What command should I use to force a reinstall of Firebase dependencies to fix the 'module not found' error?

To force a reinstall of all dependencies, including Firebase, you can first delete your `node_modules` folder and then run `npm install` (or `yarn install`). If you want to specifically target the Firebase cache, you can try `npm uninstall firebase` followed by `npm install firebase`, or similarly with yarn. Running `npm cache clean --force` or `yarn cache clean` before reinstalling can also help.