// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-binding/ary-ptrn-elem-ary-empty-iter.case // - src/dstr-binding/default/async-gen-func-decl.template /*--- description: BindingElement with array binding pattern and initializer is not used (async generator function declaration) esid: sec-asyncgenerator-definitions-instantiatefunctionobject features: [async-iteration] flags: [generated, async] info: | AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { AsyncGeneratorBody } [...] 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, scope, 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 initCount = 0; var callCount = 0; async function* f([[] = function() { initCount += 1; }()]) { assert.sameValue(initCount, 0); callCount = callCount + 1; }; f([[23]]).next().then(() => { assert.sameValue(callCount, 1, 'invoked exactly once'); }).then($DONE, $DONE);