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45 lines
1.3 KiB
45 lines
1.3 KiB
'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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