1. What's the reason for importing `stylesheet.css` in dark and light stylesheet? Isn't it already imported when the extension is loaded? 2. If you want to hold settings in the property (line 6 `prefs.js`), you need to cleanup on window close request: ```js window.connect('close-request', () => { this._settings = null; }); ```

1. In my testing, it was necessary to import 'stylesheet.css'. Apparently, only either of the -dark and -light variants is being used when both of these files exist, otherwise, if one or both of the two files is missing, only stylesheet.css is being used. 2. Thanks, I'll add that! I followed this guide for my typescript migration: https://gjs.guide/extensions/development/typescript.html#prefs-ts Not sure who is responsible for it's contents but if you do know, they probably should add the cleanup there as well.