Core: Enable lazy on rehypeCode by default

Author: fuma-nama

.changeset/major-candies-grab.md

@@ -0,0 +1,5 @@
+---
+'fumadocs-core': minor
+---
+
+Enable `lazy` on `rehypeCode` by default

packages/core/src/mdx-plugins/rehype-code.ts

@@ -49,6 +49,7 @@ const metaValues: MetaValue[] = [
 ];
 
 export const rehypeCodeDefaultOptions: RehypeCodeOptions = {
+  lazy: true,
   themes: defaultThemes,
   defaultColor: false,
   defaultLanguage: 'plaintext',

packages/mdx/src/utils/mdx-options.ts

@@ -82,14 +82,7 @@ export function getDefaultMDXOptions({
 
   const rehypePlugins = pluginOption(
     (v) => [
-      rehypeCodeOptions !== false && [
-        plugins.rehypeCode,
-        {
-          lazy: true,
-          langs: ['ts', 'js', 'html', 'tsx', 'mdx'],
-          ...rehypeCodeOptions,
-        },
-      ],
+      rehypeCodeOptions !== false && [plugins.rehypeCode, rehypeCodeOptions],
       ...v,
       [plugins.rehypeToc],
     ],