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codeql-action/node_modules/es-abstract/2021/OrdinaryObjectCreate.js
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'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $ObjectCreate = GetIntrinsic('%Object.create%', true); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var $SyntaxError = GetIntrinsic('%SyntaxError%'); | |
var IsArray = require('./IsArray'); | |
var Type = require('./Type'); | |
var forEach = require('../helpers/forEach'); | |
var SLOT = require('internal-slot'); | |
var hasProto = require('has-proto')(); | |
// https://262.ecma-international.org/11.0/#sec-objectcreate | |
module.exports = function OrdinaryObjectCreate(proto) { | |
if (proto !== null && Type(proto) !== 'Object') { | |
throw new $TypeError('Assertion failed: `proto` must be null or an object'); | |
} | |
var additionalInternalSlotsList = arguments.length < 2 ? [] : arguments[1]; | |
if (!IsArray(additionalInternalSlotsList)) { | |
throw new $TypeError('Assertion failed: `additionalInternalSlotsList` must be an Array'); | |
} | |
// var internalSlotsList = ['[[Prototype]]', '[[Extensible]]']; // step 1 | |
// internalSlotsList.push(...additionalInternalSlotsList); // step 2 | |
// var O = MakeBasicObject(internalSlotsList); // step 3 | |
// setProto(O, proto); // step 4 | |
// return O; // step 5 | |
var O; | |
if ($ObjectCreate) { | |
O = $ObjectCreate(proto); | |
} else if (hasProto) { | |
O = { __proto__: proto }; | |
} else { | |
if (proto === null) { | |
throw new $SyntaxError('native Object.create support is required to create null objects'); | |
} | |
var T = function T() {}; | |
T.prototype = proto; | |
O = new T(); | |
} | |
if (additionalInternalSlotsList.length > 0) { | |
forEach(additionalInternalSlotsList, function (slot) { | |
SLOT.set(O, slot, void undefined); | |
}); | |
} | |
return O; | |
}; |