next.config.ts

import type { NextConfig } from 'next';
import { resolveDefaultOrigin } from './lib/seo/env';

/**
 * Environment-scoped origin.
 *
 * `next.config.ts` is evaluated when the Next.js server boots (dev, build, and
 * `next start`). If no `SITE_ORIGIN` was provided for this process, we bind the
 * default origin for the current environment here. That guarantees a preview or
 * staging `next start` defaults to a non-production origin and can never fall
 * back to production's canonical host.
 *
 * An explicit `SITE_ORIGIN=...` always wins (the `??=` leaves it untouched),
 * which is what production deployments and the e2e harness rely on.
 */
process.env.SITE_ORIGIN ??= resolveDefaultOrigin();

const nextConfig: NextConfig = {
  // Nothing exotic is required for the SEO patterns in this starter. Keeping
  // the config minimal keeps the "what the frontend is responsible for" surface
  // honest: correctness lives in the route + lib code, not in build magic.
  reactStrictMode: true,
};

export default nextConfig;