tor-browser

The Tor Browser
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rest-params-trailing-comma-early-error.js (2499B)

      1 // |reftest| error:SyntaxError
      2 // This file was procedurally generated from the following sources:
      3 // - src/function-forms/rest-params-trailing-comma-early-error.case
      4 // - src/function-forms/syntax/cls-decl-meth.template
      5 /*---
      6 description: It's a syntax error if a FunctionRestParameter is followed by a trailing comma (class expression method)
      7 esid: sec-runtime-semantics-bindingclassdeclarationevaluation
      8 flags: [generated]
      9 negative:
     10  phase: parse
     11  type: SyntaxError
     12 info: |
     13    ClassDeclaration : class BindingIdentifier ClassTail
     14 
     15    1. Let className be StringValue of BindingIdentifier.
     16    2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
     17       argument className.
     18    [...]
     19 
     20    14.5.14 Runtime Semantics: ClassDefinitionEvaluation
     21 
     22    21. For each ClassElement m in order from methods
     23        a. If IsStatic of m is false, then
     24           i. Let status be the result of performing
     25              PropertyDefinitionEvaluation for m with arguments proto and
     26              false.
     27        [...]
     28 
     29    14.3.8 Runtime Semantics: DefineMethod
     30 
     31    MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
     32 
     33    [...]
     34    6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody,
     35       scope, strict). If functionPrototype was passed as a parameter then pass its
     36       value as the functionPrototype optional argument of FunctionCreate.
     37    [...]
     38 
     39    9.2.1 [[Call]] ( thisArgument, argumentsList)
     40 
     41    [...]
     42    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     43    [...]
     44 
     45    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     46 
     47    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     48    [...]
     49 
     50    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     51 
     52    [...]
     53    23. Let iteratorRecord be Record {[[iterator]]:
     54        CreateListIterator(argumentsList), [[done]]: false}.
     55    24. If hasDuplicates is true, then
     56        [...]
     57    25. Else,
     58        b. Let formalStatus be IteratorBindingInitialization for formals with
     59           iteratorRecord and env as arguments.
     60    [...]
     61 
     62    Trailing comma in the parameters list
     63 
     64    14.1 Function Definitions
     65 
     66    FormalParameters[Yield, Await] :
     67        [empty]
     68        FunctionRestParameter[?Yield, ?Await]
     69        FormalParameterList[?Yield, ?Await]
     70        FormalParameterList[?Yield, ?Await] ,
     71        FormalParameterList[?Yield, ?Await] , FunctionRestParameter[?Yield, ?Await]
     72 ---*/
     73 $DONOTEVALUATE();
     74 
     75 class C {
     76  method(...a,) {
     77    
     78  }
     79 }