[router-vite-plugin] Ability to prepend routeTree.gen.ts file content via an option.

[mgcrea]

Would be nice to be able to easily prepend the content of the router file, eg.

Use case for me is to prepend /* eslint-disable @typescript-eslint/no-explicit-any */ to pass eslint validation.

  plugins: [react(), TanStackRouterVite({ generatedRouteTree: "src/config/routeTree.gen.ts", prependRouteTree: "/* eslint-disable @typescript-eslint/no-explicit-any */\n" })],

[SeanCassiere]

You can ignore the routeTree.gen.ts file being linted entirely in your ESLint config.

{
  "ignorePatterns": ["routeTree.gen.ts"],
}

Since this file is being generated by the router-cli, you can consider it to be "safe" and relies on not being interfered with for the types to work.