MDX: Fix alias imports

.changeset/fifty-elephants-double.md

@@ -0,0 +1,5 @@
+---
+'fumadocs-mdx': patch
+---
+
+Fix alias imports

packages/mdx/package.json

@@ -45,10 +45,10 @@
     "@mdx-js/mdx": "^3.1.0",
     "chokidar": "^4.0.3",
     "cross-spawn": "^7.0.6",
+    "esbuild": "^0.24.2",
     "estree-util-value-to-estree": "^3.2.1",
     "fast-glob": "^3.3.1",
     "gray-matter": "^4.0.3",
-    "jiti": "^2.4.2",
     "micromatch": "^4.0.8",
     "unist-util-visit": "^5.0.0",
     "zod": "^3.24.1"

packages/mdx/src/config/load.ts

@@ -1,10 +1,9 @@
 import * as path from 'node:path';
-import { pathToFileURL } from 'node:url';
-import { createJiti } from 'jiti';
 import type { DocCollection, MetaCollection } from '@/config/define';
 import { type GlobalConfig } from '@/config/types';
 import type { ProcessorOptions } from '@mdx-js/mdx';
 import { getDefaultMDXOptions } from '@/utils/mdx-options';
+import { pathToFileURL } from 'node:url';
 
 export function findConfigFile(): string {
   return path.resolve('source.config.ts');
@@ -26,20 +25,36 @@ export interface LoadedConfig {
 export type InternalDocCollection = DocCollection;
 export type InternalMetaCollection = MetaCollection;
 
-const jiti = createJiti(import.meta.url, {
-  moduleCache: false,
-});
-
 export async function loadConfig(configPath: string): Promise<LoadedConfig> {
-  const imported = await jiti
-    .import(pathToFileURL(configPath).href)
-    .catch((e) => {
-      throw new Error('failed to compile configuration file', e);
-    });
+  const outputPath = path.resolve('.source/source.config.mjs');
+  const { build } = await import('esbuild');
+  const transformed = await build({
+    entryPoints: [{ in: configPath, out: 'source.config' }],
+    bundle: true,
+    outdir: '.source',
+    target: 'node18',
+    write: true,
+    platform: 'node',
+    format: 'esm',
+    packages: 'external',
+    outExtension: {
+      '.js': '.mjs',
+    },
+    allowOverwrite: true,
+    splitting: true,
+  });
 
+  if (transformed.errors.length > 0) {
+    throw new Error('failed to compile configuration file');
+  }
+
+  const url = pathToFileURL(outputPath);
   const [err, config] = buildConfig(
     // every call to `loadConfig` will cause the previous cache to be ignored
-    imported as Record<string, unknown>,
+    (await import(`${url.href}?hash=${Date.now().toString()}`)) as Record<
+      string,
+      unknown
+    >,
   );
 
   if (err !== null) throw new Error(err);

pnpm-lock.yaml

@@ -773,6 +773,9 @@ importers:
       cross-spawn:
         specifier: ^7.0.6
         version: 7.0.6
+      esbuild:
+        specifier: ^0.24.2
+        version: 0.24.2
       estree-util-value-to-estree:
         specifier: ^3.2.1
         version: 3.2.1
@@ -782,9 +785,6 @@ importers:
       gray-matter:
         specifier: ^4.0.3
         version: 4.0.3
-      jiti:
-        specifier: ^2.4.2
-        version: 2.4.2
       micromatch:
         specifier: ^4.0.8
         version: 4.0.8
@@ -10358,7 +10358,8 @@ snapshots:
 
   [email protected]: {}
 
-  [email protected]: {}
+  [email protected]:
+    optional: true
 
   [email protected]: {}