From e93da8b04da86773247aadb1cbb1912e4f4526b2 Mon Sep 17 00:00:00 2001 From: Priyansh Date: Tue, 22 Dec 2020 17:49:59 +0530 Subject: Rewriting Project --- node_modules/core-js/modules/es.string.split.js | 134 ++++++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 node_modules/core-js/modules/es.string.split.js (limited to 'node_modules/core-js/modules/es.string.split.js') diff --git a/node_modules/core-js/modules/es.string.split.js b/node_modules/core-js/modules/es.string.split.js new file mode 100644 index 0000000..26743f5 --- /dev/null +++ b/node_modules/core-js/modules/es.string.split.js @@ -0,0 +1,134 @@ +'use strict'; +var fixRegExpWellKnownSymbolLogic = require('../internals/fix-regexp-well-known-symbol-logic'); +var isRegExp = require('../internals/is-regexp'); +var anObject = require('../internals/an-object'); +var requireObjectCoercible = require('../internals/require-object-coercible'); +var speciesConstructor = require('../internals/species-constructor'); +var advanceStringIndex = require('../internals/advance-string-index'); +var toLength = require('../internals/to-length'); +var callRegExpExec = require('../internals/regexp-exec-abstract'); +var regexpExec = require('../internals/regexp-exec'); +var fails = require('../internals/fails'); + +var arrayPush = [].push; +var min = Math.min; +var MAX_UINT32 = 0xFFFFFFFF; + +// babel-minify transpiles RegExp('x', 'y') -> /x/y and it causes SyntaxError +var SUPPORTS_Y = !fails(function () { return !RegExp(MAX_UINT32, 'y'); }); + +// @@split logic +fixRegExpWellKnownSymbolLogic('split', 2, function (SPLIT, nativeSplit, maybeCallNative) { + var internalSplit; + if ( + 'abbc'.split(/(b)*/)[1] == 'c' || + 'test'.split(/(?:)/, -1).length != 4 || + 'ab'.split(/(?:ab)*/).length != 2 || + '.'.split(/(.?)(.?)/).length != 4 || + '.'.split(/()()/).length > 1 || + ''.split(/.?/).length + ) { + // based on es5-shim implementation, need to rework it + internalSplit = function (separator, limit) { + var string = String(requireObjectCoercible(this)); + var lim = limit === undefined ? MAX_UINT32 : limit >>> 0; + if (lim === 0) return []; + if (separator === undefined) return [string]; + // If `separator` is not a regex, use native split + if (!isRegExp(separator)) { + return nativeSplit.call(string, separator, lim); + } + var output = []; + var flags = (separator.ignoreCase ? 'i' : '') + + (separator.multiline ? 'm' : '') + + (separator.unicode ? 'u' : '') + + (separator.sticky ? 'y' : ''); + var lastLastIndex = 0; + // Make `global` and avoid `lastIndex` issues by working with a copy + var separatorCopy = new RegExp(separator.source, flags + 'g'); + var match, lastIndex, lastLength; + while (match = regexpExec.call(separatorCopy, string)) { + lastIndex = separatorCopy.lastIndex; + if (lastIndex > lastLastIndex) { + output.push(string.slice(lastLastIndex, match.index)); + if (match.length > 1 && match.index < string.length) arrayPush.apply(output, match.slice(1)); + lastLength = match[0].length; + lastLastIndex = lastIndex; + if (output.length >= lim) break; + } + if (separatorCopy.lastIndex === match.index) separatorCopy.lastIndex++; // Avoid an infinite loop + } + if (lastLastIndex === string.length) { + if (lastLength || !separatorCopy.test('')) output.push(''); + } else output.push(string.slice(lastLastIndex)); + return output.length > lim ? output.slice(0, lim) : output; + }; + // Chakra, V8 + } else if ('0'.split(undefined, 0).length) { + internalSplit = function (separator, limit) { + return separator === undefined && limit === 0 ? [] : nativeSplit.call(this, separator, limit); + }; + } else internalSplit = nativeSplit; + + return [ + // `String.prototype.split` method + // https://tc39.github.io/ecma262/#sec-string.prototype.split + function split(separator, limit) { + var O = requireObjectCoercible(this); + var splitter = separator == undefined ? undefined : separator[SPLIT]; + return splitter !== undefined + ? splitter.call(separator, O, limit) + : internalSplit.call(String(O), separator, limit); + }, + // `RegExp.prototype[@@split]` method + // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@split + // + // NOTE: This cannot be properly polyfilled in engines that don't support + // the 'y' flag. + function (regexp, limit) { + var res = maybeCallNative(internalSplit, regexp, this, limit, internalSplit !== nativeSplit); + if (res.done) return res.value; + + var rx = anObject(regexp); + var S = String(this); + var C = speciesConstructor(rx, RegExp); + + var unicodeMatching = rx.unicode; + var flags = (rx.ignoreCase ? 'i' : '') + + (rx.multiline ? 'm' : '') + + (rx.unicode ? 'u' : '') + + (SUPPORTS_Y ? 'y' : 'g'); + + // ^(? + rx + ) is needed, in combination with some S slicing, to + // simulate the 'y' flag. + var splitter = new C(SUPPORTS_Y ? rx : '^(?:' + rx.source + ')', flags); + var lim = limit === undefined ? MAX_UINT32 : limit >>> 0; + if (lim === 0) return []; + if (S.length === 0) return callRegExpExec(splitter, S) === null ? [S] : []; + var p = 0; + var q = 0; + var A = []; + while (q < S.length) { + splitter.lastIndex = SUPPORTS_Y ? q : 0; + var z = callRegExpExec(splitter, SUPPORTS_Y ? S : S.slice(q)); + var e; + if ( + z === null || + (e = min(toLength(splitter.lastIndex + (SUPPORTS_Y ? 0 : q)), S.length)) === p + ) { + q = advanceStringIndex(S, q, unicodeMatching); + } else { + A.push(S.slice(p, q)); + if (A.length === lim) return A; + for (var i = 1; i <= z.length - 1; i++) { + A.push(z[i]); + if (A.length === lim) return A; + } + q = p = e; + } + } + A.push(S.slice(p)); + return A; + } + ]; +}, !SUPPORTS_Y); -- cgit v1.2.3