Sorry for delay to update my repo, now https://gitlab.com/raihan2000/visualizer is uptodate with v5, Is there any issue you have found? just let me know Thanks in Advance

1. The timeouts you are creating in `visual.js` can be created multiple times without removing the old ones. Please remove the timeout before creating a new one. 2. `lookupByURL()` is a bad practice: - line 11, 109 `prefs.js` - line 35 `visual.js` You can send `this` from the entry point to the class needing it (dependency injection). 3. I recommend to use `destroy()` instead of `onDestroy()`. At the end of that function you can do `super.destroy()`.