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codeql-action/node_modules/es-abstract/2023/ArraySpeciesCreate.js
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'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $species = GetIntrinsic('%Symbol.species%', true); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var ArrayCreate = require('./ArrayCreate'); | |
var Get = require('./Get'); | |
var IsArray = require('./IsArray'); | |
var IsConstructor = require('./IsConstructor'); | |
var Type = require('./Type'); | |
var isInteger = require('../helpers/isInteger'); | |
// https://262.ecma-international.org/12.0/#sec-arrayspeciescreate | |
module.exports = function ArraySpeciesCreate(originalArray, length) { | |
if (!isInteger(length) || length < 0) { | |
throw new $TypeError('Assertion failed: length must be an integer >= 0'); | |
} | |
var isArray = IsArray(originalArray); | |
if (!isArray) { | |
return ArrayCreate(length); | |
} | |
var C = Get(originalArray, 'constructor'); | |
// TODO: figure out how to make a cross-realm normal Array, a same-realm Array | |
// if (IsConstructor(C)) { | |
// if C is another realm's Array, C = undefined | |
// Object.getPrototypeOf(Object.getPrototypeOf(Object.getPrototypeOf(Array))) === null ? | |
// } | |
if ($species && Type(C) === 'Object') { | |
C = Get(C, $species); | |
if (C === null) { | |
C = void 0; | |
} | |
} | |
if (typeof C === 'undefined') { | |
return ArrayCreate(length); | |
} | |
if (!IsConstructor(C)) { | |
throw new $TypeError('C must be a constructor'); | |
} | |
return new C(length); // Construct(C, length); | |
}; |