| // Copyright (C) 2020 Rick Waldron. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-ecmascript-standard-built-in-objects |
| description: > |
| Object.getPrototypeOf((function* g() {}).prototype).next does not implement [[Construct]], is not new-able |
| info: | |
| ECMAScript Function Objects |
| |
| Built-in function objects that are not identified as constructors do not |
| implement the [[Construct]] internal method unless otherwise specified in |
| the description of a particular function. |
| |
| sec-evaluatenew |
| |
| ... |
| 7. If IsConstructor(constructor) is false, throw a TypeError exception. |
| ... |
| includes: [isConstructor.js] |
| features: [Reflect.construct, generators, arrow-function] |
| ---*/ |
| |
| assert.sameValue( |
| isConstructor(Object.getPrototypeOf((function* g() {}).prototype).next), |
| false, |
| 'isConstructor(Object.getPrototypeOf((function* g() {}).prototype).next) must return false' |
| ); |
| |
| assert.throws(TypeError, () => { |
| function* g() {} let iterator = g(); new iterator.next(); |
| }, '`function* g() {} let iterator = g(); new iterator.next()` throws TypeError'); |
| |