文件操作 - set-species.js
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文件: /usr/share/nodejs/core-js/internals/set-species.js
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'use strict'; var getBuiltIn = require('../internals/get-built-in'); var definePropertyModule = require('../internals/object-define-property'); var wellKnownSymbol = require('../internals/well-known-symbol'); var DESCRIPTORS = require('../internals/descriptors'); var SPECIES = wellKnownSymbol('species'); module.exports = function (CONSTRUCTOR_NAME) { var Constructor = getBuiltIn(CONSTRUCTOR_NAME); var defineProperty = definePropertyModule.f; if (DESCRIPTORS && Constructor && !Constructor[SPECIES]) { defineProperty(Constructor, SPECIES, { configurable: true, get: function () { return this; } }); } };
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