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#2203 — 14.3.1 Early Errors: Duplicate parameters check performed twice for PropertySetParameterList


14.3.1 Static Semantics: Early Errors,
MethodDefinition : set PropertyName ( PropertySetParameterList ) { FunctionBody }

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

> It is a Syntax Error if BoundNames of PropertySetParameterList contains any duplicate elements.


The first early error restriction can be removed, it's already covered by the second one.


fixed in rev21 editor's draft


fixed in rev21 draft