blob: 9d8fc30c0c1fee8924d3b5448fa848d1b191d207 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 19.2.1
description: >
super must be called to initialize Function internal slots
info: |
19.2.1 The Function Constructor
...
The Function constructor is designed to be subclassable. It may be used as the
value of an extends clause of a class definition. Subclass constructors that
intend to inherit the specified Function behaviour must include a super call
to the Function constructor to create and initialize a subclass instances with
the internal slots necessary for built-in function behaviour.
...
---*/
class Fn extends Function {
constructor() {}
}
assert.throws(ReferenceError, function() {
new Fn();
});
class Fn2 extends Function {
constructor() {
super();
}
}
var fn = new Fn2();
assert(fn instanceof Function);
reportCompare(0, 0);
|