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
|
// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 14.2.16
description: >
Runtime Semantics: Evaluation
new.target
...
4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
...
The non-normative note elaborates on the "scope" argument:
An ArrowFunction does not define local bindings for arguments, super, this, or new.target. Any reference to arguments, super, or this within an ArrowFunction must resolve to a binding in a lexically enclosing environment. Typically this will be the Function Environment of an immediately enclosing function. Even though an ArrowFunction may contain references to super, the function object created in step 4 is not made into a method by performing MakeMethod. An ArrowFunction that references super is always contained within a non-ArrowFunction and the necessary state to implement super is accessible via the scope that is captured by the function object of the ArrowFunction.
---*/
var functionInvocationCount = 0;
var newInvocationCount = 0;
function F() {
if ((_ => new.target)() !== undefined) {
newInvocationCount++;
}
functionInvocationCount++;
}
F();
new F();
assert.sameValue(functionInvocationCount, 2);
assert.sameValue(newInvocationCount, 1);
|
