Preval REPL — 2020 ~ 2025 — © Peter van der Zee —  Github    (This is a static analysis tool that will reduce standard JS code to a minimal subset of JS and tries to optimize it using only transforms)
Input (Plain JS only, can't do privates) 

            
          

        

      


      

        

          Console (Full trace output of Preval)
          Verbose mode:
            
            
            
          
        

        
      

    

    

      

        

          Normalized (shows normalized output after first pass but before more complicated heuristics)
        

        

            Output shows here after successful run
        

      


      

        

          Result (When successful, this should show the final output of Preval)