tor-browser

The Tor Browser
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early-errors-object-method-duplicate-parameters.js (698B)

      1 // |reftest| error:SyntaxError
      2 // Copyright 2019 Mike Pennisi. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 
      5 /*---
      6 esid: sec-method-definitions
      7 description: Formal parameters may not contain duplicates
      8 info: |
      9  # 14.3 Method Definitions
     10 
     11  MethodDefinition[Yield, Await]:
     12    PropertyName[?Yield, ?Await](UniqueFormalParameters[~Yield, ~Await]){FunctionBody[~Yield, ~Await]}
     13 
     14  # 14.1.2 Static Semantics: Early Errors
     15 
     16  UniqueFormalParameters:FormalParameters
     17 
     18  - It is a Syntax Error if BoundNames of FormalParameters contains any
     19    duplicate elements.
     20 negative:
     21  phase: parse
     22  type: SyntaxError
     23 ---*/
     24 
     25 $DONOTEVALUATE();
     26 ({
     27  foo(a, a) { }
     28 })