Appears to be required for `patch-package` to do its thing (at least patch-package suggests you use `postinstall`, not really sure why though since it isn't ran on `npm install`).
@@ -24,6 +24,7 @@ or from git:
git clone https://github.com/johni0702/mumble-web
cd mumble-web
npm install
+npm run postinstall
npm run build
```