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
|
// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-prop-obj.case
// - src/dstr-binding/default/async-gen-func-expr-dflt.template
/*---
description: Object binding pattern with "nested" object binding pattern not using initializer (async generator function expression (default parameter))
esid: sec-asyncgenerator-definitions-evaluation
features: [async-iteration]
flags: [generated, async]
info: |
AsyncGeneratorExpression : async [no LineTerminator here] function * ( FormalParameters ) {
AsyncGeneratorBody }
[...]
3. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters,
AsyncGeneratorBody, scope, strict).
[...]
13.3.3.7 Runtime Semantics: KeyedBindingInitialization
[...]
3. If Initializer is present and v is undefined, then
[...]
4. Return the result of performing BindingInitialization for BindingPattern
passing v and environment as arguments.
---*/
var callCount = 0;
var f;
f = async function*({ w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: { x: undefined, z: 7 } }) {
assert.sameValue(x, undefined);
assert.sameValue(y, undefined);
assert.sameValue(z, 7);
assert.throws(ReferenceError, function() {
w;
});
callCount = callCount + 1;
};
f().next().then(() => {
assert.sameValue(callCount, 1, 'invoked exactly once');
}).then($DONE, $DONE);
|
