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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 hasProto = !({ __proto__: null } instanceof Object);
- // https://262.ecma-international.org/6.0/#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]]'];
- if (additionalInternalSlotsList.length > 0) {
- throw new $SyntaxError('es-abstract does not yet support internal slots');
- // internalSlotsList.push(...additionalInternalSlotsList);
- }
- // var O = MakeBasicObject(internalSlotsList);
- // setProto(O, proto);
- // return O;
- if ($ObjectCreate) {
- return $ObjectCreate(proto);
- }
- if (hasProto) {
- return { __proto__: proto };
- }
- if (proto === null) {
- throw new $SyntaxError('native Object.create support is required to create null objects');
- }
- var T = function T() {};
- T.prototype = proto;
- return new T();
- };
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