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46 lines
1.3 KiB
46 lines
1.3 KiB
1 year ago
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'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var $TypeError = GetIntrinsic('%TypeError%');
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var DefineOwnProperty = require('../helpers/DefineOwnProperty');
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var FromPropertyDescriptor = require('./FromPropertyDescriptor');
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var OrdinaryGetOwnProperty = require('./OrdinaryGetOwnProperty');
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var IsDataDescriptor = require('./IsDataDescriptor');
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var IsExtensible = require('./IsExtensible');
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var IsPropertyKey = require('./IsPropertyKey');
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var SameValue = require('./SameValue');
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var Type = require('./Type');
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// https://ecma-international.org/ecma-262/6.0/#sec-createdataproperty
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module.exports = function CreateDataProperty(O, P, V) {
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if (Type(O) !== 'Object') {
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throw new $TypeError('Assertion failed: Type(O) is not Object');
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}
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if (!IsPropertyKey(P)) {
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throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true');
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}
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var oldDesc = OrdinaryGetOwnProperty(O, P);
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var extensible = !oldDesc || IsExtensible(O);
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var immutable = oldDesc && (!oldDesc['[[Writable]]'] || !oldDesc['[[Configurable]]']);
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if (immutable || !extensible) {
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return false;
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}
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return DefineOwnProperty(
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IsDataDescriptor,
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SameValue,
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FromPropertyDescriptor,
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O,
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P,
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{
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'[[Configurable]]': true,
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'[[Enumerable]]': true,
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'[[Value]]': V,
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'[[Writable]]': true
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}
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);
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};
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