1 // Copyright (C) 2021 Microsoft. All rights reserved.
2 // This code is governed by the BSD license found in the LICENSE file.
5 esid: sec-ecmascript-standard-built-in-objects
7 Array.prototype.findLast does not implement [[Construct]], is not new-able.
9 ECMAScript Function Objects
11 Built-in function objects that are not identified as constructors do not
12 implement the [[Construct]] internal method unless otherwise specified in
13 the description of a particular function.
18 7. If IsConstructor(constructor) is false, throw a TypeError exception.
20 includes: [isConstructor.js]
21 features: [Reflect.construct, arrow-function, array-find-from-last]
24 assert.sameValue(isConstructor(Array.prototype.findLast), false, 'isConstructor(Array.prototype.findLast) must return false');
26 assert.throws(TypeError, () => {
27 new Array.prototype.findLast(() => {});
28 }, '`new Array.prototype.findLast(() => {})` throws TypeError');