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// This file was procedurally generated from the following sources:
// - src/function-forms/dflt-params-trailing-comma.case
// - src/function-forms/default/async-arrow-function.template
/*---
description: A trailing comma should not increase the respective length, using default parameters (async arrow function expression)
esid: sec-async-arrow-function-definitions
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
Trailing comma in the parameters list
14.1 Function Definitions
FormalParameters[Yield, Await] : FormalParameterList[?Yield, ?Await] ,
---*/
var callCount = 0;
// Stores a reference `ref` for case evaluation
var ref = async (a, b = 39,) => {
assert.sameValue(a, 42);
assert.sameValue(b, 39);
callCount = callCount + 1;
};
ref(42, undefined, 1).then(() => {
assert.sameValue(callCount, 1, 'async arrow function invoked exactly once')
}).then($DONE, $DONE);
assert.sameValue(ref.length, 1, 'length is properly set');
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