| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | 'use strict'; |
| 2 | |
| 3 | var GetIntrinsic = require('get-intrinsic'); |
| 4 | |
| 5 | var $TypeError = GetIntrinsic('%TypeError%'); |
| 6 | |
| 7 | var DefineOwnProperty = require('../helpers/DefineOwnProperty'); |
| 8 | |
| 9 | var FromPropertyDescriptor = require('./FromPropertyDescriptor'); |
| 10 | var OrdinaryGetOwnProperty = require('./OrdinaryGetOwnProperty'); |
| 11 | var IsDataDescriptor = require('./IsDataDescriptor'); |
| 12 | var IsExtensible = require('./IsExtensible'); |
| 13 | var IsPropertyKey = require('./IsPropertyKey'); |
| 14 | var SameValue = require('./SameValue'); |
| 15 | var Type = require('./Type'); |
| 16 | |
| 17 | // https://ecma-international.org/ecma-262/6.0/#sec-createdataproperty |
| 18 | |
| 19 | module.exports = function CreateDataProperty(O, P, V) { |
| 20 | if (Type(O) !== 'Object') { |
| 21 | throw new $TypeError('Assertion failed: Type(O) is not Object'); |
| 22 | } |
| 23 | if (!IsPropertyKey(P)) { |
| 24 | throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); |
| 25 | } |
| 26 | var oldDesc = OrdinaryGetOwnProperty(O, P); |
| 27 | var extensible = !oldDesc || IsExtensible(O); |
| 28 | var immutable = oldDesc && (!oldDesc['[[Writable]]'] || !oldDesc['[[Configurable]]']); |
| 29 | if (immutable || !extensible) { |
| 30 | return false; |
| 31 | } |
| 32 | return DefineOwnProperty( |
| 33 | IsDataDescriptor, |
| 34 | SameValue, |
| 35 | FromPropertyDescriptor, |
| 36 | O, |
| 37 | P, |
| 38 | { |
| 39 | '[[Configurable]]': true, |
| 40 | '[[Enumerable]]': true, |
| 41 | '[[Value]]': V, |
| 42 | '[[Writable]]': true |
| 43 | } |
| 44 | ); |
| 45 | }; |