muJSArrowParameterList :: JSArrowParameterList -> [Pattern]
muJSArrowParameterList (JSUnparenthesizedArrowParameter ident)        = [muIdentPattern ident]
muJSArrowParameterList :: JSArrowParameterList -> [Pattern]
muJSArrowParameterList (JSUnparenthesizedArrowParameter ident)        = [muIdentPattern ident]
muJSArrowParameterList (JSUnparenthesizedArrowParameter ident)        = [muIdentPattern ident]