mirror of https://github.com/tc39/test262.git
41 lines
1.4 KiB
JavaScript
41 lines
1.4 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
|
|
// - src/dstr-binding/default/async-gen-func-decl.template
|
|
/*---
|
|
description: RestElement applied to an exhausted iterator (async generator function declaration)
|
|
esid: sec-asyncgenerator-definitions-instantiatefunctionobject
|
|
features: [Symbol.iterator, async-iteration]
|
|
flags: [generated, async]
|
|
info: |
|
|
AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
|
|
( FormalParameters ) { AsyncGeneratorBody }
|
|
|
|
[...]
|
|
3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
|
|
scope, strict).
|
|
[...]
|
|
|
|
|
|
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
|
|
BindingRestElement : ... BindingIdentifier
|
|
1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
|
|
environment).
|
|
2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
|
|
[...]
|
|
b. If iteratorRecord.[[done]] is true, then
|
|
i. If environment is undefined, return PutValue(lhs, A).
|
|
ii. Return InitializeReferencedBinding(lhs, A).
|
|
|
|
---*/
|
|
|
|
|
|
var callCount = 0;
|
|
async function* f([, , ...x]) {
|
|
assert(Array.isArray(x));
|
|
assert.sameValue(x.length, 0);
|
|
callCount = callCount + 1;
|
|
};
|
|
f([1, 2]).next().then(() => {
|
|
assert.sameValue(callCount, 1, 'invoked exactly once');
|
|
}).then($DONE, $DONE);
|