[d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var $TypeError = require('es-errors/type');
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| 4 |
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| 5 | var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
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| 6 | var IsExtensible = require('./IsExtensible');
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| 7 | var IsPropertyKey = require('./IsPropertyKey');
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| 8 | var Type = require('./Type');
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| 9 |
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| 10 | // https://262.ecma-international.org/13.0/#sec-definemethodproperty
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| 11 |
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| 12 | module.exports = function DefineMethodProperty(homeObject, key, closure, enumerable) {
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| 13 | if (Type(homeObject) !== 'Object') {
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| 14 | throw new $TypeError('Assertion failed: `homeObject` is not an Object');
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| 15 | }
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| 16 | if (!IsPropertyKey(key)) {
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| 17 | throw new $TypeError('Assertion failed: `key` is not a Property Key or a Private Name');
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| 18 | }
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| 19 | if (typeof closure !== 'function') {
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| 20 | throw new $TypeError('Assertion failed: `closure` is not a function');
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| 21 | }
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| 22 | if (typeof enumerable !== 'boolean') {
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| 23 | throw new $TypeError('Assertion failed: `enumerable` is not a Boolean');
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| 24 | }
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| 25 |
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| 26 | // 1. Assert: homeObject is an ordinary, extensible object with no non-configurable properties.
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| 27 | if (!IsExtensible(homeObject)) {
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| 28 | throw new $TypeError('Assertion failed: `homeObject` is not an ordinary, extensible object, with no non-configurable properties');
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| 29 | }
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| 30 |
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| 31 | // 2. If key is a Private Name, then
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| 32 | // a. Return PrivateElement { [[Key]]: key, [[Kind]]: method, [[Value]]: closure }.
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| 33 | // 3. Else,
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| 34 | var desc = { // step 3.a
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| 35 | '[[Value]]': closure,
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| 36 | '[[Writable]]': true,
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| 37 | '[[Enumerable]]': enumerable,
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| 38 | '[[Configurable]]': true
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| 39 | };
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| 40 | DefinePropertyOrThrow(homeObject, key, desc); // step 3.b
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| 41 | };
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