MDX: Make Next.js config ESM only

.changeset/bumpy-suits-enter.md

@@ -0,0 +1,7 @@
+---
+'fumadocs-mdx': minor
+---
+
+**Make Next.js config ESM only**
+
+Newer Next.js supported `.mts` extension for Next.js config files, see [Next.js docs](https://nextjs.org/docs/app/api-reference/config/typescript#using-nodejs-native-typescript-resolver-for-nextconfigts) for more info.

.changeset/fair-houses-learn.md

@@ -1,6 +0,0 @@
----
-'@fumadocs/story': patch
-'fumadocs-typescript': patch
----
-
-Bump `ts-morph`

packages/mdx/package.json

@@ -17,44 +17,27 @@
     "dist"
   ],
   "type": "module",
-  "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "exports": {
+    ".": "./dist/index.js",
+    "./bin": "./dist/bin.js",
+    "./bun": "./dist/bun/index.js",
+    "./config": "./dist/config/index.js",
+    "./next": "./dist/next/index.js",
+    "./node/loader": "./dist/node/loader.js",
+    "./plugins/index-file": "./dist/plugins/index-file.js",
+    "./plugins/json-schema": "./dist/plugins/json-schema.js",
+    "./plugins/last-modified": "./dist/plugins/last-modified.js",
+    "./runtime/browser": "./dist/runtime/browser.js",
+    "./runtime/dynamic": "./dist/runtime/dynamic.js",
+    "./runtime/server": "./dist/runtime/server.js",
+    "./runtime/types": "./dist/runtime/types.js",
+    "./vite": "./dist/vite/index.js",
+    "./webpack/mdx": "./dist/webpack/mdx.js",
+    "./webpack/meta": "./dist/webpack/meta.js",
+    "./package.json": "./package.json",
     "./loader-mdx": "./loader-mdx.cjs",
-    "./loader-meta": "./loader-meta.cjs",
-    "./config": {
-      "types": "./dist/config/index.d.ts",
-      "import": "./dist/config/index.js"
-    },
-    "./next": {
-      "types": "./dist/next/index.d.ts",
-      "import": "./dist/next/index.js",
-      "require": "./dist/next/index.cjs"
-    },
-    "./vite": {
-      "types": "./dist/vite/index.d.ts",
-      "import": "./dist/vite/index.js"
-    },
-    ".": {
-      "types": "./dist/index.d.ts",
-      "import": "./dist/index.js"
-    },
-    "./runtime/*": {
-      "types": "./dist/runtime/*.d.ts",
-      "import": "./dist/runtime/*.js"
-    },
-    "./node/loader": {
-      "types": "./dist/node/loader.d.ts",
-      "import": "./dist/node/loader.js"
-    },
-    "./bun": {
-      "types": "./dist/bun/index.d.ts",
-      "import": "./dist/bun/index.js"
-    },
-    "./plugins/*": {
-      "types": "./dist/plugins/*.d.ts",
-      "import": "./dist/plugins/*.js"
-    }
+    "./loader-meta": "./loader-meta.cjs"
   },
   "publishConfig": {
     "access": "public"

packages/mdx/tsdown.config.ts

@@ -9,39 +9,28 @@ const noExternal = [
   'fumadocs-core/mdx-plugins/remark-llms',
 ];
 
-export default defineConfig([
-  {
-    entry: [
-      './src/{index,bin}.ts',
-      './src/{config,next,vite,bun}/index.ts',
-      './src/webpack/{mdx,meta}.ts',
-      './src/node/loader.ts',
-      './src/runtime/*.{ts,tsx}',
-      './src/plugins/*.ts',
-    ],
-    format: 'esm',
-    dts: true,
-    fixedExtension: false,
-    target: 'node22',
-    deps: {
-      onlyBundle: noExternal,
-      alwaysBundle: noExternal,
-      neverBundle: external,
+export default defineConfig({
+  entry: [
+    './src/{index,bin}.ts',
+    './src/{config,next,vite,bun}/index.ts',
+    './src/webpack/{mdx,meta}.ts',
+    './src/node/loader.ts',
+    './src/runtime/*.{ts,tsx}',
+    './src/plugins/*.ts',
+  ],
+  format: 'esm',
+  dts: true,
+  fixedExtension: false,
+  target: 'node22',
+  exports: {
+    customExports: {
+      './loader-mdx': './loader-mdx.cjs',
+      './loader-meta': './loader-meta.cjs',
     },
   },
-  {
-    outDir: 'dist/next',
-    // ensure Next.js CJS config compatibility
-    // because next.config.ts by default uses CJS
-    entry: ['./src/next/index.ts'],
-    format: 'cjs',
-    dts: false,
-    fixedExtension: false,
-    target: 'node22',
-    deps: {
-      onlyBundle: noExternal,
-      alwaysBundle: noExternal,
-      neverBundle: external,
-    },
+  deps: {
+    onlyBundle: noExternal,
+    alwaysBundle: noExternal,
+    neverBundle: external,
   },
-]);
+});