Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| async
// This file was procedurally generated from the following sources:
// - src/function-forms/dflt-params-ref-later.case
// - src/function-forms/error/async-func-expr-named.template
/*---
description: Referencing a parameter that occurs later in the ParameterList (async function named expression)
esid: sec-async-function-definitions
features: [default-parameters, async-functions]
flags: [generated, async]
info: |
14.6 Async Function Definitions
AsyncFunctionExpression :
async function BindingIdentifier ( FormalParameters ) { AsyncFunctionBody }
14.1.19 Runtime Semantics: IteratorBindingInitialization
FormalsList : FormalsList , FormalParameter
1. Let status be the result of performing IteratorBindingInitialization for
FormalsList using iteratorRecord and environment as the arguments.
2. ReturnIfAbrupt(status).
3. Return the result of performing IteratorBindingInitialization for
FormalParameter using iteratorRecord and environment as the arguments.
---*/
var x = 0;
var callCount = 0;
var f = async function f(x = y, y) {
callCount = callCount + 1;
}
f()
.then(_ => {
throw new Test262Error('function should not be resolved');
}, error => assert.sameValue(error.constructor, ReferenceError))
.then(() => {
assert.sameValue(callCount, 0, 'function body is not evaluated');
}, $DONE)
.then($DONE, $DONE);