source: imaps-frontend/node_modules/es-abstract/2019/ToPropertyDescriptor.js@ 79a0317

'use strict';

var hasOwn = require('hasown');

var $TypeError = require('es-errors/type');

var IsCallable = require('./IsCallable');
var ToBoolean = require('./ToBoolean');

var isObject = require('../helpers/isObject');

// https://262.ecma-international.org/5.1/#sec-8.10.5

module.exports = function ToPropertyDescriptor(Obj) {
        if (!isObject(Obj)) {
                throw new $TypeError('ToPropertyDescriptor requires an object');
        }

        var desc = {};
        if (hasOwn(Obj, 'enumerable')) {
                desc['[[Enumerable]]'] = ToBoolean(Obj.enumerable);
        }
        if (hasOwn(Obj, 'configurable')) {
                desc['[[Configurable]]'] = ToBoolean(Obj.configurable);
        }
        if (hasOwn(Obj, 'value')) {
                desc['[[Value]]'] = Obj.value;
        }
        if (hasOwn(Obj, 'writable')) {
                desc['[[Writable]]'] = ToBoolean(Obj.writable);
        }
        if (hasOwn(Obj, 'get')) {
                var getter = Obj.get;
                if (typeof getter !== 'undefined' && !IsCallable(getter)) {
                        throw new $TypeError('getter must be a function');
                }
                desc['[[Get]]'] = getter;
        }
        if (hasOwn(Obj, 'set')) {
                var setter = Obj.set;
                if (typeof setter !== 'undefined' && !IsCallable(setter)) {
                        throw new $TypeError('setter must be a function');
                }
                desc['[[Set]]'] = setter;
        }

        if ((hasOwn(desc, '[[Get]]') || hasOwn(desc, '[[Set]]')) && (hasOwn(desc, '[[Value]]') || hasOwn(desc, '[[Writable]]'))) {
                throw new $TypeError('Invalid property descriptor. Cannot both specify accessors and a value or writable attribute');
        }
        return desc;
};