40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
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'use strict';
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var GetIntrinsic = require('../GetIntrinsic');
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var $TypeError = GetIntrinsic('%TypeError%');
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var Type = require('./Type');
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var IsDataDescriptor = require('./IsDataDescriptor');
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var IsAccessorDescriptor = require('./IsAccessorDescriptor');
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var assertRecord = require('../helpers/assertRecord');
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// https://ecma-international.org/ecma-262/5.1/#sec-8.10.4
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module.exports = function FromPropertyDescriptor(Desc) {
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if (typeof Desc === 'undefined') {
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return Desc;
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}
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assertRecord(Type, 'Property Descriptor', 'Desc', Desc);
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if (IsDataDescriptor(Desc)) {
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return {
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value: Desc['[[Value]]'],
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writable: !!Desc['[[Writable]]'],
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enumerable: !!Desc['[[Enumerable]]'],
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configurable: !!Desc['[[Configurable]]']
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};
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} else if (IsAccessorDescriptor(Desc)) {
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return {
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get: Desc['[[Get]]'],
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set: Desc['[[Set]]'],
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enumerable: !!Desc['[[Enumerable]]'],
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configurable: !!Desc['[[Configurable]]']
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};
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} else {
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throw new $TypeError('FromPropertyDescriptor must be called with a fully populated Property Descriptor');
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}
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};
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