// |reftest| async // This file was procedurally generated from the following sources: // - src/dstr-binding/ary-ptrn-elem-ary-elision-iter.case // - src/dstr-binding/default/cls-decl-async-gen-meth-static.template /*--- description: BindingElement with array binding pattern and initializer is not used (static class expression async generator method) esid: sec-runtime-semantics-bindingclassdeclarationevaluation features: [generators, async-iteration] flags: [generated, async] info: | ClassDeclaration : class BindingIdentifier ClassTail 1. Let className be StringValue of BindingIdentifier. 2. Let value be the result of ClassDefinitionEvaluation of ClassTail with argument className. [...] 14.5.14 Runtime Semantics: ClassDefinitionEvaluation 21. For each ClassElement m in order from methods a. If IsStatic of m is false, then b. Else, Let status be the result of performing PropertyDefinitionEvaluation for m with arguments F and false. [...] Runtime Semantics: PropertyDefinitionEvaluation AsyncGeneratorMethod : async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody } 1. Let propKey be the result of evaluating PropertyName. 2. ReturnIfAbrupt(propKey). 3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true. Otherwise let strict be false. 4. Let scope be the running execution context's LexicalEnvironment. 5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters, 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 callCount = 0; function* g() { callCount += 1; }; var callCount = 0; class C { static async *method([[,] = g()]) { assert.sameValue(callCount, 0); callCount = callCount + 1; } }; C.method([[]]).next().then(() => { assert.sameValue(callCount, 1, 'invoked exactly once'); }).then($DONE, $DONE);