// This file was procedurally generated from the following sources: // - src/function-forms/rest-params-trailing-comma-early-error.case // - src/function-forms/syntax/cls-expr-async-gen-meth.template /*--- description: It's a syntax error if a FunctionRestParameter is followed by a trailing comma (class expression async generator method) esid: sec-class-definitions-runtime-semantics-evaluation features: [async-iteration] flags: [generated] negative: phase: parse type: SyntaxError info: | ClassExpression : class BindingIdentifieropt ClassTail 1. If BindingIdentifieropt is not present, let className be undefined. 2. Else, let className be StringValue of BindingIdentifier. 3. 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 i. Let status be the result of performing PropertyDefinitionEvaluation for m with arguments proto 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). [...] Trailing comma in the parameters list 14.1 Function Definitions FormalParameters[Yield, Await] : [empty] FunctionRestParameter[?Yield, ?Await] FormalParameterList[?Yield, ?Await] FormalParameterList[?Yield, ?Await] , FormalParameterList[?Yield, ?Await] , FunctionRestParameter[?Yield, ?Await] ---*/ throw "Test262: This statement should not be evaluated."; 0, class { async *method(...a,) { } };