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文件: /node_modules/core-js/internals/array-species-create.js
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var isObject = require('../internals/is-object'); var isArray = require('../internals/is-array'); var wellKnownSymbol = require('../internals/well-known-symbol'); var SPECIES = wellKnownSymbol('species'); // `ArraySpeciesCreate` abstract operation // https://tc39.github.io/ecma262/#sec-arrayspeciescreate module.exports = function (originalArray, length) { var C; if (isArray(originalArray)) { C = originalArray.constructor; // cross-realm fallback if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined; else if (isObject(C)) { C = C[SPECIES]; if (C === null) C = undefined; } } return new (C === undefined ? Array : C)(length === 0 ? 0 : length); };
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