anchor.diff:              Ok fsprojPath
   
       let language = argLanguage args
  +    let lang =
  +        match language with
  +        | JavaScript -> "JS"
  +        | TypeScript -> "TypeScript"
  +        | Python -> "Python"
  +        | Php -> "PHP"
  +        | Dart -> "Dart"
  +
  +    Log.always($"Fable: F# to {lang} compiler " + Literals.VERSION)
  +    Log.always("Thanks to the contributor! @" + Contributors.getRandom() + "\n")
  +
       let typedArrays = args.FlagOr("--typedArrays", true)
       let outDir = args.Value("-o", "--outDir") |> Option.map normalizeAbsolutePath
       let outDirLast = outDir |> Option.bind (fun outDir -> outDir.TrimEnd('/').Split('/') |> Array.tryLast) |> Option.defaultValue ""
  
positive.code:             match commands with
              | ["--version"] -> ()
              | _ ->
                  Log.always("Fable: F# to JS compiler " + Literals.VERSION)
                  Log.always("Thanks to the contributor! @" + Contributors.getRandom() + "\n")
                  if args.FlagEnabled "--verbose" then
                      Log.makeVerbose()
  
  
negative.code:     args.Value("--lang", "--language")
      |> Option.orElseWith (fun () -> if args.FlagEnabled("--typescript") then Some "ts" else None) // Compatibility with "--typescript"
      |> Option.map (fun lang -> lang.ToLower())
      |> Option.defaultWith (fun () ->
          // Set default language based on name of executing process (fable tool).
          let proc = System.Reflection.Assembly.GetEntryAssembly().Location
          let fileName = Path.GetFileNameWithoutExtension(proc)
          match fileName with
          | "fable-py" -> "py"
          | _ -> "js"
      )
      |> (function
      | "js" | "javascript" | "JavaScript" -> JavaScript
      | "ts" | "typescript" | "TypeScript" -> TypeScript
      | "py" | "python" | "Python" -> Python
      | "php" | "Php" | "PHP" -> Php
      | "dart" -> Dart
      | _ -> JavaScript)
  
  type Runner =
    static member Run(args: CliArgs, rootDir: string, runProc: RunProcess option, ?fsprojPath: string, ?watch) = result {
  