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19 lines
775 B
JavaScript
19 lines
775 B
JavaScript
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'use strict';
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var $ = require('../internals/export');
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var $map = require('../internals/array-iteration').map;
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var arrayMethodHasSpeciesSupport = require('../internals/array-method-has-species-support');
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var arrayMethodUsesToLength = require('../internals/array-method-uses-to-length');
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var HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('map');
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// FF49- issue
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var USES_TO_LENGTH = arrayMethodUsesToLength('map');
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// `Array.prototype.map` method
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// https://tc39.github.io/ecma262/#sec-array.prototype.map
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// with adding support of @@species
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$({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT || !USES_TO_LENGTH }, {
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map: function map(callbackfn /* , thisArg */) {
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return $map(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
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}
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});
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