Edit File: SpeciesConstructor.js
'use strict'; var GetIntrinsic = require('get-intrinsic'); var $species = GetIntrinsic('%Symbol.species%', true); var $TypeError = GetIntrinsic('%TypeError%'); var IsConstructor = require('./IsConstructor'); var Type = require('./Type'); // https://ecma-international.org/ecma-262/6.0/#sec-speciesconstructor module.exports = function SpeciesConstructor(O, defaultConstructor) { if (Type(O) !== 'Object') { throw new $TypeError('Assertion failed: Type(O) is not Object'); } var C = O.constructor; if (typeof C === 'undefined') { return defaultConstructor; } if (Type(C) !== 'Object') { throw new $TypeError('O.constructor is not an Object'); } var S = $species ? C[$species] : void 0; if (S == null) { return defaultConstructor; } if (IsConstructor(S)) { return S; } throw new $TypeError('no constructor found'); };
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