优化

‘liusuyi’

2023-10-21 ae92b6823499cfab77201b4033922fa373fb37a3

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