Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| error:SyntaxError
// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-rest-init-obj.case
// - src/dstr-binding/default/async-gen-func-named-expr-dflt.template
/*---
description: Rest element (nested object pattern) does not support initializer (async generator named function expression (default parameter))
esid: sec-asyncgenerator-definitions-evaluation
features: [async-iteration]
flags: [generated]
negative:
phase: parse
type: SyntaxError
info: |
AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier
( FormalParameters ) { AsyncGeneratorBody }
[...]
7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters,
AsyncGeneratorBody, funcEnv, strict).
[...]
13.3.3 Destructuring Binding Patterns
ArrayBindingPattern[Yield] :
[ Elisionopt BindingRestElement[?Yield]opt ]
[ BindingElementList[?Yield] ]
[ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
---*/
$DONOTEVALUATE();
var callCount = 0;
var f;
f = async function* h([...{ x } = []] = []) {
callCount = callCount + 1;
};
f().next().then(() => {
assert.sameValue(callCount, 1, 'invoked exactly once');
}).then($DONE, $DONE);