mirror of https://github.com/tc39/test262.git
53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/function-forms/dflt-params-trailing-comma.case
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// - src/function-forms/default/async-arrow-function.template
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/*---
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description: A trailing comma should not increase the respective length, using default parameters (async arrow function expression)
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esid: sec-async-arrow-function-definitions
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features: [async-functions]
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flags: [generated, async]
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info: |
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14.7 Async Arrow Function Definitions
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AsyncArrowFunction :
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...
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CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody
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AsyncConciseBody :
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{ AsyncFunctionBody }
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...
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Supplemental Syntax
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When processing an instance of the production AsyncArrowFunction :
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CoverCallExpressionAndAsyncArrowHead => AsyncConciseBody the interpretation of
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CoverCallExpressionAndAsyncArrowHead is refined using the following grammar:
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AsyncArrowHead :
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async ArrowFormalParameters
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Trailing comma in the parameters list
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14.1 Function Definitions
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FormalParameters[Yield, Await] : FormalParameterList[?Yield, ?Await] ,
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---*/
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var callCount = 0;
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// Stores a reference `ref` for case evaluation
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var ref = async (a, b = 39,) => {
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assert.sameValue(a, 42);
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assert.sameValue(b, 39);
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callCount = callCount + 1;
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};
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ref(42, undefined, 1).then(() => {
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assert.sameValue(callCount, 1, 'async arrow function invoked exactly once')
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}).then($DONE, $DONE);
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assert.sameValue(ref.length, 1, 'length is properly set');
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