coolify-examples/node/tanstack-start/ssr/app/routes/api/env.ts

import { json } from '@tanstack/react-start';
import { createAPIFileRoute } from '@tanstack/react-start/api';

// Runtime env vars (read at server startup)
const RUNTIME_PRIVATE_VAR = process.env.RUNTIME_PRIVATE_VAR || 'default-value';
const RUNTIME_PUBLIC_VAR = process.env.RUNTIME_PUBLIC_VAR || 'default-value';

console.log('=== Runtime Variables ===');
console.log('RUNTIME_PRIVATE_VAR:', RUNTIME_PRIVATE_VAR);
console.log('RUNTIME_PUBLIC_VAR:', RUNTIME_PUBLIC_VAR);

export const APIRoute = createAPIFileRoute('/api/env')({
  GET: () => {
    return json({
      runtimePrivateVar: RUNTIME_PRIVATE_VAR,
      runtimePublicVar: RUNTIME_PUBLIC_VAR,
    });
  },
});