Frontend/25_01_07/mai/node_modules/es-abstract/2023/DefineMethodProperty.js
szabomarton 7f4a15b9c3 asd
2025-01-28 11:38:27 +01:00

43 lines
1.5 KiB
JavaScript

'use strict';
var $TypeError = require('es-errors/type');
var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
var IsExtensible = require('./IsExtensible');
var isObject = require('../helpers/isObject');
var isPropertyKey = require('../helpers/isPropertyKey');
// https://262.ecma-international.org/13.0/#sec-definemethodproperty
module.exports = function DefineMethodProperty(homeObject, key, closure, enumerable) {
if (!isObject(homeObject)) {
throw new $TypeError('Assertion failed: `homeObject` is not an Object');
}
if (!isPropertyKey(key)) {
throw new $TypeError('Assertion failed: `key` is not a Property Key or a Private Name');
}
if (typeof closure !== 'function') {
throw new $TypeError('Assertion failed: `closure` is not a function');
}
if (typeof enumerable !== 'boolean') {
throw new $TypeError('Assertion failed: `enumerable` is not a Boolean');
}
// 1. Assert: homeObject is an ordinary, extensible object with no non-configurable properties.
if (!IsExtensible(homeObject)) {
throw new $TypeError('Assertion failed: `homeObject` is not an ordinary, extensible object, with no non-configurable properties');
}
// 2. If key is a Private Name, then
// a. Return PrivateElement { [[Key]]: key, [[Kind]]: method, [[Value]]: closure }.
// 3. Else,
var desc = { // step 3.a
'[[Value]]': closure,
'[[Writable]]': true,
'[[Enumerable]]': enumerable,
'[[Configurable]]': true
};
DefinePropertyOrThrow(homeObject, key, desc); // step 3.b
};