51 lines
1.9 KiB
JavaScript
51 lines
1.9 KiB
JavaScript
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'use strict';
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var $ = require('../internals/export');
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var requireObjectCoercible = require('../internals/require-object-coercible');
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var isRegExp = require('../internals/is-regexp');
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var getRegExpFlags = require('../internals/regexp-flags');
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var wellKnownSymbol = require('../internals/well-known-symbol');
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var IS_PURE = require('../internals/is-pure');
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var REPLACE = wellKnownSymbol('replace');
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var RegExpPrototype = RegExp.prototype;
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// `String.prototype.replaceAll` method
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// https://github.com/tc39/proposal-string-replace-all
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$({ target: 'String', proto: true }, {
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replaceAll: function replaceAll(searchValue, replaceValue) {
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var O = requireObjectCoercible(this);
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var IS_REG_EXP, flags, replacer, string, searchString, template, result, position, index;
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if (searchValue != null) {
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IS_REG_EXP = isRegExp(searchValue);
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if (IS_REG_EXP) {
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flags = String(requireObjectCoercible('flags' in RegExpPrototype
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? searchValue.flags
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: getRegExpFlags.call(searchValue)
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));
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if (!~flags.indexOf('g')) throw TypeError('`.replaceAll` does not allow non-global regexes');
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}
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replacer = searchValue[REPLACE];
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if (replacer !== undefined) {
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return replacer.call(searchValue, O, replaceValue);
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} else if (IS_PURE && IS_REG_EXP) {
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return String(O).replace(searchValue, replaceValue);
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}
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}
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string = String(O);
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searchString = String(searchValue);
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if (searchString === '') return replaceAll.call(string, /(?:)/g, replaceValue);
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template = string.split(searchString);
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if (typeof replaceValue !== 'function') {
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return template.join(String(replaceValue));
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}
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result = template[0];
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position = result.length;
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for (index = 1; index < template.length; index++) {
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result += String(replaceValue(searchString, position, string));
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position += searchString.length + template[index].length;
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result += template[index];
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}
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return result;
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}
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});
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