1. Don't need to use any parameters for `this.getSettings()` since you already have that in `metadata.json`. 2. No need to use `this.initTranslation()` (line 3595 `extension.js`): > Consider this method deprecated. > Only specify gettext-domain in metadata.json. > GNOME Shell can automatically initiate the translation for you > when it sees the gettext-domain key in metadata.json. [Port Guide 45: Extension Utils](https://gjs.guide/extensions/upgrading/gnome-shell-45.html#extensionutils) 3. The default class you are exporting in `extension.js` is too large and that makes reviewing for the cleanup really hard. Please only hold the main logic there and move everything else to another class. 4. Please use `connectObject()` and `disconnectObject()` so it is easier to track for cleanup. 5. You don't have `this._tickId` in that class (line 720 `extension.js`). 6. You cannot call functions in global scope (line 48-49 `extension.js`): [EGO Review Guidelines: Initialization](https://gjs.guide/extensions/review-guidelines/review-guidelines.html#only-use-initialization-for-static-resources) 7. `this._isDestroyed` is a bad practice. Please remove that. 8. Timeout should be removed on destroy and before creating a new one (line 330, 393, 1209, 1364, 2016 `extension.js`): [EGO Review Guidelines: Timeout](https://gjs.guide/extensions/review-guidelines/review-guidelines.html#remove-main-loop-sources) 9. I recommend to use `onStopped` instead of `onComplete` for `ease`. 10. Remove all the unnecessary `=== 'function'` checks. 11. Remove all the unnecessary try-catch wrappers. You shouldn't use try-catch when nothing throws.