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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-rest-getter.case
// - src/dstr-binding/default/arrow-function-dflt.template
/*---
description: Getter is called when obj is being deconstructed to a rest Object (arrow function expression (default parameter))
esid: sec-arrow-function-definitions-runtime-semantics-evaluation
features: [object-rest, destructuring-binding, default-parameters]
flags: [generated]
includes: [propertyHelper.js]
info: |
ArrowFunction : ArrowParameters => ConciseBody
[...]
4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
[...]
9.2.1 [[Call]] ( thisArgument, argumentsList)
[...]
7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
[...]
9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
[...]
9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
[...]
23. Let iteratorRecord be Record {[[iterator]]:
CreateListIterator(argumentsList), [[done]]: false}.
24. If hasDuplicates is true, then
[...]
25. Else,
b. Let formalStatus be IteratorBindingInitialization for formals with
iteratorRecord and env as arguments.
[...]
---*/
var count = 0;
var callCount = 0;
var f;
f = ({...x} = { get v() { count++; return 2; } }) => {
assert.sameValue(count, 1);
verifyProperty(x, "v", {
enumerable: true,
writable: true,
configurable: true,
value: 2
});
callCount = callCount + 1;
};
f();
assert.sameValue(callCount, 1, 'arrow function invoked exactly once');
reportCompare(0, 0);
|
