anchor.diff:                  UnusedDeclarations.refresh.fire fileName
                   SimplifyName.refresh.fire fileName
                   CodeOutline.refresh.fire (undefined)
  -                (Uri.file fileName, (mapResult result |> snd |> Seq.map fst |> ResizeArray)) |> currentDiagnostic.set  )
  +                (Uri.file fileName, (mapResult result |> snd |> Seq.map fst |> ResizeArray)) |> currentDiagnostic.set
  +                Some fileName
  +            else
  +                None)
   
       let private parseFile (file : TextDocument) =
           match file with
  
positive.code:             let path = file.fileName
              match Project.find path with
              | Choice1Of3 _ -> parse file
              | Choice2Of3 () -> Promise.lift (null |> unbox)
              | Choice3Of3 (Some p) ->
                  p
                  |> Project.load
                  |> Promise.bind (fun _ -> parse file)
              | Choice3Of3 None -> parse file
          | _ -> Promise.lift (null |> unbox)
  
      let mutable private timer = None
  
  
negative.code:         if JS.isDefined event then
              parseFile event
              |> Promise.bind (fun n ->
                  match n with
                  | Some _fileName -> LanguageService.projectsInBackground event.fileName
                  | None -> Promise.lift ()
              )
          else
              Promise.lift ()
  