Build Configuration

In Vercel, your build configuration can be updated at Settings > General > Build & Development Settings.

Figure: Vercel Build Settings

If your package.json has a "build" script like tinacms build && <your-site-build-cmd>, this likely doesn't need to be changed. If your Vercel config is not running a custom build script (e.g next build instead of npm run build), you would have to change this to tinacms build && next build

Environment variables

Assuming that your Tina clientID and token are setup as environment variables, you will need to add those to the Vercel "Environment Variables" tab for your project.