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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// |reftest| error:SyntaxError
// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-rest-init-id.case
// - src/dstr-binding/default/cls-expr-private-meth-static-dflt.template
/*---
description: Rest element (identifier) does not support initializer (private static class expression method (default parameter))
esid: sec-class-definitions-runtime-semantics-evaluation
features: [class, class-static-methods-private, destructuring-binding, default-parameters]
flags: [generated]
negative:
phase: parse
type: SyntaxError
info: |
ClassExpression : class BindingIdentifieropt ClassTail
1. If BindingIdentifieropt is not present, let className be undefined.
2. Else, let className be StringValue of BindingIdentifier.
3. Let value be the result of ClassDefinitionEvaluation of ClassTail
with argument className.
[...]
14.5.14 Runtime Semantics: ClassDefinitionEvaluation
21. For each ClassElement m in order from methods
a. If IsStatic of m is false, then
b. Else,
Let status be the result of performing PropertyDefinitionEvaluation for
m with arguments F and false.
[...]
14.3.8 Runtime Semantics: DefineMethod
MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
[...]
6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody,
scope, strict). If functionPrototype was passed as a parameter then pass its
value as the functionPrototype optional argument of FunctionCreate.
[...]
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.
[...]
13.3.3 Destructuring Binding Patterns
ArrayBindingPattern[Yield] :
[ Elisionopt BindingRestElement[?Yield]opt ]
[ BindingElementList[?Yield] ]
[ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
---*/
$DONOTEVALUATE();
var callCount = 0;
var C = class {
static #method([...x = []] = []) {
callCount = callCount + 1;
}
static get method() {
return this.#method;
}
};
C.method();
assert.sameValue(callCount, 1, 'method invoked exactly once');
|
