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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/gen-func-decl.template
/*---
description: A trailing comma should not increase the respective length, using default parameters (generator function declaration)
esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject
features: [generators]
flags: [generated]
info: |
GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody }
[...]
2. Let F be GeneratorFunctionCreate(Normal, FormalParameters,
GeneratorBody, scope, strict).
[...]
9.2.1 [[Call]] ( thisArgument, argumentsList)
[...]
7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
[...]
9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
[...]
9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
[...]
23. Let iteratorRecord be Record {[[iterator]]:
CreateListIterator(argumentsList), [[done]]: false}.
24. If hasDuplicates is true, then
[...]
25. Else,
b. Let formalStatus be IteratorBindingInitialization for formals with
iteratorRecord and env as arguments.
[...]
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
function* ref(a, b = 39,) {
assert.sameValue(a, 42);
assert.sameValue(b, 39);
callCount = callCount + 1;
}
ref(42, undefined, 1).next();
assert.sameValue(callCount, 1, 'generator function invoked exactly once');
assert.sameValue(ref.length, 1, 'length is properly set');
reportCompare(0, 0);
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