// This file was procedurally generated from the following sources: // - src/dstr-binding/ary-ptrn-elem-ary-elision-iter.case // - src/dstr-binding/default/async-gen-func-named-expr.template /*--- description: BindingElement with array binding pattern and initializer is not used (async generator named function expression) esid: sec-asyncgenerator-definitions-evaluation features: [generators, async-iteration] flags: [generated, async] info: | AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { AsyncGeneratorBody } [...] 7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, funcEnv, strict). [...] 13.3.3.6 Runtime Semantics: IteratorBindingInitialization BindingElement : BindingPatternInitializer opt 1. If iteratorRecord.[[done]] is false, then a. Let next be IteratorStep(iteratorRecord.[[iterator]]). [...] e. Else, i. Let v be IteratorValue(next). [...] 4. Return the result of performing BindingInitialization of BindingPattern with v and environment as the arguments. ---*/ var callCount = 0; function* g() { callCount += 1; }; var callCount = 0; var f; f = async function* h([[,] = g()]) { assert.sameValue(callCount, 0); callCount = callCount + 1; }; f([[]]).next().then(() => { assert.sameValue(callCount, 1, 'invoked exactly once'); }).then($DONE, $DONE);