.config/coc/extensions/node_modules/coc-prettier/node_modules/core-js/internals/array-species-constructor.js

   1 var global = require('../internals/global');
   2 var isArray = require('../internals/is-array');
   3 var isConstructor = require('../internals/is-constructor');
   4 var isObject = require('../internals/is-object');
   5 var wellKnownSymbol = require('../internals/well-known-symbol');
   6
   7 var SPECIES = wellKnownSymbol('species');
   8 var Array = global.Array;
   9
  10 // a part of `ArraySpeciesCreate` abstract operation
  11 // https://tc39.es/ecma262/#sec-arrayspeciescreate
  12 module.exports = function (originalArray) {
  13   var C;
  14   if (isArray(originalArray)) {
  15     C = originalArray.constructor;
  16     // cross-realm fallback
  17     if (isConstructor(C) && (C === Array || isArray(C.prototype))) C = undefined;
  18     else if (isObject(C)) {
  19       C = C[SPECIES];
  20       if (C === null) C = undefined;
  21     }
  22   } return C === undefined ? Array : C;
  23 };