My original comment can be found in #46. While the new `manifest.json` in #46 was tested in Chrome, the Manifest V3 [will not work in Firefox](https://blog.mozilla.org/addons/2022/05/18/manifest-v3-in-firefox-recap-next-steps/): > ... we expect to launch MV3 support for all users by the end of 2022. This breaks cross-browser compatibility for this starter for at least Firefox. Brave apparently [plans to continue Manifest V2 support past sunset](https://github.com/brave/brave-browser/issues/20059). This is complicated further by the fact that new Manifest V2 extensions are [already not supported by Chrome](https://developer.chrome.com/docs/extensions/mv3/mv2-sunset/). I think we need a new approach to handle how `manifest.json` is generated for the `dist`, perhaps on a per-browser basis?