parseUnit(main)
  skipErrorTokens(main)
  listener: beginCompilationUnit(main)
  syntheticPreviousToken(main)
  parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
    parseMetadataStar()
      listener: beginMetadataStar(main)
      listener: endMetadataStar(0)
    parseTopLevelMemberImpl()
      listener: beginTopLevelMember(main)
      isReservedKeyword(()
      parseTopLevelMethod(, null, , Instance of 'NoType', null, main, false)
        listener: beginTopLevelMethod(, null)
        listener: handleNoType()
        ensureIdentifierPotentiallyRecovered(, topLevelFunctionDeclaration, false)
          listener: handleIdentifier(main, topLevelFunctionDeclaration)
        parseMethodTypeVar(main)
          listener: handleNoTypeVariables(()
        parseGetterOrFormalParameters(main, main, false, MemberKind.TopLevelMethod)
          parseFormalParameters(main, MemberKind.TopLevelMethod)
            parseFormalParametersRest((, MemberKind.TopLevelMethod)
              listener: beginFormalParameters((, MemberKind.TopLevelMethod)
              listener: endFormalParameters(0, (, ), MemberKind.TopLevelMethod)
        parseAsyncModifierOpt())
          listener: handleAsyncModifier(null, null)
          inPlainSync()
        parseFunctionBody(), false, false)
          listener: beginBlockFunctionBody({)
          notEofOrValue(}, try)
          parseStatement({)
            parseStatementX({)
              parseTryStatement({)
                listener: beginTryStatement(try)
                parseBlock(try, BlockKind(try statement))
                  ensureBlock(try, null, try statement)
                  listener: beginBlock({, BlockKind(try statement))
                  notEofOrValue(}, })
                  listener: endBlock(0, {, }, BlockKind(try statement))
                listener: beginCatchClause(catch)
                parseFormalParameters(catch, MemberKind.Catch)
                  parseFormalParametersRest((, MemberKind.Catch)
                    listener: beginFormalParameters((, MemberKind.Catch)
                    parseFormalParameter((, FormalParameterKind.mandatory, MemberKind.Catch)
                      parseMetadataStar(()
                        listener: beginMetadataStar(e)
                        listener: endMetadataStar(0)
                      listener: beginFormalParameter(e, MemberKind.Catch, null, null, null)
                      listener: handleNoType(()
                      ensureIdentifier((, formalParameterDeclaration)
                        listener: handleIdentifier(e, formalParameterDeclaration)
                      listener: handleFormalParameterWithoutValue(,)
                      listener: endFormalParameter(null, null, null, e, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
                    parseFormalParameter(,, FormalParameterKind.mandatory, MemberKind.Catch)
                      parseMetadataStar(,)
                        listener: beginMetadataStar(s)
                        listener: endMetadataStar(0)
                      listener: beginFormalParameter(s, MemberKind.Catch, null, null, null)
                      listener: handleNoType(,)
                      ensureIdentifier(,, formalParameterDeclaration)
                        listener: handleIdentifier(s, formalParameterDeclaration)
                      listener: handleFormalParameterWithoutValue())
                      listener: endFormalParameter(null, null, null, s, null, null, FormalParameterKind.mandatory, MemberKind.Catch)
                    listener: endFormalParameters(2, (, ), MemberKind.Catch)
                listener: endCatchClause({)
                parseBlock(), BlockKind(catch clause))
                  ensureBlock(), null, catch clause)
                  listener: beginBlock({, BlockKind(catch clause))
                  notEofOrValue(}, })
                  listener: endBlock(0, {, }, BlockKind(catch clause))
                listener: handleCatchBlock(null, catch, ,)
                listener: endTryStatement(1, try, null)
          notEofOrValue(}, })
          listener: endBlockFunctionBody(1, {, })
        listener: endTopLevelMethod(main, null, })
  listener: endTopLevelDeclaration()
  reportAllErrorTokens(main)
  listener: endCompilationUnit(1, )