test262/test/language/expressions/object/method-definition/async-meth-dflt-params-duplicates.js

// This file was procedurally generated from the following sources:
// - src/function-forms/dflt-params-duplicates.case
// - src/function-forms/syntax/async-meth.template
/*---
description: It is a Syntax Error if BoundNames of FormalParameters contains any duplicate elements. (async method)
esid: sec-async-function-definitions
features: [default-parameters]
flags: [generated]
negative:
  phase: early
  type: SyntaxError
info: |
    14.6 Async Function Definitions

    AsyncMethod :
     async PropertyName ( UniqueFormalParameters ) { AsyncFunctionBody }

    14.1.2 Static Semantics: Early Errors

    StrictFormalParameters : FormalParameters

    - It is a Syntax Error if BoundNames of FormalParameters contains any
      duplicate elements.

    FormalParameters : FormalParameterList

    - It is a Syntax Error if IsSimpleParameterList of FormalParameterList is
      false and BoundNames of FormalParameterList contains any duplicate
      elements.

---*/


({
  async *method(x = 0, x) {
    
  }
});