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// |reftest| error:SyntaxError
// Copyright 2019 Mike Pennisi. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-method-definitions
description: Formal parameters may not contain duplicates
info: |
# 14.3 Method Definitions
MethodDefinition[Yield, Await]:
PropertyName[?Yield, ?Await](UniqueFormalParameters[~Yield, ~Await]){FunctionBody[~Yield, ~Await]}
# 14.1.2 Static Semantics: Early Errors
UniqueFormalParameters:FormalParameters
- It is a Syntax Error if BoundNames of FormalParameters contains any
duplicate elements.
negative:
phase: parse
type: SyntaxError
---*/
$DONOTEVALUATE();
class Foo {
foo(a, a) { }
}