Where is the documentation for the Tanstack Start Vite plugin?

Looking for the API documentation for the vite plugin:

@tanstack/react-start/plugin/vite

@tanstack/react-start/plugin/vite

@tanstack/react-start/plugin/vite

@tanstack/react-start/plugin/vite

I'm currently configuring it like the following but unsure if that is correct:

    tanstackStart({
      customViteReactPlugin: true,
      router: {
        virtualRouteConfig: './src/routes.ts',
      },
    }),

    tanstackStart({
      customViteReactPlugin: true,
      router: {
        virtualRouteConfig: './src/routes.ts',
      },
    }),

    tanstackStart({
      customViteReactPlugin: true,
      router: {
        virtualRouteConfig: './src/routes.ts',
      },
    }),

    tanstackStart({
      customViteReactPlugin: true,
      router: {
        virtualRouteConfig: './src/routes.ts',
      },
    }),