chore(config): change next-config from mjs to typescript (#1861)

Dockerfile

@@ -39,7 +39,7 @@ RUN mkdir -p /var/cache/nginx && \
     touch /run/nginx/nginx.pid && \
     mkdir -p /etc/nginx/templates /etc/nginx/ssl/certs
 
-COPY --from=builder /app/apps/nextjs/next.config.mjs .
+COPY --from=builder /app/apps/nextjs/next.config.ts .
 COPY --from=builder /app/apps/nextjs/package.json .
 
 COPY --from=builder /app/apps/tasks/tasks.cjs ./apps/tasks/tasks.cjs

apps/nextjs/next.config.ts

@@ -3,6 +3,7 @@ import "@homarr/auth/env.mjs";
 import "@homarr/db/env.mjs";
 import "@homarr/common/env.mjs";
 
+import type { NextConfig } from "next";
 import MillionLint from "@million/lint";
 import createNextIntlPlugin from "next-intl/plugin";
 
@@ -11,14 +12,22 @@ import "./src/env.mjs";
 // Package path does not work... so we need to use relative path
 const withNextIntl = createNextIntlPlugin("../../packages/translation/src/request.ts");
 
-/** @type {import("next").NextConfig} */
-const nextConfig = {
+interface WebpackConfig {
+  module: {
+    rules: {
+      test: RegExp;
+      loader: string;
+    }[];
+  };
+}
+
+const nextConfig: NextConfig = {
   output: "standalone",
   reactStrictMode: true,
   /** We already do linting and typechecking as separate tasks in CI */
   eslint: { ignoreDuringBuilds: true },
   typescript: { ignoreBuildErrors: true },
-  webpack: (config, { isServer }) => {
+  webpack: (config: WebpackConfig, { isServer }) => {
     if (isServer) {
       config.module.rules.push({
         test: /\.node$/,
@@ -38,6 +47,7 @@ const nextConfig = {
 };
 
 // Skip transform is used because of webpack loader, without it for example 'Tooltip.Floating' will not work and show an error
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 const withMillionLint = MillionLint.next({ rsc: true, skipTransform: true, telemetry: false });
 
 export default withNextIntl(nextConfig);