| 22143 * This option lets you set the max number of statements allowed per function: | |
| 22144 * | |
| 22145 * // jshint maxstatements:4 | |
| 22146 * | |
| 22147 * function main() { | |
| 22148 * var i = 0; | |
| 22149 * var j = 0; | |
| 22150 * | |
| 22151 * // Function declarations count as one statement. Their bodies | |
| 22152 * // don't get taken into account for the outer function. | |
| 22153 * function inner() { | |
| 22154 * var i2 = 1; | |
| 22155 * var j2 = 1; | |
| 22156 * | |
| 22157 * return i2 + j2; | |
| 22158 * } | |
| 22159 * | |
| 22160 * j = i + j; | |
| 22161 * return j; // JSHint: Too many statements per function. (5) | |
| 22162 * } | |
| 22163 */ | |
| 22164 maxstatements: false, | |
| 22165 | |
| 22166 /** | |
| 22167 * This option lets you control how nested do you want your blocks to be: | |
| 22168 * | |
| 22169 * // jshint maxdepth:2 | |
| 22170 * | |
| 22171 * function main(meaning) { | |
| 22172 * var day = true; | |
| 22173 * | |
| 22174 * if (meaning === 42) { | |
| 22175 * while (day) { | |
| 22176 * shuffle(); | |
| 22177 * | |
| 22178 * if (tired) { // JSHint: Blocks are nested too deeply (3). | |
| 22179 * sleep(); | |
| 22180 * } | |
| 22181 * } | |
| 22182 * } | |
| 22183 * } | |
| 22184 */ | |
| 22185 maxdepth : false, | |
| 22186 | |
| 22187 /** | |
| 22188 * This option lets you set the max number of formal parameters allowed per | |
| 22189 * function: | |
| 22190 * | |
| 22191 * // jshint maxparams:3 | |
| 22192 * | |
| 22193 * function login(request, onSuccess) { | |
| 22194 * // ... | |
| 22195 * } | |
| 22196 * | |
| 22197 * // JSHint: Too many parameters per function (4). | |
| 22198 * function logout(request, isManual, whereAmI, onSuccess) { | |
| 22199 * // ... | |
| 22200 * } | |
| 22201 */ | |
| 22202 maxparams : false, | |
| 22203 | |
| 22204 /** | |
| 22205 * This option lets you control cyclomatic complexity throughout your code. | |
| 22206 * Cyclomatic complexity measures the number of linearly independent paths | |
| 22207 * through a program's source code. Read more about [cyclomatic complexity on | |
| 22208 * Wikipedia](http://en.wikipedia.org/wiki/Cyclomatic_complexity). | |
| 22209 */ | |
| 22210 maxcomplexity: false, | |
| 22211 | |
| 22212 /** | |
| 22213 * This option suppresses warnings about variable shadowing i.e. declaring a | |
| 22214 * variable that had been already declared somewhere in the outer scope. | |
| 22215 * | |
| 22216 * - "inner" - check for variables defined in the same scope only | |
| 22217 * - "outer" - check for variables defined in outer scopes as well | |
| 22218 * - false - same as inner | |
| 22219 * - true - allow variable shadowing | |
| 22220 */ | |
| 22221 shadow : false, | |
| 22222 | |
| 22223 /** | |
| 22224 * This option requires the code to run in ECMAScript 5's strict mode. | |
| 22225 * [Strict mode](https://developer.mozilla.org/en/JavaScript/Strict_mode) | |
| 22226 * is a way to opt in to a restricted variant of JavaScript. Strict mode | |
| 22227 * eliminates some JavaScript pitfalls that didn't cause errors by changing | |
| 22228 * them to produce errors. It also fixes mistakes that made it difficult | |
| 22229 * for the JavaScript engines to perform certain optimizations. | |
| 22230 * | |
| 22231 * - "global" - there must be a `"use strict";` directive at global level | |
| 22232 * - "implied" - lint the code as if there is the `"use strict";` directive | |
| 22233 * - false - disable warnings about strict mode | |
| 22234 * - true - there must be a `"use strict";` directive at function level; | |
| 22235 * this is preferable for scripts intended to be loaded in web | |
| 22236 * browsers directly because enabling strict mode globally | |
| 22237 * could adversely effect other scripts running on the same | |
| 22238 * page | |
| 22239 */ | |
| 22240 strict : true, | |
| 22241 | |
| 22242 /** | |
| 22243 * This option warns when you define and never use your variables. It is very | |
| 22244 * useful for general code cleanup, especially when used in addition to | |
| 22245 * `undef`. | |
| 22246 * | |
| 22247 * // jshint unused:true | |
| 22248 * | |
| 22249 * function test(a, b) { | |
| 22250 * var c, d = 2; | |
| 22251 * | |
| 22252 * return a + d; | |
| 22253 * } | |
| 22254 * | |
| 22255 * test(1, 2); | |
| 22256 * | |
| 22257 * // Line 3: 'b' was defined but never used. | |
| 22258 * // Line 4: 'c' was defined but never used. | |
| 22259 * | |
| 22260 * In addition to that, this option will warn you about unused global | |
| 22261 * variables declared via the `global` directive. | |
| 22262 * | |
| 22263 * When set to `true`, unused parameters that are followed by a used | |
| 22264 * parameter will not produce warnings. This option can be set to `vars` to | |
| 22265 * only check for variables, not function parameters, or `strict` to check | |
| 22266 * all variables and parameters. | |
| 22267 */ | |
| 22268 unused : true, | |
| 22269 | |
| 22270 /** | |
| 22271 * This option prohibits the use of a variable before it was defined. | |
| 22272 * JavaScript has function scope only and, in addition to that, all variables | |
| 22273 * are always moved—or hoisted— to the top of the function. This behavior can | |
| 22274 * lead to some very nasty bugs and that's why it is safer to always use | |
| 22275 * variable only after they have been explicitly defined. | |
| 22276 * | |
| 22277 * Setting this option to "nofunc" will allow function declarations to be | |
| 22278 * ignored. | |
| 22279 * | |
| 22280 * For more in-depth understanding of scoping and hoisting in JavaScript, | |
| 22281 * read [JavaScript Scoping and | |
| 22282 * Hoisting](http://www.adequatelygood.com/2010/2/JavaScript-Scoping-and-Hoisting) | |
| 22283 * by Ben Cherry. | |
| 22284 */ | |
| 22285 latedef : false, | |
| 22286 | |
| 22287 ignore : false, // start/end ignoring lines of code, bypassing the lexer | |
| 22288 // start - start ignoring lines, including the current line | |
| 22289 // end - stop ignoring lines, starting on the next line | |
| 22290 // line - ignore warnings / errors for just a single line | |
| 22291 // (this option does not bypass the lexer) | |
| 22292 | |
| 22293 ignoreDelimiters: false, // array of start/end delimiters used to ignore | |
| 22294 // certain chunks from code | |
| 22295 | |
| 22296 /** | |
| 22297 * This option is used to specify the ECMAScript version to which the code | |
| 22298 * must adhere. It can assume one of the following values: | |
| 22299 * - `3` - If you need your program to be executable | |
| 22300 * in older browsers—such as Internet Explorer 6/7/8/9—and other legacy | |
| 22301 * JavaScript environments | |
| 22302 * - `5` - To enable syntax first defined in [the ECMAScript 5.1 | |
| 22303 * specification](http://www.ecma-international.org/ecma-262/5.1/index.html). | |
| 22304 * This includes allowing reserved keywords as object properties. | |
| 22305 * - `6` - To tell JSHint that your code uses [ECMAScript | |
| 22306 * 6](http://www.ecma-international.org/ecma-262/6.0/index.html) specific | |
| 22307 * syntax. Note that not all browsers implement them. | |
| 22308 * - `7` - To enable language features introduced by [ECMAScript | |
| 22309 * 7](https://www.ecma-international.org/ecma-262/7.0/index.html). Notable | |
| 22310 * additions: the exponentiation operator. | |
| 22311 * - `8` - To enable language features introduced by [ECMAScript | |
| 22312 * 8](https://www.ecma-international.org/ecma-262/8.0/index.html). Notable | |
| 22313 * additions: async functions, shared memory, and atomics | |
| 22314 * - `9` - To enable language features introduced by [ECMAScript | |
| 22315 * 9](https://www.ecma-international.org/ecma-262/9.0/index.html). Notable | |
| 22316 * additions: asynchronous iteration, rest/spread properties, and various | |
| 22317 * RegExp extensions | |
| 22318 * - `10` - To enable language features introduced by ECMAScript | |
| 22319 * 10](https://www.ecma-international.org/ecma-262/10.0/index.html). | |
| 22320 * Notable additions: optional catch bindings. | |
| 22321 */ | |
| 22322 esversion: 5 | |
| 22323 }; | |
| 22324 | |
| 22325 /** | |
| 22326 * Unstable options allow control for parsing and linting of proposed additions | |
| 22327 * to the JavaScript language. Just like the language features they describe, | |
| 22328 * the presence and behavior of these options is volatile; JSHint reserves the | |
| 22329 * right to remove or modify them between major version releases. | |
| 22330 */ | |
| 22331 exports.unstable = { | |
| 22332 /** | |
| 22333 * [The BigInt proposal](https://github.com/tc39/proposal-bigint) extends the | |
| 22334 * language's grammer for numeric literals to support integer values of | |
| 22335 * arbitrary precision. It also introduces a new value of the `typeof` | |
| 22336 * operator, "bigint". | |
| 22337 * | |
| 22338 * Mathematical operations which use both BigInt and traditional ECMAScript | |
| 22339 * Number values may not have the intended effect. Due to the weakly-typed | |
| 22340 * nature of the language, JSHint is unable to identify such cases. | |
| 22341 */ | |
| 22342 bigint: true | |
| 22343 }; | |
| 22344 | |
| 22345 // These are JSHint boolean options which are shared with JSLint | |
| 22346 // where the definition in JSHint is opposite JSLint | |
| 22347 exports.inverted = { | |
| 22348 bitwise : true, | |
| 22349 forin : true, | |
| 22350 newcap : true, | |
| 22351 plusplus: true, | |
| 22352 regexp : true, | |
| 22353 undef : true, | |
| 22354 | |
| 22355 // Inverted and renamed, use JSHint name here | |
| 22356 eqeqeq : true, | |
| 22357 strict : true | |
| 22358 }; | |
| 22359 | |
| 22360 exports.validNames = Object.keys(exports.val) | |
| 22361 .concat(Object.keys(exports.bool.relaxing)) | |
| 22362 .concat(Object.keys(exports.bool.enforcing)) | |
| 22363 .concat(Object.keys(exports.bool.obsolete)) | |
| 22364 .concat(Object.keys(exports.bool.environments)) | |
| 22365 .concat(["unstable"]); | |
| 22366 | |
| 22367 exports.unstableNames = Object.keys(exports.unstable); | |
| 22368 | |
| 22369 // These are JSHint boolean options which are shared with JSLint | |
| 22370 // where the name has been changed but the effect is unchanged | |
| 22371 exports.renamed = { | |
| 22372 eqeq : "eqeqeq", | |
| 22373 windows: "wsh", | |
| 22374 sloppy : "strict" | |
| 22375 }; | |
| 22376 | |
| 22377 exports.removed = { | |
| 22378 nomen: true, | |
| 22379 onevar: true, | |
| 22380 passfail: true, | |
| 22381 white: true, | |
| 22382 gcl: true, | |
| 22383 smarttabs: true, | |
| 22384 trailing: true | |
| 22385 }; | |
| 22386 | |
| 22387 // Add options here which should not be automatically enforced by | |
| 22388 // `enforceall`. | |
| 22389 exports.noenforceall = { | |
| 22390 varstmt: true, | |
| 22391 strict: true, | |
| 22392 regexpu: true | |
| 22393 }; | |
| 22394 | |
| 22395 },{}],21:[function(require,module,exports){ | |
| 22396 /** | |
| 22397 * This module defines a set of enum-like values intended for use as bit | |
| 22398 * "flags" during parsing. The ECMAScript grammar defines a number of such | |
| 22399 * "production parameters" to control how certain forms are parsed in context. | |
| 22400 * JSHint implements additional parameters to facilitate detection of lint | |
| 22401 * warnings. | |
| 22402 * | |
| 22403 * An equivalent implementation which described the context in terms of a | |
| 22404 * "lookup table" object would be more idiomatic for a JavaScript project like | |
| 22405 * JSHint. However, because the number of contexts scales with the number of | |
| 22406 * expressions in the input program, this would have non-negligible impact on | |
| 22407 * the process's memory footprint. | |
| 22408 */ | |
| 22409 module.exports = { | |
| 22410 /** | |
| 22411 * Enabled when parsing expressions within ES2015 "export" declarations, | |
| 22412 * allowing otherwise-unreferenced bindings to be considered "used". | |
| 22413 */ | |
| 22414 export: 1, | |
| 22415 | |
| 22416 /** | |
| 22417 * Enabled when parsing expressions within the head of `for` statements, | |
| 22418 * allowing to distinguish between `for-in` and "C-style" `for` statements. | |
| 22419 */ | |
| 22420 noin: 2, | |
| 22421 | |
| 22422 /** | |
| 22423 * Enabled when the expression begins the statement, allowing the parser to | |
| 22424 * correctly select between the null denotation ("nud") and first null | |
| 22425 * denotation ("fud") parsing strategy. | |
| 22426 */ | |
| 22427 initial: 4, | |
| 22428 | |
| 22429 preAsync: 8, | |
| 22430 | |
| 22431 async: 16, | |
| 22432 | |
| 22433 /** | |
| 22434 * Enabled when any exception thrown by the expression will be caught by a | |
| 22435 * TryStatement. | |
| 22436 */ | |
| 22437 tryClause: 32, | |
| 22438 | |
| 22439 /** | |
| 22440 * Enabled when parsing the body of a generator function. | |
| 22441 */ | |
| 22442 yield: 64 | |
| 22443 }; | |
| 22444 | |
| 22445 },{}],22:[function(require,module,exports){ | |
| 22446 /* | |
| 22447 * Regular expressions. Some of these are stupidly long. | |
| 22448 */ | |
| 22449 | |
| 22450 /*jshint maxlen:1000 */ | |
| 22451 | |
| 22452 "use strict"; | |
| 22453 | |
| 22454 // Unsafe comment or string (ax) | |
| 22455 exports.unsafeString = | |
| 22456 /@cc|<\/?|script|\]\s*\]|<\s*!|</i; | |
| 22457 | |
| 22458 // Characters in strings that need escaping (nx and nxg) | |
| 22459 exports.needEsc = | |
| 22460 /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/; | |
| 22461 | |
| 22462 exports.needEscGlobal = | |
| 22463 /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g; | |
| 22464 | |
| 22465 // Star slash (lx) | |
| 22466 exports.starSlash = /\*\//; | |
| 22467 | |
| 22468 // Identifier (ix) | |
| 22469 exports.identifier = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/; | |
| 22470 | |
| 22471 // JavaScript URL (jx) | |
| 22472 exports.javascriptURL = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i; | |
| 22473 | |
| 22474 // Catches /* falls through */ comments (ft) | |
| 22475 exports.fallsThrough = /^\s*falls?\sthrough\s*$/; | |
| 22476 | |
| 22477 // very conservative rule (eg: only one space between the start of the comment and the first character) | |
| 22478 // to relax the maxlen option | |
| 22479 exports.maxlenException = /^(?:(?:\/\/|\/\*|\*) ?)?[^ ]+$/; | |
| 22480 | |
| 22481 // Node.js releases prior to version 8 include a version of the V8 engine which | |
| 22482 // incorrectly interprets the character class escape `\s`. The following | |
| 22483 // regular expression may be replaced with `/\s/` when JSHint removes support | |
| 22484 // for Node.js versions prior to 8. | |
| 22485 // Source: | |
| 22486 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp | |
| 22487 exports.whitespace = /[ \f\n\r\t\v\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]/; | |
| 22488 | |
| 22489 exports.nonzeroDigit = /^[1-9]$/; | |
| 22490 | |
| 22491 exports.decimalDigit = /^[0-9]$/; | |
| 22492 | |
| 22493 exports.regexpSyntaxChars = /[\^$\\.*+?()[\]{}|]/; | |
| 22494 | |
| 22495 exports.regexpQuantifiers = /[*+?{]/; | |
| 22496 | |
| 22497 exports.regexpControlEscapes = /[fnrtv]/; | |
| 22498 | |
| 22499 exports.regexpCharClasses = /[dDsSwW]/; | |
| 22500 | |
| 22501 // Identifies the "dot" atom in regular expressions | |
| 22502 exports.regexpDot = /(^|[^\\])(\\\\)*\./; | |
| 22503 | |
| 22504 },{}],23:[function(require,module,exports){ | |
| 22505 "use strict"; | |
| 22506 /** | |
| 22507 * A note on `__proto__`: | |
| 22508 * | |
| 22509 * This file uses ordinary objects to track identifiers that are observed in | |
| 22510 * the input source code. It creates these objects using `Object.create` so | |
| 22511 * that the tracking objects have no prototype, allowing the `__proto__` | |
| 22512 * property to be used to store a value *without* triggering the invocation of | |
| 22513 * the built-in `Object.prototype.__proto__` accessor method. Some environments | |
| 22514 * (e.g. PhantomJS) do not implement the correct semantics for property | |
| 22515 * enumeration. In those environments, methods like `Object.keys` and Lodash's | |
| 22516 * `values` do not include the property name. This file includes a number of | |
| 22517 * branches which ensure that JSHint behaves consistently in those | |
| 22518 * environments. The branches must be ignored by the test coverage verification | |
| 22519 * system because the workaround is not necessary in the environment where | |
| 22520 * coverage is verified (i.e. Node.js). | |
| 22521 */ | |
| 22522 | |
| 22523 var _ = require("lodash"); | |
| 22524 var events = require("events"); | |
| 22525 | |
| 22526 // Used to denote membership in lookup tables (a primitive value such as `true` | |
| 22527 // would be silently rejected for the property name "__proto__" in some | |
| 22528 // environments) | |
| 22529 var marker = {}; | |
| 22530 | |
| 22531 /** | |
| 22532 * A factory function for creating scope managers. A scope manager tracks | |
| 22533 * bindings, detecting when variables are referenced (through "usages"). | |
| 22534 * | |
| 22535 * @param {object} state - the global state object (see `state.js`) | |
| 22536 * @param {Array} predefined - a set of binding names for built-in bindings | |
| 22537 * provided by the environment | |
| 22538 * @param {object} exported - a hash for binding names that are intended to be | |
| 22539 * referenced in contexts beyond the current program | |
| 22540 * code | |
| 22541 * @param {object} declared - a hash for binding names that were defined as | |
| 22542 * global bindings via linting configuration | |
| 22543 * | |
| 22544 * @returns {object} - a scope manager | |
| 22545 */ | |
| 22546 var scopeManager = function(state, predefined, exported, declared) { | |
| 22547 | |
| 22548 var _current; | |
| 22549 var _scopeStack = []; | |
| 22550 | |
| 22551 function _newScope(type) { | |
| 22552 _current = { | |
| 22553 "(bindings)": Object.create(null), | |
| 22554 "(usages)": Object.create(null), | |
| 22555 "(labels)": Object.create(null), | |
| 22556 "(parent)": _current, | |
| 22557 "(type)": type, | |
| 22558 "(params)": (type === "functionparams" || type === "catchparams") ? [] : null | |
| 22559 }; | |
| 22560 _scopeStack.push(_current); | |
| 22561 } | |
| 22562 | |
| 22563 _newScope("global"); | |
| 22564 _current["(predefined)"] = predefined; | |
| 22565 | |
| 22566 var _currentFunctBody = _current; // this is the block after the params = function | |
| 22567 | |
| 22568 var usedPredefinedAndGlobals = Object.create(null); | |
| 22569 var impliedGlobals = Object.create(null); | |
| 22570 var unuseds = []; | |
| 22571 var emitter = new events.EventEmitter(); | |
| 22572 | |
| 22573 function warning(code, token) { | |
| 22574 emitter.emit("warning", { | |
| 22575 code: code, | |
| 22576 token: token, | |
| 22577 data: _.slice(arguments, 2) | |
| 22578 }); | |
| 22579 } | |
| 22580 | |
| 22581 function error(code, token) { | |
| 22582 emitter.emit("warning", { | |
| 22583 code: code, | |
| 22584 token: token, | |
| 22585 data: _.slice(arguments, 2) | |
| 22586 }); | |
| 22587 } | |
| 22588 | |
| 22589 function _setupUsages(bindingName) { | |
| 22590 if (!_current["(usages)"][bindingName]) { | |
| 22591 _current["(usages)"][bindingName] = { | |
| 22592 "(modified)": [], | |
| 22593 "(reassigned)": [], | |
| 22594 "(tokens)": [] | |
| 22595 }; | |
| 22596 } | |
| 22597 } | |
| 22598 | |
| 22599 var _getUnusedOption = function(unused_opt) { | |
| 22600 if (unused_opt === undefined) { | |
| 22601 unused_opt = state.option.unused; | |
| 22602 } | |
| 22603 | |
| 22604 if (unused_opt === true) { | |
| 22605 unused_opt = "last-param"; | |
| 22606 } | |
| 22607 | |
| 22608 return unused_opt; | |
| 22609 }; | |
| 22610 | |
| 22611 var _warnUnused = function(name, tkn, type, unused_opt) { | |
| 22612 var line = tkn.line; | |
| 22613 var chr = tkn.from; | |
| 22614 var raw_name = tkn.raw_text || name; | |
| 22615 | |
| 22616 unused_opt = _getUnusedOption(unused_opt); | |
| 22617 | |
| 22618 var warnable_types = { | |
| 22619 "vars": ["var"], | |
| 22620 "last-param": ["var", "param"], | |
| 22621 "strict": ["var", "param", "last-param"] | |
| 22622 }; | |
| 22623 | |
| 22624 if (unused_opt) { | |
| 22625 if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) { | |
| 22626 warning("W098", { line: line, from: chr }, raw_name); | |
| 22627 } | |
| 22628 } | |
| 22629 | |
| 22630 // inconsistent - see gh-1894 | |
| 22631 if (unused_opt || type === "var") { | |
| 22632 unuseds.push({ | |
| 22633 name: name, | |
| 22634 line: line, | |
| 22635 character: chr | |
| 22636 }); | |
| 22637 } | |
| 22638 }; | |
| 22639 | |
| 22640 /** | |
| 22641 * Check the current scope for unused identifiers | |
| 22642 */ | |
| 22643 function _checkForUnused() { | |
| 22644 if (_current["(type)"] !== "functionparams") { | |
| 22645 var currentBindings = _current["(bindings)"]; | |
| 22646 for (var bindingName in currentBindings) { | |
| 22647 if (currentBindings[bindingName]["(type)"] !== "exception" && | |
| 22648 currentBindings[bindingName]["(unused)"]) { | |
| 22649 _warnUnused(bindingName, currentBindings[bindingName]["(token)"], "var"); | |
| 22650 } | |
| 22651 } | |
| 22652 return; | |
| 22653 } | |
| 22654 | |
| 22655 // Check the current scope for unused parameters and issue warnings as | |
| 22656 // necessary. | |
| 22657 var params = _current["(params)"]; | |
| 22658 | |
| 22659 var param = params.pop(); | |
| 22660 var unused_opt; | |
| 22661 | |
| 22662 while (param) { | |
| 22663 var binding = _current["(bindings)"][param]; | |
| 22664 | |
| 22665 unused_opt = _getUnusedOption(state.funct["(unusedOption)"]); | |
| 22666 | |
| 22667 // 'undefined' is a special case for the common pattern where `undefined` | |
| 22668 // is used as a formal parameter name to defend against global | |
| 22669 // re-assignment, e.g. | |
| 22670 // | |
| 22671 // (function(window, undefined) { | |
| 22672 // })(); | |
| 22673 if (param === "undefined") | |
| 22674 return; | |
| 22675 | |
| 22676 if (binding["(unused)"]) { | |
| 22677 _warnUnused(param, binding["(token)"], "param", state.funct["(unusedOption)"]); | |
| 22678 } else if (unused_opt === "last-param") { | |
| 22679 return; | |
| 22680 } | |
| 22681 | |
| 22682 param = params.pop(); | |
| 22683 } | |
| 22684 } | |
| 22685 | |
| 22686 /** | |
| 22687 * Find the relevant binding's scope. The owning scope is located by first | |
| 22688 * inspecting the current scope and then moving "downward" through the stack | |
| 22689 * of scopes. | |
| 22690 * | |
| 22691 * @param {string} bindingName - the value of the identifier | |
| 22692 * | |
| 22693 * @returns {Object} - the scope in which the binding was found | |
| 22694 */ | |
| 22695 function _getBinding(bindingName) { | |
| 22696 for (var i = _scopeStack.length - 1 ; i >= 0; --i) { | |
| 22697 var scopeBindings = _scopeStack[i]["(bindings)"]; | |
| 22698 if (scopeBindings[bindingName]) { | |
| 22699 return scopeBindings; | |
| 22700 } | |
| 22701 } | |
| 22702 } | |
| 22703 | |
| 22704 /** | |
| 22705 * Determine if a given binding name has been referenced within the current | |
| 22706 * function or any function defined within. | |
| 22707 * | |
| 22708 * @param {string} bindingName - the value of the identifier | |
| 22709 * | |
| 22710 * @returns {boolean} | |
| 22711 */ | |
| 22712 function usedSoFarInCurrentFunction(bindingName) { | |
| 22713 for (var i = _scopeStack.length - 1; i >= 0; i--) { | |
| 22714 var current = _scopeStack[i]; | |
| 22715 if (current["(usages)"][bindingName]) { | |
| 22716 return current["(usages)"][bindingName]; | |
| 22717 } | |
| 22718 if (current === _currentFunctBody) { | |
| 22719 break; | |
| 22720 } | |
| 22721 } | |
| 22722 return false; | |
| 22723 } | |
| 22724 | |
| 22725 function _checkOuterShadow(bindingName, token) { | |
| 22726 | |
| 22727 // only check if shadow is outer | |
| 22728 if (state.option.shadow !== "outer") { | |
| 22729 return; | |
| 22730 } | |
| 22731 | |
| 22732 var isGlobal = _currentFunctBody["(type)"] === "global", | |
| 22733 isNewFunction = _current["(type)"] === "functionparams"; | |
| 22734 | |
| 22735 var outsideCurrentFunction = !isGlobal; | |
| 22736 for (var i = 0; i < _scopeStack.length; i++) { | |
| 22737 var stackItem = _scopeStack[i]; | |
| 22738 | |
| 22739 if (!isNewFunction && _scopeStack[i + 1] === _currentFunctBody) { | |
| 22740 outsideCurrentFunction = false; | |
| 22741 } | |
| 22742 if (outsideCurrentFunction && stackItem["(bindings)"][bindingName]) { | |
| 22743 warning("W123", token, bindingName); | |
| 22744 } | |
| 22745 if (stackItem["(labels)"][bindingName]) { | |
| 22746 warning("W123", token, bindingName); | |
| 22747 } | |
| 22748 } | |
| 22749 } | |
| 22750 | |
| 22751 function _latedefWarning(type, bindingName, token) { | |
| 22752 var isFunction; | |
| 22753 | |
| 22754 if (state.option.latedef) { | |
| 22755 isFunction = type === "function" || type === "generator function" || | |
| 22756 type === "async function"; | |
| 22757 | |
| 22758 // if either latedef is strict and this is a function | |
| 22759 // or this is not a function | |
| 22760 if ((state.option.latedef === true && isFunction) || !isFunction) { | |
| 22761 warning("W003", token, bindingName); | |
| 22762 } | |
| 22763 } | |
| 22764 } | |
| 22765 | |
| 22766 var scopeManagerInst = { | |
| 22767 | |
| 22768 on: function(names, listener) { | |
| 22769 names.split(" ").forEach(function(name) { | |
| 22770 emitter.on(name, listener); | |
| 22771 }); | |
| 22772 }, | |
| 22773 | |
| 22774 isPredefined: function(bindingName) { | |
| 22775 return !this.has(bindingName) && _.has(_scopeStack[0]["(predefined)"], bindingName); | |
| 22776 }, | |
| 22777 | |
| 22778 /** | |
| 22779 * Create a new scope within the current scope. As the topmost value, the | |
| 22780 * new scope will be interpreted as the current scope until it is | |
| 22781 * exited--see the `unstack` method. | |
| 22782 * | |
| 22783 * @param {string} [type] - The type of the scope. Valid values are | |
| 22784 * "functionparams", "catchparams" and | |
| 22785 * "functionouter" | |
| 22786 */ | |
| 22787 stack: function(type) { | |
| 22788 var previousScope = _current; | |
| 22789 _newScope(type); | |
| 22790 | |
| 22791 if (!type && previousScope["(type)"] === "functionparams") { | |
| 22792 | |
| 22793 _current["(isFuncBody)"] = true; | |
| 22794 _currentFunctBody = _current; | |
| 22795 } | |
| 22796 }, | |
| 22797 | |
| 22798 /** | |
| 22799 * Valldate all binding references and declarations in the current scope | |
| 22800 * and set the next scope on the stack as the active scope. | |
| 22801 */ | |
| 22802 unstack: function() { | |
| 22803 // jshint proto: true | |
| 22804 var subScope = _scopeStack.length > 1 ? _scopeStack[_scopeStack.length - 2] : null; | |
| 22805 var isUnstackingFunctionBody = _current === _currentFunctBody, | |
| 22806 isUnstackingFunctionParams = _current["(type)"] === "functionparams", | |
| 22807 isUnstackingFunctionOuter = _current["(type)"] === "functionouter"; | |
| 22808 | |
| 22809 var i, j, isImmutable, isFunction; | |
| 22810 var currentUsages = _current["(usages)"]; | |
| 22811 var currentBindings = _current["(bindings)"]; | |
| 22812 var usedBindingNameList = Object.keys(currentUsages); | |
| 22813 | |
| 22814 // See comment, "A note on `__proto__`" | |
| 22815 /* istanbul ignore if */ | |
| 22816 if (currentUsages.__proto__ && usedBindingNameList.indexOf("__proto__") === -1) { | |
| 22817 usedBindingNameList.push("__proto__"); | |
| 22818 } | |
| 22819 | |
| 22820 for (i = 0; i < usedBindingNameList.length; i++) { | |
| 22821 var usedBindingName = usedBindingNameList[i]; | |
| 22822 | |
| 22823 var usage = currentUsages[usedBindingName]; | |
| 22824 var usedBinding = currentBindings[usedBindingName]; | |
| 22825 if (usedBinding) { | |
| 22826 var usedBindingType = usedBinding["(type)"]; | |
| 22827 isImmutable = usedBindingType === "const" || usedBindingType === "import"; | |
| 22828 | |
| 22829 if (usedBinding["(useOutsideOfScope)"] && !state.option.funcscope) { | |
| 22830 var usedTokens = usage["(tokens)"]; | |
| 22831 for (j = 0; j < usedTokens.length; j++) { | |
| 22832 // Keep the consistency of https://github.com/jshint/jshint/issues/2409 | |
| 22833 if (usedBinding["(function)"] === usedTokens[j]["(function)"]) { | |
| 22834 error("W038", usedTokens[j], usedBindingName); | |
| 22835 } | |
| 22836 } | |
| 22837 } | |
| 22838 | |
| 22839 // mark the binding used | |
| 22840 _current["(bindings)"][usedBindingName]["(unused)"] = false; | |
| 22841 | |
| 22842 // check for modifying a const | |
| 22843 if (isImmutable && usage["(modified)"]) { | |
| 22844 for (j = 0; j < usage["(modified)"].length; j++) { | |
| 22845 error("E013", usage["(modified)"][j], usedBindingName); | |
| 22846 } | |
| 22847 } | |
| 22848 | |
| 22849 isFunction = usedBindingType === "function" || | |
| 22850 usedBindingType === "generator function" || | |
| 22851 usedBindingType === "async function"; | |
| 22852 | |
| 22853 // check for re-assigning a function declaration | |
| 22854 if ((isFunction || usedBindingType === "class") && usage["(reassigned)"]) { | |
| 22855 for (j = 0; j < usage["(reassigned)"].length; j++) { | |
| 22856 if (!usage["(reassigned)"][j].ignoreW021) { | |
| 22857 warning("W021", usage["(reassigned)"][j], usedBindingName, usedBindingType); | |
| 22858 } | |
| 22859 } | |
| 22860 } | |
| 22861 continue; | |
| 22862 } | |
| 22863 | |
| 22864 if (subScope) { | |
| 22865 var bindingType = this.bindingtype(usedBindingName); | |
| 22866 isImmutable = bindingType === "const" || | |
| 22867 (bindingType === null && _scopeStack[0]["(predefined)"][usedBindingName] === false); | |
| 22868 if (isUnstackingFunctionOuter && !isImmutable) { | |
| 22869 if (!state.funct["(outerMutables)"]) { | |
| 22870 state.funct["(outerMutables)"] = []; | |
| 22871 } | |
| 22872 state.funct["(outerMutables)"].push(usedBindingName); | |
| 22873 } | |
| 22874 | |
| 22875 // not exiting the global scope, so copy the usage down in case its an out of scope usage | |
| 22876 if (!subScope["(usages)"][usedBindingName]) { | |
| 22877 subScope["(usages)"][usedBindingName] = usage; | |
| 22878 if (isUnstackingFunctionBody) { | |
| 22879 subScope["(usages)"][usedBindingName]["(onlyUsedSubFunction)"] = true; | |
| 22880 } | |
| 22881 } else { | |
| 22882 var subScopeUsage = subScope["(usages)"][usedBindingName]; | |
| 22883 subScopeUsage["(modified)"] = subScopeUsage["(modified)"].concat(usage["(modified)"]); | |
| 22884 subScopeUsage["(tokens)"] = subScopeUsage["(tokens)"].concat(usage["(tokens)"]); | |
| 22885 subScopeUsage["(reassigned)"] = | |
| 22886 subScopeUsage["(reassigned)"].concat(usage["(reassigned)"]); | |
| 22887 } | |
| 22888 } else { | |
| 22889 // this is exiting global scope, so we finalise everything here - we are at the end of the file | |
| 22890 if (typeof _current["(predefined)"][usedBindingName] === "boolean") { | |
| 22891 | |
| 22892 // remove the declared token, so we know it is used | |
| 22893 delete declared[usedBindingName]; | |
| 22894 | |
| 22895 // note it as used so it can be reported | |
| 22896 usedPredefinedAndGlobals[usedBindingName] = marker; | |
| 22897 | |
| 22898 // check for re-assigning a read-only (set to false) predefined | |
| 22899 if (_current["(predefined)"][usedBindingName] === false && usage["(reassigned)"]) { | |
| 22900 for (j = 0; j < usage["(reassigned)"].length; j++) { | |
| 22901 if (!usage["(reassigned)"][j].ignoreW020) { | |
| 22902 warning("W020", usage["(reassigned)"][j]); | |
| 22903 } | |
| 22904 } | |
| 22905 } | |
| 22906 } | |
| 22907 else { | |
| 22908 // binding usage is not predefined and we have not found a declaration | |
| 22909 // so report as undeclared | |
| 22910 for (j = 0; j < usage["(tokens)"].length; j++) { | |
| 22911 var undefinedToken = usage["(tokens)"][j]; | |
| 22912 // if its not a forgiven undefined (e.g. typof x) | |
| 22913 if (!undefinedToken.forgiveUndef) { | |
| 22914 // if undef is on and undef was on when the token was defined | |
| 22915 if (state.option.undef && !undefinedToken.ignoreUndef) { | |
| 22916 warning("W117", undefinedToken, usedBindingName); | |
| 22917 } | |
| 22918 if (impliedGlobals[usedBindingName]) { | |
| 22919 impliedGlobals[usedBindingName].line.push(undefinedToken.line); | |
| 22920 } else { | |
| 22921 impliedGlobals[usedBindingName] = { | |
| 22922 name: usedBindingName, | |
| 22923 line: [undefinedToken.line] | |
| 22924 }; | |
| 22925 } | |
| 22926 } | |
| 22927 } | |
| 22928 } | |
| 22929 } | |
| 22930 } | |
| 22931 | |
| 22932 // if exiting the global scope, we can warn about declared globals that haven't been used yet | |
| 22933 if (!subScope) { | |
| 22934 Object.keys(declared) | |
| 22935 .forEach(function(bindingNotUsed) { | |
| 22936 _warnUnused(bindingNotUsed, declared[bindingNotUsed], "var"); | |
| 22937 }); | |
| 22938 } | |
| 22939 | |
| 22940 // If this is not a function boundary, transfer function-scoped bindings to | |
| 22941 // the parent block (a rough simulation of variable hoisting). Previously | |
| 22942 // existing bindings in the parent block should take precedence so that | |
| 22943 // prior usages are not discarded. | |
| 22944 if (subScope && !isUnstackingFunctionBody && | |
| 22945 !isUnstackingFunctionParams && !isUnstackingFunctionOuter) { | |
| 22946 var bindingNames = Object.keys(currentBindings); | |
| 22947 for (i = 0; i < bindingNames.length; i++) { | |
| 22948 | |
| 22949 var defBindingName = bindingNames[i]; | |
| 22950 var defBinding = currentBindings[defBindingName]; | |
| 22951 | |
| 22952 if (!defBinding["(blockscoped)"] && defBinding["(type)"] !== "exception") { | |
| 22953 var shadowed = subScope["(bindings)"][defBindingName]; | |
| 22954 | |
| 22955 // Do not overwrite a binding if it exists in the parent scope | |
| 22956 // because it is shared by adjacent blocks. Copy the `unused` | |
| 22957 // property so that any references found within the current block | |
| 22958 // are counted toward that higher-level declaration. | |
| 22959 if (shadowed) { | |
| 22960 shadowed["(unused)"] &= defBinding["(unused)"]; | |
| 22961 | |
| 22962 // "Hoist" the variable to the parent block, decorating the binding | |
| 22963 // so that future references, though technically valid, can be | |
| 22964 // reported as "out-of-scope" in the absence of the `funcscope` | |
| 22965 // option. | |
| 22966 } else { | |
| 22967 defBinding["(useOutsideOfScope)"] = | |
| 22968 // Do not warn about out-of-scope usages in the global scope | |
| 22969 _currentFunctBody["(type)"] !== "global" && | |
| 22970 // When a higher scope contains a binding for the binding, the | |
| 22971 // binding is a re-declaration and should not prompt "used | |
| 22972 // out-of-scope" warnings. | |
| 22973 !this.funct.has(defBindingName, { excludeCurrent: true }); | |
| 22974 | |
| 22975 subScope["(bindings)"][defBindingName] = defBinding; | |
| 22976 } | |
| 22977 | |
| 22978 delete currentBindings[defBindingName]; | |
| 22979 } | |
| 22980 } | |
| 22981 } | |
| 22982 | |
| 22983 _checkForUnused(); | |
| 22984 | |
| 22985 _scopeStack.pop(); | |
| 22986 if (isUnstackingFunctionBody) { | |
| 22987 _currentFunctBody = _scopeStack[_.findLastIndex(_scopeStack, function(scope) { | |
| 22988 // if function or if global (which is at the bottom so it will only return true if we call back) | |
| 22989 return scope["(isFuncBody)"] || scope["(type)"] === "global"; | |
| 22990 })]; | |
| 22991 } | |
| 22992 | |
| 22993 _current = subScope; | |
| 22994 }, | |
| 22995 | |
| 22996 /** | |
| 22997 * Add a function parameter to the current scope. | |
| 22998 * | |
| 22999 * @param {string} bindingName - the value of the identifier | |
| 23000 * @param {Token} token | |
| 23001 * @param {string} [type] - binding type; defaults to "param" | |
| 23002 */ | |
| 23003 addParam: function(bindingName, token, type) { | |
| 23004 type = type || "param"; | |
| 23005 | |
| 23006 if (type === "exception") { | |
| 23007 // if defined in the current function | |
| 23008 var previouslyDefinedBindingType = this.funct.bindingtype(bindingName); | |
| 23009 if (previouslyDefinedBindingType && previouslyDefinedBindingType !== "exception") { | |
| 23010 // and has not been used yet in the current function scope | |
| 23011 if (!state.option.node) { | |
| 23012 warning("W002", state.tokens.next, bindingName); | |
| 23013 } | |
| 23014 } | |
| 23015 | |
| 23016 if (state.isStrict() && (bindingName === "arguments" || bindingName === "eval")) { | |
| 23017 warning("E008", token); | |
| 23018 } | |
| 23019 } | |
| 23020 | |
| 23021 // The variable was declared in the current scope | |
| 23022 if (_.has(_current["(bindings)"], bindingName)) { | |
| 23023 _current["(bindings)"][bindingName].duplicated = true; | |
| 23024 | |
| 23025 // The variable was declared in an outer scope | |
| 23026 } else { | |
| 23027 // if this scope has the variable defined, it's a re-definition error | |
| 23028 _checkOuterShadow(bindingName, token); | |
| 23029 | |
| 23030 _current["(bindings)"][bindingName] = { | |
| 23031 "(type)" : type, | |
| 23032 "(token)": token, | |
| 23033 "(unused)": true }; | |
| 23034 | |
| 23035 _current["(params)"].push(bindingName); | |
| 23036 } | |
| 23037 | |
| 23038 if (_.has(_current["(usages)"], bindingName)) { | |
| 23039 var usage = _current["(usages)"][bindingName]; | |
| 23040 // if its in a sub function it is not necessarily an error, just latedef | |
| 23041 if (usage["(onlyUsedSubFunction)"]) { | |
| 23042 _latedefWarning(type, bindingName, token); | |
| 23043 } else { | |
| 23044 // this is a clear illegal usage for block scoped variables | |
| 23045 warning("E056", token, bindingName, type); | |
| 23046 } | |
| 23047 } | |
| 23048 }, | |
| 23049 | |
| 23050 validateParams: function(isArrow) { | |
| 23051 var isStrict = state.isStrict(); | |
| 23052 var currentFunctParamScope = _currentFunctBody["(parent)"]; | |
| 23053 // From ECMAScript 2017: | |
| 23054 // | |
| 23055 // > 14.1.2Static Semantics: Early Errors | |
| 23056 // > | |
| 23057 // > [...] | |
| 23058 // > - It is a Syntax Error if IsSimpleParameterList of | |
| 23059 // > FormalParameterList is false and BoundNames of FormalParameterList | |
| 23060 // > contains any duplicate elements. | |
| 23061 var isSimple = state.funct['(hasSimpleParams)']; | |
| 23062 // Method definitions are defined in terms of UniqueFormalParameters, so | |
| 23063 // they cannot support duplicate parameter names regardless of strict | |
| 23064 // mode. | |
| 23065 var isMethod = state.funct["(method)"]; | |
| 23066 | |
| 23067 if (!currentFunctParamScope["(params)"]) { | |
| 23068 /* istanbul ignore next */ | |
| 23069 return; | |
| 23070 } | |
| 23071 | |
| 23072 currentFunctParamScope["(params)"].forEach(function(bindingName) { | |
| 23073 var binding = currentFunctParamScope["(bindings)"][bindingName]; | |
| 23074 | |
| 23075 if (binding.duplicated) { | |
| 23076 if (isStrict || isArrow || isMethod || !isSimple) { | |
| 23077 warning("E011", binding["(token)"], bindingName); | |
| 23078 } else if (state.option.shadow !== true) { | |
| 23079 warning("W004", binding["(token)"], bindingName); | |
| 23080 } | |
| 23081 } | |
| 23082 | |
| 23083 if (isStrict && (bindingName === "arguments" || bindingName === "eval")) { | |
| 23084 warning("E008", binding["(token)"]); | |
| 23085 } | |
| 23086 }); | |
| 23087 }, | |
| 23088 | |
| 23089 getUsedOrDefinedGlobals: function() { | |
| 23090 // jshint proto: true | |
| 23091 var list = Object.keys(usedPredefinedAndGlobals); | |
| 23092 | |
| 23093 // See comment, "A note on `__proto__`" | |
| 23094 /* istanbul ignore if */ | |
| 23095 if (usedPredefinedAndGlobals.__proto__ === marker && | |
| 23096 list.indexOf("__proto__") === -1) { | |
| 23097 list.push("__proto__"); | |
| 23098 } | |
| 23099 | |
| 23100 return list; | |
| 23101 }, | |
| 23102 | |
| 23103 /** | |
| 23104 * Get an array of implied globals | |
| 23105 * | |
| 23106 * @returns {Array.<{ name: string, line: Array.<number>}>} | |
| 23107 */ | |
| 23108 getImpliedGlobals: function() { | |
| 23109 // jshint proto: true | |
| 23110 var values = _.values(impliedGlobals); | |
| 23111 var hasProto = false; | |
| 23112 | |
| 23113 // See comment, "A note on `__proto__`" | |
| 23114 if (impliedGlobals.__proto__) { | |
| 23115 hasProto = values.some(function(value) { | |
| 23116 return value.name === "__proto__"; | |
| 23117 }); | |
| 23118 | |
| 23119 /* istanbul ignore if */ | |
| 23120 if (!hasProto) { | |
| 23121 values.push(impliedGlobals.__proto__); | |
| 23122 } | |
| 23123 } | |
| 23124 | |
| 23125 return values; | |
| 23126 }, | |
| 23127 | |
| 23128 /** | |
| 23129 * Get an array of objects describing unused bindings. | |
| 23130 * | |
| 23131 * @returns {Array<Object>} | |
| 23132 */ | |
| 23133 getUnuseds: function() { | |
| 23134 return unuseds; | |
| 23135 }, | |
| 23136 | |
| 23137 /** | |
| 23138 * Determine if a given name has been defined in the current scope or any | |
| 23139 * lower scope. | |
| 23140 * | |
| 23141 * @param {string} bindingName - the value of the identifier | |
| 23142 * | |
| 23143 * @return {boolean} | |
| 23144 */ | |
| 23145 has: function(bindingName) { | |
| 23146 return Boolean(_getBinding(bindingName)); | |
| 23147 }, | |
| 23148 | |
| 23149 /** | |
| 23150 * Retrieve binding described by `bindingName` or null | |
| 23151 * | |
| 23152 * @param {string} bindingName - the value of the identifier | |
| 23153 * | |
| 23154 * @returns {string|null} - the type of the binding or `null` if no such | |
| 23155 * binding exists | |
| 23156 */ | |
| 23157 bindingtype: function(bindingName) { | |
| 23158 var scopeBindings = _getBinding(bindingName); | |
| 23159 if (scopeBindings) { | |
| 23160 return scopeBindings[bindingName]["(type)"]; | |
| 23161 } | |
| 23162 return null; | |
| 23163 }, | |
| 23164 | |
| 23165 /** | |
| 23166 * For the exported options, indicating a variable is used outside the file | |
| 23167 * | |
| 23168 * @param {string} bindingName - the value of the identifier | |
| 23169 */ | |
| 23170 addExported: function(bindingName) { | |
| 23171 var globalBindings = _scopeStack[0]["(bindings)"]; | |
| 23172 if (_.has(declared, bindingName)) { | |
| 23173 // remove the declared token, so we know it is used | |
| 23174 delete declared[bindingName]; | |
| 23175 } else if (_.has(globalBindings, bindingName)) { | |
| 23176 globalBindings[bindingName]["(unused)"] = false; | |
| 23177 } else { | |
| 23178 for (var i = 1; i < _scopeStack.length; i++) { | |
| 23179 var scope = _scopeStack[i]; | |
| 23180 // if `scope.(type)` is not defined, it is a block scope | |
| 23181 if (!scope["(type)"]) { | |
| 23182 if (_.has(scope["(bindings)"], bindingName) && | |
| 23183 !scope["(bindings)"][bindingName]["(blockscoped)"]) { | |
| 23184 scope["(bindings)"][bindingName]["(unused)"] = false; | |
| 23185 return; | |
| 23186 } | |
| 23187 } else { | |
| 23188 break; | |
| 23189 } | |
| 23190 } | |
| 23191 exported[bindingName] = true; | |
| 23192 } | |
| 23193 }, | |
| 23194 | |
| 23195 /** | |
| 23196 * Mark a binding as "exported" by an ES2015 module | |
| 23197 * | |
| 23198 * @param {string} bindingName - the value of the identifier | |
| 23199 * @param {object} token | |
| 23200 */ | |
| 23201 setExported: function(bindingName, token) { | |
| 23202 this.block.use(bindingName, token); | |
| 23203 }, | |
| 23204 | |
| 23205 /** | |
| 23206 * Mark a binding as "initialized." This is necessary to enforce the | |
| 23207 * "temporal dead zone" (TDZ) of block-scoped bindings which are not | |
| 23208 * hoisted. | |
| 23209 * | |
| 23210 * @param {string} bindingName - the value of the identifier | |
| 23211 */ | |
| 23212 initialize: function(bindingName) { | |
| 23213 if (_current["(bindings)"][bindingName]) { | |
| 23214 _current["(bindings)"][bindingName]["(initialized)"] = true; | |
| 23215 } | |
| 23216 }, | |
| 23217 | |
| 23218 /** | |
| 23219 * Create a new binding and add it to the current scope. Delegates to the | |
| 23220 * internal `block.add` or `func.add` methods depending on the type. | |
| 23221 * Produces warnings and errors as necessary. | |
| 23222 * | |
| 23223 * @param {string} bindingName | |
| 23224 * @param {Object} opts | |
| 23225 * @param {String} opts.type - the type of the binding e.g. "param", "var", | |
| 23226 * "let, "const", "import", "function", | |
| 23227 * "generator function", "async function", | |
| 23228 * "async generator function" | |
| 23229 * @param {object} opts.token - the token pointing at the declaration | |
| 23230 * @param {boolean} opts.initialized - whether the binding should be | |
| 23231 * created in an "initialized" state. | |
| 23232 */ | |
| 23233 addbinding: function(bindingName, opts) { | |
| 23234 | |
| 23235 var type = opts.type; | |
| 23236 var token = opts.token; | |
| 23237 var isblockscoped = type === "let" || type === "const" || | |
| 23238 type === "class" || type === "import" || type === "generator function" || | |
| 23239 type === "async function" || type === "async generator function"; | |
| 23240 var ishoisted = type === "function" || type === "generator function" || | |
| 23241 type === "async function" || type === "import"; | |
| 23242 var isexported = (isblockscoped ? _current : _currentFunctBody)["(type)"] === "global" && | |
| 23243 _.has(exported, bindingName); | |
| 23244 | |
| 23245 // outer shadow check (inner is only on non-block scoped) | |
| 23246 _checkOuterShadow(bindingName, token); | |
| 23247 | |
| 23248 if (state.isStrict() && (bindingName === "arguments" || bindingName === "eval")) { | |
| 23249 warning("E008", token); | |
| 23250 } | |
| 23251 | |
| 23252 if (isblockscoped) { | |
| 23253 | |
| 23254 var declaredInCurrentScope = _current["(bindings)"][bindingName]; | |
| 23255 // for block scoped variables, params are seen in the current scope as the root function | |
| 23256 // scope, so check these too. | |
| 23257 if (!declaredInCurrentScope && _current === _currentFunctBody && | |
| 23258 _current["(type)"] !== "global") { | |
| 23259 declaredInCurrentScope = !!_currentFunctBody["(parent)"]["(bindings)"][bindingName]; | |
| 23260 } | |
| 23261 | |
| 23262 // if its not already defined (which is an error, so ignore) and is used in TDZ | |
| 23263 if (!declaredInCurrentScope && _current["(usages)"][bindingName]) { | |
| 23264 var usage = _current["(usages)"][bindingName]; | |
| 23265 // if its in a sub function it is not necessarily an error, just latedef | |
| 23266 if (usage["(onlyUsedSubFunction)"] || ishoisted) { | |
| 23267 _latedefWarning(type, bindingName, token); | |
| 23268 } else if (!ishoisted) { | |
| 23269 // this is a clear illegal usage for block scoped variables | |
| 23270 warning("E056", token, bindingName, type); | |
| 23271 } | |
| 23272 } | |
| 23273 | |
| 23274 // If this scope has already declared a binding with the same name, | |
| 23275 // then this represents a redeclaration error if: | |
| 23276 // | |
| 23277 // 1. it is a "hoisted" block-scoped binding within a block. For | |
| 23278 // instance: generator functions may be redeclared in the global | |
| 23279 // scope but not within block statements | |
| 23280 // 2. this is not a "hoisted" block-scoped binding | |
| 23281 if (declaredInCurrentScope && | |
| 23282 (!ishoisted || (_current["(type)"] !== "global" || type === "import"))) { | |
| 23283 warning("E011", token, bindingName); | |
| 23284 } | |
| 23285 else if (state.option.shadow === "outer") { | |
| 23286 | |
| 23287 // if shadow is outer, for block scope we want to detect any shadowing within this function | |
| 23288 if (scopeManagerInst.funct.has(bindingName)) { | |
| 23289 warning("W004", token, bindingName); | |
| 23290 } | |
| 23291 } | |
| 23292 | |
| 23293 scopeManagerInst.block.add( | |
| 23294 bindingName, type, token, !isexported, opts.initialized | |
| 23295 ); | |
| 23296 | |
| 23297 } else { | |
| 23298 | |
| 23299 var declaredInCurrentFunctionScope = scopeManagerInst.funct.has(bindingName); | |
| 23300 | |
| 23301 // check for late definition, ignore if already declared | |
| 23302 if (!declaredInCurrentFunctionScope && usedSoFarInCurrentFunction(bindingName)) { | |
| 23303 _latedefWarning(type, bindingName, token); | |
| 23304 } | |
| 23305 | |
| 23306 // defining with a var or a function when a block scope variable of the same name | |
| 23307 // is in scope is an error | |
| 23308 if (scopeManagerInst.funct.has(bindingName, { onlyBlockscoped: true })) { | |
| 23309 warning("E011", token, bindingName); | |
| 23310 } else if (state.option.shadow !== true) { | |
| 23311 // now since we didn't get any block scope variables, test for var/function | |
| 23312 // shadowing | |
| 23313 if (declaredInCurrentFunctionScope && bindingName !== "__proto__") { | |
| 23314 | |
| 23315 // see https://github.com/jshint/jshint/issues/2400 | |
| 23316 if (_currentFunctBody["(type)"] !== "global") { | |
| 23317 warning("W004", token, bindingName); | |
| 23318 } | |
| 23319 } | |
| 23320 } | |
| 23321 | |
| 23322 scopeManagerInst.funct.add(bindingName, type, token, !isexported); | |
| 23323 | |
| 23324 if (_currentFunctBody["(type)"] === "global" && !state.impliedClosure()) { | |
| 23325 usedPredefinedAndGlobals[bindingName] = marker; | |
| 23326 } | |
| 23327 } | |
| 23328 }, | |
| 23329 | |
| 23330 funct: { | |
| 23331 /** | |
| 23332 * Return the type of the provided binding given certain options | |
| 23333 * | |
| 23334 * @param {string} bindingName | |
| 23335 * @param {Object=} [options] | |
| 23336 * @param {boolean} [options.onlyBlockscoped] - only include block scoped | |
| 23337 * bindings | |
| 23338 * @param {boolean} [options.excludeParams] - exclude the param scope | |
| 23339 * @param {boolean} [options.excludeCurrent] - exclude the current scope | |
| 23340 * | |
| 23341 * @returns {String} | |
| 23342 */ | |
| 23343 bindingtype: function(bindingName, options) { | |
| 23344 var onlyBlockscoped = options && options.onlyBlockscoped; | |
| 23345 var excludeParams = options && options.excludeParams; | |
| 23346 var currentScopeIndex = _scopeStack.length - (options && options.excludeCurrent ? 2 : 1); | |
| 23347 for (var i = currentScopeIndex; i >= 0; i--) { | |
| 23348 var current = _scopeStack[i]; | |
| 23349 if (current["(bindings)"][bindingName] && | |
| 23350 (!onlyBlockscoped || current["(bindings)"][bindingName]["(blockscoped)"])) { | |
| 23351 return current["(bindings)"][bindingName]["(type)"]; | |
| 23352 } | |
| 23353 var scopeCheck = excludeParams ? _scopeStack[ i - 1 ] : current; | |
| 23354 if (scopeCheck && scopeCheck["(type)"] === "functionparams") { | |
| 23355 return null; | |
| 23356 } | |
| 23357 } | |
| 23358 return null; | |
| 23359 }, | |
| 23360 | |
| 23361 /** | |
| 23362 * Determine whether a `break` statement label exists in the function | |
| 23363 * scope. | |
| 23364 * | |
| 23365 * @param {string} labelName - the value of the identifier | |
| 23366 * | |
| 23367 * @returns {boolean} | |
| 23368 */ | |
| 23369 hasLabel: function(labelName) { | |
| 23370 for (var i = _scopeStack.length - 1; i >= 0; i--) { | |
| 23371 var current = _scopeStack[i]; | |
| 23372 | |
| 23373 if (current["(labels)"][labelName]) { | |
| 23374 return true; | |
| 23375 } | |
| 23376 if (current["(type)"] === "functionparams") { | |
| 23377 return false; | |
| 23378 } | |
| 23379 } | |
| 23380 return false; | |
| 23381 }, | |
| 23382 | |
| 23383 /** | |
| 23384 * Determine if a given name has been defined in the current function | |
| 23385 * scope. | |
| 23386 * | |
| 23387 * @param {string} bindingName - the value of the identifier | |
| 23388 * @param {object} options - options as supported by the | |
| 23389 * `funct.bindingtype` method | |
| 23390 * | |
| 23391 * @return {boolean} | |
| 23392 */ | |
| 23393 has: function(bindingName, options) { | |
| 23394 return Boolean(this.bindingtype(bindingName, options)); | |
| 23395 }, | |
| 23396 | |
| 23397 /** | |
| 23398 * Create a new function-scoped binding and add it to the current scope. | |
| 23399 * See the `block.add` method for coresponding logic to create | |
| 23400 * block-scoped bindings. | |
| 23401 * | |
| 23402 * @param {string} bindingName - the value of the identifier | |
| 23403 * @param {string} type - the type of the binding; either "function" or | |
| 23404 * "var" | |
| 23405 * @param {object} tok - the token that triggered the definition | |
| 23406 * @param {boolean} unused - `true` if the binding has not been | |
| 23407 * referenced | |
| 23408 */ | |
| 23409 add: function(bindingName, type, tok, unused) { | |
| 23410 _current["(bindings)"][bindingName] = { | |
| 23411 "(type)" : type, | |
| 23412 "(token)": tok, | |
| 23413 "(blockscoped)": false, | |
| 23414 "(function)": _currentFunctBody, | |
| 23415 "(unused)": unused }; | |
| 23416 } | |
| 23417 }, | |
| 23418 | |
| 23419 block: { | |
| 23420 | |
| 23421 /** | |
| 23422 * Determine whether the current block scope is the global scope. | |
| 23423 * | |
| 23424 * @returns Boolean | |
| 23425 */ | |
| 23426 isGlobal: function() { | |
| 23427 return _current["(type)"] === "global"; | |
| 23428 }, | |
| 23429 | |
| 23430 /** | |
| 23431 * Resolve a reference to a binding and mark the corresponding binding as | |
| 23432 * "used." | |
| 23433 * | |
| 23434 * @param {string} bindingName - the value of the identifier | |
| 23435 * @param {object} token - the token value that triggered the reference | |
| 23436 */ | |
| 23437 use: function(bindingName, token) { | |
| 23438 // If the name resolves to a parameter of the current function, then do | |
| 23439 // not store usage. This is because in cases such as the following: | |
| 23440 // | |
| 23441 // function(a) { | |
| 23442 // var a; | |
| 23443 // a = a; | |
| 23444 // } | |
| 23445 // | |
| 23446 // the usage of `a` will resolve to the parameter, not to the unset | |
| 23447 // variable binding. | |
| 23448 var paramScope = _currentFunctBody["(parent)"]; | |
| 23449 if (paramScope && paramScope["(bindings)"][bindingName] && | |
| 23450 paramScope["(bindings)"][bindingName]["(type)"] === "param") { | |
| 23451 | |
| 23452 // then check its not declared by a block scope variable | |
| 23453 if (!scopeManagerInst.funct.has(bindingName, | |
| 23454 { excludeParams: true, onlyBlockscoped: true })) { | |
| 23455 paramScope["(bindings)"][bindingName]["(unused)"] = false; | |
| 23456 } | |
| 23457 } | |
| 23458 | |
| 23459 if (token && (state.ignored.W117 || state.option.undef === false)) { | |
| 23460 token.ignoreUndef = true; | |
| 23461 } | |
| 23462 | |
| 23463 _setupUsages(bindingName); | |
| 23464 | |
| 23465 _current["(usages)"][bindingName]["(onlyUsedSubFunction)"] = false; | |
| 23466 | |
| 23467 if (token) { | |
| 23468 token["(function)"] = _currentFunctBody; | |
| 23469 _current["(usages)"][bindingName]["(tokens)"].push(token); | |
| 23470 } | |
| 23471 | |
| 23472 // Block-scoped bindings can't be used within their initializer due to | |
| 23473 // "temporal dead zone" (TDZ) restrictions. | |
| 23474 var binding = _current["(bindings)"][bindingName]; | |
| 23475 if (binding && binding["(blockscoped)"] && !binding["(initialized)"]) { | |
| 23476 error("E056", token, bindingName, binding["(type)"]); | |
| 23477 } | |
| 23478 }, | |
| 23479 | |
| 23480 reassign: function(bindingName, token) { | |
| 23481 token.ignoreW020 = state.ignored.W020; | |
| 23482 token.ignoreW021 = state.ignored.W021; | |
| 23483 | |
| 23484 this.modify(bindingName, token); | |
| 23485 | |
| 23486 _current["(usages)"][bindingName]["(reassigned)"].push(token); | |
| 23487 }, | |
| 23488 | |
| 23489 modify: function(bindingName, token) { | |
| 23490 | |
| 23491 _setupUsages(bindingName); | |
| 23492 | |
| 23493 _current["(usages)"][bindingName]["(onlyUsedSubFunction)"] = false; | |
| 23494 _current["(usages)"][bindingName]["(modified)"].push(token); | |
| 23495 }, | |
| 23496 | |
| 23497 /** | |
| 23498 * Create a new block-scoped binding and add it to the current scope. See | |
| 23499 * the `funct.add` method for coresponding logic to create | |
| 23500 * function-scoped bindings. | |
| 23501 * | |
| 23502 * @param {string} bindingName - the value of the identifier | |
| 23503 * @param {string} type - the type of the binding; one of "class", | |
| 23504 * "const", "function", "import", or "let" | |
| 23505 * @param {object} tok - the token that triggered the definition | |
| 23506 * @param {boolean} unused - `true` if the binding has not been | |
| 23507 * referenced | |
| 23508 * @param {boolean} initialized - `true` if the binding has been | |
| 23509 * initialized (as is the case with | |
| 23510 * bindings created via `import` | |
| 23511 * declarations) | |
| 23512 */ | |
| 23513 add: function(bindingName, type, tok, unused, initialized) { | |
| 23514 _current["(bindings)"][bindingName] = { | |
| 23515 "(type)" : type, | |
| 23516 "(token)": tok, | |
| 23517 "(initialized)": !!initialized, | |
| 23518 "(blockscoped)": true, | |
| 23519 "(unused)": unused }; | |
| 23520 }, | |
| 23521 | |
| 23522 addLabel: function(labelName, opts) { | |
| 23523 var token = opts.token; | |
| 23524 if (scopeManagerInst.funct.hasLabel(labelName)) { | |
| 23525 warning("E011", token, labelName); | |
| 23526 } | |
| 23527 else if (state.option.shadow === "outer") { | |
| 23528 if (scopeManagerInst.funct.has(labelName)) { | |
| 23529 warning("W004", token, labelName); | |
| 23530 } else { | |
| 23531 _checkOuterShadow(labelName, token); | |
| 23532 } | |
| 23533 } | |
| 23534 _current["(labels)"][labelName] = token; | |
| 23535 } | |
| 23536 } | |
| 23537 }; | |
| 23538 return scopeManagerInst; | |
| 23539 }; | |
| 23540 | |
| 23541 module.exports = scopeManager; | |
| 23542 | |
| 23543 },{"events":9,"lodash":16}],24:[function(require,module,exports){ | |
| 23544 "use strict"; | |
| 23545 var NameStack = require("./name-stack.js"); | |
| 23546 | |
| 23547 var state = { | |
| 23548 syntax: {}, | |
| 23549 | |
| 23550 /** | |
| 23551 * Determine if the code currently being linted is strict mode code. | |
| 23552 * | |
| 23553 * @returns {boolean} | |
| 23554 */ | |
| 23555 isStrict: function() { | |
| 23556 return this.directive["use strict"] || this.inClassBody || | |
| 23557 this.option.module || this.option.strict === "implied"; | |
| 23558 }, | |
| 23559 | |
| 23560 /** | |
| 23561 * Determine if the current state warrants a warning for statements outside | |
| 23562 * of strict mode code. | |
| 23563 * | |
| 23564 * While emitting warnings based on function scope would be more intuitive | |
| 23565 * (and less noisy), JSHint observes statement-based semantics in order to | |
| 23566 * preserve legacy behavior. | |
| 23567 * | |
| 23568 * This method does not take the state of the parser into account, making no | |
| 23569 * distinction between global code and function code. Because the "missing | |
| 23570 * 'use strict'" warning is *also* reported at function boundaries, this | |
| 23571 * function interprets `strict` option values `true` and `undefined` as | |
| 23572 * equivalent. | |
| 23573 */ | |
| 23574 stmtMissingStrict: function() { | |
| 23575 if (this.option.strict === "global") { | |
| 23576 return true; | |
| 23577 } | |
| 23578 | |
| 23579 if (this.option.strict === false) { | |
| 23580 return false; | |
| 23581 } | |
| 23582 | |
| 23583 if (this.option.globalstrict) { | |
| 23584 return true; | |
| 23585 } | |
| 23586 | |
| 23587 return false; | |
| 23588 }, | |
| 23589 | |
| 23590 allowsGlobalUsd: function() { | |
| 23591 return this.option.strict === "global" || this.option.globalstrict || | |
| 23592 this.option.module || this.impliedClosure(); | |
| 23593 }, | |
| 23594 | |
| 23595 /** | |
| 23596 * Determine if the current configuration describes an environment that is | |
| 23597 * wrapped in an immediately-invoked function expression prior to evaluation. | |
| 23598 * | |
| 23599 * @returns {boolean} | |
| 23600 */ | |
| 23601 impliedClosure: function() { | |
| 23602 return this.option.node || this.option.phantom || this.option.browserify; | |
| 23603 }, | |
| 23604 | |
| 23605 // Assumption: chronologically ES3 < ES5 < ES6 < Moz | |
| 23606 | |
| 23607 inMoz: function() { | |
| 23608 return this.option.moz; | |
| 23609 }, | |
| 23610 | |
| 23611 /** | |
| 23612 * Determine if constructs introduced in ECMAScript 10 should be accepted. | |
| 23613 * | |
| 23614 * @returns {boolean} | |
| 23615 */ | |
| 23616 inES10: function() { | |
| 23617 return this.esVersion >= 10; | |
| 23618 }, | |
| 23619 | |
| 23620 /** | |
| 23621 * Determine if constructs introduced in ECMAScript 9 should be accepted. | |
| 23622 * | |
| 23623 * @returns {boolean} | |
| 23624 */ | |
| 23625 inES9: function() { | |
| 23626 return this.esVersion >= 9; | |
| 23627 }, | |
| 23628 | |
| 23629 /** | |
| 23630 * Determine if constructs introduced in ECMAScript 8 should be accepted. | |
| 23631 * | |
| 23632 * @returns {boolean} | |
| 23633 */ | |
| 23634 inES8: function() { | |
| 23635 return this.esVersion >= 8; | |
| 23636 }, | |
| 23637 | |
| 23638 /** | |
| 23639 * Determine if constructs introduced in ECMAScript 7 should be accepted. | |
| 23640 * | |
| 23641 * @returns {boolean} | |
| 23642 */ | |
| 23643 inES7: function() { | |
| 23644 return this.esVersion >= 7; | |
| 23645 }, | |
| 23646 | |
| 23647 /** | |
| 23648 * Determine if constructs introduced in ECMAScript 6 should be accepted. | |
| 23649 * | |
| 23650 * @param {boolean} strict - When `true`, do not interpret the `moz` option | |
| 23651 * as ECMAScript 6 | |
| 23652 * | |
| 23653 * @returns {boolean} | |
| 23654 */ | |
| 23655 inES6: function(strict) { | |
| 23656 if (!strict && this.option.moz) { | |
| 23657 return true; | |
| 23658 } | |
| 23659 | |
| 23660 return this.esVersion >= 6; | |
| 23661 }, | |
| 23662 | |
| 23663 /** | |
| 23664 * Determine if constructs introduced in ECMAScript 5 should be accepted. | |
| 23665 * | |
| 23666 * @returns {boolean} | |
| 23667 */ | |
| 23668 inES5: function() { | |
| 23669 return !this.esVersion || this.esVersion >= 5 || this.option.moz; | |
| 23670 }, | |
| 23671 | |
| 23672 /** | |
| 23673 * Determine the current version of the input language by inspecting the | |
| 23674 * value of all ECMAScript-version-related options. This logic is necessary | |
| 23675 * to ensure compatibility with deprecated options `es3`, `es5`, and | |
| 23676 * `esnext`, and it may be drastically simplified when those options are | |
| 23677 * removed. | |
| 23678 * | |
| 23679 * @returns {string|null} - the name of any incompatible option detected, | |
| 23680 * `null` otherwise | |
| 23681 */ | |
| 23682 inferEsVersion: function() { | |
| 23683 var badOpt = null; | |
| 23684 | |
| 23685 if (this.option.esversion) { | |
| 23686 if (this.option.es3) { | |
| 23687 badOpt = "es3"; | |
| 23688 } else if (this.option.es5) { | |
| 23689 badOpt = "es5"; | |
| 23690 } else if (this.option.esnext) { | |
| 23691 badOpt = "esnext"; | |
| 23692 } | |
| 23693 | |
| 23694 if (badOpt) { | |
| 23695 return badOpt; | |
| 23696 } | |
| 23697 | |
| 23698 if (this.option.esversion === 2015) { | |
| 23699 this.esVersion = 6; | |
| 23700 } else { | |
| 23701 this.esVersion = this.option.esversion; | |
| 23702 } | |
| 23703 } else if (this.option.es3) { | |
| 23704 this.esVersion = 3; | |
| 23705 } else if (this.option.esnext) { | |
| 23706 this.esVersion = 6; | |
| 23707 } | |
| 23708 | |
| 23709 return null; | |
| 23710 }, | |
| 23711 | |
| 23712 reset: function() { | |
| 23713 this.tokens = { | |
| 23714 prev: null, | |
| 23715 next: null, | |
| 23716 curr: null | |
| 23717 }; | |
| 23718 | |
| 23719 this.option = { unstable: {} }; | |
| 23720 this.esVersion = 5; | |
| 23721 this.funct = null; | |
| 23722 this.ignored = {}; | |
| 23723 this.directive = Object.create(null); | |
| 23724 this.jsonMode = false; | |
| 23725 this.lines = []; | |
| 23726 this.tab = ""; | |
| 23727 this.cache = {}; // Node.JS doesn't have Map. Sniff. | |
| 23728 this.ignoredLines = {}; | |
| 23729 this.forinifcheckneeded = false; | |
| 23730 this.nameStack = new NameStack(); | |
| 23731 this.inClassBody = false; | |
| 23732 } | |
| 23733 }; | |
| 23734 | |
| 23735 exports.state = state; | |
| 23736 | |
| 23737 },{"./name-stack.js":19}],25:[function(require,module,exports){ | |
| 23738 "use strict"; | |
| 23739 | |
| 23740 exports.register = function(linter) { | |
| 23741 // Check for properties named __proto__. This special property was | |
| 23742 // deprecated and then re-introduced for ES6. | |
| 23743 | |
| 23744 linter.on("Identifier", function style_scanProto(data) { | |
| 23745 if (linter.getOption("proto")) { | |
| 23746 return; | |
| 23747 } | |
| 23748 | |
| 23749 if (data.name === "__proto__") { | |
| 23750 linter.warn("W103", { | |
| 23751 line: data.line, | |
| 23752 char: data.char, | |
| 23753 data: [ data.name, "6" ] | |
| 23754 }); | |
| 23755 } | |
| 23756 }); | |
| 23757 | |
| 23758 // Check for properties named __iterator__. This is a special property | |
| 23759 // available only in browsers with JavaScript 1.7 implementation, but | |
| 23760 // it is deprecated for ES6 | |
| 23761 | |
| 23762 linter.on("Identifier", function style_scanIterator(data) { | |
| 23763 if (linter.getOption("iterator")) { | |
| 23764 return; | |
| 23765 } | |
| 23766 | |
| 23767 if (data.name === "__iterator__") { | |
| 23768 linter.warn("W103", { | |
| 23769 line: data.line, | |
| 23770 char: data.char, | |
| 23771 data: [ data.name ] | |
| 23772 }); | |
| 23773 } | |
| 23774 }); | |
| 23775 | |
| 23776 // Check that all identifiers are using camelCase notation. | |
| 23777 // Exceptions: names like MY_VAR and _myVar. | |
| 23778 | |
| 23779 linter.on("Identifier", function style_scanCamelCase(data) { | |
| 23780 if (!linter.getOption("camelcase")) { | |
| 23781 return; | |
| 23782 } | |
| 23783 | |
| 23784 if (data.name.replace(/^_+|_+$/g, "").indexOf("_") > -1 && !data.name.match(/^[A-Z0-9_]*$/)) { | |
| 23785 linter.warn("W106", { | |
| 23786 line: data.line, | |
| 23787 char: data.char, | |
| 23788 data: [ data.name ] | |
| 23789 }); | |
| 23790 } | |
| 23791 }); | |
| 23792 | |
| 23793 // Enforce consistency in style of quoting. | |
| 23794 | |
| 23795 linter.on("String", function style_scanQuotes(data) { | |
| 23796 var quotmark = linter.getOption("quotmark"); | |
| 23797 var code; | |
| 23798 | |
| 23799 if (!quotmark) { | |
| 23800 return; | |
| 23801 } | |
| 23802 | |
| 23803 // If quotmark is set to 'single' warn about all double-quotes. | |
| 23804 | |
| 23805 if (quotmark === "single" && data.quote !== "'") { | |
| 23806 code = "W109"; | |
| 23807 } | |
| 23808 | |
| 23809 // If quotmark is set to 'double' warn about all single-quotes. | |
| 23810 | |
| 23811 if (quotmark === "double" && data.quote !== "\"") { | |
| 23812 code = "W108"; | |
| 23813 } | |
| 23814 | |
| 23815 // If quotmark is set to true, remember the first quotation style | |
| 23816 // and then warn about all others. | |
| 23817 | |
| 23818 if (quotmark === true) { | |
| 23819 if (!linter.getCache("quotmark")) { | |
| 23820 linter.setCache("quotmark", data.quote); | |
| 23821 } | |
| 23822 | |
| 23823 if (linter.getCache("quotmark") !== data.quote) { | |
| 23824 code = "W110"; | |
| 23825 } | |
| 23826 } | |
| 23827 | |
| 23828 if (code) { | |
| 23829 linter.warn(code, { | |
| 23830 line: data.line, | |
| 23831 char: data.char, | |
| 23832 }); | |
| 23833 } | |
| 23834 }); | |
| 23835 | |
| 23836 linter.on("Number", function style_scanNumbers(data) { | |
| 23837 if (data.value.charAt(0) === ".") { | |
| 23838 // Warn about a leading decimal point. | |
| 23839 linter.warn("W008", { | |
| 23840 line: data.line, | |
| 23841 char: data.char, | |
| 23842 data: [ data.value ] | |
| 23843 }); | |
| 23844 } | |
| 23845 | |
| 23846 if (data.value.substr(data.value.length - 1) === ".") { | |
| 23847 // Warn about a trailing decimal point. | |
| 23848 linter.warn("W047", { | |
| 23849 line: data.line, | |
| 23850 char: data.char, | |
| 23851 data: [ data.value ] | |
| 23852 }); | |
| 23853 } | |
| 23854 | |
| 23855 if (/^00+/.test(data.value)) { | |
| 23856 // Multiple leading zeroes. | |
| 23857 linter.warn("W046", { | |
| 23858 line: data.line, | |
| 23859 char: data.char, | |
| 23860 data: [ data.value ] | |
| 23861 }); | |
| 23862 } | |
| 23863 }); | |
| 23864 | |
| 23865 // Warn about script URLs. | |
| 23866 | |
| 23867 linter.on("String", function style_scanJavaScriptURLs(data) { | |
| 23868 var re = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i; | |
| 23869 | |
| 23870 if (linter.getOption("scripturl")) { | |
| 23871 return; | |
| 23872 } | |
| 23873 | |
| 23874 if (re.test(data.value)) { | |
| 23875 linter.warn("W107", { | |
| 23876 line: data.line, | |
| 23877 char: data.char | |
| 23878 }); | |
| 23879 } | |
| 23880 }); | |
| 23881 }; | |
| 23882 | |
| 23883 },{}],26:[function(require,module,exports){ | |
| 23884 // jshint -W001 | |
| 23885 | |
| 23886 "use strict"; | |
| 23887 | |
| 23888 // Identifiers provided by the ECMAScript standard. | |
| 23889 | |
| 23890 exports.reservedVars = { | |
| 23891 NaN : false, | |
| 23892 undefined : false | |
| 23893 }; | |
| 23894 | |
| 23895 exports.ecmaIdentifiers = { | |
| 23896 3: { | |
| 23897 Array : false, | |
| 23898 Boolean : false, | |
| 23899 Date : false, | |
| 23900 decodeURI : false, | |
| 23901 decodeURIComponent : false, | |
| 23902 encodeURI : false, | |
| 23903 encodeURIComponent : false, | |
| 23904 Error : false, | |
| 23905 "eval" : false, | |
| 23906 EvalError : false, | |
| 23907 Function : false, | |
| 23908 hasOwnProperty : false, | |
| 23909 Infinity : false, | |
| 23910 isFinite : false, | |
| 23911 isNaN : false, | |
| 23912 Math : false, | |
| 23913 Number : false, | |
| 23914 Object : false, | |
| 23915 parseInt : false, | |
| 23916 parseFloat : false, | |
| 23917 RangeError : false, | |
| 23918 ReferenceError : false, | |
| 23919 RegExp : false, | |
| 23920 String : false, | |
| 23921 SyntaxError : false, | |
| 23922 TypeError : false, | |
| 23923 URIError : false | |
| 23924 }, | |
| 23925 5: { | |
| 23926 JSON : false | |
| 23927 }, | |
| 23928 6: { | |
| 23929 ArrayBuffer : false, | |
| 23930 DataView : false, | |
| 23931 Float32Array : false, | |
| 23932 Float64Array : false, | |
| 23933 Int8Array : false, | |
| 23934 Int16Array : false, | |
| 23935 Int32Array : false, | |
| 23936 Map : false, | |
| 23937 Promise : false, | |
| 23938 Proxy : false, | |
| 23939 Reflect : false, | |
| 23940 Set : false, | |
| 23941 Symbol : false, | |
| 23942 Uint8Array : false, | |
| 23943 Uint16Array : false, | |
| 23944 Uint32Array : false, | |
| 23945 Uint8ClampedArray : false, | |
| 23946 WeakMap : false, | |
| 23947 WeakSet : false | |
| 23948 }, | |
| 23949 8: { | |
| 23950 Atomics : false, | |
| 23951 SharedArrayBuffer : false | |
| 23952 } | |
| 23953 }; | |
| 23954 | |
| 23955 // Global variables commonly provided by a web browser environment. | |
| 23956 | |
| 23957 exports.browser = { | |
| 23958 Audio : false, | |
| 23959 Blob : false, | |
| 23960 addEventListener : false, // EventTarget | |
| 23961 applicationCache : false, | |
| 23962 atob : false, // WindowOrWorkerGlobalScope | |
| 23963 blur : false, | |
| 23964 btoa : false, // WindowOrWorkerGlobalScope | |
| 23965 cancelAnimationFrame : false, | |
| 23966 CanvasGradient : false, | |
| 23967 CanvasPattern : false, | |
| 23968 CanvasRenderingContext2D: false, | |
| 23969 CSS : false, | |
| 23970 CSSImportRule : false, | |
| 23971 CSSGroupingRule : false, | |
| 23972 CSSMarginRule : false, | |
| 23973 CSSMediaRule : false, | |
| 23974 CSSNamespaceRule : false, | |
| 23975 CSSPageRule : false, | |
| 23976 CSSRule : false, | |
| 23977 CSSRuleList : false, | |
| 23978 CSSStyleDeclaration : false, | |
| 23979 CSSStyleRule : false, | |
| 23980 CSSStyleSheet : false, | |
| 23981 clearInterval : false, // WindowOrWorkerGlobalScope | |
| 23982 clearTimeout : false, // WindowOrWorkerGlobalScope | |
| 23983 close : false, | |
| 23984 closed : false, | |
| 23985 Comment : false, | |
| 23986 CompositionEvent : false, | |
| 23987 createImageBitmap : false, // WindowOrWorkerGlobalScope | |
| 23988 CustomEvent : false, | |
| 23989 DOMParser : false, | |
| 23990 defaultStatus : false, | |
| 23991 dispatchEvent : false, // EventTarget | |
| 23992 Document : false, | |
| 23993 document : false, | |
| 23994 DocumentFragment : false, | |
| 23995 Element : false, | |
| 23996 ElementTimeControl : false, | |
| 23997 Event : false, | |
| 23998 event : false, | |
| 23999 fetch : false, | |
| 24000 File : false, | |
| 24001 FileList : false, | |
| 24002 FileReader : false, | |
| 24003 FormData : false, | |
| 24004 focus : false, | |
| 24005 frames : false, | |
| 24006 getComputedStyle : false, | |
| 24007 Headers : false, | |
| 24008 HTMLAnchorElement : false, | |
| 24009 HTMLAreaElement : false, | |
| 24010 HTMLAudioElement : false, | |
| 24011 HTMLBaseElement : false, | |
| 24012 HTMLBlockquoteElement: false, | |
| 24013 HTMLBodyElement : false, | |
| 24014 HTMLBRElement : false, | |
| 24015 HTMLButtonElement : false, | |
| 24016 HTMLCanvasElement : false, | |
| 24017 HTMLCollection : false, | |
| 24018 HTMLDataElement : false, | |
| 24019 HTMLDataListElement : false, | |
| 24020 HTMLDetailsElement : false, | |
| 24021 HTMLDialogElement : false, | |
| 24022 HTMLDirectoryElement : false, | |
| 24023 HTMLDivElement : false, | |
| 24024 HTMLDListElement : false, | |
| 24025 HTMLElement : false, | |
| 24026 HTMLEmbedElement : false, | |
| 24027 HTMLFieldSetElement : false, | |
| 24028 HTMLFontElement : false, | |
| 24029 HTMLFormElement : false, | |
| 24030 HTMLFrameElement : false, | |
| 24031 HTMLFrameSetElement : false, | |
| 24032 HTMLHeadElement : false, | |
| 24033 HTMLHeadingElement : false, | |
| 24034 HTMLHRElement : false, | |
| 24035 HTMLHtmlElement : false, | |
| 24036 HTMLIFrameElement : false, | |
| 24037 HTMLImageElement : false, | |
| 24038 HTMLInputElement : false, | |
| 24039 /* HTMLIsIndexElement was removed from the WHATWG HTML spec; | |
| 24040 see https://github.com/whatwg/html/pull/1095. | |
| 24041 HTMLIsIndexElement has been removed from browsers; see: | |
| 24042 • Chromium Removal: https://codereview.chromium.org/96653004/ | |
| 24043 • Gecko Removal: https://bugzilla.mozilla.org/show_bug.cgi?id=1266495 | |
| 24044 • WebKit Removal: https://bugs.webkit.org/show_bug.cgi?id=7139. | |
| 24045 See also the discussion at https://github.com/jshint/jshint/pull/3222. */ | |
| 24046 HTMLIsIndexElement : false, | |
| 24047 HTMLLabelElement : false, | |
| 24048 HTMLLayerElement : false, | |
| 24049 HTMLLegendElement : false, | |
| 24050 HTMLLIElement : false, | |
| 24051 HTMLLinkElement : false, | |
| 24052 HTMLMapElement : false, | |
| 24053 HTMLMarqueeElement : false, | |
| 24054 HTMLMediaElement : false, | |
| 24055 HTMLMenuElement : false, | |
| 24056 HTMLMetaElement : false, | |
| 24057 HTMLMeterElement : false, | |
| 24058 HTMLModElement : false, | |
| 24059 HTMLObjectElement : false, | |
| 24060 HTMLOListElement : false, | |
| 24061 HTMLOptGroupElement : false, | |
| 24062 HTMLOptionElement : false, | |
| 24063 HTMLParagraphElement : false, | |
| 24064 HTMLParamElement : false, | |
| 24065 HTMLPictureElement : false, | |
| 24066 HTMLPreElement : false, | |
| 24067 HTMLProgressElement : false, | |
| 24068 HTMLQuoteElement : false, | |
| 24069 HTMLScriptElement : false, | |
| 24070 HTMLSelectElement : false, | |
| 24071 HTMLSlotElement : false, | |
| 24072 HTMLSourceElement : false, | |
| 24073 HTMLStyleElement : false, | |
| 24074 HTMLTableCaptionElement: false, | |
| 24075 HTMLTableCellElement : false, | |
| 24076 HTMLTableColElement : false, | |
| 24077 HTMLTableElement : false, | |
| 24078 HTMLTableRowElement : false, | |
| 24079 HTMLTableSectionElement: false, | |
| 24080 HTMLTemplateElement : false, | |
| 24081 HTMLTextAreaElement : false, | |
| 24082 HTMLTimeElement : false, | |
| 24083 HTMLTitleElement : false, | |
| 24084 HTMLTrackElement : false, | |
| 24085 HTMLUListElement : false, | |
| 24086 HTMLVideoElement : false, | |
| 24087 history : false, | |
| 24088 Image : false, | |
| 24089 IntersectionObserver : false, | |
| 24090 Intl : false, | |
| 24091 length : false, | |
| 24092 localStorage : false, | |
| 24093 location : false, | |
| 24094 matchMedia : false, | |
| 24095 MediaList : false, | |
| 24096 MediaRecorder : false, | |
| 24097 MessageChannel : false, | |
| 24098 MessageEvent : false, | |
| 24099 MessagePort : false, | |
| 24100 MouseEvent : false, | |
| 24101 moveBy : false, | |
| 24102 moveTo : false, | |
| 24103 MutationObserver : false, | |
| 24104 name : false, | |
| 24105 Node : false, | |
| 24106 NodeFilter : false, | |
| 24107 NodeList : false, | |
| 24108 Notification : false, | |
| 24109 navigator : false, | |
| 24110 onbeforeunload : true, | |
| 24111 onblur : true, | |
| 24112 onerror : true, | |
| 24113 onfocus : true, | |
| 24114 onload : true, | |
| 24115 onresize : true, | |
| 24116 onunload : true, | |
| 24117 open : false, | |
| 24118 openDatabase : false, | |
| 24119 opener : false, | |
| 24120 Option : false, | |
| 24121 origin : false, // WindowOrWorkerGlobalScope | |
| 24122 parent : false, | |
| 24123 performance : false, | |
| 24124 print : false, | |
| 24125 queueMicrotask : false, // WindowOrWorkerGlobalScope | |
| 24126 Range : false, | |
| 24127 requestAnimationFrame : false, | |
| 24128 removeEventListener : false, // EventTarget | |
| 24129 Request : false, | |
| 24130 resizeBy : false, | |
| 24131 resizeTo : false, | |
| 24132 Response : false, | |
| 24133 screen : false, | |
| 24134 scroll : false, | |
| 24135 scrollBy : false, | |
| 24136 scrollTo : false, | |
| 24137 sessionStorage : false, | |
| 24138 setInterval : false, // WindowOrWorkerGlobalScope | |
| 24139 setTimeout : false, // WindowOrWorkerGlobalScope | |
| 24140 SharedWorker : false, | |
| 24141 status : false, | |
| 24142 Storage : false, | |
| 24143 StyleSheet : false, | |
| 24144 SVGAElement : false, | |
| 24145 SVGAltGlyphDefElement: false, | |
| 24146 SVGAltGlyphElement : false, | |
| 24147 SVGAltGlyphItemElement: false, | |
| 24148 SVGAngle : false, | |
| 24149 SVGAnimateColorElement: false, | |
| 24150 SVGAnimateElement : false, | |
| 24151 SVGAnimateMotionElement: false, | |
| 24152 SVGAnimateTransformElement: false, | |
| 24153 SVGAnimatedAngle : false, | |
| 24154 SVGAnimatedBoolean : false, | |
| 24155 SVGAnimatedEnumeration: false, | |
| 24156 SVGAnimatedInteger : false, | |
| 24157 SVGAnimatedLength : false, | |
| 24158 SVGAnimatedLengthList: false, | |
| 24159 SVGAnimatedNumber : false, | |
| 24160 SVGAnimatedNumberList: false, | |
| 24161 SVGAnimatedPathData : false, | |
| 24162 SVGAnimatedPoints : false, | |
| 24163 SVGAnimatedPreserveAspectRatio: false, | |
| 24164 SVGAnimatedRect : false, | |
| 24165 SVGAnimatedString : false, | |
| 24166 SVGAnimatedTransformList: false, | |
| 24167 SVGAnimationElement : false, | |
| 24168 SVGCSSRule : false, | |
| 24169 SVGCircleElement : false, | |
| 24170 SVGClipPathElement : false, | |
| 24171 SVGColor : false, | |
| 24172 SVGColorProfileElement: false, | |
| 24173 SVGColorProfileRule : false, | |
| 24174 SVGComponentTransferFunctionElement: false, | |
| 24175 SVGCursorElement : false, | |
| 24176 SVGDefsElement : false, | |
| 24177 SVGDescElement : false, | |
| 24178 SVGDocument : false, | |
| 24179 SVGElement : false, | |
| 24180 SVGElementInstance : false, | |
| 24181 SVGElementInstanceList: false, | |
| 24182 SVGEllipseElement : false, | |
| 24183 SVGExternalResourcesRequired: false, | |
| 24184 SVGFEBlendElement : false, | |
| 24185 SVGFEColorMatrixElement: false, | |
| 24186 SVGFEComponentTransferElement: false, | |
| 24187 SVGFECompositeElement: false, | |
| 24188 SVGFEConvolveMatrixElement: false, | |
| 24189 SVGFEDiffuseLightingElement: false, | |
| 24190 SVGFEDisplacementMapElement: false, | |
| 24191 SVGFEDistantLightElement: false, | |
| 24192 SVGFEFloodElement : false, | |
| 24193 SVGFEFuncAElement : false, | |
| 24194 SVGFEFuncBElement : false, | |
| 24195 SVGFEFuncGElement : false, | |
| 24196 SVGFEFuncRElement : false, | |
| 24197 SVGFEGaussianBlurElement: false, | |
| 24198 SVGFEImageElement : false, | |
| 24199 SVGFEMergeElement : false, | |
| 24200 SVGFEMergeNodeElement: false, | |
| 24201 SVGFEMorphologyElement: false, | |
| 24202 SVGFEOffsetElement : false, | |
| 24203 SVGFEPointLightElement: false, | |
| 24204 SVGFESpecularLightingElement: false, | |
| 24205 SVGFESpotLightElement: false, | |
| 24206 SVGFETileElement : false, | |
| 24207 SVGFETurbulenceElement: false, | |
| 24208 SVGFilterElement : false, | |
| 24209 SVGFilterPrimitiveStandardAttributes: false, | |
| 24210 SVGFitToViewBox : false, | |
| 24211 SVGFontElement : false, | |
| 24212 SVGFontFaceElement : false, | |
| 24213 SVGFontFaceFormatElement: false, | |
| 24214 SVGFontFaceNameElement: false, | |
| 24215 SVGFontFaceSrcElement: false, | |
| 24216 SVGFontFaceUriElement: false, | |
| 24217 SVGForeignObjectElement: false, | |
| 24218 SVGGElement : false, | |
| 24219 SVGGlyphElement : false, | |
| 24220 SVGGlyphRefElement : false, | |
| 24221 SVGGradientElement : false, | |
| 24222 SVGHKernElement : false, | |
| 24223 SVGICCColor : false, | |
| 24224 SVGImageElement : false, | |
| 24225 SVGLangSpace : false, | |
| 24226 SVGLength : false, | |
| 24227 SVGLengthList : false, | |
| 24228 SVGLineElement : false, | |
| 24229 SVGLinearGradientElement: false, | |
| 24230 SVGLocatable : false, | |
| 24231 SVGMPathElement : false, | |
| 24232 SVGMarkerElement : false, | |
| 24233 SVGMaskElement : false, | |
| 24234 SVGMatrix : false, | |
| 24235 SVGMetadataElement : false, | |
| 24236 SVGMissingGlyphElement: false, | |
| 24237 SVGNumber : false, | |
| 24238 SVGNumberList : false, | |
| 24239 SVGPaint : false, | |
| 24240 SVGPathElement : false, | |
| 24241 SVGPathSeg : false, | |
| 24242 SVGPathSegArcAbs : false, | |
| 24243 SVGPathSegArcRel : false, | |
| 24244 SVGPathSegClosePath : false, | |
| 24245 SVGPathSegCurvetoCubicAbs: false, | |
| 24246 SVGPathSegCurvetoCubicRel: false, | |
| 24247 SVGPathSegCurvetoCubicSmoothAbs: false, | |
| 24248 SVGPathSegCurvetoCubicSmoothRel: false, | |
| 24249 SVGPathSegCurvetoQuadraticAbs: false, | |
| 24250 SVGPathSegCurvetoQuadraticRel: false, | |
| 24251 SVGPathSegCurvetoQuadraticSmoothAbs: false, | |
| 24252 SVGPathSegCurvetoQuadraticSmoothRel: false, | |
| 24253 SVGPathSegLinetoAbs : false, | |
| 24254 SVGPathSegLinetoHorizontalAbs: false, | |
| 24255 SVGPathSegLinetoHorizontalRel: false, | |
| 24256 SVGPathSegLinetoRel : false, | |
| 24257 SVGPathSegLinetoVerticalAbs: false, | |
| 24258 SVGPathSegLinetoVerticalRel: false, | |
| 24259 SVGPathSegList : false, | |
| 24260 SVGPathSegMovetoAbs : false, | |
| 24261 SVGPathSegMovetoRel : false, | |
| 24262 SVGPatternElement : false, | |
| 24263 SVGPoint : false, | |
| 24264 SVGPointList : false, | |
| 24265 SVGPolygonElement : false, | |
| 24266 SVGPolylineElement : false, | |
| 24267 SVGPreserveAspectRatio: false, | |
| 24268 SVGRadialGradientElement: false, | |
| 24269 SVGRect : false, | |
| 24270 SVGRectElement : false, | |
| 24271 SVGRenderingIntent : false, | |
| 24272 SVGSVGElement : false, | |
| 24273 SVGScriptElement : false, | |
| 24274 SVGSetElement : false, | |
| 24275 SVGStopElement : false, | |
| 24276 SVGStringList : false, | |
| 24277 SVGStylable : false, | |
| 24278 SVGStyleElement : false, | |
| 24279 SVGSwitchElement : false, | |
| 24280 SVGSymbolElement : false, | |
| 24281 SVGTRefElement : false, | |
| 24282 SVGTSpanElement : false, | |
| 24283 SVGTests : false, | |
| 24284 SVGTextContentElement: false, | |
| 24285 SVGTextElement : false, | |
| 24286 SVGTextPathElement : false, | |
| 24287 SVGTextPositioningElement: false, | |
| 24288 SVGTitleElement : false, | |
| 24289 SVGTransform : false, | |
| 24290 SVGTransformList : false, | |
| 24291 SVGTransformable : false, | |
| 24292 SVGURIReference : false, | |
| 24293 SVGUnitTypes : false, | |
| 24294 SVGUseElement : false, | |
| 24295 SVGVKernElement : false, | |
| 24296 SVGViewElement : false, | |
| 24297 SVGViewSpec : false, | |
| 24298 SVGZoomAndPan : false, | |
| 24299 Text : false, | |
| 24300 TextDecoder : false, | |
| 24301 TextEncoder : false, | |
| 24302 TimeEvent : false, | |
| 24303 top : false, | |
| 24304 URL : false, | |
| 24305 WebGLActiveInfo : false, | |
| 24306 WebGLBuffer : false, | |
| 24307 WebGLContextEvent : false, | |
| 24308 WebGLFramebuffer : false, | |
| 24309 WebGLProgram : false, | |
| 24310 WebGLRenderbuffer : false, | |
| 24311 WebGLRenderingContext: false, | |
| 24312 WebGLShader : false, | |
| 24313 WebGLShaderPrecisionFormat: false, | |
| 24314 WebGLTexture : false, | |
| 24315 WebGLUniformLocation : false, | |
| 24316 WebSocket : false, | |
| 24317 window : false, | |
| 24318 Window : false, | |
| 24319 Worker : false, | |
| 24320 XDomainRequest : false, | |
| 24321 XMLDocument : false, | |
| 24322 XMLHttpRequest : false, | |
| 24323 XMLSerializer : false, | |
| 24324 XPathEvaluator : false, | |
| 24325 XPathException : false, | |
| 24326 XPathExpression : false, | |
| 24327 XPathNamespace : false, | |
| 24328 XPathNSResolver : false, | |
| 24329 XPathResult : false | |
| 24330 }; | |
| 24331 | |
| 24332 exports.devel = { | |
| 24333 alert : false, | |
| 24334 confirm: false, | |
| 24335 console: false, | |
| 24336 Debug : false, | |
| 24337 opera : false, | |
| 24338 prompt : false | |
| 24339 }; | |
| 24340 | |
| 24341 exports.worker = { | |
| 24342 addEventListener : true, // EventTarget | |
| 24343 atob : true, // WindowOrWorkerGlobalScope | |
| 24344 btoa : true, // WindowOrWorkerGlobalScope | |
| 24345 clearInterval : true, // WindowOrWorkerGlobalScope | |
| 24346 clearTimeout : true, // WindowOrWorkerGlobalScope | |
| 24347 createImageBitmap : true, // WindowOrWorkerGlobalScope | |
| 24348 dispatchEvent : true, // EventTarget | |
| 24349 importScripts : true, | |
| 24350 onmessage : true, | |
| 24351 origin : true, // WindowOrWorkerGlobalScope | |
| 24352 postMessage : true, | |
| 24353 queueMicrotask : true, // WindowOrWorkerGlobalScope | |
| 24354 removeEventListener : true, // EventTarget | |
| 24355 self : true, | |
| 24356 setInterval : true, // WindowOrWorkerGlobalScope | |
| 24357 setTimeout : true, // WindowOrWorkerGlobalScope | |
| 24358 FileReaderSync : true | |
| 24359 }; | |
| 24360 | |
| 24361 // Widely adopted global names that are not part of ECMAScript standard | |
| 24362 exports.nonstandard = { | |
| 24363 escape : false, | |
| 24364 unescape: false | |
| 24365 }; | |
| 24366 | |
| 24367 // Globals provided by popular JavaScript environments. | |
| 24368 | |
| 24369 exports.couch = { | |
| 24370 "require" : false, | |
| 24371 respond : false, | |
| 24372 getRow : false, | |
| 24373 emit : false, | |
| 24374 send : false, | |
| 24375 start : false, | |
| 24376 sum : false, | |
| 24377 log : false, | |
| 24378 exports : false, | |
| 24379 module : false, | |
| 24380 provides : false | |
| 24381 }; | |
| 24382 | |
| 24383 exports.node = { | |
| 24384 __filename : false, | |
| 24385 __dirname : false, | |
| 24386 arguments : false, | |
| 24387 GLOBAL : false, | |
| 24388 global : false, | |
| 24389 module : false, | |
| 24390 require : false, | |
| 24391 | |
| 24392 // These globals are writeable because Node allows the following | |
| 24393 // usage pattern: var Buffer = require("buffer").Buffer; | |
| 24394 | |
| 24395 Buffer : true, | |
| 24396 console : true, | |
| 24397 exports : true, | |
| 24398 process : true, | |
| 24399 setTimeout : true, | |
| 24400 clearTimeout : true, | |
| 24401 setInterval : true, | |
| 24402 clearInterval : true, | |
| 24403 setImmediate : true, // v0.9.1+ | |
| 24404 clearImmediate: true // v0.9.1+ | |
| 24405 }; | |
| 24406 | |
| 24407 exports.browserify = { | |
| 24408 __filename : false, | |
| 24409 __dirname : false, | |
| 24410 global : false, | |
| 24411 module : false, | |
| 24412 require : false, | |
| 24413 Buffer : true, | |
| 24414 exports : true, | |
| 24415 process : true | |
| 24416 }; | |
| 24417 | |
| 24418 exports.phantom = { | |
| 24419 phantom : true, | |
| 24420 require : true, | |
| 24421 WebPage : true, | |
| 24422 console : true, // in examples, but undocumented | |
| 24423 exports : true // v1.7+ | |
| 24424 }; | |
| 24425 | |
| 24426 exports.qunit = { | |
| 24427 asyncTest : false, | |
| 24428 deepEqual : false, | |
| 24429 equal : false, | |
| 24430 expect : false, | |
| 24431 module : false, | |
| 24432 notDeepEqual : false, | |
| 24433 notEqual : false, | |
| 24434 notOk : false, | |
| 24435 notPropEqual : false, | |
| 24436 notStrictEqual : false, | |
| 24437 ok : false, | |
| 24438 propEqual : false, | |
| 24439 QUnit : false, | |
| 24440 raises : false, | |
| 24441 start : false, | |
| 24442 stop : false, | |
| 24443 strictEqual : false, | |
| 24444 test : false, | |
| 24445 "throws" : false | |
| 24446 }; | |
| 24447 | |
| 24448 exports.rhino = { | |
| 24449 arguments : false, | |
| 24450 defineClass : false, | |
| 24451 deserialize : false, | |
| 24452 gc : false, | |
| 24453 help : false, | |
| 24454 importClass : false, | |
| 24455 importPackage: false, | |
| 24456 "java" : false, | |
| 24457 load : false, | |
| 24458 loadClass : false, | |
| 24459 Packages : false, | |
| 24460 print : false, | |
| 24461 quit : false, | |
| 24462 readFile : false, | |
| 24463 readUrl : false, | |
| 24464 runCommand : false, | |
| 24465 seal : false, | |
| 24466 serialize : false, | |
| 24467 spawn : false, | |
| 24468 sync : false, | |
| 24469 toint32 : false, | |
| 24470 version : false | |
| 24471 }; | |
| 24472 | |
| 24473 exports.shelljs = { | |
| 24474 target : false, | |
| 24475 echo : false, | |
| 24476 exit : false, | |
| 24477 cd : false, | |
| 24478 pwd : false, | |
| 24479 ls : false, | |
| 24480 find : false, | |
| 24481 cp : false, | |
| 24482 rm : false, | |
| 24483 mv : false, | |
| 24484 mkdir : false, | |
| 24485 test : false, | |
| 24486 cat : false, | |
| 24487 sed : false, | |
| 24488 grep : false, | |
| 24489 which : false, | |
| 24490 dirs : false, | |
| 24491 pushd : false, | |
| 24492 popd : false, | |
| 24493 env : false, | |
| 24494 exec : false, | |
| 24495 chmod : false, | |
| 24496 config : false, | |
| 24497 error : false, | |
| 24498 tempdir : false | |
| 24499 }; | |
| 24500 | |
| 24501 exports.typed = { | |
| 24502 ArrayBuffer : false, | |
| 24503 ArrayBufferView : false, | |
| 24504 DataView : false, | |
| 24505 Float32Array : false, | |
| 24506 Float64Array : false, | |
| 24507 Int16Array : false, | |
| 24508 Int32Array : false, | |
| 24509 Int8Array : false, | |
| 24510 Uint16Array : false, | |
| 24511 Uint32Array : false, | |
| 24512 Uint8Array : false, | |
| 24513 Uint8ClampedArray : false | |
| 24514 }; | |
| 24515 | |
| 24516 exports.wsh = { | |
| 24517 ActiveXObject : true, | |
| 24518 Enumerator : true, | |
| 24519 GetObject : true, | |
| 24520 ScriptEngine : true, | |
| 24521 ScriptEngineBuildVersion : true, | |
| 24522 ScriptEngineMajorVersion : true, | |
| 24523 ScriptEngineMinorVersion : true, | |
| 24524 VBArray : true, | |
| 24525 WSH : true, | |
| 24526 WScript : true, | |
| 24527 XDomainRequest : true | |
| 24528 }; | |
| 24529 | |
| 24530 // Globals provided by popular JavaScript libraries. | |
| 24531 | |
| 24532 exports.dojo = { | |
| 24533 dojo : false, | |
| 24534 dijit : false, | |
| 24535 dojox : false, | |
| 24536 define : false, | |
| 24537 "require": false | |
| 24538 }; | |
| 24539 | |
| 24540 exports.jquery = { | |
| 24541 "$" : false, | |
| 24542 jQuery : false | |
| 24543 }; | |
| 24544 | |
| 24545 exports.mootools = { | |
| 24546 "$" : false, | |
| 24547 "$$" : false, | |
| 24548 Asset : false, | |
| 24549 Browser : false, | |
| 24550 Chain : false, | |
| 24551 Class : false, | |
| 24552 Color : false, | |
| 24553 Cookie : false, | |
| 24554 Core : false, | |
| 24555 Document : false, | |
| 24556 DomReady : false, | |
| 24557 DOMEvent : false, | |
| 24558 DOMReady : false, | |
| 24559 Drag : false, | |
| 24560 Element : false, | |
| 24561 Elements : false, | |
| 24562 Event : false, | |
| 24563 Events : false, | |
| 24564 Fx : false, | |
| 24565 Group : false, | |
| 24566 Hash : false, | |
| 24567 HtmlTable : false, | |
| 24568 IFrame : false, | |
| 24569 IframeShim : false, | |
| 24570 InputValidator: false, | |
| 24571 instanceOf : false, | |
| 24572 Keyboard : false, | |
| 24573 Locale : false, | |
| 24574 Mask : false, | |
| 24575 MooTools : false, | |
| 24576 Native : false, | |
| 24577 Options : false, | |
| 24578 OverText : false, | |
| 24579 Request : false, | |
| 24580 Scroller : false, | |
| 24581 Slick : false, | |
| 24582 Slider : false, | |
| 24583 Sortables : false, | |
| 24584 Spinner : false, | |
| 24585 Swiff : false, | |
| 24586 Tips : false, | |
| 24587 Type : false, | |
| 24588 typeOf : false, | |
| 24589 URI : false, | |
| 24590 Window : false | |
| 24591 }; | |
| 24592 | |
| 24593 exports.prototypejs = { | |
| 24594 "$" : false, | |
| 24595 "$$" : false, | |
| 24596 "$A" : false, | |
| 24597 "$F" : false, | |
| 24598 "$H" : false, | |
| 24599 "$R" : false, | |
| 24600 "$break" : false, | |
| 24601 "$continue" : false, | |
| 24602 "$w" : false, | |
| 24603 Abstract : false, | |
| 24604 Ajax : false, | |
| 24605 Class : false, | |
| 24606 Enumerable : false, | |
| 24607 Element : false, | |
| 24608 Event : false, | |
| 24609 Field : false, | |
| 24610 Form : false, | |
| 24611 Hash : false, | |
| 24612 Insertion : false, | |
| 24613 ObjectRange : false, | |
| 24614 PeriodicalExecuter: false, | |
| 24615 Position : false, | |
| 24616 Prototype : false, | |
| 24617 Selector : false, | |
| 24618 Template : false, | |
| 24619 Toggle : false, | |
| 24620 Try : false, | |
| 24621 Autocompleter : false, | |
| 24622 Builder : false, | |
| 24623 Control : false, | |
| 24624 Draggable : false, | |
| 24625 Draggables : false, | |
| 24626 Droppables : false, | |
| 24627 Effect : false, | |
| 24628 Sortable : false, | |
| 24629 SortableObserver : false, | |
| 24630 Sound : false, | |
| 24631 Scriptaculous : false | |
| 24632 }; | |
| 24633 | |
| 24634 exports.yui = { | |
| 24635 YUI : false, | |
| 24636 Y : false, | |
| 24637 YUI_config: false | |
| 24638 }; | |
| 24639 | |
| 24640 exports.mocha = { | |
| 24641 // Global (for config etc.) | |
| 24642 mocha : false, | |
| 24643 // BDD | |
| 24644 describe : false, | |
| 24645 xdescribe : false, | |
| 24646 it : false, | |
| 24647 xit : false, | |
| 24648 context : false, | |
| 24649 xcontext : false, | |
| 24650 before : false, | |
| 24651 after : false, | |
| 24652 beforeEach : false, | |
| 24653 afterEach : false, | |
| 24654 // TDD | |
| 24655 suite : false, | |
| 24656 test : false, | |
| 24657 setup : false, | |
| 24658 teardown : false, | |
| 24659 suiteSetup : false, | |
| 24660 suiteTeardown : false | |
| 24661 }; | |
| 24662 | |
| 24663 exports.jasmine = { | |
| 24664 jasmine : false, | |
| 24665 describe : false, | |
| 24666 xdescribe : false, | |
| 24667 it : false, | |
| 24668 xit : false, | |
| 24669 beforeEach : false, | |
| 24670 afterEach : false, | |
| 24671 setFixtures : false, | |
| 24672 loadFixtures: false, | |
| 24673 spyOn : false, | |
| 24674 expect : false, | |
| 24675 // Jasmine 1.3 | |
| 24676 runs : false, | |
| 24677 waitsFor : false, | |
| 24678 waits : false, | |
| 24679 // Jasmine 2.1 | |
| 24680 beforeAll : false, | |
| 24681 afterAll : false, | |
| 24682 fail : false, | |
| 24683 fdescribe : false, | |
| 24684 fit : false, | |
| 24685 pending : false, | |
| 24686 // Jasmine 2.6 | |
| 24687 spyOnProperty: false | |
| 24688 }; | |
| 24689 | |
| 24690 },{}],"jshint":[function(require,module,exports){ | |
| 24691 /*! | |
| 24692 * JSHint, by JSHint Community. | |
| 24693 * | |
| 24694 * Licensed under the MIT license. | |
| 24695 * | |
| 24696 * JSHint is a derivative work of JSLint: | |
| 24697 * | |
| 24698 * Copyright (c) 2002 Douglas Crockford (www.JSLint.com) | |
| 24699 * | |
| 24700 * Permission is hereby granted, free of charge, to any person obtaining | |
| 24701 * a copy of this software and associated documentation files (the "Software"), | |
| 24702 * to deal in the Software without restriction, including without limitation | |
| 24703 * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| 24704 * and/or sell copies of the Software, and to permit persons to whom | |
| 24705 * the Software is furnished to do so, subject to the following conditions: | |
| 24706 * | |
| 24707 * The above copyright notice and this permission notice shall be included | |
| 24708 * in all copies or substantial portions of the Software. | |
| 24709 * | |
| 24710 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 24711 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 24712 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 24713 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 24714 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
| 24715 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
| 24716 * DEALINGS IN THE SOFTWARE. | |
| 24717 * | |
| 24718 */ | |
| 24719 | |
| 24720 /*jshint quotmark:double */ | |
| 24721 /*exported console */ | |
| 24722 | |
| 24723 var _ = require("lodash"); | |
| 24724 var events = require("events"); | |
| 24725 var vars = require("./vars.js"); | |
| 24726 var messages = require("./messages.js"); | |
| 24727 var Lexer = require("./lex.js").Lexer; | |
| 24728 var reg = require("./reg.js"); | |
| 24729 var state = require("./state.js").state; | |
| 24730 var style = require("./style.js"); | |
| 24731 var options = require("./options.js"); | |
| 24732 var scopeManager = require("./scope-manager.js"); | |
| 24733 var prodParams = require("./prod-params.js"); | |
| 24734 | |
| 24735 // We need this module here because environments such as IE and Rhino | |
| 24736 // don't necessarilly expose the 'console' API and browserify uses | |
| 24737 // it to log things. It's a sad state of affair, really. | |
| 24738 var console = require("console-browserify"); | |
| 24739 | |
| 24740 // We build the application inside a function so that we produce only a singleton | |
| 24741 // variable. That function will be invoked immediately, and its return value is | |
| 24742 // the JSHINT function itself. | |
| 24743 | |
| 24744 var JSHINT = (function() { | |
| 24745 "use strict"; | |
| 24746 | |
| 24747 var api, // Extension API | |
| 24748 | |
| 24749 // These are operators that should not be used with the ! operator. | |
| 24750 bang = { | |
| 24751 "<" : true, | |
| 24752 "<=" : true, | |
| 24753 "==" : true, | |
| 24754 "===": true, | |
| 24755 "!==": true, | |
| 24756 "!=" : true, | |
| 24757 ">" : true, | |
| 24758 ">=" : true, | |
| 24759 "+" : true, | |
| 24760 "-" : true, | |
| 24761 "*" : true, | |
| 24762 "/" : true, | |
| 24763 "%" : true | |
| 24764 }, | |
| 24765 | |
| 24766 declared, // Globals that were declared using /*global ... */ syntax. | |
| 24767 | |
| 24768 functions, // All of the functions | |
| 24769 | |
| 24770 inblock, | |
| 24771 indent, | |
| 24772 lookahead, | |
| 24773 lex, | |
| 24774 member, | |
| 24775 membersOnly, | |
| 24776 predefined, // Global variables defined by option | |
| 24777 | |
| 24778 extraModules = [], | |
| 24779 emitter = new events.EventEmitter(); | |
| 24780 | |
| 24781 function checkOption(name, isStable, t) { | |
| 24782 var type, validNames; | |
| 24783 | |
| 24784 if (isStable) { | |
| 24785 type = ""; | |
| 24786 validNames = options.validNames; | |
| 24787 } else { | |
| 24788 type = "unstable "; | |
| 24789 validNames = options.unstableNames; | |
| 24790 } | |
| 24791 | |
| 24792 name = name.trim(); | |
| 24793 | |
| 24794 if (/^[+-]W\d{3}$/g.test(name)) { | |
| 24795 return true; | |
| 24796 } | |
| 24797 | |
| 24798 if (validNames.indexOf(name) === -1) { | |
| 24799 if (t.type !== "jslint" && !_.has(options.removed, name)) { | |
| 24800 error("E001", t, type, name); | |
| 24801 return false; | |
| 24802 } | |
| 24803 } | |
| 24804 | |
| 24805 return true; | |
| 24806 } | |
| 24807 | |
| 24808 function isString(obj) { | |
| 24809 return Object.prototype.toString.call(obj) === "[object String]"; | |
| 24810 } | |
| 24811 | |
| 24812 function isIdentifier(tkn, value) { | |
| 24813 if (!tkn) | |
| 24814 return false; | |
| 24815 | |
| 24816 if (!tkn.identifier || tkn.value !== value) | |
| 24817 return false; | |
| 24818 | |
| 24819 return true; | |
| 24820 } | |
| 24821 | |
| 24822 /** | |
| 24823 * ES3 defined a set of "FutureReservedWords" in order "to allow for the | |
| 24824 * possibility of future adoption of [proposed] extensions." | |
| 24825 * | |
| 24826 * ES5 reduced the set of FutureReservedWords, in some cases by using them to | |
| 24827 * define new syntactic forms (e.g. `class` and `const`) and in other cases | |
| 24828 * by simply allowing their use as Identifiers (e.g. `int` and `goto`). | |
| 24829 * Separately, ES5 introduced new restrictions on certain tokens, but limited | |
| 24830 * the restriction to strict mode code (e.g. `let` and `yield`). | |
| 24831 * | |
| 24832 * This function determines if a given token describes a reserved word | |
| 24833 * according to the current state of the parser. | |
| 24834 * | |
| 24835 * @param {number} context - the parsing context; see `prod-params.js` for | |
| 24836 * more information | |
| 24837 * @param {Token} token | |
| 24838 */ | |
| 24839 function isReserved(context, token) { | |
| 24840 if (!token.reserved) { | |
| 24841 return false; | |
| 24842 } | |
| 24843 var meta = token.meta; | |
| 24844 | |
| 24845 if (meta && meta.isFutureReservedWord) { | |
| 24846 if (state.inES5()) { | |
| 24847 // ES3 FutureReservedWord in an ES5 environment. | |
| 24848 if (!meta.es5) { | |
| 24849 return false; | |
| 24850 } | |
| 24851 | |
| 24852 if (token.isProperty) { | |
| 24853 return false; | |
| 24854 } | |
| 24855 } | |
| 24856 } else if (meta && meta.es5 && !state.inES5()) { | |
| 24857 return false; | |
| 24858 } | |
| 24859 | |
| 24860 // Some identifiers are reserved only within a strict mode environment. | |
| 24861 if (meta && meta.strictOnly && state.inES5()) { | |
| 24862 if (!state.option.strict && !state.isStrict()) { | |
| 24863 return false; | |
| 24864 } | |
| 24865 } | |
| 24866 | |
| 24867 if (token.id === "await" && (!(context & prodParams.async) && !state.option.module)) { | |
| 24868 return false; | |
| 24869 } | |
| 24870 | |
| 24871 if (token.id === "yield" && (!(context & prodParams.yield))) { | |
| 24872 return state.isStrict(); | |
| 24873 } | |
| 24874 | |
| 24875 return true; | |
| 24876 } | |
| 24877 | |
| 24878 function supplant(str, data) { | |
| 24879 return str.replace(/\{([^{}]*)\}/g, function(a, b) { | |
| 24880 var r = data[b]; | |
| 24881 return typeof r === "string" || typeof r === "number" ? r : a; | |
| 24882 }); | |
| 24883 } | |
| 24884 | |
| 24885 function combine(dest, src) { | |
| 24886 Object.keys(src).forEach(function(name) { | |
| 24887 if (_.has(JSHINT.blacklist, name)) return; | |
| 24888 dest[name] = src[name]; | |
| 24889 }); | |
| 24890 } | |
| 24891 | |
| 24892 function processenforceall() { | |
| 24893 if (state.option.enforceall) { | |
| 24894 for (var enforceopt in options.bool.enforcing) { | |
| 24895 if (state.option[enforceopt] === undefined && | |
| 24896 !options.noenforceall[enforceopt]) { | |
| 24897 state.option[enforceopt] = true; | |
| 24898 } | |
| 24899 } | |
| 24900 for (var relaxopt in options.bool.relaxing) { | |
| 24901 if (state.option[relaxopt] === undefined) { | |
| 24902 state.option[relaxopt] = false; | |
| 24903 } | |
| 24904 } | |
| 24905 } | |
| 24906 } | |
| 24907 | |
| 24908 /** | |
| 24909 * Apply all linting options according to the status of the `state` object. | |
| 24910 */ | |
| 24911 function applyOptions() { | |
| 24912 var badESOpt = null; | |
| 24913 processenforceall(); | |
| 24914 | |
| 24915 /** | |
| 24916 * TODO: Remove in JSHint 3 | |
| 24917 */ | |
| 24918 badESOpt = state.inferEsVersion(); | |
| 24919 if (badESOpt) { | |
| 24920 quit("E059", state.tokens.next, "esversion", badESOpt); | |
| 24921 } | |
| 24922 | |
| 24923 if (state.inES5()) { | |
| 24924 combine(predefined, vars.ecmaIdentifiers[5]); | |
| 24925 } | |
| 24926 | |
| 24927 if (state.inES6()) { | |
| 24928 combine(predefined, vars.ecmaIdentifiers[6]); | |
| 24929 } | |
| 24930 | |
| 24931 if (state.inES8()) { | |
| 24932 combine(predefined, vars.ecmaIdentifiers[8]); | |
| 24933 } | |
| 24934 | |
| 24935 /** | |
| 24936 * Use `in` to check for the presence of any explicitly-specified value for | |
| 24937 * `globalstrict` because both `true` and `false` should trigger an error. | |
| 24938 */ | |
| 24939 if (state.option.strict === "global" && "globalstrict" in state.option) { | |
| 24940 quit("E059", state.tokens.next, "strict", "globalstrict"); | |
| 24941 } | |
| 24942 | |
| 24943 if (state.option.module) { | |
| 24944 /** | |
| 24945 * TODO: Extend this restriction to *all* ES6-specific options. | |
| 24946 */ | |
| 24947 if (!state.inES6()) { | |
| 24948 warning("W134", state.tokens.next, "module", 6); | |
| 24949 } | |
| 24950 } | |
| 24951 | |
| 24952 if (state.option.regexpu) { | |
| 24953 /** | |
| 24954 * TODO: Extend this restriction to *all* ES6-specific options. | |
| 24955 */ | |
| 24956 if (!state.inES6()) { | |
| 24957 warning("W134", state.tokens.next, "regexpu", 6); | |
| 24958 } | |
| 24959 } | |
| 24960 | |
| 24961 if (state.option.couch) { | |
| 24962 combine(predefined, vars.couch); | |
| 24963 } | |
| 24964 | |
| 24965 if (state.option.qunit) { | |
| 24966 combine(predefined, vars.qunit); | |
| 24967 } | |
| 24968 | |
| 24969 if (state.option.rhino) { | |
| 24970 combine(predefined, vars.rhino); | |
| 24971 } | |
| 24972 | |
| 24973 if (state.option.shelljs) { | |
| 24974 combine(predefined, vars.shelljs); | |
| 24975 combine(predefined, vars.node); | |
| 24976 } | |
| 24977 if (state.option.typed) { | |
| 24978 combine(predefined, vars.typed); | |
| 24979 } | |
| 24980 | |
| 24981 if (state.option.phantom) { | |
| 24982 combine(predefined, vars.phantom); | |
| 24983 } | |
| 24984 | |
| 24985 if (state.option.prototypejs) { | |
| 24986 combine(predefined, vars.prototypejs); | |
| 24987 } | |
| 24988 | |
| 24989 if (state.option.node) { | |
| 24990 combine(predefined, vars.node); | |
| 24991 combine(predefined, vars.typed); | |
| 24992 } | |
| 24993 | |
| 24994 if (state.option.devel) { | |
| 24995 combine(predefined, vars.devel); | |
| 24996 } | |
| 24997 | |
| 24998 if (state.option.dojo) { | |
| 24999 combine(predefined, vars.dojo); | |
| 25000 } | |
| 25001 | |
| 25002 if (state.option.browser) { | |
| 25003 combine(predefined, vars.browser); | |
| 25004 combine(predefined, vars.typed); | |
| 25005 } | |
| 25006 | |
| 25007 if (state.option.browserify) { | |
| 25008 combine(predefined, vars.browser); | |
| 25009 combine(predefined, vars.typed); | |
| 25010 combine(predefined, vars.browserify); | |
| 25011 } | |
| 25012 | |
| 25013 if (state.option.nonstandard) { | |
| 25014 combine(predefined, vars.nonstandard); | |
| 25015 } | |
| 25016 | |
| 25017 if (state.option.jasmine) { | |
| 25018 combine(predefined, vars.jasmine); | |
| 25019 } | |
| 25020 | |
| 25021 if (state.option.jquery) { | |
| 25022 combine(predefined, vars.jquery); | |
| 25023 } | |
| 25024 | |
| 25025 if (state.option.mootools) { | |
| 25026 combine(predefined, vars.mootools); | |
| 25027 } | |
| 25028 | |
| 25029 if (state.option.worker) { | |
| 25030 combine(predefined, vars.worker); | |
| 25031 } | |
| 25032 | |
| 25033 if (state.option.wsh) { | |
| 25034 combine(predefined, vars.wsh); | |
| 25035 } | |
| 25036 | |
| 25037 if (state.option.yui) { | |
| 25038 combine(predefined, vars.yui); | |
| 25039 } | |
| 25040 | |
| 25041 if (state.option.mocha) { | |
| 25042 combine(predefined, vars.mocha); | |
| 25043 } | |
| 25044 } | |
| 25045 | |
| 25046 // Produce an error warning. | |
| 25047 function quit(code, token, a, b) { | |
| 25048 var percentage = Math.floor((token.line / state.lines.length) * 100); | |
| 25049 var message = messages.errors[code].desc; | |
| 25050 | |
| 25051 var exception = { | |
| 25052 name: "JSHintError", | |
| 25053 line: token.line, | |
| 25054 character: token.from, | |
| 25055 message: message + " (" + percentage + "% scanned).", | |
| 25056 raw: message, | |
| 25057 code: code, | |
| 25058 a: a, | |
| 25059 b: b | |
| 25060 }; | |
| 25061 | |
| 25062 exception.reason = supplant(message, exception) + " (" + percentage + | |
| 25063 "% scanned)."; | |
| 25064 | |
| 25065 throw exception; | |
| 25066 } | |
| 25067 | |
| 25068 function removeIgnoredMessages() { | |
| 25069 var ignored = state.ignoredLines; | |
| 25070 | |
| 25071 if (_.isEmpty(ignored)) return; | |
| 25072 JSHINT.errors = _.reject(JSHINT.errors, function(err) { return ignored[err.line] }); | |
| 25073 } | |
| 25074 | |
| 25075 function warning(code, t, a, b, c, d) { | |
| 25076 var ch, l, w, msg; | |
| 25077 | |
| 25078 if (/^W\d{3}$/.test(code)) { | |
| 25079 if (state.ignored[code]) | |
| 25080 return; | |
| 25081 | |
| 25082 msg = messages.warnings[code]; | |
| 25083 } else if (/E\d{3}/.test(code)) { | |
| 25084 msg = messages.errors[code]; | |
| 25085 } else if (/I\d{3}/.test(code)) { | |
| 25086 msg = messages.info[code]; | |
| 25087 } | |
| 25088 | |
| 25089 t = t || state.tokens.next || {}; | |
| 25090 if (t.id === "(end)") { // `~ | |
| 25091 t = state.tokens.curr; | |
| 25092 } | |
| 25093 | |
| 25094 l = t.line; | |
| 25095 ch = t.from; | |
| 25096 | |
| 25097 w = { | |
| 25098 id: "(error)", | |
| 25099 raw: msg.desc, | |
| 25100 code: msg.code, | |
| 25101 evidence: state.lines[l - 1] || "", | |
| 25102 line: l, | |
| 25103 character: ch, | |
| 25104 scope: JSHINT.scope, | |
| 25105 a: a, | |
| 25106 b: b, | |
| 25107 c: c, | |
| 25108 d: d | |
| 25109 }; | |
| 25110 | |
| 25111 w.reason = supplant(msg.desc, w); | |
| 25112 JSHINT.errors.push(w); | |
| 25113 | |
| 25114 removeIgnoredMessages(); | |
| 25115 | |
| 25116 if (JSHINT.errors.length >= state.option.maxerr) | |
| 25117 quit("E043", t); | |
| 25118 | |
| 25119 return w; | |
| 25120 } | |
| 25121 | |
| 25122 function warningAt(m, l, ch, a, b, c, d) { | |
| 25123 return warning(m, { | |
| 25124 line: l, | |
| 25125 from: ch | |
| 25126 }, a, b, c, d); | |
| 25127 } | |
| 25128 | |
| 25129 function error(m, t, a, b, c, d) { | |
| 25130 warning(m, t, a, b, c, d); | |
| 25131 } | |
| 25132 | |
| 25133 function errorAt(m, l, ch, a, b, c, d) { | |
| 25134 return error(m, { | |
| 25135 line: l, | |
| 25136 from: ch | |
| 25137 }, a, b, c, d); | |
| 25138 } | |
| 25139 | |
| 25140 // Tracking of "internal" scripts, like eval containing a static string | |
| 25141 function addEvalCode(elem, token) { | |
| 25142 JSHINT.internals.push({ | |
| 25143 id: "(internal)", | |
| 25144 elem: elem, | |
| 25145 token: token, | |
| 25146 code: token.value.replace(/([^\\])(\\*)\2\\n/g, "$1\n") | |
| 25147 }); | |
| 25148 } | |
| 25149 | |
| 25150 /** | |
| 25151 * Process an inline linting directive | |
| 25152 * | |
| 25153 * @param {Token} directiveToken - the directive-bearing comment token | |
| 25154 * @param {Token} previous - the token that preceeds the directive | |
| 25155 */ | |
| 25156 function lintingDirective(directiveToken, previous) { | |
| 25157 var body = directiveToken.body.split(",") | |
| 25158 .map(function(s) { return s.trim(); }); | |
| 25159 var predef = {}; | |
| 25160 | |
| 25161 if (directiveToken.type === "falls through") { | |
| 25162 previous.caseFallsThrough = true; | |
| 25163 return; | |
| 25164 } | |
| 25165 | |
| 25166 if (directiveToken.type === "globals") { | |
| 25167 body.forEach(function(item, idx) { | |
| 25168 var parts = item.split(":"); | |
| 25169 var key = parts[0].trim(); | |
| 25170 | |
| 25171 if (key === "-" || !key.length) { | |
| 25172 // Ignore trailing comma | |
| 25173 if (idx > 0 && idx === body.length - 1) { | |
| 25174 return; | |
| 25175 } | |
| 25176 error("E002", directiveToken); | |
| 25177 return; | |
| 25178 } | |
| 25179 | |
| 25180 if (key.charAt(0) === "-") { | |
| 25181 key = key.slice(1); | |
| 25182 | |
| 25183 JSHINT.blacklist[key] = key; | |
| 25184 delete predefined[key]; | |
| 25185 } else { | |
| 25186 predef[key] = parts.length > 1 && parts[1].trim() === "true"; | |
| 25187 } | |
| 25188 }); | |
| 25189 | |
| 25190 combine(predefined, predef); | |
| 25191 | |
| 25192 for (var key in predef) { | |
| 25193 if (_.has(predef, key)) { | |
| 25194 declared[key] = directiveToken; | |
| 25195 } | |
| 25196 } | |
| 25197 } | |
| 25198 | |
| 25199 if (directiveToken.type === "exported") { | |
| 25200 body.forEach(function(e, idx) { | |
| 25201 if (!e.length) { | |
| 25202 // Ignore trailing comma | |
| 25203 if (idx > 0 && idx === body.length - 1) { | |
| 25204 return; | |
| 25205 } | |
| 25206 error("E002", directiveToken); | |
| 25207 return; | |
| 25208 } | |
| 25209 | |
| 25210 state.funct["(scope)"].addExported(e); | |
| 25211 }); | |
| 25212 } | |
| 25213 | |
| 25214 if (directiveToken.type === "members") { | |
| 25215 membersOnly = membersOnly || {}; | |
| 25216 | |
| 25217 body.forEach(function(m) { | |
| 25218 var ch1 = m.charAt(0); | |
| 25219 var ch2 = m.charAt(m.length - 1); | |
| 25220 | |
| 25221 if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) { | |
| 25222 m = m | |
| 25223 .substr(1, m.length - 2) | |
| 25224 .replace("\\\"", "\""); | |
| 25225 } | |
| 25226 | |
| 25227 membersOnly[m] = false; | |
| 25228 }); | |
| 25229 } | |
| 25230 | |
| 25231 var numvals = [ | |
| 25232 "maxstatements", | |
| 25233 "maxparams", | |
| 25234 "maxdepth", | |
| 25235 "maxcomplexity", | |
| 25236 "maxerr", | |
| 25237 "maxlen", | |
| 25238 "indent" | |
| 25239 ]; | |
| 25240 | |
| 25241 if (directiveToken.type === "jshint" || directiveToken.type === "jslint" || | |
| 25242 directiveToken.type === "jshint.unstable") { | |
| 25243 body.forEach(function(item) { | |
| 25244 var parts = item.split(":"); | |
| 25245 var key = parts[0].trim(); | |
| 25246 var val = parts.length > 1 ? parts[1].trim() : ""; | |
| 25247 var numberVal; | |
| 25248 | |
| 25249 if (!checkOption(key, directiveToken.type !== "jshint.unstable", directiveToken)) { | |
| 25250 return; | |
| 25251 } | |
| 25252 | |
| 25253 if (numvals.indexOf(key) >= 0) { | |
| 25254 // GH988 - numeric options can be disabled by setting them to `false` | |
| 25255 if (val !== "false") { | |
| 25256 numberVal = +val; | |
| 25257 | |
| 25258 if (typeof numberVal !== "number" || !isFinite(numberVal) || | |
| 25259 numberVal <= 0 || Math.floor(numberVal) !== numberVal) { | |
| 25260 error("E032", directiveToken, val); | |
| 25261 return; | |
| 25262 } | |
| 25263 | |
| 25264 state.option[key] = numberVal; | |
| 25265 } else { | |
| 25266 state.option[key] = key === "indent" ? 4 : false; | |
| 25267 } | |
| 25268 | |
| 25269 return; | |
| 25270 } | |
| 25271 | |
| 25272 if (key === "validthis") { | |
| 25273 // `validthis` is valid only within a function scope. | |
| 25274 | |
| 25275 if (state.funct["(global)"]) | |
| 25276 return void error("E009"); | |
| 25277 | |
| 25278 if (val !== "true" && val !== "false") | |
| 25279 return void error("E002", directiveToken); | |
| 25280 | |
| 25281 state.option.validthis = (val === "true"); | |
| 25282 return; | |
| 25283 } | |
| 25284 | |
| 25285 if (key === "quotmark") { | |
| 25286 switch (val) { | |
| 25287 case "true": | |
| 25288 case "false": | |
| 25289 state.option.quotmark = (val === "true"); | |
| 25290 break; | |
| 25291 case "double": | |
| 25292 case "single": | |
| 25293 state.option.quotmark = val; | |
| 25294 break; | |
| 25295 default: | |
| 25296 error("E002", directiveToken); | |
| 25297 } | |
| 25298 return; | |
| 25299 } | |
| 25300 | |
| 25301 if (key === "shadow") { | |
| 25302 switch (val) { | |
| 25303 case "true": | |
| 25304 state.option.shadow = true; | |
| 25305 break; | |
| 25306 case "outer": | |
| 25307 state.option.shadow = "outer"; | |
| 25308 break; | |
| 25309 case "false": | |
| 25310 case "inner": | |
| 25311 state.option.shadow = "inner"; | |
| 25312 break; | |
| 25313 default: | |
| 25314 error("E002", directiveToken); | |
| 25315 } | |
| 25316 return; | |
| 25317 } | |
| 25318 | |
| 25319 if (key === "unused") { | |
| 25320 switch (val) { | |
| 25321 case "true": | |
| 25322 state.option.unused = true; | |
| 25323 break; | |
| 25324 case "false": | |
| 25325 state.option.unused = false; | |
| 25326 break; | |
| 25327 case "vars": | |
| 25328 case "strict": | |
| 25329 state.option.unused = val; | |
| 25330 break; | |
| 25331 default: | |
| 25332 error("E002", directiveToken); | |
| 25333 } | |
| 25334 return; | |
| 25335 } | |
| 25336 | |
| 25337 if (key === "latedef") { | |
| 25338 switch (val) { | |
| 25339 case "true": | |
| 25340 state.option.latedef = true; | |
| 25341 break; | |
| 25342 case "false": | |
| 25343 state.option.latedef = false; | |
| 25344 break; | |
| 25345 case "nofunc": | |
| 25346 state.option.latedef = "nofunc"; | |
| 25347 break; | |
| 25348 default: | |
| 25349 error("E002", directiveToken); | |
| 25350 } | |
| 25351 return; | |
| 25352 } | |
| 25353 | |
| 25354 if (key === "ignore") { | |
| 25355 switch (val) { | |
| 25356 case "line": | |
| 25357 state.ignoredLines[directiveToken.line] = true; | |
| 25358 removeIgnoredMessages(); | |
| 25359 break; | |
| 25360 default: | |
| 25361 error("E002", directiveToken); | |
| 25362 } | |
| 25363 return; | |
| 25364 } | |
| 25365 | |
| 25366 if (key === "strict") { | |
| 25367 switch (val) { | |
| 25368 case "true": | |
| 25369 state.option.strict = true; | |
| 25370 break; | |
| 25371 case "false": | |
| 25372 state.option.strict = false; | |
| 25373 break; | |
| 25374 case "global": | |
| 25375 case "implied": | |
| 25376 state.option.strict = val; | |
| 25377 break; | |
| 25378 default: | |
| 25379 error("E002", directiveToken); | |
| 25380 } | |
| 25381 return; | |
| 25382 } | |
| 25383 | |
| 25384 if (key === "module") { | |
| 25385 /** | |
| 25386 * TODO: Extend this restriction to *all* "environmental" options. | |
| 25387 */ | |
| 25388 if (!hasParsedCode(state.funct)) { | |
| 25389 error("E055", directiveToken, "module"); | |
| 25390 } | |
| 25391 } | |
| 25392 | |
| 25393 if (key === "esversion") { | |
| 25394 switch (val) { | |
| 25395 case "3": | |
| 25396 case "5": | |
| 25397 case "6": | |
| 25398 case "7": | |
| 25399 case "8": | |
| 25400 case "9": | |
| 25401 case "10": | |
| 25402 state.option.moz = false; | |
| 25403 state.option.esversion = +val; | |
| 25404 break; | |
| 25405 case "2015": | |
| 25406 case "2016": | |
| 25407 case "2017": | |
| 25408 case "2018": | |
| 25409 case "2019": | |
| 25410 state.option.moz = false; | |
| 25411 // Translate specification publication year to version number. | |
| 25412 state.option.esversion = +val - 2009; | |
| 25413 break; | |
| 25414 default: | |
| 25415 error("E002", directiveToken); | |
| 25416 } | |
| 25417 if (!hasParsedCode(state.funct)) { | |
| 25418 error("E055", directiveToken, "esversion"); | |
| 25419 } | |
| 25420 return; | |
| 25421 } | |
| 25422 | |
| 25423 var match = /^([+-])(W\d{3})$/g.exec(key); | |
| 25424 if (match) { | |
| 25425 // ignore for -W..., unignore for +W... | |
| 25426 state.ignored[match[2]] = (match[1] === "-"); | |
| 25427 return; | |
| 25428 } | |
| 25429 | |
| 25430 var tn; | |
| 25431 if (val === "true" || val === "false") { | |
| 25432 if (directiveToken.type === "jslint") { | |
| 25433 tn = options.renamed[key] || key; | |
| 25434 state.option[tn] = (val === "true"); | |
| 25435 | |
| 25436 if (options.inverted[tn] !== undefined) { | |
| 25437 state.option[tn] = !state.option[tn]; | |
| 25438 } | |
| 25439 } else if (directiveToken.type === "jshint.unstable") { | |
| 25440 state.option.unstable[key] = (val === "true"); | |
| 25441 } else { | |
| 25442 state.option[key] = (val === "true"); | |
| 25443 } | |
| 25444 | |
| 25445 return; | |
| 25446 } | |
| 25447 | |
| 25448 error("E002", directiveToken); | |
| 25449 }); | |
| 25450 | |
| 25451 applyOptions(); | |
| 25452 } | |
| 25453 } | |
| 25454 | |
| 25455 /** | |
| 25456 * Return a token beyond the token available in `state.tokens.next`. If no | |
| 25457 * such token exists, return the "(end)" token. This function is used to | |
| 25458 * determine parsing strategies in cases where the value of the next token | |
| 25459 * does not provide sufficient information, as is the case with `for` loops, | |
| 25460 * e.g.: | |
| 25461 * | |
| 25462 * for ( var i in ... | |
| 25463 * | |
| 25464 * versus: | |
| 25465 * | |
| 25466 * for ( var i = ... | |
| 25467 * | |
| 25468 * @param {number} [p] - offset of desired token; defaults to 0 | |
| 25469 * | |
| 25470 * @returns {token} | |
| 25471 */ | |
| 25472 function peek(p) { | |
| 25473 var i = p || 0, j = lookahead.length, t; | |
| 25474 | |
| 25475 if (i < j) { | |
| 25476 return lookahead[i]; | |
| 25477 } | |
| 25478 | |
| 25479 while (j <= i) { | |
| 25480 t = lex.token(); | |
| 25481 | |
| 25482 // When the lexer is exhausted, this function should produce the "(end)" | |
| 25483 // token, even in cases where the requested token is beyond the end of | |
| 25484 // the input stream. | |
| 25485 if (!t) { | |
| 25486 // If the lookahead buffer is empty, the expected "(end)" token was | |
| 25487 // already emitted by the most recent invocation of `advance` and is | |
| 25488 // available as the next token. | |
| 25489 if (!lookahead.length) { | |
| 25490 return state.tokens.next; | |
| 25491 } | |
| 25492 | |
| 25493 return lookahead[j - 1]; | |
| 25494 } | |
| 25495 | |
| 25496 lookahead[j] = t; | |
| 25497 j += 1; | |
| 25498 } | |
| 25499 | |
| 25500 return t; | |
| 25501 } | |
| 25502 | |
| 25503 function peekIgnoreEOL() { | |
| 25504 var i = 0; | |
| 25505 var t; | |
| 25506 do { | |
| 25507 t = peek(i++); | |
| 25508 } while (t.id === "(endline)"); | |
| 25509 return t; | |
| 25510 } | |
| 25511 | |
| 25512 /** | |
| 25513 * Consume the next token. | |
| 25514 * | |
| 25515 * @param {string} [expected] - the expected value of the next token's `id` | |
| 25516 * property (in the case of punctuators) or | |
| 25517 * `value` property (in the case of identifiers | |
| 25518 * and literals); if unspecified, any token will | |
| 25519 * be accepted | |
| 25520 * @param {object} [relatedToken] - the token that informed the expected | |
| 25521 * value, if any (for example: the opening | |
| 25522 * brace when a closing brace is expected); | |
| 25523 * used to produce more meaningful errors | |
| 25524 */ | |
| 25525 function advance(expected, relatedToken) { | |
| 25526 var nextToken = state.tokens.next; | |
| 25527 | |
| 25528 if (expected && nextToken.id !== expected) { | |
| 25529 if (relatedToken) { | |
| 25530 if (nextToken.id === "(end)") { | |
| 25531 error("E019", relatedToken, relatedToken.id); | |
| 25532 } else { | |
| 25533 error("E020", nextToken, expected, relatedToken.id, | |
| 25534 relatedToken.line, nextToken.value); | |
| 25535 } | |
| 25536 } else if (nextToken.type !== "(identifier)" || nextToken.value !== expected) { | |
| 25537 error("E021", nextToken, expected, nextToken.value); | |
| 25538 } | |
| 25539 } | |
| 25540 | |
| 25541 state.tokens.prev = state.tokens.curr; | |
| 25542 state.tokens.curr = state.tokens.next; | |
| 25543 for (;;) { | |
| 25544 state.tokens.next = lookahead.shift() || lex.token(); | |
| 25545 | |
| 25546 if (!state.tokens.next) { // No more tokens left, give up | |
| 25547 quit("E041", state.tokens.curr); | |
| 25548 } | |
| 25549 | |
| 25550 if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") { | |
| 25551 return; | |
| 25552 } | |
| 25553 | |
| 25554 if (state.tokens.next.check) { | |
| 25555 state.tokens.next.check(); | |
| 25556 } | |
| 25557 | |
| 25558 if (state.tokens.next.isSpecial) { | |
| 25559 lintingDirective(state.tokens.next, state.tokens.curr); | |
| 25560 } else { | |
| 25561 if (state.tokens.next.id !== "(endline)") { | |
| 25562 break; | |
| 25563 } | |
| 25564 } | |
| 25565 } | |
| 25566 } | |
| 25567 | |
| 25568 /** | |
| 25569 * Determine whether a given token is an operator. | |
| 25570 * | |
| 25571 * @param {token} token | |
| 25572 * | |
| 25573 * @returns {boolean} | |
| 25574 */ | |
| 25575 function isOperator(token) { | |
| 25576 return token.first || token.right || token.left || token.id === "yield" || token.id === "await"; | |
| 25577 } | |
| 25578 | |
| 25579 function isEndOfExpr(context, curr, next) { | |
| 25580 if (arguments.length <= 1) { | |
| 25581 curr = state.tokens.curr; | |
| 25582 next = state.tokens.next; | |
| 25583 } | |
| 25584 | |
| 25585 if (next.id === "in" && context & prodParams.noin) { | |
| 25586 return true; | |
| 25587 } | |
| 25588 | |
| 25589 if (next.id === ";" || next.id === "}" || next.id === ":") { | |
| 25590 return true; | |
| 25591 } | |
| 25592 | |
| 25593 if (next.infix === curr.infix || | |
| 25594 // Infix operators which follow `yield` should only be consumed as part | |
| 25595 // of the current expression if allowed by the syntactic grammar. In | |
| 25596 // effect, this prevents automatic semicolon insertion when `yield` is | |
| 25597 // followed by a newline and a comma operator (without enabling it when | |
| 25598 // `yield` is followed by a newline and a `[` token). | |
| 25599 (curr.id === "yield" && curr.rbp < next.rbp)) { | |
| 25600 return !sameLine(curr, next); | |
| 25601 } | |
| 25602 | |
| 25603 return false; | |
| 25604 } | |
| 25605 | |
| 25606 /** | |
| 25607 * The `expression` function is the heart of JSHint's parsing behaior. It is | |
| 25608 * based on the Pratt parser, but it extends that model with a `fud` method. | |
| 25609 * Short for "first null denotation," it it similar to the `nud` ("null | |
| 25610 * denotation") function, but it is only used on the first token of a | |
| 25611 * statement. This simplifies usage in statement-oriented languages like | |
| 25612 * JavaScript. | |
| 25613 * | |
| 25614 * .nud Null denotation | |
| 25615 * .fud First null denotation | |
| 25616 * .led Left denotation | |
| 25617 * lbp Left binding power | |
| 25618 * rbp Right binding power | |
| 25619 * | |
| 25620 * They are elements of the parsing method called Top Down Operator Precedence. | |
| 25621 * | |
| 25622 * In addition to parsing, this function applies a number of linting patterns. | |
| 25623 * | |
| 25624 * @param {number} context - the parsing context (a bitfield describing | |
| 25625 * conditions of the current parsing operation | |
| 25626 * which can influence how the next tokens are | |
| 25627 * interpreted); see `prod-params.js` for more | |
| 25628 * detail) | |
| 25629 * @param {number} rbp - the right-binding power of the token to be consumed | |
| 25630 */ | |
| 25631 function expression(context, rbp) { | |
| 25632 var left, isArray = false, isObject = false; | |
| 25633 var initial = context & prodParams.initial; | |
| 25634 var curr; | |
| 25635 | |
| 25636 context &= ~prodParams.initial; | |
| 25637 | |
| 25638 state.nameStack.push(); | |
| 25639 | |
| 25640 if (state.tokens.next.id === "(end)") | |
| 25641 error("E006", state.tokens.curr); | |
| 25642 | |
| 25643 advance(); | |
| 25644 | |
| 25645 if (initial) { | |
| 25646 state.funct["(verb)"] = state.tokens.curr.value; | |
| 25647 state.tokens.curr.beginsStmt = true; | |
| 25648 } | |
| 25649 | |
| 25650 curr = state.tokens.curr; | |
| 25651 | |
| 25652 if (initial && curr.fud && (!curr.useFud || curr.useFud(context))) { | |
| 25653 left = state.tokens.curr.fud(context); | |
| 25654 } else { | |
| 25655 if (state.tokens.curr.nud) { | |
| 25656 left = state.tokens.curr.nud(context, rbp); | |
| 25657 } else { | |
| 25658 error("E030", state.tokens.curr, state.tokens.curr.id); | |
| 25659 } | |
| 25660 | |
| 25661 while (rbp < state.tokens.next.lbp && !isEndOfExpr(context)) { | |
| 25662 isArray = state.tokens.curr.value === "Array"; | |
| 25663 isObject = state.tokens.curr.value === "Object"; | |
| 25664 | |
| 25665 // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object() | |
| 25666 // Line breaks in IfStatement heads exist to satisfy the checkJSHint | |
| 25667 // "Line too long." error. | |
| 25668 if (left && (left.value || (left.first && left.first.value))) { | |
| 25669 // If the left.value is not "new", or the left.first.value is a "." | |
| 25670 // then safely assume that this is not "new Array()" and possibly | |
| 25671 // not "new Object()"... | |
| 25672 if (left.value !== "new" || | |
| 25673 (left.first && left.first.value && left.first.value === ".")) { | |
| 25674 isArray = false; | |
| 25675 // ...In the case of Object, if the left.value and state.tokens.curr.value | |
| 25676 // are not equal, then safely assume that this not "new Object()" | |
| 25677 if (left.value !== state.tokens.curr.value) { | |
| 25678 isObject = false; | |
| 25679 } | |
| 25680 } | |
| 25681 } | |
| 25682 | |
| 25683 advance(); | |
| 25684 | |
| 25685 if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { | |
| 25686 warning("W009", state.tokens.curr); | |
| 25687 } | |
| 25688 | |
| 25689 if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { | |
| 25690 warning("W010", state.tokens.curr); | |
| 25691 } | |
| 25692 | |
| 25693 if (left && state.tokens.curr.led) { | |
| 25694 left = state.tokens.curr.led(context, left); | |
| 25695 } else { | |
| 25696 error("E033", state.tokens.curr, state.tokens.curr.id); | |
| 25697 } | |
| 25698 } | |
| 25699 } | |
| 25700 | |
| 25701 state.nameStack.pop(); | |
| 25702 | |
| 25703 return left; | |
| 25704 } | |
| 25705 | |
| 25706 | |
| 25707 // Functions for conformance of style. | |
| 25708 | |
| 25709 function sameLine(first, second) { | |
| 25710 return first.line === (second.startLine || second.line); | |
| 25711 } | |
| 25712 | |
| 25713 function nobreaknonadjacent(left, right) { | |
| 25714 if (!state.option.laxbreak && !sameLine(left, right)) { | |
| 25715 warning("W014", right, right.value); | |
| 25716 } | |
| 25717 } | |
| 25718 | |
| 25719 function nolinebreak(t) { | |
| 25720 if (!sameLine(t, state.tokens.next)) { | |
| 25721 warning("E022", t, t.value); | |
| 25722 } | |
| 25723 } | |
| 25724 | |
| 25725 /** | |
| 25726 * Validate the comma token in the "current" position of the token stream. | |
| 25727 * | |
| 25728 * @param {object} [opts] | |
| 25729 * @param {boolean} [opts.property] - flag indicating whether the current | |
| 25730 * comma token is situated directly within | |
| 25731 * an object initializer | |
| 25732 * @param {boolean} [opts.allowTrailing] - flag indicating whether the | |
| 25733 * current comma token may appear | |
| 25734 * directly before a delimiter | |
| 25735 * | |
| 25736 * @returns {boolean} flag indicating the validity of the current comma | |
| 25737 * token; `false` if the token directly causes a syntax | |
| 25738 * error, `true` otherwise | |
| 25739 */ | |
| 25740 function checkComma(opts) { | |
| 25741 var prev = state.tokens.prev; | |
| 25742 var curr = state.tokens.curr; | |
| 25743 opts = opts || {}; | |
| 25744 | |
| 25745 if (!sameLine(prev, curr)) { | |
| 25746 if (!state.option.laxcomma) { | |
| 25747 if (checkComma.first) { | |
| 25748 warning("I001", curr); | |
| 25749 checkComma.first = false; | |
| 25750 } | |
| 25751 warning("W014", prev, curr.value); | |
| 25752 } | |
| 25753 } | |
| 25754 | |
| 25755 if (state.tokens.next.identifier && !(opts.property && state.inES5())) { | |
| 25756 // Keywords that cannot follow a comma operator. | |
| 25757 switch (state.tokens.next.value) { | |
| 25758 case "break": | |
| 25759 case "case": | |
| 25760 case "catch": | |
| 25761 case "continue": | |
| 25762 case "default": | |
| 25763 case "do": | |
| 25764 case "else": | |
| 25765 case "finally": | |
| 25766 case "for": | |
| 25767 case "if": | |
| 25768 case "in": | |
| 25769 case "instanceof": | |
| 25770 case "return": | |
| 25771 case "switch": | |
| 25772 case "throw": | |
| 25773 case "try": | |
| 25774 case "var": | |
| 25775 case "let": | |
| 25776 case "while": | |
| 25777 case "with": | |
| 25778 error("E024", state.tokens.next, state.tokens.next.value); | |
| 25779 return false; | |
| 25780 } | |
| 25781 } | |
| 25782 | |
| 25783 if (state.tokens.next.type === "(punctuator)") { | |
| 25784 switch (state.tokens.next.value) { | |
| 25785 case "}": | |
| 25786 case "]": | |
| 25787 case ",": | |
| 25788 case ")": | |
| 25789 if (opts.allowTrailing) { | |
| 25790 return true; | |
| 25791 } | |
| 25792 | |
| 25793 error("E024", state.tokens.next, state.tokens.next.value); | |
| 25794 return false; | |
| 25795 } | |
| 25796 } | |
| 25797 return true; | |
| 25798 } | |
| 25799 | |
| 25800 /** | |
| 25801 * Factory function for creating "symbols"--objects that will be inherited by | |
| 25802 * tokens. The objects created by this function are stored in a symbol table | |
| 25803 * and set as the prototype of the tokens generated by the lexer. | |
| 25804 * | |
| 25805 * Note that this definition of "symbol" describes an implementation detail | |
| 25806 * of JSHint and is not related to the ECMAScript value type introduced in | |
| 25807 * ES2015. | |
| 25808 * | |
| 25809 * @param {string} s - the name of the token; for keywords (e.g. `void`) and | |
| 25810 * delimiters (e.g.. `[`), this is the token's text | |
| 25811 * representation; for literals (e.g. numbers) and other | |
| 25812 * "special" tokens (e.g. the end-of-file marker) this is | |
| 25813 * a parenthetical value | |
| 25814 * @param {number} p - the left-binding power of the token as used by the | |
| 25815 * Pratt parsing semantics | |
| 25816 * | |
| 25817 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25818 * support cases where further refinement is necessary) | |
| 25819 */ | |
| 25820 function symbol(s, p) { | |
| 25821 var x = state.syntax[s]; | |
| 25822 if (!x || typeof x !== "object") { | |
| 25823 state.syntax[s] = x = { | |
| 25824 id: s, | |
| 25825 lbp: p, | |
| 25826 // Symbols that accept a right-hand side do so with a binding power | |
| 25827 // that is commonly identical to their left-binding power. (This value | |
| 25828 // is relevant when determining if the grouping operator is necessary | |
| 25829 // to override the precedence of surrounding operators.) Because the | |
| 25830 // exponentiation operator's left-binding power and right-binding power | |
| 25831 // are distinct, the values must be encoded separately. | |
| 25832 rbp: p, | |
| 25833 value: s | |
| 25834 }; | |
| 25835 } | |
| 25836 return x; | |
| 25837 } | |
| 25838 | |
| 25839 /** | |
| 25840 * Convenience function for defining delimiter symbols. | |
| 25841 * | |
| 25842 * @param {string} s - the name of the symbol | |
| 25843 * | |
| 25844 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25845 * support cases where further refinement is necessary) | |
| 25846 */ | |
| 25847 function delim(s) { | |
| 25848 var x = symbol(s, 0); | |
| 25849 x.delim = true; | |
| 25850 return x; | |
| 25851 } | |
| 25852 | |
| 25853 /** | |
| 25854 * Convenience function for defining statement-denoting symbols. | |
| 25855 * | |
| 25856 * @param {string} s - the name of the symbol | |
| 25857 * @param {function} f - the first null denotation function for the symbol; | |
| 25858 * see the `expression` function for more detail | |
| 25859 * | |
| 25860 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25861 * support cases where further refinement is necessary) | |
| 25862 */ | |
| 25863 function stmt(s, f) { | |
| 25864 var x = delim(s); | |
| 25865 x.identifier = x.reserved = true; | |
| 25866 x.fud = f; | |
| 25867 return x; | |
| 25868 } | |
| 25869 | |
| 25870 /** | |
| 25871 * Convenience function for defining block-statement-denoting symbols. | |
| 25872 * | |
| 25873 * A block-statement-denoting symbol is one like 'if' or 'for', which will be | |
| 25874 * followed by a block and will not have to end with a semicolon. | |
| 25875 * | |
| 25876 * @param {string} s - the name of the symbol | |
| 25877 * @param {function} - the first null denotation function for the symbol; see | |
| 25878 * the `expression` function for more detail | |
| 25879 * | |
| 25880 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25881 * support cases where further refinement is necessary) | |
| 25882 */ | |
| 25883 function blockstmt(s, f) { | |
| 25884 var x = stmt(s, f); | |
| 25885 x.block = true; | |
| 25886 return x; | |
| 25887 } | |
| 25888 /** | |
| 25889 * Denote a given JSHint symbol as an identifier and a reserved keyword. | |
| 25890 * | |
| 25891 * @param {object} - a JSHint symbol value | |
| 25892 * | |
| 25893 * @returns {object} - the provided object | |
| 25894 */ | |
| 25895 function reserveName(x) { | |
| 25896 var c = x.id.charAt(0); | |
| 25897 if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) { | |
| 25898 x.identifier = x.reserved = true; | |
| 25899 } | |
| 25900 return x; | |
| 25901 } | |
| 25902 | |
| 25903 /** | |
| 25904 * Convenience function for defining "prefix" symbols--operators that accept | |
| 25905 * expressions as a right-hand side. | |
| 25906 * | |
| 25907 * @param {string} s - the name of the symbol | |
| 25908 * @param {function} [f] - the first null denotation function for the symbol; | |
| 25909 * see the `expression` function for more detail | |
| 25910 * | |
| 25911 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25912 * support cases where further refinement is necessary) | |
| 25913 */ | |
| 25914 function prefix(s, f) { | |
| 25915 var x = symbol(s, 150); | |
| 25916 reserveName(x); | |
| 25917 | |
| 25918 x.nud = (typeof f === "function") ? f : function(context) { | |
| 25919 this.arity = "unary"; | |
| 25920 this.right = expression(context, 150); | |
| 25921 | |
| 25922 if (this.id === "++" || this.id === "--") { | |
| 25923 if (state.option.plusplus) { | |
| 25924 warning("W016", this, this.id); | |
| 25925 } | |
| 25926 | |
| 25927 if (this.right) { | |
| 25928 checkLeftSideAssign(context, this.right, this); | |
| 25929 } | |
| 25930 } | |
| 25931 | |
| 25932 return this; | |
| 25933 }; | |
| 25934 | |
| 25935 return x; | |
| 25936 } | |
| 25937 | |
| 25938 /** | |
| 25939 * Convenience function for defining "type" symbols--those that describe | |
| 25940 * literal values. | |
| 25941 * | |
| 25942 * @param {string} s - the name of the symbol | |
| 25943 * @param {function} f - the first null denotation function for the symbol; | |
| 25944 * see the `expression` function for more detail | |
| 25945 * | |
| 25946 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25947 * support cases where further refinement is necessary) | |
| 25948 */ | |
| 25949 function type(s, f) { | |
| 25950 var x = symbol(s, 0); | |
| 25951 x.type = s; | |
| 25952 x.nud = f; | |
| 25953 return x; | |
| 25954 } | |
| 25955 | |
| 25956 /** | |
| 25957 * Convenience function for defining JSHint symbols for reserved | |
| 25958 * keywords--those that are restricted from use as bindings (and as property | |
| 25959 * names in ECMAScript 3 environments). | |
| 25960 * | |
| 25961 * @param {string} s - the name of the symbol | |
| 25962 * @param {function} func - the first null denotation function for the | |
| 25963 * symbol; see the `expression` function for more | |
| 25964 * detail | |
| 25965 * | |
| 25966 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25967 * support cases where further refinement is necessary) | |
| 25968 */ | |
| 25969 function reserve(name, func) { | |
| 25970 var x = type(name, func); | |
| 25971 x.identifier = true; | |
| 25972 x.reserved = true; | |
| 25973 return x; | |
| 25974 } | |
| 25975 | |
| 25976 /** | |
| 25977 * Convenience function for defining JSHint symbols for keywords that are | |
| 25978 * only reserved in some circumstances. | |
| 25979 * | |
| 25980 * @param {string} name - the name of the symbol | |
| 25981 * @param {object} [meta] - a collection of optional arguments | |
| 25982 * @param {function} [meta.nud] -the null denotation function for the symbol; | |
| 25983 * see the `expression` function for more detail | |
| 25984 * @param {boolean} [meta.es5] - `true` if the identifier is reserved | |
| 25985 * in ECMAScript 5 or later | |
| 25986 * @param {boolean} [meta.strictOnly] - `true` if the identifier is only | |
| 25987 * reserved in strict mode code. | |
| 25988 * | |
| 25989 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 25990 * support cases where further refinement is necessary) | |
| 25991 */ | |
| 25992 function FutureReservedWord(name, meta) { | |
| 25993 var x = type(name, state.syntax["(identifier)"].nud); | |
| 25994 | |
| 25995 meta = meta || {}; | |
| 25996 meta.isFutureReservedWord = true; | |
| 25997 | |
| 25998 x.value = name; | |
| 25999 x.identifier = true; | |
| 26000 x.reserved = true; | |
| 26001 x.meta = meta; | |
| 26002 | |
| 26003 return x; | |
| 26004 } | |
| 26005 | |
| 26006 /** | |
| 26007 * Convenience function for defining "infix" symbols--operators that require | |
| 26008 * operands as both "land-hand side" and "right-hand side". | |
| 26009 * | |
| 26010 * @param {string} s - the name of the symbol | |
| 26011 * @param {function} [f] - a function to be invoked that consumes the | |
| 26012 * right-hand side of the operator | |
| 26013 * @param {number} p - the left-binding power of the token as used by the | |
| 26014 * Pratt parsing semantics | |
| 26015 * @param {boolean} [w] - if `true` | |
| 26016 * | |
| 26017 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 26018 * support cases where further refinement is necessary) | |
| 26019 */ | |
| 26020 function infix(s, f, p, w) { | |
| 26021 var x = symbol(s, p); | |
| 26022 reserveName(x); | |
| 26023 x.infix = true; | |
| 26024 x.led = function(context, left) { | |
| 26025 if (!w) { | |
| 26026 nobreaknonadjacent(state.tokens.prev, state.tokens.curr); | |
| 26027 } | |
| 26028 if ((s === "in" || s === "instanceof") && left.id === "!") { | |
| 26029 warning("W018", left, "!"); | |
| 26030 } | |
| 26031 if (typeof f === "function") { | |
| 26032 return f(context, left, this); | |
| 26033 } else { | |
| 26034 this.left = left; | |
| 26035 this.right = expression(context, p); | |
| 26036 return this; | |
| 26037 } | |
| 26038 }; | |
| 26039 return x; | |
| 26040 } | |
| 26041 | |
| 26042 /** | |
| 26043 * Convenience function for defining the `=>` token as used in arrow | |
| 26044 * functions. | |
| 26045 * | |
| 26046 * @param {string} s - the name of the symbol | |
| 26047 * | |
| 26048 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 26049 * support cases where further refinement is necessary) | |
| 26050 */ | |
| 26051 function application(s) { | |
| 26052 var x = symbol(s, 42); | |
| 26053 | |
| 26054 x.infix = true; | |
| 26055 x.led = function(context, left) { | |
| 26056 nobreaknonadjacent(state.tokens.prev, state.tokens.curr); | |
| 26057 | |
| 26058 this.left = left; | |
| 26059 this.right = doFunction(context, { type: "arrow", loneArg: left }); | |
| 26060 return this; | |
| 26061 }; | |
| 26062 return x; | |
| 26063 } | |
| 26064 | |
| 26065 /** | |
| 26066 * Convenience function for defining JSHint symbols for relation operators. | |
| 26067 * | |
| 26068 * @param {string} s - the name of the symbol | |
| 26069 * @param {function} [f] - a function to be invoked to enforce any additional | |
| 26070 * linting rules. | |
| 26071 * | |
| 26072 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 26073 * support cases where further refinement is necessary) | |
| 26074 */ | |
| 26075 function relation(s, f) { | |
| 26076 var x = symbol(s, 100); | |
| 26077 | |
| 26078 x.infix = true; | |
| 26079 x.led = function(context, left) { | |
| 26080 nobreaknonadjacent(state.tokens.prev, state.tokens.curr); | |
| 26081 this.left = left; | |
| 26082 var right = this.right = expression(context, 100); | |
| 26083 | |
| 26084 if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) { | |
| 26085 warning("W019", this); | |
| 26086 } else if (f) { | |
| 26087 f.apply(this, [context, left, right]); | |
| 26088 } | |
| 26089 | |
| 26090 if (!left || !right) { | |
| 26091 quit("E041", state.tokens.curr); | |
| 26092 } | |
| 26093 | |
| 26094 if (left.id === "!") { | |
| 26095 warning("W018", left, "!"); | |
| 26096 } | |
| 26097 | |
| 26098 if (right.id === "!") { | |
| 26099 warning("W018", right, "!"); | |
| 26100 } | |
| 26101 | |
| 26102 return this; | |
| 26103 }; | |
| 26104 return x; | |
| 26105 } | |
| 26106 | |
| 26107 /** | |
| 26108 * Determine if a given token marks the beginning of a UnaryExpression. | |
| 26109 * | |
| 26110 * @param {object} token | |
| 26111 * | |
| 26112 * @returns {boolean} | |
| 26113 */ | |
| 26114 function beginsUnaryExpression(token) { | |
| 26115 return token.arity === "unary" && token.id !== "++" && token.id !== "--"; | |
| 26116 } | |
| 26117 | |
| 26118 var typeofValues = {}; | |
| 26119 typeofValues.legacy = [ | |
| 26120 // E4X extended the `typeof` operator to return "xml" for the XML and | |
| 26121 // XMLList types it introduced. | |
| 26122 // Ref: 11.3.2 The typeof Operator | |
| 26123 // http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-357.pdf | |
| 26124 "xml", | |
| 26125 // IE<9 reports "unknown" when the `typeof` operator is applied to an | |
| 26126 // object existing across a COM+ bridge. In lieu of official documentation | |
| 26127 // (which does not exist), see: | |
| 26128 // http://robertnyman.com/2005/12/21/what-is-typeof-unknown/ | |
| 26129 "unknown" | |
| 26130 ]; | |
| 26131 typeofValues.es3 = [ | |
| 26132 "undefined", "boolean", "number", "string", "function", "object", | |
| 26133 ]; | |
| 26134 typeofValues.es3 = typeofValues.es3.concat(typeofValues.legacy); | |
| 26135 typeofValues.es6 = typeofValues.es3.concat("symbol", "bigint"); | |
| 26136 | |
| 26137 /** | |
| 26138 * Validate comparisons between the result of a `typeof` expression and a | |
| 26139 * string literal. | |
| 26140 * | |
| 26141 * @param {token} [left] - one of the values being compared | |
| 26142 * @param {token} [right] - the other value being compared | |
| 26143 * @param {object} state - the global state object (see `state.js`) | |
| 26144 * | |
| 26145 * @returns {boolean} - `false` if the second token describes a `typeof` | |
| 26146 * expression and the first token is a string literal | |
| 26147 * whose value is never returned by that operator; | |
| 26148 * `true` otherwise | |
| 26149 */ | |
| 26150 function isTypoTypeof(left, right, state) { | |
| 26151 var values; | |
| 26152 | |
| 26153 if (state.option.notypeof) | |
| 26154 return false; | |
| 26155 | |
| 26156 if (!left || !right) | |
| 26157 return false; | |
| 26158 | |
| 26159 values = state.inES6() ? typeofValues.es6 : typeofValues.es3; | |
| 26160 | |
| 26161 if (right.type === "(identifier)" && right.value === "typeof" && left.type === "(string)") { | |
| 26162 if (left.value === "bigint") { | |
| 26163 if (!state.option.unstable.bigint) { | |
| 26164 warning("W144", left, "BigInt", "bigint"); | |
| 26165 } | |
| 26166 | |
| 26167 return false; | |
| 26168 } | |
| 26169 | |
| 26170 return !_.includes(values, left.value); | |
| 26171 } | |
| 26172 | |
| 26173 return false; | |
| 26174 } | |
| 26175 | |
| 26176 /** | |
| 26177 * Determine if a given token describes the built-in `eval` function. | |
| 26178 * | |
| 26179 * @param {token} left | |
| 26180 * @param {object} state - the global state object (see `state.js`) | |
| 26181 * | |
| 26182 * @returns {boolean} | |
| 26183 */ | |
| 26184 function isGlobalEval(left, state) { | |
| 26185 var isGlobal = false; | |
| 26186 | |
| 26187 // permit methods to refer to an "eval" key in their own context | |
| 26188 if (left.type === "this" && state.funct["(context)"] === null) { | |
| 26189 isGlobal = true; | |
| 26190 } | |
| 26191 // permit use of "eval" members of objects | |
| 26192 else if (left.type === "(identifier)") { | |
| 26193 if (state.option.node && left.value === "global") { | |
| 26194 isGlobal = true; | |
| 26195 } | |
| 26196 | |
| 26197 else if (state.option.browser && (left.value === "window" || left.value === "document")) { | |
| 26198 isGlobal = true; | |
| 26199 } | |
| 26200 } | |
| 26201 | |
| 26202 return isGlobal; | |
| 26203 } | |
| 26204 | |
| 26205 /** | |
| 26206 * Determine if a given token describes a property of a built-in object. | |
| 26207 * | |
| 26208 * @param {token} left | |
| 26209 * | |
| 26210 * @returns {boolean} | |
| 26211 */ | |
| 26212 function findNativePrototype(left) { | |
| 26213 var natives = [ | |
| 26214 "Array", "ArrayBuffer", "Boolean", "Collator", "DataView", "Date", | |
| 26215 "DateTimeFormat", "Error", "EvalError", "Float32Array", "Float64Array", | |
| 26216 "Function", "Infinity", "Intl", "Int16Array", "Int32Array", "Int8Array", | |
| 26217 "Iterator", "Number", "NumberFormat", "Object", "RangeError", | |
| 26218 "ReferenceError", "RegExp", "StopIteration", "String", "SyntaxError", | |
| 26219 "TypeError", "Uint16Array", "Uint32Array", "Uint8Array", "Uint8ClampedArray", | |
| 26220 "URIError" | |
| 26221 ]; | |
| 26222 | |
| 26223 function walkPrototype(obj) { | |
| 26224 if (typeof obj !== "object") return; | |
| 26225 return obj.right === "prototype" ? obj : walkPrototype(obj.left); | |
| 26226 } | |
| 26227 | |
| 26228 function walkNative(obj) { | |
| 26229 while (!obj.identifier && typeof obj.left === "object") | |
| 26230 obj = obj.left; | |
| 26231 | |
| 26232 if (obj.identifier && natives.indexOf(obj.value) >= 0 && | |
| 26233 state.funct["(scope)"].isPredefined(obj.value)) { | |
| 26234 return obj.value; | |
| 26235 } | |
| 26236 } | |
| 26237 | |
| 26238 var prototype = walkPrototype(left); | |
| 26239 if (prototype) return walkNative(prototype); | |
| 26240 } | |
| 26241 | |
| 26242 /** | |
| 26243 * Determine if the given token is a valid assignment target; emit errors | |
| 26244 * and/or warnings as appropriate | |
| 26245 * | |
| 26246 * @param {number} context - the parsing context; see `prod-params.js` for | |
| 26247 * more information | |
| 26248 * @param {token} left - the left hand side of the assignment | |
| 26249 * @param {token=} assignToken - the token for the assignment, used for | |
| 26250 * reporting | |
| 26251 * @param {object=} options - optional object | |
| 26252 * @param {boolean} options.allowDestructuring - whether to allow | |
| 26253 * destructuring binding | |
| 26254 * | |
| 26255 * @returns {boolean} Whether the left hand side is OK | |
| 26256 */ | |
| 26257 function checkLeftSideAssign(context, left, assignToken, options) { | |
| 26258 | |
| 26259 var allowDestructuring = options && options.allowDestructuring; | |
| 26260 | |
| 26261 assignToken = assignToken || left; | |
| 26262 | |
| 26263 if (state.option.freeze) { | |
| 26264 var nativeObject = findNativePrototype(left); | |
| 26265 if (nativeObject) | |
| 26266 warning("W121", left, nativeObject); | |
| 26267 } | |
| 26268 | |
| 26269 if (left.identifier && !left.isMetaProperty) { | |
| 26270 // The `reassign` method also calls `modify`, but we are specific in | |
| 26271 // order to catch function re-assignment and globals re-assignment | |
| 26272 state.funct["(scope)"].block.reassign(left.value, left); | |
| 26273 } | |
| 26274 | |
| 26275 if (left.id === ".") { | |
| 26276 if (!left.left || left.left.value === "arguments" && !state.isStrict()) { | |
| 26277 warning("W143", assignToken); | |
| 26278 } | |
| 26279 | |
| 26280 state.nameStack.set(state.tokens.prev); | |
| 26281 return true; | |
| 26282 } else if (left.id === "{" || left.id === "[") { | |
| 26283 if (!allowDestructuring || !left.destructAssign) { | |
| 26284 if (left.id === "{" || !left.left) { | |
| 26285 warning("E031", assignToken); | |
| 26286 } else if (left.left.value === "arguments" && !state.isStrict()) { | |
| 26287 warning("W143", assignToken); | |
| 26288 } | |
| 26289 } | |
| 26290 | |
| 26291 if (left.id === "[") { | |
| 26292 state.nameStack.set(left.right); | |
| 26293 } | |
| 26294 | |
| 26295 return true; | |
| 26296 } else if (left.identifier && !isReserved(context, left) && !left.isMetaProperty) { | |
| 26297 if (state.funct["(scope)"].bindingtype(left.value) === "exception") { | |
| 26298 warning("W022", left); | |
| 26299 } | |
| 26300 | |
| 26301 if (left.value === "eval" && state.isStrict()) { | |
| 26302 error("E031", assignToken); | |
| 26303 return false; | |
| 26304 } else if (left.value === "arguments") { | |
| 26305 if (!state.isStrict()) { | |
| 26306 warning("W143", assignToken); | |
| 26307 } else { | |
| 26308 error("E031", assignToken); | |
| 26309 return false; | |
| 26310 } | |
| 26311 } | |
| 26312 state.nameStack.set(left); | |
| 26313 return true; | |
| 26314 } | |
| 26315 | |
| 26316 error("E031", assignToken); | |
| 26317 | |
| 26318 return false; | |
| 26319 } | |
| 26320 | |
| 26321 /** | |
| 26322 * Convenience function for defining JSHint symbols for assignment operators. | |
| 26323 * | |
| 26324 * @param {string} s - the name of the symbol | |
| 26325 * @param {function} [f] - a function to be invoked that consumes the | |
| 26326 * right-hand side of the operator (see the `infix` | |
| 26327 * function) | |
| 26328 * | |
| 26329 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 26330 * support cases where further refinement is necessary) | |
| 26331 */ | |
| 26332 function assignop(s, f) { | |
| 26333 var x = infix(s, typeof f === "function" ? f : function(context, left, that) { | |
| 26334 that.left = left; | |
| 26335 | |
| 26336 checkLeftSideAssign(context, left, that, { allowDestructuring: true }); | |
| 26337 | |
| 26338 that.right = expression(context, 10); | |
| 26339 | |
| 26340 return that; | |
| 26341 }, 20); | |
| 26342 | |
| 26343 x.exps = true; | |
| 26344 x.assign = true; | |
| 26345 | |
| 26346 return x; | |
| 26347 } | |
| 26348 | |
| 26349 /** | |
| 26350 * Convenience function for defining JSHint symbols for bitwise operators. | |
| 26351 * | |
| 26352 * @param {string} s - the name of the symbol | |
| 26353 * @param {function} [f] - the left denotation function for the symbol; see | |
| 26354 * the `expression` function for more detail | |
| 26355 * @param {number} p - the left-binding power of the token as used by the | |
| 26356 * Pratt parsing semantics | |
| 26357 * | |
| 26358 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 26359 * support cases where further refinement is necessary) | |
| 26360 */ | |
| 26361 function bitwise(s, f, p) { | |
| 26362 var x = symbol(s, p); | |
| 26363 reserveName(x); | |
| 26364 x.infix = true; | |
| 26365 x.led = (typeof f === "function") ? f : function(context, left) { | |
| 26366 if (state.option.bitwise) { | |
| 26367 warning("W016", this, this.id); | |
| 26368 } | |
| 26369 this.left = left; | |
| 26370 this.right = expression(context, p); | |
| 26371 return this; | |
| 26372 }; | |
| 26373 return x; | |
| 26374 } | |
| 26375 | |
| 26376 /** | |
| 26377 * Convenience function for defining JSHint symbols for bitwise assignment | |
| 26378 * operators. See the `assignop` function for more detail. | |
| 26379 * | |
| 26380 * @param {string} s - the name of the symbol | |
| 26381 * | |
| 26382 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 26383 * support cases where further refinement is necessary) | |
| 26384 */ | |
| 26385 function bitwiseassignop(s) { | |
| 26386 symbol(s, 20).exps = true; | |
| 26387 return infix(s, function(context, left, that) { | |
| 26388 if (state.option.bitwise) { | |
| 26389 warning("W016", that, that.id); | |
| 26390 } | |
| 26391 | |
| 26392 checkLeftSideAssign(context, left, that); | |
| 26393 | |
| 26394 that.right = expression(context, 10); | |
| 26395 | |
| 26396 return that; | |
| 26397 }, 20); | |
| 26398 } | |
| 26399 | |
| 26400 /** | |
| 26401 * Convenience function for defining JSHint symbols for those operators which | |
| 26402 * have a single operand that appears before them in the source code. | |
| 26403 * | |
| 26404 * @param {string} s - the name of the symbol | |
| 26405 * | |
| 26406 * @returns {object} - the object describing the JSHint symbol (provided to | |
| 26407 * support cases where further refinement is necessary) | |
| 26408 */ | |
| 26409 function suffix(s) { | |
| 26410 var x = symbol(s, 150); | |
| 26411 | |
| 26412 x.led = function(context, left) { | |
| 26413 // this = suffix e.g. "++" punctuator | |
| 26414 // left = symbol operated e.g. "a" identifier or "a.b" punctuator | |
| 26415 if (state.option.plusplus) { | |
| 26416 warning("W016", this, this.id); | |
| 26417 } | |
| 26418 | |
| 26419 checkLeftSideAssign(context, left, this); | |
| 26420 | |
| 26421 this.left = left; | |
| 26422 return this; | |
| 26423 }; | |
| 26424 return x; | |
| 26425 } | |
| 26426 | |
| 26427 /** | |
| 26428 * Retrieve the value of the current token if it is an identifier and | |
| 26429 * optionally advance the parser. | |
| 26430 * | |
| 26431 * @param {number} context - the parsing context; see `prod-params.js` for | |
| 26432 * more information | |
| 26433 * @param {boolean} [prop] -`true` if this identifier is that of an object | |
| 26434 * property | |
| 26435 * @param {boolean} [preserve] - `true` if the token should not be consumed | |
| 26436 * | |
| 26437 * @returns {string|undefined} - the value of the identifier, if present | |
| 26438 */ | |
| 26439 function optionalidentifier(context, prop, preserve) { | |
| 26440 if (!state.tokens.next.identifier) { | |
| 26441 return; | |
| 26442 } | |
| 26443 | |
| 26444 if (!preserve) { | |
| 26445 advance(); | |
| 26446 } | |
| 26447 | |
| 26448 var curr = state.tokens.curr; | |
| 26449 var val = state.tokens.curr.value; | |
| 26450 | |
| 26451 if (!isReserved(context, curr)) { | |
| 26452 return val; | |
| 26453 } | |
| 26454 | |
| 26455 if (prop) { | |
| 26456 if (state.inES5()) { | |
| 26457 return val; | |
| 26458 } | |
| 26459 } | |
| 26460 | |
| 26461 warning("W024", state.tokens.curr, state.tokens.curr.id); | |
| 26462 return val; | |
| 26463 } | |
| 26464 | |
| 26465 /** | |
| 26466 * Consume the "..." token which designates "spread" and "rest" operations if | |
| 26467 * it is present. If the operator is repeated, consume every repetition, and | |
| 26468 * issue a single error describing the syntax error. | |
| 26469 * | |
| 26470 * @param {string} operation - either "spread" or "rest" | |
| 26471 * | |
| 26472 * @returns {boolean} a value describing whether or not any tokens were | |
| 26473 * consumed in this way | |
| 26474 */ | |
| 26475 function spreadrest(operation) { | |
| 26476 if (!checkPunctuator(state.tokens.next, "...")) { | |
| 26477 return false; | |
| 26478 } | |
| 26479 | |
| 26480 if (!state.inES6(true)) { | |
| 26481 warning("W119", state.tokens.next, operation + " operator", "6"); | |
| 26482 } | |
| 26483 advance(); | |
| 26484 | |
| 26485 if (checkPunctuator(state.tokens.next, "...")) { | |
| 26486 warning("E024", state.tokens.next, "..."); | |
| 26487 while (checkPunctuator(state.tokens.next, "...")) { | |
| 26488 advance(); | |
| 26489 } | |
| 26490 } | |
| 26491 | |
| 26492 return true; | |
| 26493 } | |
| 26494 | |
| 26495 /** | |
| 26496 * Ensure that the current token is an identifier and retrieve its value. | |
| 26497 * | |
| 26498 * @param {number} context - the parsing context; see `prod-params.js` for | |
| 26499 * more information | |
| 26500 * @param {boolean} [prop] -`true` if this identifier is that of an object | |
| 26501 * property | |
| 26502 * | |
| 26503 * @returns {string|undefined} - the value of the identifier, if present | |
| 26504 */ | |
| 26505 function identifier(context, prop) { | |
| 26506 var i = optionalidentifier(context, prop, false); | |
| 26507 if (i) { | |
| 26508 return i; | |
| 26509 } | |
| 26510 | |
| 26511 error("E030", state.tokens.next, state.tokens.next.value); | |
| 26512 | |
| 26513 // The token should be consumed after a warning is issued so the parser | |
| 26514 // can continue as though an identifier were found. The semicolon token | |
| 26515 // should not be consumed in this way so that the parser interprets it as | |
| 26516 // a statement delimiter; | |
| 26517 if (state.tokens.next.id !== ";") { | |
| 26518 advance(); | |
| 26519 } | |
| 26520 } | |
| 26521 | |
| 26522 | |
| 26523 /** | |
| 26524 * Determine if the provided token may be evaluated and emit a linting | |
| 26525 * warning if this is note the case. | |
| 26526 * | |
| 26527 * @param {token} controlToken | |
| 26528 */ | |
| 26529 function reachable(controlToken) { | |
| 26530 var i = 0, t; | |
| 26531 if (state.tokens.next.id !== ";" || controlToken.inBracelessBlock) { | |
| 26532 return; | |
| 26533 } | |
| 26534 for (;;) { | |
| 26535 do { | |
| 26536 t = peek(i); | |
| 26537 i += 1; | |
| 26538 } while (t.id !== "(end)" && t.id === "(comment)"); | |
| 26539 | |
| 26540 if (t.reach) { | |
| 26541 return; | |
| 26542 } | |
| 26543 if (t.id !== "(endline)") { | |
| 26544 if (t.id === "function") { | |
| 26545 if (state.option.latedef === true) { | |
| 26546 warning("W026", t); | |
| 26547 } | |
| 26548 break; | |
| 26549 } | |
| 26550 | |
| 26551 warning("W027", t, t.value, controlToken.value); | |
| 26552 break; | |
| 26553 } | |
| 26554 } | |
| 26555 } | |
| 26556 | |
| 26557 /** | |
| 26558 * Consume the semicolon that delimits the statement currently being parsed, | |
| 26559 * emitting relevant warnings/errors as appropriate. | |
| 26560 * | |
| 26561 * @param {token} stmt - token describing the statement under consideration | |
| 26562 */ | |
| 26563 function parseFinalSemicolon(stmt) { | |
| 26564 if (state.tokens.next.id !== ";") { | |
| 26565 // don't complain about unclosed templates / strings | |
| 26566 if (state.tokens.next.isUnclosed) return advance(); | |
| 26567 | |
| 26568 var isSameLine = sameLine(state.tokens.curr, state.tokens.next) && | |
| 26569 state.tokens.next.id !== "(end)"; | |
| 26570 var blockEnd = checkPunctuator(state.tokens.next, "}"); | |
| 26571 | |
| 26572 if (isSameLine && !blockEnd && !(stmt.id === "do" && state.inES6(true))) { | |
| 26573 errorAt("E058", state.tokens.curr.line, state.tokens.curr.character); | |
| 26574 } else if (!state.option.asi) { | |
| 26575 | |
| 26576 // If this is the last statement in a block that ends on the same line | |
| 26577 // *and* option lastsemic is on, ignore the warning. Otherwise, issue | |
| 26578 // a warning about missing semicolon. | |
| 26579 if (!(blockEnd && isSameLine && state.option.lastsemic)) { | |
| 26580 warningAt("W033", state.tokens.curr.line, state.tokens.curr.character); | |
| 26581 } | |
| 26582 } | |
| 26583 } else { | |
| 26584 advance(";"); | |
| 26585 } | |
| 26586 } | |
| 26587 | |
| 26588 /** | |
| 26589 * Consume a statement. | |
| 26590 * | |
| 26591 * @param {number} context - the parsing context; see `prod-params.js` for | |
| 26592 * more information | |
| 26593 * | |
| 26594 * @returns {token} - the token describing the statement | |
| 26595 */ | |
| 26596 function statement(context) { | |
| 26597 var i = indent, r, t = state.tokens.next, hasOwnScope = false; | |
| 26598 | |
| 26599 context |= prodParams.initial; | |
| 26600 | |
| 26601 if (t.id === ";") { | |
| 26602 advance(";"); | |
| 26603 return; | |
| 26604 } | |
| 26605 | |
| 26606 // Is this a labelled statement? | |
| 26607 var res = isReserved(context, t); | |
| 26608 | |
| 26609 // We're being more tolerant here: if someone uses | |
| 26610 // a FutureReservedWord (that is not meant to start a statement) | |
| 26611 // as a label, we warn but proceed anyway. | |
| 26612 | |
| 26613 if (res && t.meta && t.meta.isFutureReservedWord && !t.fud) { | |
| 26614 warning("W024", t, t.id); | |
| 26615 res = false; | |
| 26616 } | |
| 26617 | |
| 26618 if (t.identifier && !res && peek().id === ":") { | |
| 26619 advance(); | |
| 26620 advance(":"); | |
| 26621 | |
| 26622 hasOwnScope = true; | |
| 26623 state.funct["(scope)"].stack(); | |
| 26624 state.funct["(scope)"].block.addLabel(t.value, { token: state.tokens.curr }); | |
| 26625 | |
| 26626 if (!state.tokens.next.labelled && state.tokens.next.value !== "{") { | |
| 26627 warning("W028", state.tokens.next, t.value, state.tokens.next.value); | |
| 26628 } | |
| 26629 | |
| 26630 t = state.tokens.next; | |
| 26631 } | |
| 26632 | |
| 26633 // Is it a lonely block? | |
| 26634 | |
| 26635 if (t.id === "{") { | |
| 26636 // Is it a switch case block? | |
| 26637 // | |
| 26638 // switch (foo) { | |
| 26639 // case bar: { <= here. | |
| 26640 // ... | |
| 26641 // } | |
| 26642 // } | |
| 26643 var iscase = (state.funct["(verb)"] === "case" && state.tokens.curr.value === ":"); | |
| 26644 block(context, true, true, false, false, iscase); | |
| 26645 | |
| 26646 if (hasOwnScope) { | |
| 26647 state.funct["(scope)"].unstack(); | |
| 26648 } | |
| 26649 | |
| 26650 return; | |
| 26651 } | |
| 26652 | |
| 26653 // Parse the statement. | |
| 26654 | |
| 26655 r = expression(context, 0); | |
| 26656 | |
| 26657 if (r && !(r.identifier && r.value === "function") && | |
| 26658 !(r.type === "(punctuator)" && r.left && | |
| 26659 r.left.identifier && r.left.value === "function")) { | |
| 26660 if (!state.isStrict() && state.stmtMissingStrict()) { | |
| 26661 warning("E007"); | |
| 26662 } | |
| 26663 } | |
| 26664 | |
| 26665 // Look for the final semicolon. | |
| 26666 | |
| 26667 if (!t.block) { | |
| 26668 if (!state.option.expr && (!r || !r.exps)) { | |
| 26669 warning("W030", state.tokens.curr); | |
| 26670 } else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") { | |
| 26671 warning("W031", t); | |
| 26672 } | |
| 26673 | |
| 26674 parseFinalSemicolon(t); | |
| 26675 } | |
| 26676 | |
| 26677 | |
| 26678 // Restore the indentation. | |
| 26679 | |
| 26680 indent = i; | |
| 26681 if (hasOwnScope) { | |
| 26682 state.funct["(scope)"].unstack(); | |
| 26683 } | |
| 26684 return r; | |
| 26685 } | |
| 26686 | |
| 26687 /** | |
| 26688 * Consume a series of statements until encountering either the end of the | |
| 26689 * program or a token that interrupts control flow. | |
| 26690 * | |
| 26691 * @param {number} context - the parsing context; see `prod-params.js` for | |
| 26692 * more information | |
| 26693 * | |
| 26694 * @returns {Array<token>} - the tokens consumed | |
| 26695 */ | |
| 26696 function statements(context) { | |
| 26697 var a = [], p; | |
| 26698 | |
| 26699 while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") { | |
| 26700 if (state.tokens.next.id === ";") { | |
| 26701 p = peek(); | |
| 26702 | |
| 26703 if (!p || (p.id !== "(" && p.id !== "[")) { | |
| 26704 warning("W032"); | |
| 26705 } | |
| 26706 | |
| 26707 advance(";"); | |
| 26708 } else { | |
| 26709 a.push(statement(context)); | |
| 26710 } | |
| 26711 } | |
| 26712 return a; | |
| 26713 } | |
| 26714 | |
| 26715 | |
| 26716 /** | |
| 26717 * Parse any directives in a directive prologue. | |
| 26718 */ | |
| 26719 function directives() { | |
| 26720 var current = state.tokens.next; | |
| 26721 while (state.tokens.next.id === "(string)") { | |
| 26722 var next = peekIgnoreEOL(); | |
| 26723 if (!isEndOfExpr(0, current, next)) { | |
| 26724 break; | |
| 26725 } | |
| 26726 current = next; | |
| 26727 | |
| 26728 advance(); | |
| 26729 var directive = state.tokens.curr.value; | |
| 26730 if (state.directive[directive] || | |
| 26731 (directive === "use strict" && state.option.strict === "implied")) { | |
| 26732 warning("W034", state.tokens.curr, directive); | |
| 26733 } | |
| 26734 | |
| 26735 // From ECMAScript 2016: | |
| 26736 // | |
| 26737 // > 14.1.2 Static Semantics: Early Errors | |
| 26738 // > | |
| 26739 // > [...] | |
| 26740 // > - It is a Syntax Error if ContainsUseStrict of FunctionBody is true | |
| 26741 // > and IsSimpleParameterList of FormalParameters is false. | |
| 26742 if (directive === "use strict" && state.inES7() && | |
| 26743 !state.funct["(global)"] && state.funct["(hasSimpleParams)"] === false) { | |
| 26744 error("E065", state.tokens.curr); | |
| 26745 } | |
| 26746 | |
| 26747 // there's no directive negation, so always set to true | |
| 26748 state.directive[directive] = true; | |
| 26749 | |
| 26750 parseFinalSemicolon(current); | |
| 26751 } | |
| 26752 | |
| 26753 if (state.isStrict()) { | |
| 26754 state.option.undef = true; | |
| 26755 } | |
| 26756 } | |
| 26757 | |
| 26758 /** | |
| 26759 * Parses a single block. A block is a sequence of statements wrapped in | |
| 26760 * braces. | |
| 26761 * | |
| 26762 * @param {number} context - parsing context | |
| 26763 * @param {boolean} ordinary - `true` for everything but function bodies and | |
| 26764 * try blocks | |
| 26765 * @param {boolean} [stmt] - `true` if block can be a single statement (e.g. | |
| 26766 * in if/for/while) | |
| 26767 * @param {boolean} [isfunc] - `true` if block is a function body | |
| 26768 * @param {boolean} [isfatarrow] - `true` if its a body of a fat arrow | |
| 26769 * function | |
| 26770 * @param {boolean} [iscase] - `true` if block is a switch case block | |
| 26771 * | |
| 26772 * @returns {token} - the token describing the block | |
| 26773 */ | |
| 26774 function block(context, ordinary, stmt, isfunc, isfatarrow, iscase) { | |
| 26775 var a, | |
| 26776 b = inblock, | |
| 26777 old_indent = indent, | |
| 26778 m, | |
| 26779 t, | |
| 26780 d; | |
| 26781 | |
| 26782 inblock = ordinary; | |
| 26783 | |
| 26784 t = state.tokens.next; | |
| 26785 | |
| 26786 var metrics = state.funct["(metrics)"]; | |
| 26787 metrics.nestedBlockDepth += 1; | |
| 26788 metrics.verifyMaxNestedBlockDepthPerFunction(); | |
| 26789 | |
| 26790 if (state.tokens.next.id === "{") { | |
| 26791 advance("{"); | |
| 26792 | |
| 26793 // create a new block scope | |
| 26794 state.funct["(scope)"].stack(); | |
| 26795 | |
| 26796 if (state.tokens.next.id !== "}") { | |
| 26797 indent += state.option.indent; | |
| 26798 while (!ordinary && state.tokens.next.from > indent) { | |
| 26799 indent += state.option.indent; | |
| 26800 } | |
| 26801 | |
| 26802 if (isfunc) { | |
| 26803 m = {}; | |
| 26804 for (d in state.directive) { | |
| 26805 m[d] = state.directive[d]; | |
| 26806 } | |
| 26807 directives(); | |
| 26808 | |
| 26809 state.funct["(isStrict)"] = state.isStrict(); | |
| 26810 | |
| 26811 if (state.option.strict && state.funct["(context)"]["(global)"]) { | |
| 26812 if (!m["use strict"] && !state.isStrict()) { | |
| 26813 warning("E007"); | |
| 26814 } | |
| 26815 } | |
| 26816 } | |
| 26817 | |
| 26818 a = statements(context); | |
| 26819 | |
| 26820 metrics.statementCount += a.length; | |
| 26821 | |
| 26822 indent -= state.option.indent; | |
| 26823 } else if (isfunc) { | |
| 26824 // Ensure property is set for functions with empty bodies. | |
| 26825 state.funct["(isStrict)"] = state.isStrict(); | |
| 26826 } | |
| 26827 | |
| 26828 advance("}", t); | |
| 26829 | |
| 26830 if (isfunc) { | |
| 26831 state.funct["(scope)"].validateParams(isfatarrow); | |
| 26832 if (m) { | |
| 26833 state.directive = m; | |
| 26834 } | |
| 26835 } | |
| 26836 | |
| 26837 state.funct["(scope)"].unstack(); | |
| 26838 | |
| 26839 indent = old_indent; | |
| 26840 } else if (!ordinary) { | |
| 26841 if (isfunc) { | |
| 26842 state.funct["(scope)"].stack(); | |
| 26843 | |
| 26844 if (stmt && !isfatarrow && !state.inMoz()) { | |
| 26845 error("W118", state.tokens.curr, "function closure expressions"); | |
| 26846 } | |
| 26847 | |
| 26848 if (isfatarrow) { | |
| 26849 state.funct["(scope)"].validateParams(true); | |
| 26850 } | |
| 26851 | |
| 26852 var expr = expression(context, 10); | |
| 26853 | |
| 26854 if (state.option.noreturnawait && context & prodParams.async && | |
| 26855 expr.identifier && expr.value === "await") { | |
| 26856 warning("W146", expr); | |
| 26857 } | |
| 26858 | |
| 26859 if (state.option.strict && state.funct["(context)"]["(global)"]) { | |
| 26860 if (!state.isStrict()) { | |
| 26861 warning("E007"); | |
| 26862 } | |
| 26863 } | |
| 26864 | |
| 26865 state.funct["(scope)"].unstack(); | |
| 26866 } else { | |
| 26867 error("E021", state.tokens.next, "{", state.tokens.next.value); | |
| 26868 } | |
| 26869 } else { | |
| 26870 | |
| 26871 state.funct["(scope)"].stack(); | |
| 26872 | |
| 26873 if (!stmt || state.option.curly) { | |
| 26874 warning("W116", state.tokens.next, "{", state.tokens.next.value); | |
| 26875 } | |
| 26876 | |
| 26877 // JSHint observes Annex B of the ECMAScript specification by default, | |
| 26878 // where function declarations are permitted in the statement positions | |
| 26879 // of IfStatements. | |
| 26880 var supportsFnDecl = state.funct["(verb)"] === "if" || | |
| 26881 state.tokens.curr.id === "else"; | |
| 26882 | |
| 26883 state.tokens.next.inBracelessBlock = true; | |
| 26884 indent += state.option.indent; | |
| 26885 // test indentation only if statement is in new line | |
| 26886 a = [statement(context)]; | |
| 26887 indent -= state.option.indent; | |
| 26888 | |
| 26889 if (a[0] && a[0].declaration && | |
| 26890 !(supportsFnDecl && a[0].id === "function")) { | |
| 26891 error("E048", a[0], a[0].id[0].toUpperCase() + a[0].id.slice(1)); | |
| 26892 } | |
| 26893 | |
| 26894 state.funct["(scope)"].unstack(); | |
| 26895 } | |
| 26896 | |
| 26897 // Don't clear and let it propagate out if it is "break", "return" or | |
| 26898 // similar in switch case | |
| 26899 switch (state.funct["(verb)"]) { | |
| 26900 case "break": | |
| 26901 case "continue": | |
| 26902 case "return": | |
| 26903 case "throw": | |
| 26904 if (iscase) { | |
| 26905 break; | |
| 26906 } | |
| 26907 | |
| 26908 /* falls through */ | |
| 26909 default: | |
| 26910 state.funct["(verb)"] = null; | |
| 26911 } | |
| 26912 | |
| 26913 inblock = b; | |
| 26914 if (ordinary && state.option.noempty && (!a || a.length === 0)) { | |
| 26915 warning("W035", state.tokens.prev); | |
| 26916 } | |
| 26917 metrics.nestedBlockDepth -= 1; | |
| 26918 return a; | |
| 26919 } | |
| 26920 | |
| 26921 | |
| 26922 /** | |
| 26923 * Update the global state which tracks all statically-identifiable property | |
| 26924 * names, and emit a warning if the `members` linting directive is in use and | |
| 26925 * does not include the given name. | |
| 26926 * | |
| 26927 * @param {string} m - the property name | |
| 26928 */ | |
| 26929 function countMember(m) { | |
| 26930 if (membersOnly && typeof membersOnly[m] !== "boolean") { | |
| 26931 warning("W036", state.tokens.curr, m); | |
| 26932 } | |
| 26933 if (typeof member[m] === "number") { | |
| 26934 member[m] += 1; | |
| 26935 } else { | |
| 26936 member[m] = 1; | |
| 26937 } | |
| 26938 } | |
| 26939 | |
| 26940 // Build the syntax table by declaring the syntactic elements of the language. | |
| 26941 | |
| 26942 type("(number)", function() { | |
| 26943 if (state.tokens.next.id === ".") { | |
| 26944 warning("W005", this); | |
| 26945 } | |
| 26946 | |
| 26947 return this; | |
| 26948 }); | |
| 26949 | |
| 26950 type("(string)", function() { | |
| 26951 return this; | |
| 26952 }); | |
| 26953 | |
| 26954 state.syntax["(identifier)"] = { | |
| 26955 type: "(identifier)", | |
| 26956 lbp: 0, | |
| 26957 identifier: true, | |
| 26958 | |
| 26959 nud: function(context) { | |
| 26960 var v = this.value; | |
| 26961 // If this identifier is the lone parameter to a shorthand "fat arrow" | |
| 26962 // function definition, i.e. | |
| 26963 // | |
| 26964 // x => x; | |
| 26965 // | |
| 26966 // ...it should not be considered as a variable in the current scope. It | |
| 26967 // will be added to the scope of the new function when the next token is | |
| 26968 // parsed, so it can be safely ignored for now. | |
| 26969 var isLoneArrowParam = state.tokens.next.id === "=>"; | |
| 26970 | |
| 26971 if (isReserved(context, this)) { | |
| 26972 warning("W024", this, v); | |
| 26973 } else if (!isLoneArrowParam && !state.funct["(comparray)"].check(v)) { | |
| 26974 state.funct["(scope)"].block.use(v, state.tokens.curr); | |
| 26975 } | |
| 26976 | |
| 26977 return this; | |
| 26978 }, | |
| 26979 | |
| 26980 led: function() { | |
| 26981 /* istanbul ignore next */ | |
| 26982 error("E033", state.tokens.next, state.tokens.next.value); | |
| 26983 } | |
| 26984 }; | |
| 26985 | |
| 26986 var baseTemplateSyntax = { | |
| 26987 identifier: false, | |
| 26988 template: true, | |
| 26989 }; | |
| 26990 state.syntax["(template)"] = _.extend({ | |
| 26991 lbp: 155, | |
| 26992 type: "(template)", | |
| 26993 nud: doTemplateLiteral, | |
| 26994 led: doTemplateLiteral, | |
| 26995 noSubst: false | |
| 26996 }, baseTemplateSyntax); | |
| 26997 | |
| 26998 state.syntax["(template middle)"] = _.extend({ | |
| 26999 lbp: 0, | |
| 27000 type: "(template middle)", | |
| 27001 noSubst: false | |
| 27002 }, baseTemplateSyntax); | |
| 27003 | |
| 27004 state.syntax["(template tail)"] = _.extend({ | |
| 27005 lbp: 0, | |
| 27006 type: "(template tail)", | |
| 27007 tail: true, | |
| 27008 noSubst: false | |
| 27009 }, baseTemplateSyntax); | |
| 27010 | |
| 27011 state.syntax["(no subst template)"] = _.extend({ | |
| 27012 lbp: 155, | |
| 27013 type: "(template)", | |
| 27014 nud: doTemplateLiteral, | |
| 27015 led: doTemplateLiteral, | |
| 27016 noSubst: true, | |
| 27017 tail: true // mark as tail, since it's always the last component | |
| 27018 }, baseTemplateSyntax); | |
| 27019 | |
| 27020 type("(regexp)", function() { | |
| 27021 return this; | |
| 27022 }); | |
| 27023 | |
| 27024 // ECMAScript parser | |
| 27025 | |
| 27026 delim("(endline)"); | |
| 27027 (function(x) { | |
| 27028 x.line = x.from = 0; | |
| 27029 })(delim("(begin)")); | |
| 27030 delim("(end)").reach = true; | |
| 27031 delim("(error)").reach = true; | |
| 27032 delim("}").reach = true; | |
| 27033 delim(")"); | |
| 27034 delim("]"); | |
| 27035 delim("\"").reach = true; | |
| 27036 delim("'").reach = true; | |
| 27037 delim(";"); | |
| 27038 delim(":").reach = true; | |
| 27039 delim("#"); | |
| 27040 | |
| 27041 reserve("else"); | |
| 27042 reserve("case").reach = true; | |
| 27043 reserve("catch"); | |
| 27044 reserve("default").reach = true; | |
| 27045 reserve("finally"); | |
| 27046 reserve("true", function() { return this; }); | |
| 27047 reserve("false", function() { return this; }); | |
| 27048 reserve("null", function() { return this; }); | |
| 27049 reserve("this", function() { | |
| 27050 if (state.isStrict() && !isMethod() && | |
| 27051 !state.option.validthis && ((state.funct["(statement)"] && | |
| 27052 state.funct["(name)"].charAt(0) > "Z") || state.funct["(global)"])) { | |
| 27053 warning("W040", this); | |
| 27054 } | |
| 27055 | |
| 27056 return this; | |
| 27057 }); | |
| 27058 reserve("super", function() { | |
| 27059 superNud.call(state.tokens.curr, this); | |
| 27060 | |
| 27061 return this; | |
| 27062 }); | |
| 27063 | |
| 27064 assignop("=", "assign"); | |
| 27065 assignop("+=", "assignadd"); | |
| 27066 assignop("-=", "assignsub"); | |
| 27067 assignop("*=", "assignmult"); | |
| 27068 assignop("/=", "assigndiv").nud = function() { | |
| 27069 /* istanbul ignore next */ | |
| 27070 error("E014"); | |
| 27071 }; | |
| 27072 assignop("%=", "assignmod"); | |
| 27073 assignop("**=", function(context, left, that) { | |
| 27074 if (!state.inES7()) { | |
| 27075 warning("W119", that, "Exponentiation operator", "7"); | |
| 27076 } | |
| 27077 | |
| 27078 that.left = left; | |
| 27079 | |
| 27080 checkLeftSideAssign(context, left, that); | |
| 27081 | |
| 27082 that.right = expression(context, 10); | |
| 27083 | |
| 27084 return that; | |
| 27085 }); | |
| 27086 | |
| 27087 bitwiseassignop("&="); | |
| 27088 bitwiseassignop("|="); | |
| 27089 bitwiseassignop("^="); | |
| 27090 bitwiseassignop("<<="); | |
| 27091 bitwiseassignop(">>="); | |
| 27092 bitwiseassignop(">>>="); | |
| 27093 infix(",", function(context, left, that) { | |
| 27094 if (state.option.nocomma) { | |
| 27095 warning("W127", that); | |
| 27096 } | |
| 27097 | |
| 27098 that.left = left; | |
| 27099 | |
| 27100 if (checkComma()) { | |
| 27101 that.right = expression(context, 10); | |
| 27102 } else { | |
| 27103 that.right = null; | |
| 27104 } | |
| 27105 | |
| 27106 return that; | |
| 27107 }, 10, true); | |
| 27108 | |
| 27109 infix("?", function(context, left, that) { | |
| 27110 increaseComplexityCount(); | |
| 27111 that.left = left; | |
| 27112 that.right = expression(context & ~prodParams.noin, 10); | |
| 27113 advance(":"); | |
| 27114 expression(context, 10); | |
| 27115 return that; | |
| 27116 }, 30); | |
| 27117 | |
| 27118 infix("||", function(context, left, that) { | |
| 27119 increaseComplexityCount(); | |
| 27120 that.left = left; | |
| 27121 that.right = expression(context, 40); | |
| 27122 return that; | |
| 27123 }, 40); | |
| 27124 | |
| 27125 var andPrecedence = 50; | |
| 27126 infix("&&", function(context, left, that) { | |
| 27127 increaseComplexityCount(); | |
| 27128 that.left = left; | |
| 27129 that.right = expression(context, andPrecedence); | |
| 27130 return that; | |
| 27131 }, andPrecedence); | |
| 27132 | |
| 27133 // The Exponentiation operator, introduced in ECMAScript 2016 | |
| 27134 // | |
| 27135 // ExponentiationExpression[Yield] : | |
| 27136 // UnaryExpression[?Yield] | |
| 27137 // UpdateExpression[?Yield] ** ExponentiationExpression[?Yield] | |
| 27138 infix("**", function(context, left, that) { | |
| 27139 if (!state.inES7()) { | |
| 27140 warning("W119", that, "Exponentiation operator", "7"); | |
| 27141 } | |
| 27142 | |
| 27143 // Disallow UnaryExpressions which are not wrapped in parenthesis | |
| 27144 if (!left.paren && beginsUnaryExpression(left)) { | |
| 27145 error("E024", that, "**"); | |
| 27146 } | |
| 27147 | |
| 27148 that.left = left; | |
| 27149 that.right = expression(context, that.rbp); | |
| 27150 return that; | |
| 27151 }, 150); | |
| 27152 state.syntax["**"].rbp = 140; | |
| 27153 bitwise("|", "bitor", 70); | |
| 27154 bitwise("^", "bitxor", 80); | |
| 27155 bitwise("&", "bitand", 90); | |
| 27156 relation("==", function(context, left, right) { | |
| 27157 var eqnull = state.option.eqnull && | |
| 27158 ((left && left.value) === "null" || (right && right.value) === "null"); | |
| 27159 | |
| 27160 switch (true) { | |
| 27161 case !eqnull && state.option.eqeqeq: | |
| 27162 this.from = this.character; | |
| 27163 warning("W116", this, "===", "=="); | |
| 27164 break; | |
| 27165 /* istanbul ignore next */ | |
| 27166 case isTypoTypeof(right, left, state): | |
| 27167 warning("W122", this, right.value); | |
| 27168 break; | |
| 27169 case isTypoTypeof(left, right, state): | |
| 27170 warning("W122", this, left.value); | |
| 27171 break; | |
| 27172 } | |
| 27173 | |
| 27174 return this; | |
| 27175 }); | |
| 27176 relation("===", function(context, left, right) { | |
| 27177 if (isTypoTypeof(right, left, state)) { | |
| 27178 warning("W122", this, right.value); | |
| 27179 } else if (isTypoTypeof(left, right, state)) { | |
| 27180 /* istanbul ignore next */ | |
| 27181 warning("W122", this, left.value); | |
| 27182 } | |
| 27183 return this; | |
| 27184 }); | |
| 27185 relation("!=", function(context, left, right) { | |
| 27186 var eqnull = state.option.eqnull && | |
| 27187 ((left && left.value) === "null" || (right && right.value) === "null"); | |
| 27188 | |
| 27189 if (!eqnull && state.option.eqeqeq) { | |
| 27190 this.from = this.character; | |
| 27191 warning("W116", this, "!==", "!="); | |
| 27192 } else if (isTypoTypeof(right, left, state)) { | |
| 27193 /* istanbul ignore next */ | |
| 27194 warning("W122", this, right.value); | |
| 27195 } else if (isTypoTypeof(left, right, state)) { | |
| 27196 warning("W122", this, left.value); | |
| 27197 } | |
| 27198 return this; | |
| 27199 }); | |
| 27200 relation("!==", function(context, left, right) { | |
| 27201 if (isTypoTypeof(right, left, state)) { | |
| 27202 warning("W122", this, right.value); | |
| 27203 } else if (isTypoTypeof(left, right, state)) { | |
| 27204 /* istanbul ignore next */ | |
| 27205 warning("W122", this, left.value); | |
| 27206 } | |
| 27207 return this; | |
| 27208 }); | |
| 27209 relation("<"); | |
| 27210 relation(">"); | |
| 27211 relation("<="); | |
| 27212 relation(">="); | |
| 27213 bitwise("<<", "shiftleft", 120); | |
| 27214 bitwise(">>", "shiftright", 120); | |
| 27215 bitwise(">>>", "shiftrightunsigned", 120); | |
| 27216 infix("in", "in", 120); | |
| 27217 infix("instanceof", function(context, left, token) { | |
| 27218 var right; | |
| 27219 var scope = state.funct["(scope)"]; | |
| 27220 token.left = left; | |
| 27221 token.right = right = expression(context, 120); | |
| 27222 | |
| 27223 // This condition reflects a syntax error which will be reported by the | |
| 27224 // `expression` function. | |
| 27225 if (!right) { | |
| 27226 return token; | |
| 27227 } | |
| 27228 | |
| 27229 if (right.id === "(number)" || | |
| 27230 right.id === "(string)" || | |
| 27231 right.value === "null" || | |
| 27232 (right.value === "undefined" && !scope.has("undefined")) || | |
| 27233 right.arity === "unary" || | |
| 27234 right.id === "{" || | |
| 27235 (right.id === "[" && !right.right) || | |
| 27236 right.id === "(regexp)" || | |
| 27237 (right.id === "(template)" && !right.tag)) { | |
| 27238 error("E060"); | |
| 27239 } | |
| 27240 | |
| 27241 if (right.id === "function") { | |
| 27242 warning("W139"); | |
| 27243 } | |
| 27244 | |
| 27245 return token; | |
| 27246 }, 120); | |
| 27247 infix("+", function(context, left, that) { | |
| 27248 var next = state.tokens.next; | |
| 27249 var right; | |
| 27250 that.left = left; | |
| 27251 that.right = right = expression(context, 130); | |
| 27252 | |
| 27253 if (left && right && left.id === "(string)" && right.id === "(string)") { | |
| 27254 left.value += right.value; | |
| 27255 left.character = right.character; | |
| 27256 if (!state.option.scripturl && reg.javascriptURL.test(left.value)) { | |
| 27257 warning("W050", left); | |
| 27258 } | |
| 27259 return left; | |
| 27260 } | |
| 27261 | |
| 27262 if (next.id === "+" || next.id === "++") { | |
| 27263 warning("W007", that.right); | |
| 27264 } | |
| 27265 | |
| 27266 return that; | |
| 27267 }, 130); | |
| 27268 prefix("+", function(context) { | |
| 27269 var next = state.tokens.next; | |
| 27270 this.arity = "unary"; | |
| 27271 this.right = expression(context, 150); | |
| 27272 | |
| 27273 if (next.id === "+" || next.id === "++") { | |
| 27274 warning("W007", this.right); | |
| 27275 } | |
| 27276 | |
| 27277 return this; | |
| 27278 }); | |
| 27279 infix("-", function(context, left, that) { | |
| 27280 var next = state.tokens.next; | |
| 27281 that.left = left; | |
| 27282 that.right = expression(context, 130); | |
| 27283 | |
| 27284 if (next.id === "-" || next.id === "--") { | |
| 27285 warning("W006", that.right); | |
| 27286 } | |
| 27287 | |
| 27288 return that; | |
| 27289 }, 130); | |
| 27290 prefix("-", function(context) { | |
| 27291 var next = state.tokens.next; | |
| 27292 this.arity = "unary"; | |
| 27293 this.right = expression(context, 150); | |
| 27294 | |
| 27295 if (next.id === "-" || next.id === "--") { | |
| 27296 warning("W006", this.right); | |
| 27297 } | |
| 27298 | |
| 27299 return this; | |
| 27300 }); | |
| 27301 infix("*", "mult", 140); | |
| 27302 infix("/", "div", 140); | |
| 27303 infix("%", "mod", 140); | |
| 27304 | |
| 27305 suffix("++"); | |
| 27306 prefix("++", "preinc"); | |
| 27307 state.syntax["++"].exps = true; | |
| 27308 | |
| 27309 suffix("--"); | |
| 27310 prefix("--", "predec"); | |
| 27311 state.syntax["--"].exps = true; | |
| 27312 | |
| 27313 prefix("delete", function(context) { | |
| 27314 this.arity = "unary"; | |
| 27315 var p = expression(context, 150); | |
| 27316 if (!p) { | |
| 27317 return this; | |
| 27318 } | |
| 27319 | |
| 27320 if (p.id !== "." && p.id !== "[") { | |
| 27321 warning("W051"); | |
| 27322 } | |
| 27323 this.first = p; | |
| 27324 | |
| 27325 // The `delete` operator accepts unresolvable references when not in strict | |
| 27326 // mode, so the operand may be undefined. | |
| 27327 if (p.identifier && !state.isStrict()) { | |
| 27328 p.forgiveUndef = true; | |
| 27329 } | |
| 27330 return this; | |
| 27331 }).exps = true; | |
| 27332 | |
| 27333 prefix("~", function(context) { | |
| 27334 if (state.option.bitwise) { | |
| 27335 warning("W016", this, "~"); | |
| 27336 } | |
| 27337 this.arity = "unary"; | |
| 27338 this.right = expression(context, 150); | |
| 27339 return this; | |
| 27340 }); | |
| 27341 | |
| 27342 infix("..."); | |
| 27343 | |
| 27344 prefix("!", function(context) { | |
| 27345 this.arity = "unary"; | |
| 27346 this.right = expression(context, 150); | |
| 27347 | |
| 27348 if (!this.right) { // '!' followed by nothing? Give up. | |
| 27349 quit("E041", this); | |
| 27350 } | |
| 27351 | |
| 27352 if (bang[this.right.id] === true) { | |
| 27353 warning("W018", this, "!"); | |
| 27354 } | |
| 27355 return this; | |
| 27356 }); | |
| 27357 | |
| 27358 prefix("typeof", function(context) { | |
| 27359 this.arity = "unary"; | |
| 27360 var p = expression(context, 150); | |
| 27361 this.first = this.right = p; | |
| 27362 | |
| 27363 if (!p) { // 'typeof' followed by nothing? Give up. | |
| 27364 quit("E041", this); | |
| 27365 } | |
| 27366 | |
| 27367 // The `typeof` operator accepts unresolvable references, so the operand | |
| 27368 // may be undefined. | |
| 27369 if (p.identifier) { | |
| 27370 p.forgiveUndef = true; | |
| 27371 } | |
| 27372 return this; | |
| 27373 }); | |
| 27374 prefix("new", function(context) { | |
| 27375 var mp = metaProperty(context, "target", function() { | |
| 27376 if (!state.inES6(true)) { | |
| 27377 warning("W119", state.tokens.prev, "new.target", "6"); | |
| 27378 } | |
| 27379 var inFunction, c = state.funct; | |
| 27380 while (c) { | |
| 27381 inFunction = !c["(global)"]; | |
| 27382 if (!c["(arrow)"]) { break; } | |
| 27383 c = c["(context)"]; | |
| 27384 } | |
| 27385 if (!inFunction) { | |
| 27386 warning("W136", state.tokens.prev, "new.target"); | |
| 27387 } | |
| 27388 }); | |
| 27389 if (mp) { return mp; } | |
| 27390 | |
| 27391 var c = expression(context, 155), i; | |
| 27392 if (c && c.id !== "function") { | |
| 27393 if (c.identifier) { | |
| 27394 switch (c.value) { | |
| 27395 case "Number": | |
| 27396 case "String": | |
| 27397 case "Boolean": | |
| 27398 case "Math": | |
| 27399 case "JSON": | |
| 27400 warning("W053", state.tokens.prev, c.value); | |
| 27401 break; | |
| 27402 case "Symbol": | |
| 27403 if (state.inES6()) { | |
| 27404 warning("W053", state.tokens.prev, c.value); | |
| 27405 } | |
| 27406 break; | |
| 27407 case "Function": | |
| 27408 if (!state.option.evil) { | |
| 27409 warning("W054"); | |
| 27410 } | |
| 27411 break; | |
| 27412 case "Date": | |
| 27413 case "RegExp": | |
| 27414 case "this": | |
| 27415 break; | |
| 27416 default: | |
| 27417 i = c.value.substr(0, 1); | |
| 27418 if (state.option.newcap && (i < "A" || i > "Z") && | |
| 27419 !state.funct["(scope)"].isPredefined(c.value)) { | |
| 27420 warning("W055", state.tokens.curr); | |
| 27421 } | |
| 27422 } | |
| 27423 } else { | |
| 27424 if (c.id !== "." && c.id !== "[" && c.id !== "(") { | |
| 27425 /* istanbul ignore next */ | |
| 27426 warning("W056", state.tokens.curr); | |
| 27427 } | |
| 27428 } | |
| 27429 } else { | |
| 27430 if (!state.option.supernew) | |
| 27431 warning("W057", this); | |
| 27432 } | |
| 27433 if (state.tokens.next.id !== "(" && !state.option.supernew) { | |
| 27434 warning("W058", state.tokens.curr, state.tokens.curr.value); | |
| 27435 } | |
| 27436 this.first = this.right = c; | |
| 27437 return this; | |
| 27438 }); | |
| 27439 state.syntax["new"].exps = true; | |
| 27440 | |
| 27441 | |
| 27442 var classDeclaration = blockstmt("class", function(context) { | |
| 27443 var className, classNameToken; | |
| 27444 var inexport = context & prodParams.export; | |
| 27445 | |
| 27446 if (!state.inES6()) { | |
| 27447 warning("W104", state.tokens.curr, "class", "6"); | |
| 27448 } | |
| 27449 state.inClassBody = true; | |
| 27450 | |
| 27451 // Class Declaration: 'class <Classname>' | |
| 27452 if (state.tokens.next.identifier && state.tokens.next.value !== "extends") { | |
| 27453 classNameToken = state.tokens.next; | |
| 27454 className = classNameToken.value; | |
| 27455 identifier(context); | |
| 27456 // unintialized, so that the 'extends' clause is parsed while the class is in TDZ | |
| 27457 state.funct["(scope)"].addbinding(className, { | |
| 27458 type: "class", | |
| 27459 initialized: false, | |
| 27460 token: classNameToken | |
| 27461 }); | |
| 27462 } | |
| 27463 | |
| 27464 // Class Declaration: 'class <Classname> extends <Superclass>' | |
| 27465 if (state.tokens.next.value === "extends") { | |
| 27466 advance("extends"); | |
| 27467 expression(context, 0); | |
| 27468 } | |
| 27469 | |
| 27470 if (classNameToken) { | |
| 27471 this.name = className; | |
| 27472 state.funct["(scope)"].initialize(className); | |
| 27473 if (inexport) { | |
| 27474 state.funct["(scope)"].setExported(className, classNameToken); | |
| 27475 } | |
| 27476 } | |
| 27477 state.funct["(scope)"].stack(); | |
| 27478 classBody(this, context); | |
| 27479 return this; | |
| 27480 }); | |
| 27481 classDeclaration.exps = true; | |
| 27482 classDeclaration.declaration = true; | |
| 27483 | |
| 27484 /* | |
| 27485 Class expression | |
| 27486 | |
| 27487 The Block- and Expression- handling for "class" are almost identical, except for the ordering of steps. | |
| 27488 In an expression:, the name should not be saved into the calling scope, but is still accessible inside the definition, so we open a new scope first, then save the name. We also mark it as used. | |
| 27489 */ | |
| 27490 prefix("class", function(context) { | |
| 27491 var className, classNameToken; | |
| 27492 | |
| 27493 if (!state.inES6()) { | |
| 27494 warning("W104", state.tokens.curr, "class", "6"); | |
| 27495 } | |
| 27496 state.inClassBody = true; | |
| 27497 | |
| 27498 // Class Declaration: 'class <Classname>' | |
| 27499 if (state.tokens.next.identifier && state.tokens.next.value !== "extends") { | |
| 27500 classNameToken = state.tokens.next; | |
| 27501 className = classNameToken.value; | |
| 27502 identifier(context); | |
| 27503 } | |
| 27504 | |
| 27505 // Class Declaration: 'class <Classname> extends <Superclass>' | |
| 27506 if (state.tokens.next.value === "extends") { | |
| 27507 advance("extends"); | |
| 27508 expression(context, 0); | |
| 27509 } | |
| 27510 | |
| 27511 state.funct["(scope)"].stack(); | |
| 27512 if (classNameToken) { | |
| 27513 this.name = className; | |
| 27514 state.funct["(scope)"].addbinding(className, { | |
| 27515 type: "class", | |
| 27516 initialized: true, | |
| 27517 token: classNameToken | |
| 27518 }); | |
| 27519 state.funct["(scope)"].block.use(className, classNameToken); | |
| 27520 } | |
| 27521 | |
| 27522 classBody(this, context); | |
| 27523 return this; | |
| 27524 }); | |
| 27525 | |
| 27526 function classBody(classToken, context) { | |
| 27527 var props = Object.create(null); | |
| 27528 var name, accessorType, token, isStatic, inGenerator, hasConstructor; | |
| 27529 | |
| 27530 /* istanbul ignore else */ | |
| 27531 if (state.tokens.next.value === "{") { | |
| 27532 advance("{"); | |
| 27533 } else { | |
| 27534 warning("W116", state.tokens.curr, "identifier", state.tokens.next.type); //? | |
| 27535 advance(); | |
| 27536 } | |
| 27537 | |
| 27538 while (state.tokens.next.value !== "}") { | |
| 27539 isStatic = false; | |
| 27540 inGenerator = false; | |
| 27541 context &= ~prodParams.preAsync; | |
| 27542 | |
| 27543 if (state.tokens.next.value === "static" && | |
| 27544 !checkPunctuator(peek(), "(")) { | |
| 27545 isStatic = true; | |
| 27546 advance(); | |
| 27547 } | |
| 27548 | |
| 27549 if (state.tokens.next.value === "async") { | |
| 27550 if (!checkPunctuator(peek(), "(")) { | |
| 27551 context |= prodParams.preAsync; | |
| 27552 advance(); | |
| 27553 | |
| 27554 nolinebreak(state.tokens.curr); | |
| 27555 | |
| 27556 if (checkPunctuator(state.tokens.next, "*")) { | |
| 27557 inGenerator = true; | |
| 27558 advance("*"); | |
| 27559 | |
| 27560 if (!state.inES9()) { | |
| 27561 warning("W119", state.tokens.next, "async generators", "9"); | |
| 27562 } | |
| 27563 } | |
| 27564 | |
| 27565 if (!state.inES8()) { | |
| 27566 warning("W119", state.tokens.curr, "async functions", "8"); | |
| 27567 } | |
| 27568 } | |
| 27569 } | |
| 27570 | |
| 27571 if (state.tokens.next.value === "*") { | |
| 27572 inGenerator = true; | |
| 27573 advance(); | |
| 27574 } | |
| 27575 | |
| 27576 token = state.tokens.next; | |
| 27577 | |
| 27578 if ((token.value === "set" || token.value === "get") && !checkPunctuator(peek(), "(")) { | |
| 27579 if (inGenerator) { | |
| 27580 /* istanbul ignore next */ | |
| 27581 error("E024", token, token.value); | |
| 27582 } | |
| 27583 accessorType = token.value; | |
| 27584 advance(); | |
| 27585 token = state.tokens.next; | |
| 27586 | |
| 27587 if (!isStatic && token.value === "constructor") { | |
| 27588 error("E049", token, "class " + accessorType + "ter method", token.value); | |
| 27589 } else if (isStatic && token.value === "prototype") { | |
| 27590 error("E049", token, "static class " + accessorType + "ter method", token.value); | |
| 27591 } | |
| 27592 } else { | |
| 27593 accessorType = null; | |
| 27594 } | |
| 27595 | |
| 27596 switch (token.value) { | |
| 27597 case ";": | |
| 27598 warning("W032", token); | |
| 27599 advance(); | |
| 27600 break; | |
| 27601 case "constructor": | |
| 27602 if (isStatic) { | |
| 27603 // treat like a regular method -- static methods can be called 'constructor' | |
| 27604 name = propertyName(context); | |
| 27605 saveProperty(props, name, token, true, isStatic); | |
| 27606 doMethod(classToken, context, name, inGenerator); | |
| 27607 } else { | |
| 27608 if (inGenerator || context & prodParams.preAsync) { | |
| 27609 error("E024", token, token.value); | |
| 27610 } else if (hasConstructor) { | |
| 27611 /* istanbul ignore next */ | |
| 27612 error("E024", token, token.value); | |
| 27613 } else { | |
| 27614 hasConstructor = !accessorType && !isStatic; | |
| 27615 } | |
| 27616 advance(); | |
| 27617 doMethod(classToken, context, state.nameStack.infer()); | |
| 27618 } | |
| 27619 break; | |
| 27620 case "[": | |
| 27621 name = computedPropertyName(context); | |
| 27622 doMethod(classToken, context, name, inGenerator); | |
| 27623 // We don't check names (via calling saveProperty()) of computed expressions like ["Symbol.iterator"]() | |
| 27624 break; | |
| 27625 default: | |
| 27626 name = propertyName(context); | |
| 27627 if (name === undefined) { | |
| 27628 error("E024", token, token.value); | |
| 27629 advance(); | |
| 27630 break; | |
| 27631 } | |
| 27632 | |
| 27633 if (accessorType) { | |
| 27634 saveAccessor(accessorType, props, name, token, true, isStatic); | |
| 27635 name = state.nameStack.infer(); | |
| 27636 } else { | |
| 27637 if (isStatic && name === "prototype") { | |
| 27638 error("E049", token, "static class method", name); | |
| 27639 } | |
| 27640 | |
| 27641 saveProperty(props, name, token, true, isStatic); | |
| 27642 } | |
| 27643 | |
| 27644 doMethod(classToken, context, name, inGenerator); | |
| 27645 break; | |
| 27646 } | |
| 27647 } | |
| 27648 advance("}"); | |
| 27649 checkProperties(props); | |
| 27650 | |
| 27651 state.inClassBody = false; | |
| 27652 state.funct["(scope)"].unstack(); | |
| 27653 } | |
| 27654 | |
| 27655 function doMethod(classToken, context, name, generator) { | |
| 27656 if (generator) { | |
| 27657 if (!state.inES6()) { | |
| 27658 warning("W119", state.tokens.curr, "function*", "6"); | |
| 27659 } | |
| 27660 } | |
| 27661 | |
| 27662 if (state.tokens.next.value !== "(") { | |
| 27663 error("E054", state.tokens.next, state.tokens.next.value); | |
| 27664 advance(); | |
| 27665 if (state.tokens.next.value === "{") { | |
| 27666 // manually cheating the test "invalidClasses", which asserts this particular behavior when a class is misdefined. | |
| 27667 advance(); | |
| 27668 if (state.tokens.next.value === "}") { | |
| 27669 warning("W116", state.tokens.next, "(", state.tokens.next.value); | |
| 27670 advance(); | |
| 27671 identifier(context); | |
| 27672 advance(); | |
| 27673 } | |
| 27674 /* istanbul ignore next */ | |
| 27675 return; | |
| 27676 } else { | |
| 27677 while (state.tokens.next.value !== "(") { | |
| 27678 advance(); | |
| 27679 } | |
| 27680 } | |
| 27681 } | |
| 27682 | |
| 27683 doFunction(context, { name: name, | |
| 27684 type: generator ? "generator" : null, | |
| 27685 isMethod: true, | |
| 27686 statement: classToken }); | |
| 27687 } | |
| 27688 | |
| 27689 prefix("void").exps = true; | |
| 27690 | |
| 27691 infix(".", function(context, left, that) { | |
| 27692 var m = identifier(context, true); | |
| 27693 | |
| 27694 if (typeof m === "string") { | |
| 27695 countMember(m); | |
| 27696 } | |
| 27697 | |
| 27698 that.left = left; | |
| 27699 that.right = m; | |
| 27700 | |
| 27701 if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") { | |
| 27702 warning("W001"); | |
| 27703 } | |
| 27704 | |
| 27705 if (left && left.value === "arguments" && (m === "callee" || m === "caller")) { | |
| 27706 if (state.option.noarg) | |
| 27707 warning("W059", left, m); | |
| 27708 else if (state.isStrict()) | |
| 27709 error("E008"); | |
| 27710 } else if (!state.option.evil && left && left.value === "document" && | |
| 27711 (m === "write" || m === "writeln")) { | |
| 27712 warning("W060", left); | |
| 27713 } | |
| 27714 | |
| 27715 if (!state.option.evil && (m === "eval" || m === "execScript")) { | |
| 27716 if (isGlobalEval(left, state)) { | |
| 27717 warning("W061"); | |
| 27718 } | |
| 27719 } | |
| 27720 | |
| 27721 return that; | |
| 27722 }, 160, true); | |
| 27723 | |
| 27724 infix("(", function(context, left, that) { | |
| 27725 if (state.option.immed && left && !left.immed && left.id === "function") { | |
| 27726 warning("W062"); | |
| 27727 } | |
| 27728 | |
| 27729 if (state.option.asi && checkPunctuators(state.tokens.prev, [")", "]"]) && | |
| 27730 !sameLine(state.tokens.prev, state.tokens.curr)) { | |
| 27731 warning("W014", state.tokens.curr, state.tokens.curr.id); | |
| 27732 } | |
| 27733 | |
| 27734 var n = 0; | |
| 27735 var p = []; | |
| 27736 | |
| 27737 if (left) { | |
| 27738 if (left.type === "(identifier)") { | |
| 27739 if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) { | |
| 27740 if ("Array Number String Boolean Date Object Error Symbol".indexOf(left.value) === -1) { | |
| 27741 if (left.value === "Math") { | |
| 27742 /* istanbul ignore next */ | |
| 27743 warning("W063", left); | |
| 27744 } else if (state.option.newcap) { | |
| 27745 warning("W064", left); | |
| 27746 } | |
| 27747 } | |
| 27748 } | |
| 27749 } | |
| 27750 } | |
| 27751 | |
| 27752 if (state.tokens.next.id !== ")") { | |
| 27753 for (;;) { | |
| 27754 spreadrest("spread"); | |
| 27755 | |
| 27756 p[p.length] = expression(context, 10); | |
| 27757 n += 1; | |
| 27758 if (state.tokens.next.id !== ",") { | |
| 27759 break; | |
| 27760 } | |
| 27761 advance(","); | |
| 27762 checkComma({ allowTrailing: true }); | |
| 27763 | |
| 27764 if (state.tokens.next.id === ")") { | |
| 27765 if (!state.inES8()) { | |
| 27766 warning("W119", state.tokens.curr, "Trailing comma in arguments lists", "8"); | |
| 27767 } | |
| 27768 | |
| 27769 break; | |
| 27770 } | |
| 27771 } | |
| 27772 } | |
| 27773 | |
| 27774 advance(")"); | |
| 27775 | |
| 27776 if (typeof left === "object") { | |
| 27777 if (!state.inES5() && left.value === "parseInt" && n === 1) { | |
| 27778 warning("W065", state.tokens.curr); | |
| 27779 } | |
| 27780 if (!state.option.evil) { | |
| 27781 if (left.value === "eval" || left.value === "Function" || | |
| 27782 left.value === "execScript") { | |
| 27783 warning("W061", left); | |
| 27784 | |
| 27785 // This conditional expression was initially implemented with a typo | |
| 27786 // which prevented the branch's execution in all cases. While | |
| 27787 // enabling the code will produce behavior that is consistent with | |
| 27788 // the other forms of code evaluation that follow, such a change is | |
| 27789 // also technically incompatable with prior versions of JSHint (due | |
| 27790 // to the fact that the behavior was never formally documented). This | |
| 27791 // branch should be enabled as part of a major release. | |
| 27792 //if (p[0] && p[0].id === "(string)") { | |
| 27793 // addEvalCode(left, p[0]); | |
| 27794 //} | |
| 27795 } else if (p[0] && p[0].id === "(string)" && | |
| 27796 (left.value === "setTimeout" || | |
| 27797 left.value === "setInterval")) { | |
| 27798 warning("W066", left); | |
| 27799 addEvalCode(left, p[0]); | |
| 27800 | |
| 27801 // window.setTimeout/setInterval | |
| 27802 } else if (p[0] && p[0].id === "(string)" && | |
| 27803 left.value === "." && | |
| 27804 left.left.value === "window" && | |
| 27805 (left.right === "setTimeout" || | |
| 27806 left.right === "setInterval")) { | |
| 27807 warning("W066", left); | |
| 27808 addEvalCode(left, p[0]); | |
| 27809 } | |
| 27810 } | |
| 27811 if (!left.identifier && left.id !== "." && left.id !== "[" && left.id !== "=>" && | |
| 27812 left.id !== "(" && left.id !== "&&" && left.id !== "||" && left.id !== "?" && | |
| 27813 left.id !== "async" && !(state.inES6() && left["(name)"])) { | |
| 27814 warning("W067", that); | |
| 27815 } | |
| 27816 } | |
| 27817 | |
| 27818 that.left = left; | |
| 27819 return that; | |
| 27820 }, 155, true).exps = true; | |
| 27821 | |
| 27822 function peekThroughParens(parens) { | |
| 27823 var pn = state.tokens.next; | |
| 27824 var i = -1; | |
| 27825 var pn1; | |
| 27826 | |
| 27827 do { | |
| 27828 if (pn.value === "(") { | |
| 27829 parens += 1; | |
| 27830 } else if (pn.value === ")") { | |
| 27831 parens -= 1; | |
| 27832 } | |
| 27833 | |
| 27834 i += 1; | |
| 27835 pn1 = pn; | |
| 27836 pn = peek(i); | |
| 27837 } while (!(parens === 0 && pn1.value === ")") && pn.type !== "(end)"); | |
| 27838 | |
| 27839 return pn; | |
| 27840 } | |
| 27841 | |
| 27842 prefix("(", function(context, rbp) { | |
| 27843 var ret, triggerFnExpr, first, last; | |
| 27844 var opening = state.tokens.curr; | |
| 27845 var preceeding = state.tokens.prev; | |
| 27846 var isNecessary = !state.option.singleGroups; | |
| 27847 var pn = peekThroughParens(1); | |
| 27848 | |
| 27849 if (state.tokens.next.id === "function") { | |
| 27850 triggerFnExpr = state.tokens.next.immed = true; | |
| 27851 } | |
| 27852 | |
| 27853 // If the balanced grouping operator is followed by a "fat arrow", the | |
| 27854 // current token marks the beginning of a "fat arrow" function and parsing | |
| 27855 // should proceed accordingly. | |
| 27856 if (pn.value === "=>") { | |
| 27857 pn.funct = doFunction(context, { type: "arrow", parsedOpening: true }); | |
| 27858 return pn; | |
| 27859 } | |
| 27860 | |
| 27861 // The ECMA262 grammar requires an expression between the "opening | |
| 27862 // parenthesis" and "close parenthesis" tokens of the grouping operator. | |
| 27863 // However, the "ignore" directive is commonly used to inject values that | |
| 27864 // are not included in the token stream. For example: | |
| 27865 // | |
| 27866 // return ( | |
| 27867 // /*jshint ignore:start */ | |
| 27868 // <div></div> | |
| 27869 // /*jshint ignore:end */ | |
| 27870 // ); | |
| 27871 // | |
| 27872 // The "empty" grouping operator is permitted in order to tolerate this | |
| 27873 // pattern. | |
| 27874 if (state.tokens.next.id === ")") { | |
| 27875 advance(")"); | |
| 27876 return; | |
| 27877 } | |
| 27878 | |
| 27879 ret = expression(context, 0); | |
| 27880 | |
| 27881 advance(")", this); | |
| 27882 | |
| 27883 if (!ret) { | |
| 27884 return; | |
| 27885 } | |
| 27886 | |
| 27887 ret.paren = true; | |
| 27888 | |
| 27889 if (state.option.immed && ret && ret.id === "function") { | |
| 27890 if (state.tokens.next.id !== "(" && | |
| 27891 state.tokens.next.id !== "." && state.tokens.next.id !== "[") { | |
| 27892 warning("W068", this); | |
| 27893 } | |
| 27894 } | |
| 27895 | |
| 27896 if (ret.id === ",") { | |
| 27897 first = ret.left; | |
| 27898 while (first.id === ",") { | |
| 27899 first = first.left; | |
| 27900 } | |
| 27901 | |
| 27902 last = ret.right; | |
| 27903 } else { | |
| 27904 first = last = ret; | |
| 27905 | |
| 27906 if (!isNecessary) { | |
| 27907 // async functions are identified after parsing due to the complexity | |
| 27908 // of disambiguating the `async` keyword. | |
| 27909 if (!triggerFnExpr) { | |
| 27910 triggerFnExpr = ret.id === "async"; | |
| 27911 } | |
| 27912 | |
| 27913 isNecessary = | |
| 27914 // Used to distinguish from an ExpressionStatement which may not | |
| 27915 // begin with the `{` and `function` tokens | |
| 27916 (opening.beginsStmt && (ret.id === "{" || triggerFnExpr)) || | |
| 27917 // Used to signal that a function expression is being supplied to | |
| 27918 // some other operator. | |
| 27919 (triggerFnExpr && | |
| 27920 // For parenthesis wrapping a function expression to be considered | |
| 27921 // necessary, the grouping operator should be the left-hand-side of | |
| 27922 // some other operator--either within the parenthesis or directly | |
| 27923 // following them. | |
| 27924 (!isEndOfExpr() || state.tokens.prev.id !== "}")) || | |
| 27925 // Used to demarcate an arrow function as the left-hand side of some | |
| 27926 // operator. | |
| 27927 (ret.id === "=>" && !isEndOfExpr()) || | |
| 27928 // Used as the return value of a single-statement arrow function | |
| 27929 (ret.id === "{" && preceeding.id === "=>") || | |
| 27930 // Used to cover a unary expression as the left-hand side of the | |
| 27931 // exponentiation operator | |
| 27932 (beginsUnaryExpression(ret) && state.tokens.next.id === "**") || | |
| 27933 // Used to delineate an integer number literal from a dereferencing | |
| 27934 // punctuator (otherwise interpreted as a decimal point) | |
| 27935 (ret.type === "(number)" && | |
| 27936 checkPunctuator(pn, ".") && /^\d+$/.test(ret.value)) || | |
| 27937 // Used to wrap object destructuring assignment | |
| 27938 (opening.beginsStmt && ret.id === "=" && ret.left.id === "{"); | |
| 27939 } | |
| 27940 } | |
| 27941 | |
| 27942 // The operator may be necessary to override the default binding power of | |
| 27943 // neighboring operators (whenever there is an operator in use within the | |
| 27944 // first expression *or* the current group contains multiple expressions) | |
| 27945 if (!isNecessary && (isOperator(first) || first !== last)) { | |
| 27946 isNecessary = | |
| 27947 (rbp > first.lbp) || | |
| 27948 (rbp > 0 && rbp === first.lbp) || | |
| 27949 (!isEndOfExpr() && last.rbp < state.tokens.next.lbp); | |
| 27950 } | |
| 27951 | |
| 27952 if (!isNecessary) { | |
| 27953 warning("W126", opening); | |
| 27954 } | |
| 27955 | |
| 27956 return ret; | |
| 27957 }); | |
| 27958 | |
| 27959 application("=>"); | |
| 27960 | |
| 27961 infix("[", function(context, left, that) { | |
| 27962 var e, s, canUseDot; | |
| 27963 | |
| 27964 if (state.option.asi && checkPunctuators(state.tokens.prev, [")", "]"]) && | |
| 27965 !sameLine(state.tokens.prev, state.tokens.curr)) { | |
| 27966 warning("W014", state.tokens.curr, state.tokens.curr.id); | |
| 27967 } | |
| 27968 | |
| 27969 e = expression(context & ~prodParams.noin, 10); | |
| 27970 | |
| 27971 if (e && e.type === "(string)") { | |
| 27972 if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) { | |
| 27973 if (isGlobalEval(left, state)) { | |
| 27974 warning("W061"); | |
| 27975 } | |
| 27976 } | |
| 27977 | |
| 27978 countMember(e.value); | |
| 27979 if (!state.option.sub && reg.identifier.test(e.value)) { | |
| 27980 s = state.syntax[e.value]; | |
| 27981 | |
| 27982 if (s) { | |
| 27983 canUseDot = !isReserved(context, s); | |
| 27984 } else { | |
| 27985 // This branch exists to preserve legacy behavior with version 2.9.5 | |
| 27986 // and earlier. In those releases, `eval` and `arguments` were | |
| 27987 // incorrectly interpreted as reserved keywords, so Member | |
| 27988 // Expressions such as `object["eval"]` did not trigger warning W069. | |
| 27989 // | |
| 27990 // TODO: Remove in JSHint 3 | |
| 27991 canUseDot = e.value !== "eval" && e.value !== "arguments"; | |
| 27992 } | |
| 27993 | |
| 27994 if (canUseDot) { | |
| 27995 warning("W069", state.tokens.prev, e.value); | |
| 27996 } | |
| 27997 } | |
| 27998 } | |
| 27999 advance("]", that); | |
| 28000 | |
| 28001 if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") { | |
| 28002 warning("W001"); | |
| 28003 } | |
| 28004 | |
| 28005 that.left = left; | |
| 28006 that.right = e; | |
| 28007 return that; | |
| 28008 }, 160, true); | |
| 28009 | |
| 28010 function comprehensiveArrayExpression(context) { | |
| 28011 var res = {}; | |
| 28012 res.exps = true; | |
| 28013 state.funct["(comparray)"].stack(); | |
| 28014 | |
| 28015 // Handle reversed for expressions, used in spidermonkey | |
| 28016 var reversed = false; | |
| 28017 if (state.tokens.next.value !== "for") { | |
| 28018 reversed = true; | |
| 28019 if (!state.inMoz()) { | |
| 28020 warning("W116", state.tokens.next, "for", state.tokens.next.value); | |
| 28021 } | |
| 28022 state.funct["(comparray)"].setState("use"); | |
| 28023 res.right = expression(context, 10); | |
| 28024 } | |
| 28025 | |
| 28026 advance("for"); | |
| 28027 if (state.tokens.next.value === "each") { | |
| 28028 advance("each"); | |
| 28029 if (!state.inMoz()) { | |
| 28030 warning("W118", state.tokens.curr, "for each"); | |
| 28031 } | |
| 28032 } | |
| 28033 advance("("); | |
| 28034 state.funct["(comparray)"].setState("define"); | |
| 28035 res.left = expression(context, 130); | |
| 28036 if (_.includes(["in", "of"], state.tokens.next.value)) { | |
| 28037 advance(); | |
| 28038 } else { | |
| 28039 /* istanbul ignore next */ | |
| 28040 error("E045", state.tokens.curr); | |
| 28041 } | |
| 28042 state.funct["(comparray)"].setState("generate"); | |
| 28043 expression(context, 10); | |
| 28044 | |
| 28045 advance(")"); | |
| 28046 if (state.tokens.next.value === "if") { | |
| 28047 advance("if"); | |
| 28048 advance("("); | |
| 28049 state.funct["(comparray)"].setState("filter"); | |
| 28050 expression(context, 10); | |
| 28051 advance(")"); | |
| 28052 } | |
| 28053 | |
| 28054 if (!reversed) { | |
| 28055 state.funct["(comparray)"].setState("use"); | |
| 28056 res.right = expression(context, 10); | |
| 28057 } | |
| 28058 | |
| 28059 advance("]"); | |
| 28060 state.funct["(comparray)"].unstack(); | |
| 28061 return res; | |
| 28062 } | |
| 28063 | |
| 28064 prefix("[", function(context) { | |
| 28065 var blocktype = lookupBlockType(); | |
| 28066 if (blocktype.isCompArray) { | |
| 28067 if (!state.option.esnext && !state.inMoz()) { | |
| 28068 warning("W118", state.tokens.curr, "array comprehension"); | |
| 28069 } | |
| 28070 return comprehensiveArrayExpression(context); | |
| 28071 } else if (blocktype.isDestAssign) { | |
| 28072 this.destructAssign = destructuringPattern(context, { | |
| 28073 openingParsed: true, | |
| 28074 assignment: true | |
| 28075 }); | |
| 28076 return this; | |
| 28077 } | |
| 28078 var b = !sameLine(state.tokens.curr, state.tokens.next); | |
| 28079 this.first = []; | |
| 28080 if (b) { | |
| 28081 indent += state.option.indent; | |
| 28082 if (state.tokens.next.from === indent + state.option.indent) { | |
| 28083 /* istanbul ignore next */ | |
| 28084 indent += state.option.indent; | |
| 28085 } | |
| 28086 } | |
| 28087 while (state.tokens.next.id !== "(end)") { | |
| 28088 while (state.tokens.next.id === ",") { | |
| 28089 if (!state.option.elision) { | |
| 28090 if (!state.inES5()) { | |
| 28091 // Maintain compat with old options --- ES5 mode without | |
| 28092 // elision=true will warn once per comma | |
| 28093 warning("W070"); | |
| 28094 } else { | |
| 28095 warning("W128"); | |
| 28096 do { | |
| 28097 advance(","); | |
| 28098 } while (state.tokens.next.id === ","); | |
| 28099 continue; | |
| 28100 } | |
| 28101 } | |
| 28102 advance(","); | |
| 28103 } | |
| 28104 | |
| 28105 if (state.tokens.next.id === "]") { | |
| 28106 break; | |
| 28107 } | |
| 28108 | |
| 28109 spreadrest("spread"); | |
| 28110 | |
| 28111 this.first.push(expression(context, 10)); | |
| 28112 if (state.tokens.next.id === ",") { | |
| 28113 advance(","); | |
| 28114 checkComma({ allowTrailing: true }); | |
| 28115 if (state.tokens.next.id === "]" && !state.inES5()) { | |
| 28116 warning("W070", state.tokens.curr); | |
| 28117 break; | |
| 28118 } | |
| 28119 } else { | |
| 28120 if (state.option.trailingcomma && state.inES5()) { | |
| 28121 warningAt("W140", state.tokens.curr.line, state.tokens.curr.character); | |
| 28122 } | |
| 28123 break; | |
| 28124 } | |
| 28125 } | |
| 28126 if (b) { | |
| 28127 indent -= state.option.indent; | |
| 28128 } | |
| 28129 advance("]", this); | |
| 28130 return this; | |
| 28131 }); | |
| 28132 | |
| 28133 | |
| 28134 function isMethod() { | |
| 28135 return !!state.funct["(method)"]; | |
| 28136 } | |
| 28137 | |
| 28138 function propertyName(context, preserveOrToken) { | |
| 28139 var id; | |
| 28140 var preserve = true; | |
| 28141 if (typeof preserveOrToken === "object") { | |
| 28142 /* istanbul ignore next */ | |
| 28143 id = preserveOrToken; | |
| 28144 } else { | |
| 28145 preserve = preserveOrToken; | |
| 28146 id = optionalidentifier(context, true, preserve); | |
| 28147 } | |
| 28148 | |
| 28149 if (!id) { | |
| 28150 if (state.tokens.next.id === "(string)") { | |
| 28151 id = state.tokens.next.value; | |
| 28152 if (!preserve) { | |
| 28153 advance(); | |
| 28154 } | |
| 28155 } else if (state.tokens.next.id === "(number)") { | |
| 28156 id = state.tokens.next.value.toString(); | |
| 28157 if (!preserve) { | |
| 28158 advance(); | |
| 28159 } | |
| 28160 } | |
| 28161 /* istanbul ignore next */ | |
| 28162 } else if (typeof id === "object") { | |
| 28163 if (id.id === "(string)" || id.id === "(identifier)") id = id.value; | |
| 28164 else if (id.id === "(number)") id = id.value.toString(); | |
| 28165 } | |
| 28166 | |
| 28167 if (id === "hasOwnProperty") { | |
| 28168 warning("W001"); | |
| 28169 } | |
| 28170 | |
| 28171 return id; | |
| 28172 } | |
| 28173 | |
| 28174 /** | |
| 28175 * @param {Number} context The parsing context | |
| 28176 * @param {Object} [options] | |
| 28177 * @param {token} [options.loneArg] The argument to the function in cases | |
| 28178 * where it was defined using the | |
| 28179 * single-argument shorthand. | |
| 28180 * @param {bool} [options.parsedOpening] Whether the opening parenthesis has | |
| 28181 * already been parsed. | |
| 28182 * | |
| 28183 * @returns {{ arity: number, params: Array.<string>, isSimple: boolean }} | |
| 28184 */ | |
| 28185 function functionparams(context, options) { | |
| 28186 var next; | |
| 28187 var paramsIds = []; | |
| 28188 var ident; | |
| 28189 var tokens = []; | |
| 28190 var t; | |
| 28191 var pastDefault = false; | |
| 28192 var pastRest = false; | |
| 28193 var arity = 0; | |
| 28194 var loneArg = options && options.loneArg; | |
| 28195 var hasDestructuring = false; | |
| 28196 | |
| 28197 if (loneArg && loneArg.identifier === true) { | |
| 28198 state.funct["(scope)"].addParam(loneArg.value, loneArg); | |
| 28199 return { arity: 1, params: [ loneArg.value ], isSimple: true }; | |
| 28200 } | |
| 28201 | |
| 28202 next = state.tokens.next; | |
| 28203 | |
| 28204 if (!options || !options.parsedOpening) { | |
| 28205 advance("("); | |
| 28206 } | |
| 28207 | |
| 28208 if (state.tokens.next.id === ")") { | |
| 28209 advance(")"); | |
| 28210 return; | |
| 28211 } | |
| 28212 | |
| 28213 function addParam(addParamArgs) { | |
| 28214 state.funct["(scope)"].addParam.apply(state.funct["(scope)"], addParamArgs); | |
| 28215 } | |
| 28216 | |
| 28217 for (;;) { | |
| 28218 arity++; | |
| 28219 // are added to the param scope | |
| 28220 var currentParams = []; | |
| 28221 | |
| 28222 pastRest = spreadrest("rest"); | |
| 28223 | |
| 28224 if (_.includes(["{", "["], state.tokens.next.id)) { | |
| 28225 hasDestructuring = true; | |
| 28226 tokens = destructuringPattern(context); | |
| 28227 for (t in tokens) { | |
| 28228 t = tokens[t]; | |
| 28229 if (t.id) { | |
| 28230 paramsIds.push(t.id); | |
| 28231 currentParams.push([t.id, t.token]); | |
| 28232 } | |
| 28233 } | |
| 28234 } else { | |
| 28235 ident = identifier(context); | |
| 28236 | |
| 28237 if (ident) { | |
| 28238 paramsIds.push(ident); | |
| 28239 currentParams.push([ident, state.tokens.curr]); | |
| 28240 } else { | |
| 28241 // Skip invalid parameter. | |
| 28242 while (!checkPunctuators(state.tokens.next, [",", ")"])) advance(); | |
| 28243 } | |
| 28244 } | |
| 28245 | |
| 28246 // It is valid to have a regular argument after a default argument | |
| 28247 // since undefined can be used for missing parameters. Still warn as it is | |
| 28248 // a possible code smell. | |
| 28249 if (pastDefault) { | |
| 28250 if (state.tokens.next.id !== "=") { | |
| 28251 error("W138", state.tokens.curr); | |
| 28252 } | |
| 28253 } | |
| 28254 if (state.tokens.next.id === "=") { | |
| 28255 if (!state.inES6()) { | |
| 28256 warning("W119", state.tokens.next, "default parameters", "6"); | |
| 28257 } | |
| 28258 | |
| 28259 if (pastRest) { | |
| 28260 error("E062", state.tokens.next); | |
| 28261 } | |
| 28262 | |
| 28263 advance("="); | |
| 28264 pastDefault = true; | |
| 28265 expression(context, 10); | |
| 28266 } | |
| 28267 | |
| 28268 // now we have evaluated the default expression, add the variable to the param scope | |
| 28269 currentParams.forEach(addParam); | |
| 28270 if (state.tokens.next.id === ",") { | |
| 28271 if (pastRest) { | |
| 28272 warning("W131", state.tokens.next); | |
| 28273 } | |
| 28274 advance(","); | |
| 28275 checkComma({ allowTrailing: true }); | |
| 28276 } | |
| 28277 | |
| 28278 if (state.tokens.next.id === ")") { | |
| 28279 if (state.tokens.curr.id === "," && !state.inES8()) { | |
| 28280 warning("W119", state.tokens.curr, "Trailing comma in function parameters", "8"); | |
| 28281 } | |
| 28282 | |
| 28283 advance(")", next); | |
| 28284 return { | |
| 28285 arity: arity, | |
| 28286 params: paramsIds, | |
| 28287 isSimple: !hasDestructuring && !pastRest && !pastDefault | |
| 28288 }; | |
| 28289 } | |
| 28290 } | |
| 28291 } | |
| 28292 | |
| 28293 /** | |
| 28294 * Factory function for creating objects used to track statistics of function | |
| 28295 * literals. | |
| 28296 * | |
| 28297 * @param {string} name - the identifier name to associate with the function | |
| 28298 * @param {object} [token] - token responsible for creating the function | |
| 28299 * object | |
| 28300 * @param {object} [overwrites] - a collection of properties that should | |
| 28301 * override the corresponding default value of | |
| 28302 * the new "functor" object | |
| 28303 */ | |
| 28304 function functor(name, token, overwrites) { | |
| 28305 var funct = { | |
| 28306 "(name)" : name, | |
| 28307 "(breakage)" : 0, | |
| 28308 "(loopage)" : 0, | |
| 28309 // The strictness of the function body is tracked via a dedicated | |
| 28310 // property (as opposed to via the global `state` object) so that the | |
| 28311 // value can be referenced after the body has been fully parsed (i.e. | |
| 28312 // when validating the identifier used in function declarations and | |
| 28313 // function expressions). | |
| 28314 "(isStrict)" : "unknown", | |
| 28315 | |
| 28316 "(global)" : false, | |
| 28317 | |
| 28318 "(line)" : null, | |
| 28319 "(character)" : null, | |
| 28320 "(metrics)" : null, | |
| 28321 "(statement)" : null, | |
| 28322 "(context)" : null, | |
| 28323 "(scope)" : null, | |
| 28324 "(comparray)" : null, | |
| 28325 "(yielded)" : null, | |
| 28326 "(arrow)" : null, | |
| 28327 "(async)" : null, | |
| 28328 "(params)" : null | |
| 28329 }; | |
| 28330 | |
| 28331 if (token) { | |
| 28332 _.extend(funct, { | |
| 28333 "(line)" : token.line, | |
| 28334 "(character)": token.character, | |
| 28335 "(metrics)" : createMetrics(token) | |
| 28336 }); | |
| 28337 } | |
| 28338 | |
| 28339 _.extend(funct, overwrites); | |
| 28340 | |
| 28341 if (funct["(context)"]) { | |
| 28342 funct["(scope)"] = funct["(context)"]["(scope)"]; | |
| 28343 funct["(comparray)"] = funct["(context)"]["(comparray)"]; | |
| 28344 } | |
| 28345 | |
| 28346 return funct; | |
| 28347 } | |
| 28348 | |
| 28349 /** | |
| 28350 * Determine if the parser has begun parsing executable code. | |
| 28351 * | |
| 28352 * @param {Token} funct - The current "functor" token | |
| 28353 * | |
| 28354 * @returns {boolean} | |
| 28355 */ | |
| 28356 function hasParsedCode(funct) { | |
| 28357 return funct["(global)"] && !funct["(verb)"]; | |
| 28358 } | |
| 28359 | |
| 28360 /** | |
| 28361 * This function is used as both a null-denotation method *and* a | |
| 28362 * left-denotation method, meaning the first parameter is overloaded. | |
| 28363 */ | |
| 28364 function doTemplateLiteral(context, leftOrRbp) { | |
| 28365 // ASSERT: this.type === "(template)" | |
| 28366 // jshint validthis: true | |
| 28367 var ctx = this.context; | |
| 28368 var noSubst = this.noSubst; | |
| 28369 var depth = this.depth; | |
| 28370 var left = typeof leftOrRbp === "number" ? null : leftOrRbp; | |
| 28371 | |
| 28372 if (!noSubst) { | |
| 28373 while (!end()) { | |
| 28374 if (!state.tokens.next.template || state.tokens.next.depth > depth) { | |
| 28375 expression(context, 0); // should probably have different rbp? | |
| 28376 } else { | |
| 28377 // skip template start / middle | |
| 28378 advance(); | |
| 28379 } | |
| 28380 } | |
| 28381 } | |
| 28382 | |
| 28383 return { | |
| 28384 id: "(template)", | |
| 28385 type: "(template)", | |
| 28386 tag: left | |
| 28387 }; | |
| 28388 | |
| 28389 function end() { | |
| 28390 if (state.tokens.curr.template && state.tokens.curr.tail && | |
| 28391 state.tokens.curr.context === ctx) { | |
| 28392 /* istanbul ignore next */ | |
| 28393 return true; | |
| 28394 } | |
| 28395 var complete = (state.tokens.next.template && state.tokens.next.tail && | |
| 28396 state.tokens.next.context === ctx); | |
| 28397 if (complete) advance(); | |
| 28398 return complete || state.tokens.next.isUnclosed; | |
| 28399 } | |
| 28400 } | |
| 28401 | |
| 28402 /** | |
| 28403 * Parse a function literal. | |
| 28404 * | |
| 28405 * @param {Number} context The parsing context | |
| 28406 * @param {Object} [options] | |
| 28407 * @param {string} [options.name] The identifier belonging to the function (if | |
| 28408 * any) | |
| 28409 * @param {token} [options.statement] The statement that triggered creation | |
| 28410 * of the current function. | |
| 28411 * @param {string} [options.type] If specified, either "generator" or "arrow" | |
| 28412 * @param {token} [options.loneArg] The argument to the function in cases | |
| 28413 * where it was defined using the | |
| 28414 * single-argument shorthand | |
| 28415 * @param {bool} [options.parsedOpening] Whether the opening parenthesis has | |
| 28416 * already been parsed | |
| 28417 * @param {string} [options.classExprBinding] Define a function with this | |
| 28418 * identifier in the new function's | |
| 28419 * scope, mimicking the bahavior of | |
| 28420 * class expression names within | |
| 28421 * the body of member functions. | |
| 28422 */ | |
| 28423 function doFunction(context, options) { | |
| 28424 var f, token, name, statement, classExprBinding, isGenerator, isArrow, | |
| 28425 isMethod, ignoreLoopFunc; | |
| 28426 var oldOption = state.option; | |
| 28427 var oldIgnored = state.ignored; | |
| 28428 var isAsync = context & prodParams.preAsync; | |
| 28429 | |
| 28430 if (options) { | |
| 28431 name = options.name; | |
| 28432 statement = options.statement; | |
| 28433 classExprBinding = options.classExprBinding; | |
| 28434 isGenerator = options.type === "generator"; | |
| 28435 isArrow = options.type === "arrow"; | |
| 28436 isMethod = options.isMethod; | |
| 28437 ignoreLoopFunc = options.ignoreLoopFunc; | |
| 28438 } | |
| 28439 | |
| 28440 context &= ~prodParams.noin; | |
| 28441 context &= ~prodParams.tryClause; | |
| 28442 | |
| 28443 if (isAsync) { | |
| 28444 context |= prodParams.async; | |
| 28445 } else { | |
| 28446 context &= ~prodParams.async; | |
| 28447 } | |
| 28448 | |
| 28449 if (isGenerator) { | |
| 28450 context |= prodParams.yield; | |
| 28451 } else if (!isArrow) { | |
| 28452 context &= ~prodParams.yield; | |
| 28453 } | |
| 28454 context &= ~prodParams.preAsync; | |
| 28455 | |
| 28456 state.option = Object.create(state.option); | |
| 28457 state.ignored = Object.create(state.ignored); | |
| 28458 | |
| 28459 state.funct = functor(name || state.nameStack.infer(), state.tokens.next, { | |
| 28460 "(statement)": statement, | |
| 28461 "(context)": state.funct, | |
| 28462 "(arrow)": isArrow, | |
| 28463 "(method)": isMethod, | |
| 28464 "(async)": isAsync | |
| 28465 }); | |
| 28466 | |
| 28467 f = state.funct; | |
| 28468 token = state.tokens.curr; | |
| 28469 | |
| 28470 functions.push(state.funct); | |
| 28471 | |
| 28472 // So that the function is available to itself and referencing itself is not | |
| 28473 // seen as a closure, add the function name to a new scope, but do not | |
| 28474 // test for unused (unused: false) | |
| 28475 // it is a new block scope so that params can override it, it can be block scoped | |
| 28476 // but declarations inside the function don't cause already declared error | |
| 28477 state.funct["(scope)"].stack("functionouter"); | |
| 28478 var internallyAccessibleName = !isMethod && (name || classExprBinding); | |
| 28479 if (internallyAccessibleName) { | |
| 28480 state.funct["(scope)"].block.add(internallyAccessibleName, | |
| 28481 classExprBinding ? "class" : "function", state.tokens.curr, false); | |
| 28482 } | |
| 28483 | |
| 28484 if (!isArrow) { | |
| 28485 state.funct["(scope)"].funct.add("arguments", "var", token, false); | |
| 28486 } | |
| 28487 | |
| 28488 // create the param scope (params added in functionparams) | |
| 28489 state.funct["(scope)"].stack("functionparams"); | |
| 28490 | |
| 28491 var paramsInfo = functionparams(context, options); | |
| 28492 | |
| 28493 if (paramsInfo) { | |
| 28494 state.funct["(params)"] = paramsInfo.params; | |
| 28495 state.funct["(hasSimpleParams)"] = paramsInfo.isSimple; | |
| 28496 state.funct["(metrics)"].arity = paramsInfo.arity; | |
| 28497 state.funct["(metrics)"].verifyMaxParametersPerFunction(); | |
| 28498 } else { | |
| 28499 state.funct["(params)"] = []; | |
| 28500 state.funct["(metrics)"].arity = 0; | |
| 28501 state.funct["(hasSimpleParams)"] = true; | |
| 28502 } | |
| 28503 | |
| 28504 if (isArrow) { | |
| 28505 context &= ~prodParams.yield; | |
| 28506 | |
| 28507 if (!state.inES6(true)) { | |
| 28508 warning("W119", state.tokens.curr, "arrow function syntax (=>)", "6"); | |
| 28509 } | |
| 28510 | |
| 28511 if (!options.loneArg) { | |
| 28512 advance("=>"); | |
| 28513 } | |
| 28514 } | |
| 28515 | |
| 28516 block(context, false, true, true, isArrow); | |
| 28517 | |
| 28518 if (!state.option.noyield && isGenerator && !state.funct["(yielded)"]) { | |
| 28519 warning("W124", state.tokens.curr); | |
| 28520 } | |
| 28521 | |
| 28522 state.funct["(metrics)"].verifyMaxStatementsPerFunction(); | |
| 28523 state.funct["(metrics)"].verifyMaxComplexityPerFunction(); | |
| 28524 state.funct["(unusedOption)"] = state.option.unused; | |
| 28525 state.option = oldOption; | |
| 28526 state.ignored = oldIgnored; | |
| 28527 state.funct["(last)"] = state.tokens.curr.line; | |
| 28528 state.funct["(lastcharacter)"] = state.tokens.curr.character; | |
| 28529 | |
| 28530 // unstack the params scope | |
| 28531 state.funct["(scope)"].unstack(); // also does usage and label checks | |
| 28532 | |
| 28533 // unstack the function outer stack | |
| 28534 state.funct["(scope)"].unstack(); | |
| 28535 | |
| 28536 state.funct = state.funct["(context)"]; | |
| 28537 | |
| 28538 if (!ignoreLoopFunc && !state.option.loopfunc && state.funct["(loopage)"]) { | |
| 28539 // If the function we just parsed accesses any non-local variables | |
| 28540 // trigger a warning. Otherwise, the function is safe even within | |
| 28541 // a loop. | |
| 28542 if (f["(outerMutables)"]) { | |
| 28543 warning("W083", token, f["(outerMutables)"].join(", ")); | |
| 28544 } | |
| 28545 } | |
| 28546 | |
| 28547 return f; | |
| 28548 } | |
| 28549 | |
| 28550 function createMetrics(functionStartToken) { | |
| 28551 return { | |
| 28552 statementCount: 0, | |
| 28553 nestedBlockDepth: -1, | |
| 28554 ComplexityCount: 1, | |
| 28555 arity: 0, | |
| 28556 | |
| 28557 verifyMaxStatementsPerFunction: function() { | |
| 28558 if (state.option.maxstatements && | |
| 28559 this.statementCount > state.option.maxstatements) { | |
| 28560 warning("W071", functionStartToken, this.statementCount); | |
| 28561 } | |
| 28562 }, | |
| 28563 | |
| 28564 verifyMaxParametersPerFunction: function() { | |
| 28565 if (_.isNumber(state.option.maxparams) && | |
| 28566 this.arity > state.option.maxparams) { | |
| 28567 warning("W072", functionStartToken, this.arity); | |
| 28568 } | |
| 28569 }, | |
| 28570 | |
| 28571 verifyMaxNestedBlockDepthPerFunction: function() { | |
| 28572 if (state.option.maxdepth && | |
| 28573 this.nestedBlockDepth > 0 && | |
| 28574 this.nestedBlockDepth === state.option.maxdepth + 1) { | |
| 28575 warning("W073", null, this.nestedBlockDepth); | |
| 28576 } | |
| 28577 }, | |
| 28578 | |
| 28579 verifyMaxComplexityPerFunction: function() { | |
| 28580 var max = state.option.maxcomplexity; | |
| 28581 var cc = this.ComplexityCount; | |
| 28582 if (max && cc > max) { | |
| 28583 warning("W074", functionStartToken, cc); | |
| 28584 } | |
| 28585 } | |
| 28586 }; | |
| 28587 } | |
| 28588 | |
| 28589 function increaseComplexityCount() { | |
| 28590 state.funct["(metrics)"].ComplexityCount += 1; | |
| 28591 } | |
| 28592 | |
| 28593 // Parse assignments that were found instead of conditionals. | |
| 28594 // For example: if (a = 1) { ... } | |
| 28595 | |
| 28596 function checkCondAssignment(token) { | |
| 28597 if (!token || token.paren) { | |
| 28598 return; | |
| 28599 } | |
| 28600 | |
| 28601 if (token.id === ",") { | |
| 28602 checkCondAssignment(token.right); | |
| 28603 return; | |
| 28604 } | |
| 28605 | |
| 28606 switch (token.id) { | |
| 28607 case "=": | |
| 28608 case "+=": | |
| 28609 case "-=": | |
| 28610 case "*=": | |
| 28611 case "%=": | |
| 28612 case "&=": | |
| 28613 case "|=": | |
| 28614 case "^=": | |
| 28615 case "/=": | |
| 28616 if (!state.option.boss) { | |
| 28617 warning("W084", token); | |
| 28618 } | |
| 28619 } | |
| 28620 } | |
| 28621 | |
| 28622 /** | |
| 28623 * Validate the properties defined within an object literal or class body. | |
| 28624 * See the `saveAccessor` and `saveProperty` functions for more detail. | |
| 28625 * | |
| 28626 * @param {object} props - Collection of objects describing the properties | |
| 28627 * encountered | |
| 28628 */ | |
| 28629 function checkProperties(props) { | |
| 28630 // Check for lonely setters if in the ES5 mode. | |
| 28631 if (state.inES5()) { | |
| 28632 for (var name in props) { | |
| 28633 if (props[name] && props[name].setterToken && !props[name].getterToken && | |
| 28634 !props[name].static) { | |
| 28635 warning("W078", props[name].setterToken); | |
| 28636 } | |
| 28637 } | |
| 28638 } | |
| 28639 } | |
| 28640 | |
| 28641 function metaProperty(context, name, c) { | |
| 28642 if (checkPunctuator(state.tokens.next, ".")) { | |
| 28643 var left = state.tokens.curr.id; | |
| 28644 advance("."); | |
| 28645 var id = identifier(context); | |
| 28646 state.tokens.curr.isMetaProperty = true; | |
| 28647 if (name !== id) { | |
| 28648 error("E057", state.tokens.prev, left, id); | |
| 28649 } else { | |
| 28650 c(); | |
| 28651 } | |
| 28652 return state.tokens.curr; | |
| 28653 } | |
| 28654 } | |
| 28655 | |
| 28656 //object literals | |
| 28657 (function(x) { | |
| 28658 x.nud = function(context) { | |
| 28659 var b, f, i, params, t, isGeneratorMethod = false, nextVal; | |
| 28660 var props = Object.create(null); // All properties, including accessors | |
| 28661 var isAsyncMethod = false; | |
| 28662 | |
| 28663 b = !sameLine(state.tokens.curr, state.tokens.next); | |
| 28664 if (b) { | |
| 28665 indent += state.option.indent; | |
| 28666 if (state.tokens.next.from === indent + state.option.indent) { | |
| 28667 /* istanbul ignore next */ | |
| 28668 indent += state.option.indent; | |
| 28669 } | |
| 28670 } | |
| 28671 | |
| 28672 var blocktype = lookupBlockType(); | |
| 28673 if (blocktype.isDestAssign) { | |
| 28674 this.destructAssign = destructuringPattern(context, { | |
| 28675 openingParsed: true, | |
| 28676 assignment: true | |
| 28677 }); | |
| 28678 return this; | |
| 28679 } | |
| 28680 state.inObjectBody = true; | |
| 28681 for (;;) { | |
| 28682 if (state.tokens.next.id === "}") { | |
| 28683 break; | |
| 28684 } | |
| 28685 | |
| 28686 nextVal = state.tokens.next.value; | |
| 28687 if (state.tokens.next.identifier && | |
| 28688 (peekIgnoreEOL().id === "," || peekIgnoreEOL().id === "}")) { | |
| 28689 if (!state.inES6()) { | |
| 28690 warning("W104", state.tokens.next, "object short notation", "6"); | |
| 28691 } | |
| 28692 i = propertyName(context, true); | |
| 28693 saveProperty(props, i, state.tokens.next); | |
| 28694 | |
| 28695 expression(context, 10); | |
| 28696 | |
| 28697 } else if (peek().id !== ":" && (nextVal === "get" || nextVal === "set")) { | |
| 28698 advance(nextVal); | |
| 28699 | |
| 28700 if (!state.inES5()) { | |
| 28701 error("E034"); | |
| 28702 } | |
| 28703 | |
| 28704 if (state.tokens.next.id === "[") { | |
| 28705 i = computedPropertyName(context); | |
| 28706 } else { | |
| 28707 i = propertyName(context); | |
| 28708 | |
| 28709 // ES6 allows for get() {...} and set() {...} method | |
| 28710 // definition shorthand syntax, so we don't produce an error | |
| 28711 // if linting ECMAScript 6 code. | |
| 28712 if (!i && !state.inES6()) { | |
| 28713 error("E035"); | |
| 28714 } | |
| 28715 } | |
| 28716 | |
| 28717 // We don't want to save this getter unless it's an actual getter | |
| 28718 // and not an ES6 concise method | |
| 28719 if (i) { | |
| 28720 saveAccessor(nextVal, props, i, state.tokens.curr); | |
| 28721 } | |
| 28722 | |
| 28723 t = state.tokens.next; | |
| 28724 f = doFunction(context, { isMethod: true }); | |
| 28725 params = f["(params)"]; | |
| 28726 | |
| 28727 // Don't warn about getter/setter pairs if this is an ES6 concise method | |
| 28728 if (nextVal === "get" && i && params.length) { | |
| 28729 warning("W076", t, params[0], i); | |
| 28730 } else if (nextVal === "set" && i && f["(metrics)"].arity !== 1) { | |
| 28731 warning("W077", t, i); | |
| 28732 } | |
| 28733 | |
| 28734 } else if (spreadrest("spread")) { | |
| 28735 if (!state.inES9()) { | |
| 28736 warning("W119", state.tokens.next, "object spread property", "9"); | |
| 28737 } | |
| 28738 | |
| 28739 expression(context, 10); | |
| 28740 } else { | |
| 28741 if (state.tokens.next.id === "async" && !checkPunctuators(peek(), ["(", ":"])) { | |
| 28742 if (!state.inES8()) { | |
| 28743 warning("W119", state.tokens.next, "async functions", "8"); | |
| 28744 } | |
| 28745 | |
| 28746 isAsyncMethod = true; | |
| 28747 advance(); | |
| 28748 | |
| 28749 nolinebreak(state.tokens.curr); | |
| 28750 } else { | |
| 28751 isAsyncMethod = false; | |
| 28752 } | |
| 28753 | |
| 28754 if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") { | |
| 28755 if (isAsyncMethod && !state.inES9()) { | |
| 28756 warning("W119", state.tokens.next, "async generators", "9"); | |
| 28757 } else if (!state.inES6()) { | |
| 28758 warning("W104", state.tokens.next, "generator functions", "6"); | |
| 28759 } | |
| 28760 | |
| 28761 advance("*"); | |
| 28762 isGeneratorMethod = true; | |
| 28763 } else { | |
| 28764 isGeneratorMethod = false; | |
| 28765 } | |
| 28766 | |
| 28767 if (state.tokens.next.id === "[") { | |
| 28768 i = computedPropertyName(context); | |
| 28769 state.nameStack.set(i); | |
| 28770 } else { | |
| 28771 state.nameStack.set(state.tokens.next); | |
| 28772 i = propertyName(context); | |
| 28773 saveProperty(props, i, state.tokens.next); | |
| 28774 | |
| 28775 if (typeof i !== "string") { | |
| 28776 break; | |
| 28777 } | |
| 28778 } | |
| 28779 | |
| 28780 if (state.tokens.next.value === "(") { | |
| 28781 if (!state.inES6()) { | |
| 28782 warning("W104", state.tokens.curr, "concise methods", "6"); | |
| 28783 } | |
| 28784 | |
| 28785 doFunction(isAsyncMethod ? context | prodParams.preAsync : context, { | |
| 28786 isMethod: true, | |
| 28787 type: isGeneratorMethod ? "generator" : null | |
| 28788 }); | |
| 28789 } else { | |
| 28790 advance(":"); | |
| 28791 expression(context, 10); | |
| 28792 } | |
| 28793 } | |
| 28794 | |
| 28795 countMember(i); | |
| 28796 | |
| 28797 if (state.tokens.next.id === ",") { | |
| 28798 advance(","); | |
| 28799 checkComma({ allowTrailing: true, property: true }); | |
| 28800 if (state.tokens.next.id === ",") { | |
| 28801 /* istanbul ignore next */ | |
| 28802 warning("W070", state.tokens.curr); | |
| 28803 } else if (state.tokens.next.id === "}" && !state.inES5()) { | |
| 28804 warning("W070", state.tokens.curr); | |
| 28805 } | |
| 28806 } else { | |
| 28807 if (state.option.trailingcomma && state.inES5()) { | |
| 28808 warningAt("W140", state.tokens.curr.line, state.tokens.curr.character); | |
| 28809 } | |
| 28810 break; | |
| 28811 } | |
| 28812 } | |
| 28813 if (b) { | |
| 28814 indent -= state.option.indent; | |
| 28815 } | |
| 28816 advance("}", this); | |
| 28817 | |
| 28818 checkProperties(props); | |
| 28819 state.inObjectBody = false; | |
| 28820 | |
| 28821 return this; | |
| 28822 }; | |
| 28823 x.fud = function() { | |
| 28824 /* istanbul ignore next */ | |
| 28825 error("E036", state.tokens.curr); | |
| 28826 }; | |
| 28827 }(delim("{"))); | |
| 28828 | |
| 28829 function destructuringPattern(context, options) { | |
| 28830 var isAssignment = options && options.assignment; | |
| 28831 | |
| 28832 context &= ~prodParams.noin; | |
| 28833 | |
| 28834 if (!state.inES6()) { | |
| 28835 warning("W104", state.tokens.curr, | |
| 28836 isAssignment ? "destructuring assignment" : "destructuring binding", "6"); | |
| 28837 } | |
| 28838 | |
| 28839 return destructuringPatternRecursive(context, options); | |
| 28840 } | |
| 28841 | |
| 28842 function destructuringPatternRecursive(context, options) { | |
| 28843 var ids, idx; | |
| 28844 var identifiers = []; | |
| 28845 var openingParsed = options && options.openingParsed; | |
| 28846 var isAssignment = options && options.assignment; | |
| 28847 var recursiveOptions = isAssignment ? { assignment: isAssignment } : null; | |
| 28848 var firstToken = openingParsed ? state.tokens.curr : state.tokens.next; | |
| 28849 | |
| 28850 var nextInnerDE = function() { | |
| 28851 var ident; | |
| 28852 if (checkPunctuators(state.tokens.next, ["[", "{"])) { | |
| 28853 ids = destructuringPatternRecursive(context, recursiveOptions); | |
| 28854 for (idx = 0; idx < ids.length; idx++) { | |
| 28855 identifiers.push({ id: ids[idx].id, token: ids[idx].token }); | |
| 28856 } | |
| 28857 } else if (checkPunctuator(state.tokens.next, ",")) { | |
| 28858 identifiers.push({ id: null, token: state.tokens.curr }); | |
| 28859 } else if (checkPunctuator(state.tokens.next, "(")) { | |
| 28860 advance("("); | |
| 28861 nextInnerDE(); | |
| 28862 advance(")"); | |
| 28863 } else { | |
| 28864 if (isAssignment) { | |
| 28865 var assignTarget = expression(context, 20); | |
| 28866 if (assignTarget) { | |
| 28867 checkLeftSideAssign(context, assignTarget); | |
| 28868 | |
| 28869 // if the target was a simple identifier, add it to the list to return | |
| 28870 if (assignTarget.identifier) { | |
| 28871 ident = assignTarget.value; | |
| 28872 } | |
| 28873 } | |
| 28874 } else { | |
| 28875 ident = identifier(context); | |
| 28876 } | |
| 28877 if (ident) { | |
| 28878 identifiers.push({ id: ident, token: state.tokens.curr }); | |
| 28879 } | |
| 28880 } | |
| 28881 }; | |
| 28882 | |
| 28883 var assignmentProperty = function(context) { | |
| 28884 var id, expr; | |
| 28885 | |
| 28886 if (checkPunctuator(state.tokens.next, "[")) { | |
| 28887 advance("["); | |
| 28888 expression(context, 10); | |
| 28889 advance("]"); | |
| 28890 advance(":"); | |
| 28891 nextInnerDE(); | |
| 28892 } else if (state.tokens.next.id === "(string)" || | |
| 28893 state.tokens.next.id === "(number)") { | |
| 28894 advance(); | |
| 28895 advance(":"); | |
| 28896 nextInnerDE(); | |
| 28897 } else { | |
| 28898 // this id will either be the property name or the property name and the assigning identifier | |
| 28899 var isRest = spreadrest("rest"); | |
| 28900 | |
| 28901 if (isRest) { | |
| 28902 if (!state.inES9()) { | |
| 28903 warning("W119", state.tokens.next, "object rest property", "9"); | |
| 28904 } | |
| 28905 | |
| 28906 // Due to visual symmetry with the array rest property (and the early | |
| 28907 // design of the language feature), developers may mistakenly assume | |
| 28908 // any expression is valid in this position. If the next token is not | |
| 28909 // an identifier, attempt to parse an expression and issue an error. | |
| 28910 // order to recover more gracefully from this condition. | |
| 28911 if (state.tokens.next.type === "(identifier)") { | |
| 28912 id = identifier(context); | |
| 28913 } else { | |
| 28914 expr = expression(context, 10); | |
| 28915 error("E030", expr, expr.value); | |
| 28916 } | |
| 28917 } else { | |
| 28918 id = identifier(context); | |
| 28919 } | |
| 28920 | |
| 28921 if (!isRest && checkPunctuator(state.tokens.next, ":")) { | |
| 28922 advance(":"); | |
| 28923 nextInnerDE(); | |
| 28924 } else if (id) { | |
| 28925 // in this case we are assigning (not declaring), so check assignment | |
| 28926 if (isAssignment) { | |
| 28927 checkLeftSideAssign(context, state.tokens.curr); | |
| 28928 } | |
| 28929 identifiers.push({ id: id, token: state.tokens.curr }); | |
| 28930 } | |
| 28931 | |
| 28932 if (isRest && checkPunctuator(state.tokens.next, ",")) { | |
| 28933 warning("W130", state.tokens.next); | |
| 28934 } | |
| 28935 } | |
| 28936 }; | |
| 28937 | |
| 28938 var id, value; | |
| 28939 if (checkPunctuator(firstToken, "[")) { | |
| 28940 if (!openingParsed) { | |
| 28941 advance("["); | |
| 28942 } | |
| 28943 if (checkPunctuator(state.tokens.next, "]")) { | |
| 28944 warning("W137", state.tokens.curr); | |
| 28945 } | |
| 28946 var element_after_rest = false; | |
| 28947 while (!checkPunctuator(state.tokens.next, "]")) { | |
| 28948 var isRest = spreadrest("rest"); | |
| 28949 | |
| 28950 nextInnerDE(); | |
| 28951 | |
| 28952 if (isRest && !element_after_rest && | |
| 28953 checkPunctuator(state.tokens.next, ",")) { | |
| 28954 warning("W130", state.tokens.next); | |
| 28955 element_after_rest = true; | |
| 28956 } | |
| 28957 if (!isRest && checkPunctuator(state.tokens.next, "=")) { | |
| 28958 if (checkPunctuator(state.tokens.prev, "...")) { | |
| 28959 /* istanbul ignore next */ | |
| 28960 advance("]"); | |
| 28961 } else { | |
| 28962 advance("="); | |
| 28963 } | |
| 28964 id = state.tokens.prev; | |
| 28965 value = expression(context, 10); | |
| 28966 if (value && value.identifier && value.value === "undefined") { | |
| 28967 warning("W080", id, id.value); | |
| 28968 } | |
| 28969 } | |
| 28970 if (!checkPunctuator(state.tokens.next, "]")) { | |
| 28971 advance(","); | |
| 28972 } | |
| 28973 } | |
| 28974 advance("]"); | |
| 28975 } else if (checkPunctuator(firstToken, "{")) { | |
| 28976 | |
| 28977 if (!openingParsed) { | |
| 28978 advance("{"); | |
| 28979 } | |
| 28980 if (checkPunctuator(state.tokens.next, "}")) { | |
| 28981 warning("W137", state.tokens.curr); | |
| 28982 } | |
| 28983 while (!checkPunctuator(state.tokens.next, "}")) { | |
| 28984 assignmentProperty(context); | |
| 28985 if (checkPunctuator(state.tokens.next, "=")) { | |
| 28986 advance("="); | |
| 28987 id = state.tokens.prev; | |
| 28988 value = expression(context, 10); | |
| 28989 if (value && value.identifier && value.value === "undefined") { | |
| 28990 warning("W080", id, id.value); | |
| 28991 } | |
| 28992 } | |
| 28993 if (!checkPunctuator(state.tokens.next, "}")) { | |
| 28994 advance(","); | |
| 28995 if (checkPunctuator(state.tokens.next, "}")) { | |
| 28996 // Trailing comma | |
| 28997 // ObjectBindingPattern: { BindingPropertyList , } | |
| 28998 break; | |
| 28999 } | |
| 29000 } | |
| 29001 } | |
| 29002 advance("}"); | |
| 29003 } | |
| 29004 return identifiers; | |
| 29005 } | |
| 29006 | |
| 29007 function destructuringPatternMatch(tokens, value) { | |
| 29008 var first = value.first; | |
| 29009 | |
| 29010 if (!first) | |
| 29011 return; | |
| 29012 | |
| 29013 _.zip(tokens, Array.isArray(first) ? first : [ first ]).forEach(function(val) { | |
| 29014 var token = val[0]; | |
| 29015 var value = val[1]; | |
| 29016 | |
| 29017 if (token && value) | |
| 29018 token.first = value; | |
| 29019 else if (token && token.first && !value) | |
| 29020 /* istanbul ignore next */ | |
| 29021 warning("W080", token.first, token.first.value); | |
| 29022 }); | |
| 29023 } | |
| 29024 | |
| 29025 function blockVariableStatement(type, statement, context) { | |
| 29026 // used for both let and const statements | |
| 29027 | |
| 29028 var noin = context & prodParams.noin; | |
| 29029 var inexport = context & prodParams.export; | |
| 29030 var isLet = type === "let"; | |
| 29031 var isConst = type === "const"; | |
| 29032 var tokens, lone, value, letblock; | |
| 29033 | |
| 29034 if (!state.inES6()) { | |
| 29035 warning("W104", state.tokens.curr, type, "6"); | |
| 29036 } | |
| 29037 | |
| 29038 if (isLet && isMozillaLet()) { | |
| 29039 advance("("); | |
| 29040 state.funct["(scope)"].stack(); | |
| 29041 letblock = true; | |
| 29042 statement.declaration = false; | |
| 29043 } | |
| 29044 | |
| 29045 statement.first = []; | |
| 29046 for (;;) { | |
| 29047 var names = []; | |
| 29048 if (_.includes(["{", "["], state.tokens.next.value)) { | |
| 29049 tokens = destructuringPattern(context); | |
| 29050 lone = false; | |
| 29051 } else { | |
| 29052 tokens = [ { id: identifier(context), token: state.tokens.curr } ]; | |
| 29053 lone = true; | |
| 29054 } | |
| 29055 | |
| 29056 // A `const` declaration without an initializer is permissible within the | |
| 29057 // head of for-in and for-of statements. If this binding list is being | |
| 29058 // parsed as part of a `for` statement of any kind, allow the initializer | |
| 29059 // to be omitted. Although this may erroneously allow such forms from | |
| 29060 // "C-style" `for` statements (i.e. `for (const x;;) {}`, the `for` | |
| 29061 // statement logic includes dedicated logic to issue the error for such | |
| 29062 // cases. | |
| 29063 if (!noin && isConst && state.tokens.next.id !== "=") { | |
| 29064 warning("E012", state.tokens.curr, state.tokens.curr.value); | |
| 29065 } | |
| 29066 | |
| 29067 for (var t in tokens) { | |
| 29068 if (tokens.hasOwnProperty(t)) { | |
| 29069 t = tokens[t]; | |
| 29070 | |
| 29071 // It is a Syntax Error if the BoundNames of BindingList contains | |
| 29072 // "let". | |
| 29073 if (t.id === "let") { | |
| 29074 /* istanbul ignore next */ | |
| 29075 warning("W024", t.token, t.id); | |
| 29076 } | |
| 29077 | |
| 29078 if (state.funct["(scope)"].block.isGlobal()) { | |
| 29079 if (predefined[t.id] === false) { | |
| 29080 warning("W079", t.token, t.id); | |
| 29081 } | |
| 29082 } | |
| 29083 if (t.id) { | |
| 29084 state.funct["(scope)"].addbinding(t.id, { | |
| 29085 type: type, | |
| 29086 token: t.token }); | |
| 29087 names.push(t.token); | |
| 29088 } | |
| 29089 } | |
| 29090 } | |
| 29091 | |
| 29092 if (state.tokens.next.id === "=") { | |
| 29093 statement.hasInitializer = true; | |
| 29094 | |
| 29095 advance("="); | |
| 29096 if (!noin && peek(0).id === "=" && state.tokens.next.identifier) { | |
| 29097 warning("W120", state.tokens.next, state.tokens.next.value); | |
| 29098 } | |
| 29099 var id = state.tokens.prev; | |
| 29100 value = expression(context, 10); | |
| 29101 if (value) { | |
| 29102 if (value.identifier && value.value === "undefined") { | |
| 29103 warning("W080", id, id.value); | |
| 29104 } | |
| 29105 if (!lone) { | |
| 29106 destructuringPatternMatch(names, value); | |
| 29107 } | |
| 29108 } | |
| 29109 } | |
| 29110 | |
| 29111 // Bindings are not immediately initialized in for-in and for-of | |
| 29112 // statements. As with `const` initializers (described above), the `for` | |
| 29113 // statement parsing logic includes | |
| 29114 if (state.tokens.next.value !== "in" && state.tokens.next.value !== "of") { | |
| 29115 for (t in tokens) { | |
| 29116 if (tokens.hasOwnProperty(t)) { | |
| 29117 t = tokens[t]; | |
| 29118 state.funct["(scope)"].initialize(t.id); | |
| 29119 | |
| 29120 if (lone && inexport) { | |
| 29121 state.funct["(scope)"].setExported(t.token.value, t.token); | |
| 29122 } | |
| 29123 } | |
| 29124 } | |
| 29125 } | |
| 29126 | |
| 29127 statement.first = statement.first.concat(names); | |
| 29128 | |
| 29129 if (state.tokens.next.id !== ",") { | |
| 29130 break; | |
| 29131 } | |
| 29132 | |
| 29133 statement.hasComma = true; | |
| 29134 advance(","); | |
| 29135 checkComma(); | |
| 29136 } | |
| 29137 if (letblock) { | |
| 29138 advance(")"); | |
| 29139 block(context, true, true); | |
| 29140 statement.block = true; | |
| 29141 state.funct["(scope)"].unstack(); | |
| 29142 } | |
| 29143 | |
| 29144 return statement; | |
| 29145 } | |
| 29146 | |
| 29147 var conststatement = stmt("const", function(context) { | |
| 29148 return blockVariableStatement("const", this, context); | |
| 29149 }); | |
| 29150 conststatement.exps = true; | |
| 29151 conststatement.declaration = true; | |
| 29152 | |
| 29153 | |
| 29154 /** | |
| 29155 * Determine if the current `let` token designates the beginning of a "let | |
| 29156 * block" or "let expression" as implemented in the Mozilla SpiderMonkey | |
| 29157 * engine. | |
| 29158 * | |
| 29159 * This function will only return `true` if Mozilla extensions have been | |
| 29160 * enabled. It would be preferable to detect the language feature regardless | |
| 29161 * of the parser's state because this would allow JSHint to instruct users to | |
| 29162 * enable the `moz` option where necessary. This is not possible because the | |
| 29163 * language extension is not compatible with standard JavaScript. For | |
| 29164 * example, the following program code may describe a "let block" or a | |
| 29165 * function invocation: | |
| 29166 * | |
| 29167 * let(x) | |
| 29168 * { | |
| 29169 * typeof x; | |
| 29170 * } | |
| 29171 * | |
| 29172 * @returns {boolean} | |
| 29173 */ | |
| 29174 function isMozillaLet() { | |
| 29175 return state.tokens.next.id === "(" && state.inMoz(); | |
| 29176 } | |
| 29177 var letstatement = stmt("let", function(context) { | |
| 29178 return blockVariableStatement("let", this, context); | |
| 29179 }); | |
| 29180 letstatement.nud = function(context, rbp) { | |
| 29181 if (isMozillaLet()) { | |
| 29182 // create a new block scope we use only for the current expression | |
| 29183 state.funct["(scope)"].stack(); | |
| 29184 advance("("); | |
| 29185 state.tokens.prev.fud(context); | |
| 29186 advance(")"); | |
| 29187 expression(context, rbp); | |
| 29188 state.funct["(scope)"].unstack(); | |
| 29189 } else { | |
| 29190 this.exps = false; | |
| 29191 return state.syntax["(identifier)"].nud.apply(this, arguments); | |
| 29192 } | |
| 29193 }; | |
| 29194 letstatement.meta = { es5: true, isFutureReservedWord: false, strictOnly: true }; | |
| 29195 letstatement.exps = true; | |
| 29196 letstatement.declaration = true; | |
| 29197 letstatement.useFud = function(context) { | |
| 29198 var next = state.tokens.next; | |
| 29199 var nextIsBindingName; | |
| 29200 | |
| 29201 if (this.line !== next.line && !state.inES6()) { | |
| 29202 return false; | |
| 29203 } | |
| 29204 | |
| 29205 // JSHint generally interprets `let` as a reserved word even though it is | |
| 29206 // not considered as such by the ECMAScript specification because doing so | |
| 29207 // simplifies parsing logic. It is special-cased here so that code such as | |
| 29208 // | |
| 29209 // let | |
| 29210 // let | |
| 29211 // | |
| 29212 // is correctly interpreted as an invalid LexicalBinding. (Without this | |
| 29213 // consideration, the code above would be parsed as two | |
| 29214 // IdentifierReferences.) | |
| 29215 nextIsBindingName = next.identifier && (!isReserved(context, next) || | |
| 29216 next.id === "let"); | |
| 29217 | |
| 29218 return nextIsBindingName || checkPunctuators(next, ["{", "["]) || | |
| 29219 isMozillaLet(); | |
| 29220 }; | |
| 29221 | |
| 29222 var varstatement = stmt("var", function(context) { | |
| 29223 var noin = context & prodParams.noin; | |
| 29224 var inexport = context & prodParams.export; | |
| 29225 var tokens, lone, value, id; | |
| 29226 | |
| 29227 this.first = []; | |
| 29228 for (;;) { | |
| 29229 var names = []; | |
| 29230 if (_.includes(["{", "["], state.tokens.next.value)) { | |
| 29231 tokens = destructuringPattern(context); | |
| 29232 lone = false; | |
| 29233 } else { | |
| 29234 tokens = []; | |
| 29235 id = identifier(context); | |
| 29236 | |
| 29237 if (id) { | |
| 29238 tokens.push({ id: id, token: state.tokens.curr }); | |
| 29239 } | |
| 29240 | |
| 29241 lone = true; | |
| 29242 } | |
| 29243 | |
| 29244 if (state.option.varstmt) { | |
| 29245 warning("W132", this); | |
| 29246 } | |
| 29247 | |
| 29248 | |
| 29249 for (var t in tokens) { | |
| 29250 if (tokens.hasOwnProperty(t)) { | |
| 29251 t = tokens[t]; | |
| 29252 if (state.funct["(global)"] && !state.impliedClosure()) { | |
| 29253 if (predefined[t.id] === false) { | |
| 29254 warning("W079", t.token, t.id); | |
| 29255 } else if (state.option.futurehostile === false) { | |
| 29256 if ((!state.inES5() && vars.ecmaIdentifiers[5][t.id] === false) || | |
| 29257 (!state.inES6() && vars.ecmaIdentifiers[6][t.id] === false)) { | |
| 29258 warning("W129", t.token, t.id); | |
| 29259 } | |
| 29260 } | |
| 29261 } | |
| 29262 if (t.id) { | |
| 29263 state.funct["(scope)"].addbinding(t.id, { | |
| 29264 type: "var", | |
| 29265 token: t.token }); | |
| 29266 | |
| 29267 if (lone && inexport) { | |
| 29268 state.funct["(scope)"].setExported(t.id, t.token); | |
| 29269 } | |
| 29270 names.push(t.token); | |
| 29271 } | |
| 29272 } | |
| 29273 } | |
| 29274 | |
| 29275 if (state.tokens.next.id === "=") { | |
| 29276 this.hasInitializer = true; | |
| 29277 | |
| 29278 state.nameStack.set(state.tokens.curr); | |
| 29279 | |
| 29280 advance("="); | |
| 29281 if (peek(0).id === "=" && state.tokens.next.identifier) { | |
| 29282 if (!noin && | |
| 29283 !state.funct["(params)"] || | |
| 29284 state.funct["(params)"].indexOf(state.tokens.next.value) === -1) { | |
| 29285 warning("W120", state.tokens.next, state.tokens.next.value); | |
| 29286 } | |
| 29287 } | |
| 29288 id = state.tokens.prev; | |
| 29289 value = expression(context, 10); | |
| 29290 if (value) { | |
| 29291 if (!state.funct["(loopage)"] && value.identifier && | |
| 29292 value.value === "undefined") { | |
| 29293 warning("W080", id, id.value); | |
| 29294 } | |
| 29295 if (!lone) { | |
| 29296 destructuringPatternMatch(names, value); | |
| 29297 } | |
| 29298 } | |
| 29299 } | |
| 29300 | |
| 29301 this.first = this.first.concat(names); | |
| 29302 | |
| 29303 if (state.tokens.next.id !== ",") { | |
| 29304 break; | |
| 29305 } | |
| 29306 this.hasComma = true; | |
| 29307 advance(","); | |
| 29308 checkComma(); | |
| 29309 } | |
| 29310 | |
| 29311 return this; | |
| 29312 }); | |
| 29313 varstatement.exps = true; | |
| 29314 | |
| 29315 blockstmt("function", function(context) { | |
| 29316 var inexport = context & prodParams.export; | |
| 29317 var generator = false; | |
| 29318 var isAsync = context & prodParams.preAsync; | |
| 29319 var labelType = ""; | |
| 29320 | |
| 29321 if (isAsync) { | |
| 29322 labelType = "async "; | |
| 29323 } | |
| 29324 | |
| 29325 if (state.tokens.next.value === "*") { | |
| 29326 if (isAsync && !state.inES9()) { | |
| 29327 warning("W119", state.tokens.prev, "async generators", "9"); | |
| 29328 } else if (!isAsync && !state.inES6(true)) { | |
| 29329 warning("W119", state.tokens.next, "function*", "6"); | |
| 29330 } | |
| 29331 | |
| 29332 advance("*"); | |
| 29333 labelType += "generator "; | |
| 29334 generator = true; | |
| 29335 } | |
| 29336 | |
| 29337 labelType += "function"; | |
| 29338 | |
| 29339 if (inblock) { | |
| 29340 warning("W082", state.tokens.curr); | |
| 29341 } | |
| 29342 var nameToken = optionalidentifier(context) ? state.tokens.curr : null; | |
| 29343 | |
| 29344 if (!nameToken) { | |
| 29345 if (!inexport) { | |
| 29346 warning("W025"); | |
| 29347 } | |
| 29348 } else { | |
| 29349 state.funct["(scope)"].addbinding(nameToken.value, { | |
| 29350 type: labelType, | |
| 29351 token: state.tokens.curr, | |
| 29352 initialized: true }); | |
| 29353 | |
| 29354 if (inexport) { | |
| 29355 state.funct["(scope)"].setExported(nameToken.value, state.tokens.prev); | |
| 29356 } | |
| 29357 } | |
| 29358 | |
| 29359 var f = doFunction(context, { | |
| 29360 name: nameToken && nameToken.value, | |
| 29361 statement: this, | |
| 29362 type: generator ? "generator" : null, | |
| 29363 ignoreLoopFunc: inblock // a declaration may already have warned | |
| 29364 }); | |
| 29365 | |
| 29366 // If the function declaration is strict because the surrounding code is | |
| 29367 // strict, the invalid name will trigger E008 when the scope manager | |
| 29368 // attempts to create a binding in the strict environment record. An error | |
| 29369 // should only be signaled here when the function itself enables strict | |
| 29370 // mode (the scope manager will not report an error because a declaration | |
| 29371 // does not introduce a binding into the function's environment record). | |
| 29372 var enablesStrictMode = f["(isStrict)"] && !state.isStrict(); | |
| 29373 if (nameToken && (f["(name)"] === "arguments" || f["(name)"] === "eval") && | |
| 29374 enablesStrictMode) { | |
| 29375 error("E008", nameToken); | |
| 29376 } | |
| 29377 | |
| 29378 if (state.tokens.next.id === "(" && state.tokens.next.line === state.tokens.curr.line) { | |
| 29379 /* istanbul ignore next */ | |
| 29380 error("E039"); | |
| 29381 } | |
| 29382 return this; | |
| 29383 }).declaration = true; | |
| 29384 | |
| 29385 prefix("function", function(context) { | |
| 29386 var generator = false; | |
| 29387 var isAsync = context & prodParams.preAsync; | |
| 29388 | |
| 29389 if (state.tokens.next.value === "*") { | |
| 29390 if (isAsync && !state.inES9()) { | |
| 29391 warning("W119", state.tokens.prev, "async generators", "9"); | |
| 29392 } else if (!isAsync && !state.inES6(true)) { | |
| 29393 warning("W119", state.tokens.curr, "function*", "6"); | |
| 29394 } | |
| 29395 | |
| 29396 advance("*"); | |
| 29397 generator = true; | |
| 29398 } | |
| 29399 | |
| 29400 // This context modification restricts the use of `await` as the optional | |
| 29401 // BindingIdentifier in async function expressions. | |
| 29402 var nameToken = optionalidentifier(isAsync ? context | prodParams.async : context) ? | |
| 29403 state.tokens.curr : null; | |
| 29404 | |
| 29405 var f = doFunction(context, { | |
| 29406 name: nameToken && nameToken.value, | |
| 29407 type: generator ? "generator" : null | |
| 29408 }); | |
| 29409 | |
| 29410 if (generator && nameToken && nameToken.value === "yield") { | |
| 29411 error("E024", nameToken, "yield"); | |
| 29412 } | |
| 29413 | |
| 29414 if (nameToken && (f["(name)"] === "arguments" || f["(name)"] === "eval") && | |
| 29415 f["(isStrict)"]) { | |
| 29416 error("E008", nameToken); | |
| 29417 } | |
| 29418 | |
| 29419 return this; | |
| 29420 }); | |
| 29421 | |
| 29422 blockstmt("if", function(context) { | |
| 29423 var t = state.tokens.next; | |
| 29424 increaseComplexityCount(); | |
| 29425 advance("("); | |
| 29426 var expr = expression(context, 0); | |
| 29427 | |
| 29428 if (!expr) { | |
| 29429 quit("E041", this); | |
| 29430 } | |
| 29431 | |
| 29432 checkCondAssignment(expr); | |
| 29433 | |
| 29434 // When the if is within a for-in loop, check if the condition | |
| 29435 // starts with a negation operator | |
| 29436 var forinifcheck = null; | |
| 29437 if (state.option.forin && state.forinifcheckneeded) { | |
| 29438 state.forinifcheckneeded = false; // We only need to analyze the first if inside the loop | |
| 29439 forinifcheck = state.forinifchecks[state.forinifchecks.length - 1]; | |
| 29440 if (expr.type === "(punctuator)" && expr.value === "!") { | |
| 29441 forinifcheck.type = "(negative)"; | |
| 29442 } else { | |
| 29443 forinifcheck.type = "(positive)"; | |
| 29444 } | |
| 29445 } | |
| 29446 | |
| 29447 advance(")", t); | |
| 29448 var s = block(context, true, true); | |
| 29449 | |
| 29450 // When the if is within a for-in loop and the condition has a negative form, | |
| 29451 // check if the body contains nothing but a continue statement | |
| 29452 if (forinifcheck && forinifcheck.type === "(negative)") { | |
| 29453 if (s && s[0] && s[0].type === "(identifier)" && s[0].value === "continue") { | |
| 29454 forinifcheck.type = "(negative-with-continue)"; | |
| 29455 } | |
| 29456 } | |
| 29457 | |
| 29458 if (state.tokens.next.id === "else") { | |
| 29459 advance("else"); | |
| 29460 if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") { | |
| 29461 statement(context); | |
| 29462 } else { | |
| 29463 block(context, true, true); | |
| 29464 } | |
| 29465 } | |
| 29466 return this; | |
| 29467 }); | |
| 29468 | |
| 29469 blockstmt("try", function(context) { | |
| 29470 var b; | |
| 29471 var hasParameter = false; | |
| 29472 | |
| 29473 function catchParameter() { | |
| 29474 advance("("); | |
| 29475 | |
| 29476 if (checkPunctuators(state.tokens.next, ["[", "{"])) { | |
| 29477 var tokens = destructuringPattern(context); | |
| 29478 _.each(tokens, function(token) { | |
| 29479 if (token.id) { | |
| 29480 state.funct["(scope)"].addParam(token.id, token, "exception"); | |
| 29481 } | |
| 29482 }); | |
| 29483 } else if (state.tokens.next.type !== "(identifier)") { | |
| 29484 warning("E030", state.tokens.next, state.tokens.next.value); | |
| 29485 } else { | |
| 29486 // only advance if an identifier is present. This allows JSHint to | |
| 29487 // recover from the case where no value is specified. | |
| 29488 state.funct["(scope)"].addParam(identifier(context), state.tokens.curr, "exception"); | |
| 29489 } | |
| 29490 | |
| 29491 if (state.tokens.next.value === "if") { | |
| 29492 if (!state.inMoz()) { | |
| 29493 warning("W118", state.tokens.curr, "catch filter"); | |
| 29494 } | |
| 29495 advance("if"); | |
| 29496 expression(context, 0); | |
| 29497 } | |
| 29498 | |
| 29499 advance(")"); | |
| 29500 } | |
| 29501 | |
| 29502 block(context | prodParams.tryClause, true); | |
| 29503 | |
| 29504 while (state.tokens.next.id === "catch") { | |
| 29505 increaseComplexityCount(); | |
| 29506 if (b && (!state.inMoz())) { | |
| 29507 warning("W118", state.tokens.next, "multiple catch blocks"); | |
| 29508 } | |
| 29509 advance("catch"); | |
| 29510 if (state.tokens.next.id !== "{") { | |
| 29511 state.funct["(scope)"].stack("catchparams"); | |
| 29512 hasParameter = true; | |
| 29513 catchParameter(); | |
| 29514 } else if (!state.inES10()) { | |
| 29515 warning("W119", state.tokens.curr, "optional catch binding", "10"); | |
| 29516 } | |
| 29517 block(context, false); | |
| 29518 | |
| 29519 if (hasParameter) { | |
| 29520 state.funct["(scope)"].unstack(); | |
| 29521 hasParameter = false; | |
| 29522 } | |
| 29523 b = true; | |
| 29524 } | |
| 29525 | |
| 29526 if (state.tokens.next.id === "finally") { | |
| 29527 advance("finally"); | |
| 29528 block(context, true); | |
| 29529 return; | |
| 29530 } | |
| 29531 | |
| 29532 if (!b) { | |
| 29533 error("E021", state.tokens.next, "catch", state.tokens.next.value); | |
| 29534 } | |
| 29535 | |
| 29536 return this; | |
| 29537 }); | |
| 29538 | |
| 29539 blockstmt("while", function(context) { | |
| 29540 var t = state.tokens.next; | |
| 29541 state.funct["(breakage)"] += 1; | |
| 29542 state.funct["(loopage)"] += 1; | |
| 29543 increaseComplexityCount(); | |
| 29544 advance("("); | |
| 29545 checkCondAssignment(expression(context, 0)); | |
| 29546 advance(")", t); | |
| 29547 block(context, true, true); | |
| 29548 state.funct["(breakage)"] -= 1; | |
| 29549 state.funct["(loopage)"] -= 1; | |
| 29550 return this; | |
| 29551 }).labelled = true; | |
| 29552 | |
| 29553 blockstmt("with", function(context) { | |
| 29554 var t = state.tokens.next; | |
| 29555 if (state.isStrict()) { | |
| 29556 error("E010", state.tokens.curr); | |
| 29557 } else if (!state.option.withstmt) { | |
| 29558 warning("W085", state.tokens.curr); | |
| 29559 } | |
| 29560 | |
| 29561 advance("("); | |
| 29562 expression(context, 0); | |
| 29563 advance(")", t); | |
| 29564 block(context, true, true); | |
| 29565 | |
| 29566 return this; | |
| 29567 }); | |
| 29568 | |
| 29569 blockstmt("switch", function(context) { | |
| 29570 var t = state.tokens.next; | |
| 29571 var g = false; | |
| 29572 var noindent = false; | |
| 29573 var seenCase = false; | |
| 29574 | |
| 29575 state.funct["(breakage)"] += 1; | |
| 29576 advance("("); | |
| 29577 checkCondAssignment(expression(context, 0)); | |
| 29578 advance(")", t); | |
| 29579 t = state.tokens.next; | |
| 29580 advance("{"); | |
| 29581 state.funct["(scope)"].stack(); | |
| 29582 | |
| 29583 if (state.tokens.next.from === indent) | |
| 29584 noindent = true; | |
| 29585 | |
| 29586 if (!noindent) | |
| 29587 indent += state.option.indent; | |
| 29588 | |
| 29589 for (;;) { | |
| 29590 switch (state.tokens.next.id) { | |
| 29591 case "case": | |
| 29592 switch (state.funct["(verb)"]) { | |
| 29593 case "yield": | |
| 29594 case "break": | |
| 29595 case "case": | |
| 29596 case "continue": | |
| 29597 case "return": | |
| 29598 case "switch": | |
| 29599 case "throw": | |
| 29600 break; | |
| 29601 case "default": | |
| 29602 if (state.option.leanswitch) { | |
| 29603 warning("W145", state.tokens.next); | |
| 29604 } | |
| 29605 | |
| 29606 break; | |
| 29607 default: | |
| 29608 // You can tell JSHint that you don't use break intentionally by | |
| 29609 // adding a comment /* falls through */ on a line just before | |
| 29610 // the next `case`. | |
| 29611 if (!state.tokens.curr.caseFallsThrough) { | |
| 29612 warning("W086", state.tokens.curr, "case"); | |
| 29613 } | |
| 29614 } | |
| 29615 | |
| 29616 advance("case"); | |
| 29617 expression(context, 0); | |
| 29618 seenCase = true; | |
| 29619 increaseComplexityCount(); | |
| 29620 g = true; | |
| 29621 advance(":"); | |
| 29622 state.funct["(verb)"] = "case"; | |
| 29623 break; | |
| 29624 case "default": | |
| 29625 switch (state.funct["(verb)"]) { | |
| 29626 case "yield": | |
| 29627 case "break": | |
| 29628 case "continue": | |
| 29629 case "return": | |
| 29630 case "throw": | |
| 29631 break; | |
| 29632 case "case": | |
| 29633 if (state.option.leanswitch) { | |
| 29634 warning("W145", state.tokens.curr); | |
| 29635 } | |
| 29636 | |
| 29637 break; | |
| 29638 default: | |
| 29639 // Do not display a warning if 'default' is the first statement or if | |
| 29640 // there is a special /* falls through */ comment. | |
| 29641 if (seenCase && !state.tokens.curr.caseFallsThrough) { | |
| 29642 warning("W086", state.tokens.curr, "default"); | |
| 29643 } | |
| 29644 } | |
| 29645 | |
| 29646 advance("default"); | |
| 29647 g = true; | |
| 29648 advance(":"); | |
| 29649 state.funct["(verb)"] = "default"; | |
| 29650 break; | |
| 29651 case "}": | |
| 29652 if (!noindent) | |
| 29653 indent -= state.option.indent; | |
| 29654 | |
| 29655 advance("}", t); | |
| 29656 state.funct["(scope)"].unstack(); | |
| 29657 state.funct["(breakage)"] -= 1; | |
| 29658 state.funct["(verb)"] = undefined; | |
| 29659 return; | |
| 29660 /* istanbul ignore next */ | |
| 29661 case "(end)": | |
| 29662 error("E023", state.tokens.next, "}"); | |
| 29663 return; | |
| 29664 default: | |
| 29665 indent += state.option.indent; | |
| 29666 if (g) { | |
| 29667 switch (state.tokens.curr.id) { | |
| 29668 /* istanbul ignore next */ | |
| 29669 case ",": | |
| 29670 error("E040"); | |
| 29671 return; | |
| 29672 case ":": | |
| 29673 g = false; | |
| 29674 statements(context); | |
| 29675 break; | |
| 29676 /* istanbul ignore next */ | |
| 29677 default: | |
| 29678 error("E025", state.tokens.curr); | |
| 29679 return; | |
| 29680 } | |
| 29681 } else { | |
| 29682 /* istanbul ignore else */ | |
| 29683 if (state.tokens.curr.id === ":") { | |
| 29684 advance(":"); | |
| 29685 error("E024", state.tokens.curr, ":"); | |
| 29686 statements(context); | |
| 29687 } else { | |
| 29688 error("E021", state.tokens.next, "case", state.tokens.next.value); | |
| 29689 return; | |
| 29690 } | |
| 29691 } | |
| 29692 indent -= state.option.indent; | |
| 29693 } | |
| 29694 } | |
| 29695 }).labelled = true; | |
| 29696 | |
| 29697 stmt("debugger", function() { | |
| 29698 if (!state.option.debug) { | |
| 29699 warning("W087", this); | |
| 29700 } | |
| 29701 return this; | |
| 29702 }).exps = true; | |
| 29703 | |
| 29704 (function() { | |
| 29705 var x = stmt("do", function(context) { | |
| 29706 state.funct["(breakage)"] += 1; | |
| 29707 state.funct["(loopage)"] += 1; | |
| 29708 increaseComplexityCount(); | |
| 29709 | |
| 29710 this.first = block(context, true, true); | |
| 29711 advance("while"); | |
| 29712 var t = state.tokens.next; | |
| 29713 advance("("); | |
| 29714 checkCondAssignment(expression(context, 0)); | |
| 29715 advance(")", t); | |
| 29716 state.funct["(breakage)"] -= 1; | |
| 29717 state.funct["(loopage)"] -= 1; | |
| 29718 return this; | |
| 29719 }); | |
| 29720 x.labelled = true; | |
| 29721 x.exps = true; | |
| 29722 }()); | |
| 29723 | |
| 29724 blockstmt("for", function(context) { | |
| 29725 var s, t = state.tokens.next; | |
| 29726 var letscope = false; | |
| 29727 var isAsync = false; | |
| 29728 var foreachtok = null; | |
| 29729 | |
| 29730 if (t.value === "each") { | |
| 29731 foreachtok = t; | |
| 29732 advance("each"); | |
| 29733 if (!state.inMoz()) { | |
| 29734 warning("W118", state.tokens.curr, "for each"); | |
| 29735 } | |
| 29736 } | |
| 29737 | |
| 29738 if (state.tokens.next.identifier && state.tokens.next.value === "await") { | |
| 29739 advance("await"); | |
| 29740 isAsync = true; | |
| 29741 | |
| 29742 if (!(context & prodParams.async)) { | |
| 29743 error("E024", state.tokens.curr, "await"); | |
| 29744 } else if (!state.inES9()) { | |
| 29745 warning("W119", state.tokens.curr, "asynchronous iteration", "9"); | |
| 29746 } | |
| 29747 } | |
| 29748 | |
| 29749 increaseComplexityCount(); | |
| 29750 advance("("); | |
| 29751 | |
| 29752 // what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)? | |
| 29753 var nextop; // contains the token of the "in" or "of" operator | |
| 29754 var comma; // First comma punctuator at level 0 | |
| 29755 var initializer; // First initializer at level 0 | |
| 29756 var bindingPower; | |
| 29757 var targets; | |
| 29758 var target; | |
| 29759 var decl; | |
| 29760 var afterNext = peek(); | |
| 29761 | |
| 29762 var headContext = context | prodParams.noin; | |
| 29763 | |
| 29764 if (state.tokens.next.id === "var") { | |
| 29765 advance("var"); | |
| 29766 decl = state.tokens.curr.fud(headContext); | |
| 29767 comma = decl.hasComma ? decl : null; | |
| 29768 initializer = decl.hasInitializer ? decl : null; | |
| 29769 } else if (state.tokens.next.id === "const" || | |
| 29770 // The "let" keyword only signals a lexical binding if it is followed by | |
| 29771 // an identifier, `{`, or `[`. Otherwise, it should be parsed as an | |
| 29772 // IdentifierReference (i.e. in a subsquent branch). | |
| 29773 (state.tokens.next.id === "let" && | |
| 29774 ((afterNext.identifier && afterNext.id !== "in") || | |
| 29775 checkPunctuators(afterNext, ["{", "["])))) { | |
| 29776 advance(state.tokens.next.id); | |
| 29777 // create a new block scope | |
| 29778 letscope = true; | |
| 29779 state.funct["(scope)"].stack(); | |
| 29780 decl = state.tokens.curr.fud(headContext); | |
| 29781 comma = decl.hasComma ? decl : null; | |
| 29782 initializer = decl.hasInitializer ? decl : null; | |
| 29783 } else if (!checkPunctuator(state.tokens.next, ";")) { | |
| 29784 targets = []; | |
| 29785 | |
| 29786 while (state.tokens.next.value !== "in" && | |
| 29787 state.tokens.next.value !== "of" && | |
| 29788 !checkPunctuator(state.tokens.next, ";")) { | |
| 29789 | |
| 29790 if (checkPunctuators(state.tokens.next, ["{", "["])) { | |
| 29791 destructuringPattern(headContext, { assignment: true }) | |
| 29792 .forEach(function(elem) { | |
| 29793 this.push(elem.token); | |
| 29794 }, targets); | |
| 29795 if (checkPunctuator(state.tokens.next, "=")) { | |
| 29796 advance("="); | |
| 29797 initializer = state.tokens.curr; | |
| 29798 expression(headContext, 10); | |
| 29799 } | |
| 29800 } else { | |
| 29801 target = expression(headContext, 10); | |
| 29802 | |
| 29803 if (target) { | |
| 29804 if (target.type === "(identifier)") { | |
| 29805 targets.push(target); | |
| 29806 } else if (checkPunctuator(target, "=")) { | |
| 29807 initializer = target; | |
| 29808 targets.push(target); | |
| 29809 } | |
| 29810 } | |
| 29811 } | |
| 29812 | |
| 29813 if (checkPunctuator(state.tokens.next, ",")) { | |
| 29814 advance(","); | |
| 29815 | |
| 29816 if (!comma) { | |
| 29817 comma = state.tokens.curr; | |
| 29818 } | |
| 29819 } | |
| 29820 } | |
| 29821 | |
| 29822 //checkLeftSideAssign(target, nextop); | |
| 29823 | |
| 29824 // In the event of a syntax error, do not issue warnings regarding the | |
| 29825 // implicit creation of bindings. | |
| 29826 if (!initializer && !comma) { | |
| 29827 targets.forEach(function(token) { | |
| 29828 if (!state.funct["(scope)"].has(token.value)) { | |
| 29829 warning("W088", token, token.value); | |
| 29830 } | |
| 29831 }); | |
| 29832 } | |
| 29833 } | |
| 29834 | |
| 29835 nextop = state.tokens.next; | |
| 29836 | |
| 29837 if (isAsync && nextop.value !== "of") { | |
| 29838 error("E066", nextop); | |
| 29839 } | |
| 29840 | |
| 29841 // if we're in a for (… in|of …) statement | |
| 29842 if (_.includes(["in", "of"], nextop.value)) { | |
| 29843 if (nextop.value === "of") { | |
| 29844 bindingPower = 20; | |
| 29845 | |
| 29846 if (!state.inES6()) { | |
| 29847 warning("W104", nextop, "for of", "6"); | |
| 29848 } | |
| 29849 } else { | |
| 29850 bindingPower = 0; | |
| 29851 } | |
| 29852 if (comma) { | |
| 29853 error("W133", comma, nextop.value, "more than one ForBinding"); | |
| 29854 } | |
| 29855 if (initializer) { | |
| 29856 error("W133", initializer, nextop.value, "initializer is forbidden"); | |
| 29857 } | |
| 29858 if (target && !comma && !initializer) { | |
| 29859 checkLeftSideAssign(context, target, nextop); | |
| 29860 } | |
| 29861 | |
| 29862 advance(nextop.value); | |
| 29863 | |
| 29864 // The binding power is variable because for-in statements accept any | |
| 29865 // Expression in this position, while for-of statements are limited to | |
| 29866 // AssignmentExpressions. For example: | |
| 29867 // | |
| 29868 // for ( LeftHandSideExpression in Expression ) Statement | |
| 29869 // for ( LeftHandSideExpression of AssignmentExpression ) Statement | |
| 29870 expression(context, bindingPower); | |
| 29871 advance(")", t); | |
| 29872 | |
| 29873 if (nextop.value === "in" && state.option.forin) { | |
| 29874 state.forinifcheckneeded = true; | |
| 29875 | |
| 29876 if (state.forinifchecks === undefined) { | |
| 29877 state.forinifchecks = []; | |
| 29878 } | |
| 29879 | |
| 29880 // Push a new for-in-if check onto the stack. The type will be modified | |
| 29881 // when the loop's body is parsed and a suitable if statement exists. | |
| 29882 state.forinifchecks.push({ | |
| 29883 type: "(none)" | |
| 29884 }); | |
| 29885 } | |
| 29886 | |
| 29887 state.funct["(breakage)"] += 1; | |
| 29888 state.funct["(loopage)"] += 1; | |
| 29889 | |
| 29890 s = block(context, true, true); | |
| 29891 | |
| 29892 if (nextop.value === "in" && state.option.forin) { | |
| 29893 if (state.forinifchecks && state.forinifchecks.length > 0) { | |
| 29894 var check = state.forinifchecks.pop(); | |
| 29895 | |
| 29896 if (// No if statement or not the first statement in loop body | |
| 29897 s && s.length > 0 && (typeof s[0] !== "object" || s[0].value !== "if") || | |
| 29898 // Positive if statement is not the only one in loop body | |
| 29899 check.type === "(positive)" && s.length > 1 || | |
| 29900 // Negative if statement but no continue | |
| 29901 check.type === "(negative)") { | |
| 29902 warning("W089", this); | |
| 29903 } | |
| 29904 } | |
| 29905 | |
| 29906 // Reset the flag in case no if statement was contained in the loop body | |
| 29907 state.forinifcheckneeded = false; | |
| 29908 } | |
| 29909 | |
| 29910 state.funct["(breakage)"] -= 1; | |
| 29911 state.funct["(loopage)"] -= 1; | |
| 29912 | |
| 29913 } else { | |
| 29914 if (foreachtok) { | |
| 29915 error("E045", foreachtok); | |
| 29916 } | |
| 29917 | |
| 29918 advance(";"); | |
| 29919 if (decl && decl.first && decl.first[0]) { | |
| 29920 if (decl.value === "const" && !decl.hasInitializer) { | |
| 29921 warning("E012", decl, decl.first[0].value); | |
| 29922 } | |
| 29923 | |
| 29924 decl.first.forEach(function(token) { | |
| 29925 state.funct["(scope)"].initialize(token.value); | |
| 29926 }); | |
| 29927 } | |
| 29928 | |
| 29929 // start loopage after the first ; as the next two expressions are executed | |
| 29930 // on every loop | |
| 29931 state.funct["(loopage)"] += 1; | |
| 29932 if (state.tokens.next.id !== ";") { | |
| 29933 checkCondAssignment(expression(context, 0)); | |
| 29934 } | |
| 29935 | |
| 29936 advance(";"); | |
| 29937 if (state.tokens.next.id === ";") { | |
| 29938 error("E021", state.tokens.next, ")", ";"); | |
| 29939 } | |
| 29940 if (state.tokens.next.id !== ")") { | |
| 29941 for (;;) { | |
| 29942 expression(context, 0); | |
| 29943 if (state.tokens.next.id !== ",") { | |
| 29944 break; | |
| 29945 } | |
| 29946 advance(","); | |
| 29947 checkComma(); | |
| 29948 } | |
| 29949 } | |
| 29950 advance(")", t); | |
| 29951 state.funct["(breakage)"] += 1; | |
| 29952 block(context, true, true); | |
| 29953 state.funct["(breakage)"] -= 1; | |
| 29954 state.funct["(loopage)"] -= 1; | |
| 29955 } | |
| 29956 | |
| 29957 // unstack loop blockscope | |
| 29958 if (letscope) { | |
| 29959 state.funct["(scope)"].unstack(); | |
| 29960 } | |
| 29961 return this; | |
| 29962 }).labelled = true; | |
| 29963 | |
| 29964 | |
| 29965 stmt("break", function() { | |
| 29966 var v = state.tokens.next.value; | |
| 29967 | |
| 29968 if (state.tokens.next.identifier && | |
| 29969 sameLine(state.tokens.curr, state.tokens.next)) { | |
| 29970 if (!state.funct["(scope)"].funct.hasLabel(v)) { | |
| 29971 warning("W090", state.tokens.next, v); | |
| 29972 } | |
| 29973 this.first = state.tokens.next; | |
| 29974 advance(); | |
| 29975 } else { | |
| 29976 if (state.funct["(breakage)"] === 0) | |
| 29977 warning("W052", state.tokens.next, this.value); | |
| 29978 } | |
| 29979 | |
| 29980 reachable(this); | |
| 29981 | |
| 29982 return this; | |
| 29983 }).exps = true; | |
| 29984 | |
| 29985 | |
| 29986 stmt("continue", function() { | |
| 29987 var v = state.tokens.next.value; | |
| 29988 | |
| 29989 if (state.funct["(breakage)"] === 0 || !state.funct["(loopage)"]) { | |
| 29990 warning("W052", state.tokens.next, this.value); | |
| 29991 } | |
| 29992 | |
| 29993 if (state.tokens.next.identifier) { | |
| 29994 if (sameLine(state.tokens.curr, state.tokens.next)) { | |
| 29995 if (!state.funct["(scope)"].funct.hasLabel(v)) { | |
| 29996 warning("W090", state.tokens.next, v); | |
| 29997 } | |
| 29998 this.first = state.tokens.next; | |
| 29999 advance(); | |
| 30000 } | |
| 30001 } | |
| 30002 | |
| 30003 reachable(this); | |
| 30004 | |
| 30005 return this; | |
| 30006 }).exps = true; | |
| 30007 | |
| 30008 | |
| 30009 stmt("return", function(context) { | |
| 30010 if (sameLine(this, state.tokens.next)) { | |
| 30011 if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { | |
| 30012 this.first = expression(context, 0); | |
| 30013 | |
| 30014 if (this.first && | |
| 30015 this.first.type === "(punctuator)" && this.first.value === "=" && | |
| 30016 !this.first.paren && !state.option.boss) { | |
| 30017 warning("W093", this.first); | |
| 30018 } | |
| 30019 | |
| 30020 if (state.option.noreturnawait && context & prodParams.async && | |
| 30021 !(context & prodParams.tryClause) && | |
| 30022 this.first.identifier && this.first.value === "await") { | |
| 30023 warning("W146", this.first); | |
| 30024 } | |
| 30025 } | |
| 30026 } else { | |
| 30027 if (state.tokens.next.type === "(punctuator)" && | |
| 30028 ["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) { | |
| 30029 nolinebreak(this); // always warn (Line breaking error) | |
| 30030 } | |
| 30031 } | |
| 30032 | |
| 30033 reachable(this); | |
| 30034 | |
| 30035 return this; | |
| 30036 }).exps = true; | |
| 30037 | |
| 30038 prefix("await", function(context) { | |
| 30039 if (context & prodParams.async) { | |
| 30040 // If the parameters of the current function scope have not been defined, | |
| 30041 // it is because the current expression is contained within the parameter | |
| 30042 // list. | |
| 30043 if (!state.funct["(params)"]) { | |
| 30044 error("E024", this, "await"); | |
| 30045 } | |
| 30046 | |
| 30047 expression(context, 10); | |
| 30048 return this; | |
| 30049 } else { | |
| 30050 this.exps = false; | |
| 30051 return state.syntax["(identifier)"].nud.apply(this, arguments); | |
| 30052 } | |
| 30053 }).exps = true; | |
| 30054 | |
| 30055 (function(asyncSymbol) { | |
| 30056 asyncSymbol.meta = { es5: true, isFutureReservedWord: true, strictOnly: true }; | |
| 30057 asyncSymbol.isFunc = function() { | |
| 30058 var next = state.tokens.next; | |
| 30059 var afterParens; | |
| 30060 | |
| 30061 if (this.line !== next.line) { | |
| 30062 return false; | |
| 30063 } | |
| 30064 | |
| 30065 if (next.id === "function") { | |
| 30066 return true; | |
| 30067 } | |
| 30068 | |
| 30069 if (next.id === "(") { | |
| 30070 afterParens = peekThroughParens(0); | |
| 30071 | |
| 30072 return afterParens.id === "=>"; | |
| 30073 } | |
| 30074 | |
| 30075 if (next.identifier) { | |
| 30076 return peek().id === "=>"; | |
| 30077 } | |
| 30078 | |
| 30079 return false; | |
| 30080 }; | |
| 30081 asyncSymbol.useFud = asyncSymbol.isFunc; | |
| 30082 // async function declaration | |
| 30083 asyncSymbol.fud = function(context) { | |
| 30084 if (!state.inES8()) { | |
| 30085 warning("W119", this, "async functions", "8"); | |
| 30086 } | |
| 30087 context |= prodParams.preAsync; | |
| 30088 context |= prodParams.initial; | |
| 30089 this.func = expression(context, 0); | |
| 30090 this.block = this.func.block; | |
| 30091 this.exps = this.func.exps; | |
| 30092 return this; | |
| 30093 }; | |
| 30094 asyncSymbol.exps = true; | |
| 30095 delete asyncSymbol.reserved; | |
| 30096 }(prefix("async", function(context, rbp) { | |
| 30097 if (this.isFunc(context)) { | |
| 30098 if (!state.inES8()) { | |
| 30099 warning("W119", this, "async functions", "8"); | |
| 30100 } | |
| 30101 | |
| 30102 context |= prodParams.preAsync; | |
| 30103 this.func = expression(context, rbp); | |
| 30104 this.identifier = false; | |
| 30105 return this; | |
| 30106 } | |
| 30107 | |
| 30108 this.exps = false; | |
| 30109 return state.syntax["(identifier)"].nud.apply(this, arguments); | |
| 30110 }))); | |
| 30111 | |
| 30112 (function(yieldSymbol) { | |
| 30113 yieldSymbol.rbp = yieldSymbol.lbp = 25; | |
| 30114 yieldSymbol.exps = true; | |
| 30115 })(prefix("yield", function(context) { | |
| 30116 if (state.inMoz()) { | |
| 30117 return mozYield.call(this, context); | |
| 30118 } | |
| 30119 | |
| 30120 if (!(context & prodParams.yield)) { | |
| 30121 this.exps = false; | |
| 30122 return state.syntax["(identifier)"].nud.apply(this, arguments); | |
| 30123 } | |
| 30124 | |
| 30125 var prev = state.tokens.prev; | |
| 30126 | |
| 30127 // If the parameters of the current function scope have not been defined, | |
| 30128 // it is because the current expression is contained within the parameter | |
| 30129 // list. | |
| 30130 if (!state.funct["(params)"]) { | |
| 30131 error("E024", this, "yield"); | |
| 30132 } | |
| 30133 | |
| 30134 if (!this.beginsStmt && prev.lbp > 30 && !checkPunctuators(prev, ["("])) { | |
| 30135 error("E061", this); | |
| 30136 } | |
| 30137 | |
| 30138 if (!state.inES6()) { | |
| 30139 warning("W104", state.tokens.curr, "yield", "6"); | |
| 30140 } | |
| 30141 state.funct["(yielded)"] = true; | |
| 30142 | |
| 30143 if (state.tokens.next.value === "*") { | |
| 30144 advance("*"); | |
| 30145 } | |
| 30146 | |
| 30147 // Parse operand | |
| 30148 if (state.tokens.curr.value === "*" || sameLine(state.tokens.curr, state.tokens.next)) { | |
| 30149 if (state.tokens.next.nud) { | |
| 30150 | |
| 30151 nobreaknonadjacent(state.tokens.curr, state.tokens.next); | |
| 30152 this.first = expression(context, 10); | |
| 30153 | |
| 30154 if (this.first.type === "(punctuator)" && this.first.value === "=" && | |
| 30155 !this.first.paren && !state.option.boss) { | |
| 30156 warning("W093", this.first); | |
| 30157 } | |
| 30158 } else if (state.tokens.next.led) { | |
| 30159 if (state.tokens.next.id !== ",") { | |
| 30160 error("W017", state.tokens.next); | |
| 30161 } | |
| 30162 } | |
| 30163 } | |
| 30164 | |
| 30165 return this; | |
| 30166 })); | |
| 30167 | |
| 30168 /** | |
| 30169 * Parsing logic for non-standard Mozilla implementation of `yield` | |
| 30170 * expressions. | |
| 30171 */ | |
| 30172 var mozYield = function(context) { | |
| 30173 var prev = state.tokens.prev; | |
| 30174 if (state.inES6(true) && !(context & prodParams.yield)) { | |
| 30175 error("E046", state.tokens.curr, "yield"); | |
| 30176 } | |
| 30177 state.funct["(yielded)"] = true; | |
| 30178 var delegatingYield = false; | |
| 30179 | |
| 30180 if (state.tokens.next.value === "*") { | |
| 30181 delegatingYield = true; | |
| 30182 advance("*"); | |
| 30183 } | |
| 30184 | |
| 30185 if (sameLine(this, state.tokens.next)) { | |
| 30186 if (delegatingYield || | |
| 30187 (state.tokens.next.id !== ";" && !state.option.asi && | |
| 30188 !state.tokens.next.reach && state.tokens.next.nud)) { | |
| 30189 | |
| 30190 nobreaknonadjacent(state.tokens.curr, state.tokens.next); | |
| 30191 this.first = expression(context, 10); | |
| 30192 | |
| 30193 if (this.first.type === "(punctuator)" && this.first.value === "=" && | |
| 30194 !this.first.paren && !state.option.boss) { | |
| 30195 warning("W093", this.first); | |
| 30196 } | |
| 30197 } | |
| 30198 if (state.tokens.next.id !== ")" && | |
| 30199 (prev.lbp > 30 || (!prev.assign && !isEndOfExpr()))) { | |
| 30200 error("E050", this); | |
| 30201 } | |
| 30202 } else if (!state.option.asi) { | |
| 30203 nolinebreak(this); // always warn (Line breaking error) | |
| 30204 } | |
| 30205 return this; | |
| 30206 }; | |
| 30207 | |
| 30208 stmt("throw", function(context) { | |
| 30209 nolinebreak(this); | |
| 30210 this.first = expression(context, 20); | |
| 30211 | |
| 30212 reachable(this); | |
| 30213 | |
| 30214 return this; | |
| 30215 }).exps = true; | |
| 30216 | |
| 30217 stmt("import", function(context) { | |
| 30218 if (!state.funct["(scope)"].block.isGlobal()) { | |
| 30219 error("E053", state.tokens.curr, "Import"); | |
| 30220 } | |
| 30221 | |
| 30222 if (!state.inES6()) { | |
| 30223 warning("W119", state.tokens.curr, "import", "6"); | |
| 30224 } | |
| 30225 | |
| 30226 if (state.tokens.next.type === "(string)") { | |
| 30227 // ModuleSpecifier :: StringLiteral | |
| 30228 advance("(string)"); | |
| 30229 return this; | |
| 30230 } | |
| 30231 | |
| 30232 if (state.tokens.next.identifier) { | |
| 30233 // ImportClause :: ImportedDefaultBinding | |
| 30234 this.name = identifier(context); | |
| 30235 // Import bindings are immutable (see ES6 8.1.1.5.5) | |
| 30236 state.funct["(scope)"].addbinding(this.name, { | |
| 30237 type: "import", | |
| 30238 initialized: true, | |
| 30239 token: state.tokens.curr }); | |
| 30240 | |
| 30241 if (state.tokens.next.value === ",") { | |
| 30242 // ImportClause :: ImportedDefaultBinding , NameSpaceImport | |
| 30243 // ImportClause :: ImportedDefaultBinding , NamedImports | |
| 30244 advance(","); | |
| 30245 // At this point, we intentionally fall through to continue matching | |
| 30246 // either NameSpaceImport or NamedImports. | |
| 30247 // Discussion: | |
| 30248 // https://github.com/jshint/jshint/pull/2144#discussion_r23978406 | |
| 30249 } else { | |
| 30250 advance("from"); | |
| 30251 advance("(string)"); | |
| 30252 return this; | |
| 30253 } | |
| 30254 } | |
| 30255 | |
| 30256 if (state.tokens.next.id === "*") { | |
| 30257 // ImportClause :: NameSpaceImport | |
| 30258 advance("*"); | |
| 30259 advance("as"); | |
| 30260 if (state.tokens.next.identifier) { | |
| 30261 this.name = identifier(context); | |
| 30262 // Import bindings are immutable (see ES6 8.1.1.5.5) | |
| 30263 state.funct["(scope)"].addbinding(this.name, { | |
| 30264 type: "import", | |
| 30265 initialized: true, | |
| 30266 token: state.tokens.curr }); | |
| 30267 } | |
| 30268 } else { | |
| 30269 // ImportClause :: NamedImports | |
| 30270 advance("{"); | |
| 30271 for (;;) { | |
| 30272 if (state.tokens.next.value === "}") { | |
| 30273 advance("}"); | |
| 30274 break; | |
| 30275 } | |
| 30276 var importName; | |
| 30277 if (state.tokens.next.type === "default") { | |
| 30278 importName = "default"; | |
| 30279 advance("default"); | |
| 30280 } else { | |
| 30281 importName = identifier(context); | |
| 30282 } | |
| 30283 if (state.tokens.next.value === "as") { | |
| 30284 advance("as"); | |
| 30285 importName = identifier(context); | |
| 30286 } | |
| 30287 | |
| 30288 // Import bindings are immutable (see ES6 8.1.1.5.5) | |
| 30289 state.funct["(scope)"].addbinding(importName, { | |
| 30290 type: "import", | |
| 30291 initialized: true, | |
| 30292 token: state.tokens.curr }); | |
| 30293 | |
| 30294 if (state.tokens.next.value === ",") { | |
| 30295 advance(","); | |
| 30296 } else if (state.tokens.next.value === "}") { | |
| 30297 advance("}"); | |
| 30298 break; | |
| 30299 } else { | |
| 30300 error("E024", state.tokens.next, state.tokens.next.value); | |
| 30301 break; | |
| 30302 } | |
| 30303 } | |
| 30304 } | |
| 30305 | |
| 30306 // FromClause | |
| 30307 advance("from"); | |
| 30308 advance("(string)"); | |
| 30309 | |
| 30310 // Support for ES2015 modules was released without warning for `import` | |
| 30311 // declarations that lack bindings. Issuing a warning would therefor | |
| 30312 // constitute a breaking change. | |
| 30313 // TODO: enable this warning in JSHint 3 | |
| 30314 // if (hasBindings) { | |
| 30315 // warning("W142", this, "import", moduleSpecifier); | |
| 30316 // } | |
| 30317 | |
| 30318 return this; | |
| 30319 }).exps = true; | |
| 30320 | |
| 30321 stmt("export", function(context) { | |
| 30322 var ok = true; | |
| 30323 var token; | |
| 30324 var identifier; | |
| 30325 var moduleSpecifier; | |
| 30326 context = context | prodParams.export; | |
| 30327 | |
| 30328 if (!state.inES6()) { | |
| 30329 warning("W119", state.tokens.curr, "export", "6"); | |
| 30330 ok = false; | |
| 30331 } | |
| 30332 | |
| 30333 if (!state.funct["(scope)"].block.isGlobal()) { | |
| 30334 error("E053", state.tokens.curr, "Export"); | |
| 30335 ok = false; | |
| 30336 } | |
| 30337 | |
| 30338 if (state.tokens.next.value === "*") { | |
| 30339 // ExportDeclaration :: export * FromClause | |
| 30340 advance("*"); | |
| 30341 advance("from"); | |
| 30342 advance("(string)"); | |
| 30343 return this; | |
| 30344 } | |
| 30345 | |
| 30346 if (state.tokens.next.type === "default") { | |
| 30347 // ExportDeclaration :: | |
| 30348 // export default [lookahead ∉ { function, class }] AssignmentExpression[In] ; | |
| 30349 // export default HoistableDeclaration | |
| 30350 // export default ClassDeclaration | |
| 30351 | |
| 30352 // because the 'name' of a default-exported function is, confusingly, 'default' | |
| 30353 // see https://bocoup.com/blog/whats-in-a-function-name | |
| 30354 state.nameStack.set(state.tokens.next); | |
| 30355 | |
| 30356 advance("default"); | |
| 30357 var exportType = state.tokens.next.id; | |
| 30358 if (exportType === "function") { | |
| 30359 this.block = true; | |
| 30360 advance("function"); | |
| 30361 state.syntax["function"].fud(context); | |
| 30362 } else if (exportType === "async" && peek().id === "function") { | |
| 30363 this.block = true; | |
| 30364 advance("async"); | |
| 30365 advance("function"); | |
| 30366 state.syntax["function"].fud(context | prodParams.preAsync); | |
| 30367 } else if (exportType === "class") { | |
| 30368 this.block = true; | |
| 30369 advance("class"); | |
| 30370 state.syntax["class"].fud(context); | |
| 30371 } else { | |
| 30372 token = expression(context, 10); | |
| 30373 if (token.identifier) { | |
| 30374 identifier = token.value; | |
| 30375 state.funct["(scope)"].setExported(identifier, token); | |
| 30376 } | |
| 30377 } | |
| 30378 return this; | |
| 30379 } | |
| 30380 if (state.tokens.next.value === "{") { | |
| 30381 // ExportDeclaration :: export ExportClause | |
| 30382 advance("{"); | |
| 30383 var exportedTokens = []; | |
| 30384 while (!checkPunctuator(state.tokens.next, "}")) { | |
| 30385 if (!state.tokens.next.identifier) { | |
| 30386 /* istanbul ignore next */ | |
| 30387 error("E030", state.tokens.next, state.tokens.next.value); | |
| 30388 } | |
| 30389 advance(); | |
| 30390 | |
| 30391 exportedTokens.push(state.tokens.curr); | |
| 30392 | |
| 30393 if (state.tokens.next.value === "as") { | |
| 30394 advance("as"); | |
| 30395 if (!state.tokens.next.identifier) { | |
| 30396 /* istanbul ignore next */ | |
| 30397 error("E030", state.tokens.next, state.tokens.next.value); | |
| 30398 } | |
| 30399 advance(); | |
| 30400 } | |
| 30401 | |
| 30402 if (!checkPunctuator(state.tokens.next, "}")) { | |
| 30403 advance(","); | |
| 30404 } | |
| 30405 } | |
| 30406 advance("}"); | |
| 30407 if (state.tokens.next.value === "from") { | |
| 30408 // ExportDeclaration :: export ExportClause FromClause | |
| 30409 advance("from"); | |
| 30410 moduleSpecifier = state.tokens.next; | |
| 30411 advance("(string)"); | |
| 30412 } else if (ok) { | |
| 30413 exportedTokens.forEach(function(token) { | |
| 30414 state.funct["(scope)"].setExported(token.value, token); | |
| 30415 }); | |
| 30416 } | |
| 30417 | |
| 30418 if (exportedTokens.length === 0) { | |
| 30419 if (moduleSpecifier) { | |
| 30420 warning("W142", this, "export", moduleSpecifier.value); | |
| 30421 } else { | |
| 30422 warning("W141", this, "export"); | |
| 30423 } | |
| 30424 } | |
| 30425 | |
| 30426 return this; | |
| 30427 } else if (state.tokens.next.id === "var") { | |
| 30428 // ExportDeclaration :: export VariableStatement | |
| 30429 advance("var"); | |
| 30430 state.tokens.curr.fud(context); | |
| 30431 } else if (state.tokens.next.id === "let") { | |
| 30432 // ExportDeclaration :: export VariableStatement | |
| 30433 advance("let"); | |
| 30434 state.tokens.curr.fud(context); | |
| 30435 } else if (state.tokens.next.id === "const") { | |
| 30436 // ExportDeclaration :: export VariableStatement | |
| 30437 advance("const"); | |
| 30438 state.tokens.curr.fud(context); | |
| 30439 } else if (state.tokens.next.id === "function") { | |
| 30440 // ExportDeclaration :: export Declaration | |
| 30441 this.block = true; | |
| 30442 advance("function"); | |
| 30443 state.syntax["function"].fud(context); | |
| 30444 } else if (state.tokens.next.id === "async" && peek().id === "function") { | |
| 30445 // ExportDeclaration :: export Declaration | |
| 30446 this.block = true; | |
| 30447 advance("async"); | |
| 30448 advance("function"); | |
| 30449 state.syntax["function"].fud(context | prodParams.preAsync); | |
| 30450 } else if (state.tokens.next.id === "class") { | |
| 30451 // ExportDeclaration :: export Declaration | |
| 30452 this.block = true; | |
| 30453 advance("class"); | |
| 30454 state.syntax["class"].fud(context); | |
| 30455 } else { | |
| 30456 /* istanbul ignore next */ | |
| 30457 error("E024", state.tokens.next, state.tokens.next.value); | |
| 30458 } | |
| 30459 | |
| 30460 return this; | |
| 30461 }).exps = true; | |
| 30462 | |
| 30463 /** | |
| 30464 * Determine if SuperCall or SuperProperty may be used in the current context | |
| 30465 * (as described by the provided "functor" object). | |
| 30466 * | |
| 30467 * @param {string} type - one of "property" or "call" | |
| 30468 * @param {object} funct - a "functor" object describing the current function | |
| 30469 * context | |
| 30470 * | |
| 30471 * @returns {boolean} | |
| 30472 */ | |
| 30473 function supportsSuper(type, funct) { | |
| 30474 if (type === "call" && funct["(async)"]) { | |
| 30475 return false; | |
| 30476 } | |
| 30477 | |
| 30478 if (type === "property" && funct["(method)"]) { | |
| 30479 return true; | |
| 30480 } | |
| 30481 | |
| 30482 if (type === "call" && funct["(statement)"] && | |
| 30483 funct["(statement)"].id === "class") { | |
| 30484 return true; | |
| 30485 } | |
| 30486 | |
| 30487 if (funct["(arrow)"]) { | |
| 30488 return supportsSuper(type, funct["(context)"]); | |
| 30489 } | |
| 30490 | |
| 30491 return false; | |
| 30492 } | |
| 30493 | |
| 30494 var superNud = function() { | |
| 30495 var next = state.tokens.next; | |
| 30496 | |
| 30497 if (checkPunctuators(next, ["[", "."])) { | |
| 30498 if (!supportsSuper("property", state.funct)) { | |
| 30499 error("E063", this); | |
| 30500 } | |
| 30501 } else if (checkPunctuator(next, "(")) { | |
| 30502 if (!supportsSuper("call", state.funct)) { | |
| 30503 error("E064", this); | |
| 30504 } | |
| 30505 } else { | |
| 30506 error("E024", next, next.value || next.id); | |
| 30507 } | |
| 30508 | |
| 30509 return this; | |
| 30510 }; | |
| 30511 | |
| 30512 // Future Reserved Words | |
| 30513 | |
| 30514 FutureReservedWord("abstract"); | |
| 30515 FutureReservedWord("boolean"); | |
| 30516 FutureReservedWord("byte"); | |
| 30517 FutureReservedWord("char"); | |
| 30518 FutureReservedWord("double"); | |
| 30519 FutureReservedWord("enum", { es5: true }); | |
| 30520 FutureReservedWord("export", { es5: true }); | |
| 30521 FutureReservedWord("extends", { es5: true }); | |
| 30522 FutureReservedWord("final"); | |
| 30523 FutureReservedWord("float"); | |
| 30524 FutureReservedWord("goto"); | |
| 30525 FutureReservedWord("implements", { es5: true, strictOnly: true }); | |
| 30526 FutureReservedWord("import", { es5: true }); | |
| 30527 FutureReservedWord("int"); | |
| 30528 FutureReservedWord("interface", { es5: true, strictOnly: true }); | |
| 30529 FutureReservedWord("long"); | |
| 30530 FutureReservedWord("native"); | |
| 30531 FutureReservedWord("package", { es5: true, strictOnly: true }); | |
| 30532 FutureReservedWord("private", { es5: true, strictOnly: true }); | |
| 30533 FutureReservedWord("protected", { es5: true, strictOnly: true }); | |
| 30534 FutureReservedWord("public", { es5: true, strictOnly: true }); | |
| 30535 FutureReservedWord("short"); | |
| 30536 FutureReservedWord("static", { es5: true, strictOnly: true }); | |
| 30537 FutureReservedWord("synchronized"); | |
| 30538 FutureReservedWord("transient"); | |
| 30539 FutureReservedWord("volatile"); | |
| 30540 | |
| 30541 // this function is used to determine whether a squarebracket or a curlybracket | |
| 30542 // expression is a comprehension array, destructuring assignment or a json value. | |
| 30543 | |
| 30544 var lookupBlockType = function() { | |
| 30545 var pn, pn1, prev; | |
| 30546 var i = -1; | |
| 30547 var bracketStack = 0; | |
| 30548 var ret = {}; | |
| 30549 if (checkPunctuators(state.tokens.curr, ["[", "{"])) { | |
| 30550 bracketStack += 1; | |
| 30551 } | |
| 30552 do { | |
| 30553 prev = i === -1 ? state.tokens.curr : pn; | |
| 30554 pn = i === -1 ? state.tokens.next : peek(i); | |
| 30555 pn1 = peek(i + 1); | |
| 30556 i = i + 1; | |
| 30557 if (checkPunctuators(pn, ["[", "{"])) { | |
| 30558 bracketStack += 1; | |
| 30559 } else if (checkPunctuators(pn, ["]", "}"])) { | |
| 30560 bracketStack -= 1; | |
| 30561 } | |
| 30562 if (bracketStack === 1 && pn.identifier && pn.value === "for" && | |
| 30563 !checkPunctuator(prev, ".")) { | |
| 30564 ret.isCompArray = true; | |
| 30565 ret.notJson = true; | |
| 30566 break; | |
| 30567 } | |
| 30568 if (bracketStack === 0 && checkPunctuators(pn, ["}", "]"])) { | |
| 30569 if (pn1.value === "=") { | |
| 30570 ret.isDestAssign = true; | |
| 30571 ret.notJson = true; | |
| 30572 break; | |
| 30573 } else if (pn1.value === ".") { | |
| 30574 ret.notJson = true; | |
| 30575 break; | |
| 30576 } | |
| 30577 } | |
| 30578 if (checkPunctuator(pn, ";")) { | |
| 30579 ret.notJson = true; | |
| 30580 } | |
| 30581 } while (bracketStack > 0 && pn.id !== "(end)"); | |
| 30582 return ret; | |
| 30583 }; | |
| 30584 | |
| 30585 /** | |
| 30586 * Update an object used to track property names within object initializers | |
| 30587 * and class bodies. Produce warnings in response to duplicated names. | |
| 30588 * | |
| 30589 * @param {object} props - a collection of all properties of the object or | |
| 30590 * class to which the current property is being | |
| 30591 * assigned | |
| 30592 * @param {string} name - the property name | |
| 30593 * @param {object} tkn - the token defining the property | |
| 30594 * @param {boolean} [isClass] - whether the accessor is part of an ES6 Class | |
| 30595 * definition | |
| 30596 * @param {boolean} [isStatic] - whether the accessor is a static method | |
| 30597 * @param {boolean} [isComputed] - whether the property is a computed expression like [Symbol.iterator] | |
| 30598 */ | |
| 30599 function saveProperty(props, name, tkn, isClass, isStatic, isComputed) { | |
| 30600 if (tkn.identifier) { | |
| 30601 name = tkn.value; | |
| 30602 } | |
| 30603 var key = name; | |
| 30604 if (isClass && isStatic) { | |
| 30605 key = "static " + name; | |
| 30606 } | |
| 30607 | |
| 30608 if (props[key] && name !== "__proto__" && !isComputed) { | |
| 30609 var msg = ["key", "class method", "static class method"]; | |
| 30610 msg = msg[(isClass || false) + (isStatic || false)]; | |
| 30611 warning("W075", state.tokens.next, msg, name); | |
| 30612 } else { | |
| 30613 props[key] = Object.create(null); | |
| 30614 } | |
| 30615 | |
| 30616 props[key].basic = true; | |
| 30617 props[key].basictkn = tkn; | |
| 30618 } | |
| 30619 | |
| 30620 /** | |
| 30621 * Update an object used to track property names within object initializers | |
| 30622 * and class bodies. Produce warnings in response to duplicated names. | |
| 30623 * | |
| 30624 * @param {string} accessorType - Either "get" or "set" | |
| 30625 * @param {object} props - a collection of all properties of the object or | |
| 30626 * class to which the current accessor is being | |
| 30627 * assigned | |
| 30628 * @param {object} tkn - the identifier token representing the accessor name | |
| 30629 * @param {boolean} [isClass] - whether the accessor is part of an ES6 Class | |
| 30630 * definition | |
| 30631 * @param {boolean} [isStatic] - whether the accessor is a static method | |
| 30632 */ | |
| 30633 function saveAccessor(accessorType, props, name, tkn, isClass, isStatic) { | |
| 30634 var flagName = accessorType === "get" ? "getterToken" : "setterToken"; | |
| 30635 var key = name; | |
| 30636 state.tokens.curr.accessorType = accessorType; | |
| 30637 state.nameStack.set(tkn); | |
| 30638 if (isClass && isStatic) { | |
| 30639 key = "static " + name; | |
| 30640 } | |
| 30641 | |
| 30642 if (props[key]) { | |
| 30643 if ((props[key].basic || props[key][flagName]) && name !== "__proto__") { | |
| 30644 var msg = ""; | |
| 30645 if (isClass) { | |
| 30646 if (isStatic) { | |
| 30647 msg += "static "; | |
| 30648 } | |
| 30649 msg += accessorType + "ter method"; | |
| 30650 } else { | |
| 30651 msg = "key"; | |
| 30652 } | |
| 30653 warning("W075", state.tokens.next, msg, name); | |
| 30654 } | |
| 30655 } else { | |
| 30656 props[key] = Object.create(null); | |
| 30657 } | |
| 30658 | |
| 30659 props[key][flagName] = tkn; | |
| 30660 if (isStatic) { | |
| 30661 props[key].static = true; | |
| 30662 } | |
| 30663 } | |
| 30664 | |
| 30665 /** | |
| 30666 * Parse a computed property name within object initializers and class bodies | |
| 30667 * as introduced by ES2015. For example: | |
| 30668 * | |
| 30669 * void { | |
| 30670 * [object.method()]: null | |
| 30671 * }; | |
| 30672 * | |
| 30673 * @param {number} context - the parsing context | |
| 30674 * | |
| 30675 * @returns {object} - the token value that describes the expression which | |
| 30676 * defines the property name | |
| 30677 */ | |
| 30678 function computedPropertyName(context) { | |
| 30679 advance("["); | |
| 30680 | |
| 30681 // Explicitly reclassify token as a delimeter to prevent its later | |
| 30682 // interpretation as an "infix" operator. | |
| 30683 state.tokens.curr.delim = true; | |
| 30684 state.tokens.curr.lbp = 0; | |
| 30685 | |
| 30686 if (!state.inES6()) { | |
| 30687 warning("W119", state.tokens.curr, "computed property names", "6"); | |
| 30688 } | |
| 30689 var value = expression(context & ~prodParams.noin, 10); | |
| 30690 advance("]"); | |
| 30691 return value; | |
| 30692 } | |
| 30693 | |
| 30694 /** | |
| 30695 * Test whether a given token is a punctuator whose `value` property matches | |
| 30696 * one of the specified values. This function explicitly verifies the token's | |
| 30697 * `type` property so that like-valued string literals (e.g. `";"`) do not | |
| 30698 * produce false positives. | |
| 30699 * | |
| 30700 * @param {Token} token | |
| 30701 * @param {Array.<string>} values | |
| 30702 * | |
| 30703 * @returns {boolean} | |
| 30704 */ | |
| 30705 function checkPunctuators(token, values) { | |
| 30706 if (token.type === "(punctuator)") { | |
| 30707 return _.includes(values, token.value); | |
| 30708 } | |
| 30709 return false; | |
| 30710 } | |
| 30711 | |
| 30712 /** | |
| 30713 * Test whether a given token is a punctuator whose `value` property matches | |
| 30714 * the specified value. This function explicitly verifies the token's `type` | |
| 30715 * property so that like-valued string literals (e.g. `";"`) do not produce | |
| 30716 * false positives. | |
| 30717 * | |
| 30718 * @param {Token} token | |
| 30719 * @param {string} value | |
| 30720 * | |
| 30721 * @returns {boolean} | |
| 30722 */ | |
| 30723 function checkPunctuator(token, value) { | |
| 30724 return token.type === "(punctuator)" && token.value === value; | |
| 30725 } | |
| 30726 | |
| 30727 // Check whether this function has been reached for a destructuring assign with undeclared values | |
| 30728 function destructuringAssignOrJsonValue(context) { | |
| 30729 // lookup for the assignment (ECMAScript 6 only) | |
| 30730 // if it has semicolons, it is a block, so go parse it as a block | |
| 30731 // or it's not a block, but there are assignments, check for undeclared variables | |
| 30732 | |
| 30733 var block = lookupBlockType(); | |
| 30734 if (block.notJson) { | |
| 30735 if (!state.inES6() && block.isDestAssign) { | |
| 30736 /* istanbul ignore next */ | |
| 30737 warning("W104", state.tokens.curr, "destructuring assignment", "6"); | |
| 30738 } | |
| 30739 statements(context); | |
| 30740 // otherwise parse json value | |
| 30741 } else { | |
| 30742 state.option.laxbreak = true; | |
| 30743 state.jsonMode = true; | |
| 30744 jsonValue(); | |
| 30745 } | |
| 30746 } | |
| 30747 | |
| 30748 /** | |
| 30749 * Parse and define the three states of a list comprehension in order to | |
| 30750 * avoid defining global variables, but keeping them to the list | |
| 30751 * comprehension scope only. The order of the states are as follows: | |
| 30752 * | |
| 30753 * - "use" - which will be the returned iterative part of the list | |
| 30754 * comprehension | |
| 30755 * - "define" - which will define the variables local to the list | |
| 30756 * comprehension | |
| 30757 * - "filter" - which will help filter out values | |
| 30758 */ | |
| 30759 var arrayComprehension = function() { | |
| 30760 var CompArray = function() { | |
| 30761 this.mode = "use"; | |
| 30762 this.variables = []; | |
| 30763 }; | |
| 30764 var _carrays = []; | |
| 30765 var _current; | |
| 30766 function declare(v) { | |
| 30767 var l = _current.variables.filter(function(elt) { | |
| 30768 // if it has, change its undef state | |
| 30769 if (elt.value === v) { | |
| 30770 elt.undef = false; | |
| 30771 return v; | |
| 30772 } | |
| 30773 }).length; | |
| 30774 return l !== 0; | |
| 30775 } | |
| 30776 function use(v) { | |
| 30777 var l = _current.variables.filter(function(elt) { | |
| 30778 // and if it has been defined | |
| 30779 if (elt.value === v && !elt.undef) { | |
| 30780 if (elt.unused === true) { | |
| 30781 elt.unused = false; | |
| 30782 } | |
| 30783 return v; | |
| 30784 } | |
| 30785 }).length; | |
| 30786 // otherwise we warn about it | |
| 30787 return (l === 0); | |
| 30788 } | |
| 30789 return { stack: function() { | |
| 30790 _current = new CompArray(); | |
| 30791 _carrays.push(_current); | |
| 30792 }, | |
| 30793 unstack: function() { | |
| 30794 _current.variables.filter(function(v) { | |
| 30795 if (v.unused) | |
| 30796 warning("W098", v.token, v.token.raw_text || v.value); | |
| 30797 if (v.undef) | |
| 30798 state.funct["(scope)"].block.use(v.value, v.token); | |
| 30799 }); | |
| 30800 _carrays.splice(-1, 1); | |
| 30801 _current = _carrays[_carrays.length - 1]; | |
| 30802 }, | |
| 30803 setState: function(s) { | |
| 30804 if (_.includes(["use", "define", "generate", "filter"], s)) | |
| 30805 _current.mode = s; | |
| 30806 }, | |
| 30807 check: function(v) { | |
| 30808 if (!_current) { | |
| 30809 return; | |
| 30810 } | |
| 30811 // When we are in "use" state of the list comp, we enqueue that var | |
| 30812 if (_current && _current.mode === "use") { | |
| 30813 if (use(v)) { | |
| 30814 _current.variables.push({ | |
| 30815 token: state.tokens.curr, | |
| 30816 value: v, | |
| 30817 undef: true, | |
| 30818 unused: false | |
| 30819 }); | |
| 30820 } | |
| 30821 return true; | |
| 30822 // When we are in "define" state of the list comp, | |
| 30823 } else if (_current && _current.mode === "define") { | |
| 30824 // check if the variable has been used previously | |
| 30825 if (!declare(v)) { | |
| 30826 _current.variables.push({ | |
| 30827 token: state.tokens.curr, | |
| 30828 value: v, | |
| 30829 undef: false, | |
| 30830 unused: true | |
| 30831 }); | |
| 30832 } | |
| 30833 return true; | |
| 30834 // When we are in the "generate" state of the list comp, | |
| 30835 } else if (_current && _current.mode === "generate") { | |
| 30836 state.funct["(scope)"].block.use(v, state.tokens.curr); | |
| 30837 return true; | |
| 30838 // When we are in "filter" state, | |
| 30839 } else if (_current && _current.mode === "filter") { | |
| 30840 // we check whether current variable has been declared | |
| 30841 if (use(v)) { | |
| 30842 // if not we warn about it | |
| 30843 /* istanbul ignore next */ | |
| 30844 state.funct["(scope)"].block.use(v, state.tokens.curr); | |
| 30845 } | |
| 30846 return true; | |
| 30847 } | |
| 30848 /* istanbul ignore next */ | |
| 30849 return false; | |
| 30850 } | |
| 30851 }; | |
| 30852 }; | |
| 30853 | |
| 30854 | |
| 30855 /** | |
| 30856 * Parse input according to the JSON format. | |
| 30857 * | |
| 30858 * http://json.org/ | |
| 30859 */ | |
| 30860 function jsonValue() { | |
| 30861 function jsonObject() { | |
| 30862 var o = {}, t = state.tokens.next; | |
| 30863 advance("{"); | |
| 30864 if (state.tokens.next.id !== "}") { | |
| 30865 for (;;) { | |
| 30866 if (state.tokens.next.id === "(end)") { | |
| 30867 error("E026", state.tokens.next, t.line); | |
| 30868 } else if (state.tokens.next.id === "}") { | |
| 30869 warning("W094", state.tokens.curr); | |
| 30870 break; | |
| 30871 } else if (state.tokens.next.id === ",") { | |
| 30872 error("E028", state.tokens.next); | |
| 30873 } else if (state.tokens.next.id !== "(string)") { | |
| 30874 warning("W095", state.tokens.next, state.tokens.next.value); | |
| 30875 } | |
| 30876 if (o[state.tokens.next.value] === true) { | |
| 30877 warning("W075", state.tokens.next, "key", state.tokens.next.value); | |
| 30878 } else if ((state.tokens.next.value === "__proto__" && | |
| 30879 !state.option.proto) || (state.tokens.next.value === "__iterator__" && | |
| 30880 !state.option.iterator)) { | |
| 30881 warning("W096", state.tokens.next, state.tokens.next.value); | |
| 30882 } else { | |
| 30883 o[state.tokens.next.value] = true; | |
| 30884 } | |
| 30885 advance(); | |
| 30886 advance(":"); | |
| 30887 jsonValue(); | |
| 30888 if (state.tokens.next.id !== ",") { | |
| 30889 break; | |
| 30890 } | |
| 30891 advance(","); | |
| 30892 } | |
| 30893 } | |
| 30894 advance("}"); | |
| 30895 } | |
| 30896 | |
| 30897 function jsonArray() { | |
| 30898 var t = state.tokens.next; | |
| 30899 advance("["); | |
| 30900 if (state.tokens.next.id !== "]") { | |
| 30901 for (;;) { | |
| 30902 if (state.tokens.next.id === "(end)") { | |
| 30903 error("E027", state.tokens.next, t.line); | |
| 30904 } else if (state.tokens.next.id === "]") { | |
| 30905 warning("W094", state.tokens.curr); | |
| 30906 break; | |
| 30907 } else if (state.tokens.next.id === ",") { | |
| 30908 error("E028", state.tokens.next); | |
| 30909 } | |
| 30910 jsonValue(); | |
| 30911 if (state.tokens.next.id !== ",") { | |
| 30912 break; | |
| 30913 } | |
| 30914 advance(","); | |
| 30915 } | |
| 30916 } | |
| 30917 advance("]"); | |
| 30918 } | |
| 30919 | |
| 30920 switch (state.tokens.next.id) { | |
| 30921 case "{": | |
| 30922 jsonObject(); | |
| 30923 break; | |
| 30924 case "[": | |
| 30925 jsonArray(); | |
| 30926 break; | |
| 30927 case "true": | |
| 30928 case "false": | |
| 30929 case "null": | |
| 30930 case "(number)": | |
| 30931 case "(string)": | |
| 30932 advance(); | |
| 30933 break; | |
| 30934 case "-": | |
| 30935 advance("-"); | |
| 30936 advance("(number)"); | |
| 30937 break; | |
| 30938 default: | |
| 30939 error("E003", state.tokens.next); | |
| 30940 } | |
| 30941 } | |
| 30942 | |
| 30943 /** | |
| 30944 * Lint dynamically-evaluated code, appending any resulting errors/warnings | |
| 30945 * into the global `errors` array. | |
| 30946 * | |
| 30947 * @param {array} internals - collection of "internals" objects describing | |
| 30948 * string tokens that contain evaluated code | |
| 30949 * @param {object} options - linting options to apply | |
| 30950 * @param {object} globals - globally-defined bindings for the evaluated code | |
| 30951 */ | |
| 30952 function lintEvalCode(internals, options, globals) { | |
| 30953 var priorErrorCount, idx, jdx, internal; | |
| 30954 | |
| 30955 for (idx = 0; idx < internals.length; idx += 1) { | |
| 30956 internal = internals[idx]; | |
| 30957 options.scope = internal.elem; | |
| 30958 priorErrorCount = JSHINT.errors.length; | |
| 30959 | |
| 30960 itself(internal.code, options, globals); | |
| 30961 | |
| 30962 for (jdx = priorErrorCount; jdx < JSHINT.errors.length; jdx += 1) { | |
| 30963 JSHINT.errors[jdx].line += internal.token.line - 1; | |
| 30964 } | |
| 30965 } | |
| 30966 } | |
| 30967 | |
| 30968 var escapeRegex = function(str) { | |
| 30969 return str.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&"); | |
| 30970 }; | |
| 30971 | |
| 30972 // The actual JSHINT function itself. | |
| 30973 var itself = function(s, o, g) { | |
| 30974 var x, reIgnoreStr, reIgnore; | |
| 30975 var optionKeys, newOptionObj, newIgnoredObj; | |
| 30976 | |
| 30977 o = _.clone(o); | |
| 30978 state.reset(); | |
| 30979 newOptionObj = state.option; | |
| 30980 newIgnoredObj = state.ignored; | |
| 30981 | |
| 30982 if (o && o.scope) { | |
| 30983 JSHINT.scope = o.scope; | |
| 30984 } else { | |
| 30985 JSHINT.errors = []; | |
| 30986 JSHINT.internals = []; | |
| 30987 JSHINT.blacklist = {}; | |
| 30988 JSHINT.scope = "(main)"; | |
| 30989 } | |
| 30990 | |
| 30991 predefined = Object.create(null); | |
| 30992 combine(predefined, vars.ecmaIdentifiers[3]); | |
| 30993 combine(predefined, vars.reservedVars); | |
| 30994 | |
| 30995 declared = Object.create(null); | |
| 30996 var exported = Object.create(null); // Variables that live outside the current file | |
| 30997 | |
| 30998 function each(obj, cb) { | |
| 30999 if (!obj) | |
| 31000 return; | |
| 31001 | |
| 31002 if (!Array.isArray(obj) && typeof obj === "object") | |
| 31003 obj = Object.keys(obj); | |
| 31004 | |
| 31005 obj.forEach(cb); | |
| 31006 } | |
| 31007 | |
| 31008 if (o) { | |
| 31009 | |
| 31010 each([o.predef, o.globals], function(dict) { | |
| 31011 each(dict, function(item) { | |
| 31012 var slice, prop; | |
| 31013 | |
| 31014 if (item[0] === "-") { | |
| 31015 slice = item.slice(1); | |
| 31016 JSHINT.blacklist[slice] = slice; | |
| 31017 // remove from predefined if there | |
| 31018 delete predefined[slice]; | |
| 31019 } else { | |
| 31020 prop = Object.getOwnPropertyDescriptor(dict, item); | |
| 31021 predefined[item] = prop ? prop.value : false; | |
| 31022 } | |
| 31023 }); | |
| 31024 }); | |
| 31025 | |
| 31026 each(o.exported || null, function(item) { | |
| 31027 exported[item] = true; | |
| 31028 }); | |
| 31029 | |
| 31030 delete o.predef; | |
| 31031 delete o.exported; | |
| 31032 | |
| 31033 optionKeys = Object.keys(o); | |
| 31034 for (x = 0; x < optionKeys.length; x++) { | |
| 31035 if (/^-W\d{3}$/g.test(optionKeys[x])) { | |
| 31036 newIgnoredObj[optionKeys[x].slice(1)] = true; | |
| 31037 } else { | |
| 31038 var optionKey = optionKeys[x]; | |
| 31039 newOptionObj[optionKey] = o[optionKey]; | |
| 31040 } | |
| 31041 } | |
| 31042 } | |
| 31043 | |
| 31044 state.option = newOptionObj; | |
| 31045 state.ignored = newIgnoredObj; | |
| 31046 | |
| 31047 state.option.indent = state.option.indent || 4; | |
| 31048 state.option.maxerr = state.option.maxerr || 50; | |
| 31049 | |
| 31050 indent = 1; | |
| 31051 | |
| 31052 var scopeManagerInst = scopeManager(state, predefined, exported, declared); | |
| 31053 scopeManagerInst.on("warning", function(ev) { | |
| 31054 warning.apply(null, [ ev.code, ev.token].concat(ev.data)); | |
| 31055 }); | |
| 31056 | |
| 31057 scopeManagerInst.on("error", function(ev) { | |
| 31058 /* istanbul ignore next */ | |
| 31059 error.apply(null, [ ev.code, ev.token ].concat(ev.data)); | |
| 31060 }); | |
| 31061 | |
| 31062 state.funct = functor("(global)", null, { | |
| 31063 "(global)" : true, | |
| 31064 "(scope)" : scopeManagerInst, | |
| 31065 "(comparray)" : arrayComprehension(), | |
| 31066 "(metrics)" : createMetrics(state.tokens.next) | |
| 31067 }); | |
| 31068 | |
| 31069 functions = [state.funct]; | |
| 31070 member = {}; | |
| 31071 membersOnly = null; | |
| 31072 inblock = false; | |
| 31073 lookahead = []; | |
| 31074 | |
| 31075 if (!isString(s) && !Array.isArray(s)) { | |
| 31076 errorAt("E004", 0); | |
| 31077 return false; | |
| 31078 } | |
| 31079 | |
| 31080 api = { | |
| 31081 get isJSON() { | |
| 31082 /* istanbul ignore next */ | |
| 31083 return state.jsonMode; | |
| 31084 }, | |
| 31085 | |
| 31086 getOption: function(name) { | |
| 31087 return state.option[name] || null; | |
| 31088 }, | |
| 31089 | |
| 31090 getCache: function(name) { | |
| 31091 return state.cache[name]; | |
| 31092 }, | |
| 31093 | |
| 31094 setCache: function(name, value) { | |
| 31095 state.cache[name] = value; | |
| 31096 }, | |
| 31097 | |
| 31098 warn: function(code, data) { | |
| 31099 warningAt.apply(null, [ code, data.line, data.char ].concat(data.data)); | |
| 31100 }, | |
| 31101 | |
| 31102 on: function(names, listener) { | |
| 31103 names.split(" ").forEach(function(name) { | |
| 31104 emitter.on(name, listener); | |
| 31105 }.bind(this)); | |
| 31106 } | |
| 31107 }; | |
| 31108 | |
| 31109 emitter.removeAllListeners(); | |
| 31110 (extraModules || []).forEach(function(func) { | |
| 31111 func(api); | |
| 31112 }); | |
| 31113 | |
| 31114 state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"]; | |
| 31115 if (o && o.ignoreDelimiters) { | |
| 31116 | |
| 31117 if (!Array.isArray(o.ignoreDelimiters)) { | |
| 31118 /* istanbul ignore next */ | |
| 31119 o.ignoreDelimiters = [o.ignoreDelimiters]; | |
| 31120 } | |
| 31121 | |
| 31122 o.ignoreDelimiters.forEach(function(delimiterPair) { | |
| 31123 if (!delimiterPair.start || !delimiterPair.end) | |
| 31124 return; | |
| 31125 | |
| 31126 reIgnoreStr = escapeRegex(delimiterPair.start) + | |
| 31127 "[\\s\\S]*?" + | |
| 31128 escapeRegex(delimiterPair.end); | |
| 31129 | |
| 31130 reIgnore = new RegExp(reIgnoreStr, "ig"); | |
| 31131 | |
| 31132 s = s.replace(reIgnore, function(match) { | |
| 31133 return match.replace(/./g, " "); | |
| 31134 }); | |
| 31135 }); | |
| 31136 } | |
| 31137 | |
| 31138 lex = new Lexer(s); | |
| 31139 | |
| 31140 lex.on("warning", function(ev) { | |
| 31141 warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data)); | |
| 31142 }); | |
| 31143 | |
| 31144 lex.on("error", function(ev) { | |
| 31145 errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data)); | |
| 31146 }); | |
| 31147 | |
| 31148 lex.on("fatal", function(ev) { | |
| 31149 quit("E041", ev); | |
| 31150 }); | |
| 31151 | |
| 31152 lex.on("Identifier", function(ev) { | |
| 31153 emitter.emit("Identifier", ev); | |
| 31154 }); | |
| 31155 | |
| 31156 lex.on("String", function(ev) { | |
| 31157 emitter.emit("String", ev); | |
| 31158 }); | |
| 31159 | |
| 31160 lex.on("Number", function(ev) { | |
| 31161 emitter.emit("Number", ev); | |
| 31162 }); | |
| 31163 | |
| 31164 // Check options | |
| 31165 var name; | |
| 31166 for (name in o) { | |
| 31167 if (_.has(o, name)) { | |
| 31168 checkOption(name, true, state.tokens.curr); | |
| 31169 } | |
| 31170 } | |
| 31171 if (o) { | |
| 31172 for (name in o.unstable) { | |
| 31173 if (_.has(o.unstable, name)) { | |
| 31174 checkOption(name, false, state.tokens.curr); | |
| 31175 } | |
| 31176 } | |
| 31177 } | |
| 31178 | |
| 31179 try { | |
| 31180 applyOptions(); | |
| 31181 | |
| 31182 // combine the passed globals after we've assumed all our options | |
| 31183 combine(predefined, g || {}); | |
| 31184 | |
| 31185 //reset values | |
| 31186 checkComma.first = true; | |
| 31187 | |
| 31188 advance(); | |
| 31189 switch (state.tokens.next.id) { | |
| 31190 case "{": | |
| 31191 case "[": | |
| 31192 destructuringAssignOrJsonValue(0); | |
| 31193 break; | |
| 31194 default: | |
| 31195 directives(); | |
| 31196 | |
| 31197 if (state.directive["use strict"]) { | |
| 31198 if (!state.allowsGlobalUsd()) { | |
| 31199 warning("W097", state.tokens.prev); | |
| 31200 } | |
| 31201 } | |
| 31202 | |
| 31203 statements(0); | |
| 31204 } | |
| 31205 | |
| 31206 if (state.tokens.next.id !== "(end)") { | |
| 31207 quit("E041", state.tokens.curr); | |
| 31208 } | |
| 31209 | |
| 31210 state.funct["(scope)"].unstack(); | |
| 31211 | |
| 31212 } catch (err) { | |
| 31213 if (err && err.name === "JSHintError") { | |
| 31214 var nt = state.tokens.next || {}; | |
| 31215 JSHINT.errors.push({ | |
| 31216 scope : "(main)", | |
| 31217 raw : err.raw, | |
| 31218 code : err.code, | |
| 31219 reason : err.reason, | |
| 31220 line : err.line || nt.line, | |
| 31221 character : err.character || nt.from | |
| 31222 }); | |
| 31223 } else { | |
| 31224 /* istanbul ignore next */ | |
| 31225 throw err; | |
| 31226 } | |
| 31227 } | |
| 31228 | |
| 31229 // Loop over the listed "internals", and check them as well. | |
| 31230 if (JSHINT.scope === "(main)") { | |
| 31231 lintEvalCode(JSHINT.internals, o || {}, g); | |
| 31232 } | |
| 31233 | |
| 31234 return JSHINT.errors.length === 0; | |
| 31235 }; | |
| 31236 | |
| 31237 // Modules. | |
| 31238 itself.addModule = function(func) { | |
| 31239 extraModules.push(func); | |
| 31240 }; | |
| 31241 | |
| 31242 itself.addModule(style.register); | |
| 31243 | |
| 31244 // Data summary. | |
| 31245 itself.data = function() { | |
| 31246 var data = { | |
| 31247 functions: [], | |
| 31248 options: state.option | |
| 31249 }; | |
| 31250 | |
| 31251 var fu, f, i, n, globals; | |
| 31252 | |
| 31253 if (itself.errors.length) { | |
| 31254 data.errors = itself.errors; | |
| 31255 } | |
| 31256 | |
| 31257 if (state.jsonMode) { | |
| 31258 /* istanbul ignore next */ | |
| 31259 data.json = true; | |
| 31260 } | |
| 31261 | |
| 31262 var impliedGlobals = state.funct["(scope)"].getImpliedGlobals(); | |
| 31263 if (impliedGlobals.length > 0) { | |
| 31264 data.implieds = impliedGlobals; | |
| 31265 } | |
| 31266 | |
| 31267 globals = state.funct["(scope)"].getUsedOrDefinedGlobals(); | |
| 31268 if (globals.length > 0) { | |
| 31269 data.globals = globals; | |
| 31270 } | |
| 31271 | |
| 31272 for (i = 1; i < functions.length; i += 1) { | |
| 31273 f = functions[i]; | |
| 31274 fu = {}; | |
| 31275 | |
| 31276 fu.name = f["(name)"]; | |
| 31277 fu.param = f["(params)"]; | |
| 31278 fu.line = f["(line)"]; | |
| 31279 fu.character = f["(character)"]; | |
| 31280 fu.last = f["(last)"]; | |
| 31281 fu.lastcharacter = f["(lastcharacter)"]; | |
| 31282 | |
| 31283 fu.metrics = { | |
| 31284 complexity: f["(metrics)"].ComplexityCount, | |
| 31285 parameters: f["(metrics)"].arity, | |
| 31286 statements: f["(metrics)"].statementCount | |
| 31287 }; | |
| 31288 | |
| 31289 data.functions.push(fu); | |
| 31290 } | |
| 31291 | |
| 31292 var unuseds = state.funct["(scope)"].getUnuseds(); | |
| 31293 if (unuseds.length > 0) { | |
| 31294 data.unused = unuseds; | |
| 31295 } | |
| 31296 | |
| 31297 for (n in member) { | |
| 31298 if (typeof member[n] === "number") { | |
| 31299 data.member = member; | |
| 31300 break; | |
| 31301 } | |
| 31302 } | |
| 31303 | |
| 31304 return data; | |
| 31305 }; | |
| 31306 | |
| 31307 itself.jshint = itself; | |
| 31308 | |
| 31309 return itself; | |
| 31310 }()); | |
| 31311 | |
| 31312 // Make JSHINT a Node module, if possible. | |
| 31313 if (typeof exports === "object" && exports) { | |
| 31314 exports.JSHINT = JSHINT; | |
| 31315 } | |
| 31316 | |
| 31317 },{"./lex.js":17,"./messages.js":18,"./options.js":20,"./prod-params.js":21,"./reg.js":22,"./scope-manager.js":23,"./state.js":24,"./style.js":25,"./vars.js":26,"console-browserify":14,"events":9,"lodash":16}]},{},[]); | |
| 31318 | |
| 31319 JSHINT = require('jshint').JSHINT; | |
| 31320 if (typeof exports === 'object' && exports) exports.JSHINT = JSHINT; | |
| 31321 }()); |