mirror of https://github.com/tc39/test262.git
60 lines
1.7 KiB
JavaScript
60 lines
1.7 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/function-forms/dflt-params-ref-later.case
|
|
// - src/function-forms/error/async-arrow-function.template
|
|
/*---
|
|
description: Referencing a parameter that occurs later in the ParameterList (async arrow function expression)
|
|
esid: sec-async-arrow-function-definitions
|
|
features: [default-parameters, async-functions]
|
|
flags: [generated, async]
|
|
info: |
|
|
14.7 Async Arrow Function Definitions
|
|
|
|
AsyncArrowFunction :
|
|
...
|
|
CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody
|
|
|
|
AsyncConciseBody :
|
|
{ AsyncFunctionBody }
|
|
|
|
...
|
|
|
|
Supplemental Syntax
|
|
|
|
When processing an instance of the production AsyncArrowFunction :
|
|
CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody the interpretation of
|
|
CoverCallExpressionAndAsyncArrowHead is refined using the following grammar:
|
|
|
|
AsyncArrowHead :
|
|
async ArrowFormalParameters
|
|
|
|
|
|
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;
|
|
f = async (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);
|