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'use strict';
var GetIntrinsic = require('get-intrinsic');
var $Array = GetIntrinsic('%Array%'); var $species = GetIntrinsic('%Symbol.species%', true); var $TypeError = GetIntrinsic('%TypeError%');
var Get = require('./Get'); var IsArray = require('./IsArray'); var IsConstructor = require('./IsConstructor'); var IsInteger = require('./IsInteger'); var Type = require('./Type');
// https://ecma-international.org/ecma-262/6.0/#sec-arrayspeciescreate
module.exports = function ArraySpeciesCreate(originalArray, length) { if (!IsInteger(length) || length < 0) { throw new $TypeError('Assertion failed: length must be an integer >= 0'); } var len = length === 0 ? 0 : length; var C; var isArray = IsArray(originalArray); if (isArray) { C = Get(originalArray, 'constructor'); // TODO: figure out how to make a cross-realm normal Array, a same-realm Array
// if (IsConstructor(C)) {
// if C is another realm's Array, C = undefined
// Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(Array))) === null ?
// }
if ($species && Type(C) === 'Object') { C = Get(C, $species); if (C === null) { C = void 0; } } } if (typeof C === 'undefined') { return $Array(len); } if (!IsConstructor(C)) { throw new $TypeError('C must be a constructor'); } return new C(len); // Construct(C, len);
};
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