| 1 | 'use strict';
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| 2 |
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| 3 | var GetIntrinsic = require('get-intrinsic');
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| 4 |
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| 5 | var $ObjectCreate = GetIntrinsic('%Object.create%', true);
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| 6 | var $TypeError = require('es-errors/type');
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| 7 | var $SyntaxError = require('es-errors/syntax');
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| 8 | var isObject = require('es-object-atoms/isObject');
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| 9 |
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| 10 | var IsArray = require('./IsArray');
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| 11 |
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| 12 | var forEach = require('../helpers/forEach');
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| 13 |
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| 14 | var SLOT = require('internal-slot');
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| 15 |
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| 16 | var hasProto = require('has-proto')();
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| 17 |
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| 18 | // https://262.ecma-international.org/6.0/#sec-objectcreate
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| 19 |
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| 20 | module.exports = function ObjectCreate(proto, internalSlotsList) {
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| 21 | if (proto !== null && !isObject(proto)) {
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| 22 | throw new $TypeError('Assertion failed: `proto` must be null or an object');
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| 23 | }
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| 24 | var slots = arguments.length < 2 ? [] : internalSlotsList; // step 1
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| 25 | if (arguments.length >= 2 && !IsArray(slots)) {
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| 26 | throw new $TypeError('Assertion failed: `internalSlotsList` must be an Array');
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| 27 | }
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| 28 |
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| 29 | var O;
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| 30 | if (hasProto) {
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| 31 | O = { __proto__: proto };
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| 32 | } else if ($ObjectCreate) {
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| 33 | O = $ObjectCreate(proto);
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| 34 | } else {
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| 35 | if (proto === null) {
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| 36 | throw new $SyntaxError('native Object.create support is required to create null objects');
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| 37 | }
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| 38 | var T = function T() {};
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| 39 | T.prototype = proto;
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| 40 | O = new T();
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| 41 | }
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| 42 |
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| 43 | if (slots.length > 0) {
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| 44 | forEach(slots, function (slot) {
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| 45 | SLOT.set(O, slot, void undefined);
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| 46 | });
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| 47 | }
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| 48 |
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| 49 | return O; // step 6
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| 50 | };
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