move app to app/ subdir

app/next.config.mjs

@@ -0,0 +1,61 @@
+import nextRoutes from "nextjs-routes/config";
+import { withSentryConfig } from "@sentry/nextjs";
+
+/**
+ * Run `build` or `dev` with `SKIP_ENV_VALIDATION` to skip env validation. This is especially useful
+ * for Docker builds.
+ */
+const { env } = await import("./src/env.mjs");
+
+/** @type {import("next").NextConfig} */
+let config = {
+  reactStrictMode: true,
+
+  /**
+   * If you have `experimental: { appDir: true }` set, then you must comment the below `i18n` config
+   * out.
+   *
+   * @see https://github.com/vercel/next.js/issues/41980
+   */
+  i18n: {
+    locales: ["en"],
+    defaultLocale: "en",
+  },
+
+  rewrites: async () => [
+    {
+      source: "/ingest/:path*",
+      destination: "https://app.posthog.com/:path*",
+    },
+  ],
+
+  webpack: (config) => {
+    config.module.rules.push({
+      test: /\.txt$/,
+      use: "raw-loader",
+    });
+    return config;
+  },
+};
+
+config = nextRoutes()(config);
+
+if (env.NEXT_PUBLIC_SENTRY_DSN && env.SENTRY_AUTH_TOKEN) {
+  // @ts-expect-error - `withSentryConfig` is not typed correctly
+  config = withSentryConfig(
+    config,
+    {
+      authToken: env.SENTRY_AUTH_TOKEN,
+      silent: true,
+      org: "openpipe",
+      project: "openpipe",
+    },
+    {
+      widenClientFileUpload: true,
+      tunnelRoute: "/monitoring",
+      disableLogger: true,
+    },
+  );
+}
+
+export default config;