shikijs
diff --git a/‎packages/markdown-it/src/index.ts‎
Lines changed: 10 additions & 1 deletion b/‎packages/markdown-it/src/index.ts‎
Lines changed: 10 additions & 1 deletion
diff --git a/‎packages/markdown-it/test/fixtures/lang-alias.md‎
Lines changed: 7 additions & 0 deletions b/‎packages/markdown-it/test/fixtures/lang-alias.md‎
Lines changed: 7 additions & 0 deletions
diff --git a/‎packages/markdown-it/test/fixtures/lang-alias.out.html‎
Lines changed: 2 additions & 0 deletions b/‎packages/markdown-it/test/fixtures/lang-alias.out.html‎
Lines changed: 2 additions & 0 deletions
diff --git a/‎packages/markdown-it/test/index.test.ts‎
Lines changed: 16 additions & 0 deletions b/‎packages/markdown-it/test/index.test.ts‎
Lines changed: 16 additions & 0 deletions
@@ -13,16 +13,25 @@ export type MarkdownItShikiOptions = MarkdownItShikiSetupOptions & {
    * @default Object.keys(bundledLanguages)
    */
   langs?: Array<LanguageInput | BuiltinLanguage>
+
+  /**
+   * Alias of languages
+   * @example { 'my-lang': 'javascript' }
+   */
+  langAlias?: Record<string, string>
 }
 
 export default async function markdownItShiki(options: MarkdownItShikiOptions) {
   const themeNames = ('themes' in options
     ? Object.values(options.themes)
     : [options.theme]).filter(Boolean) as BuiltinTheme[]
+  const langs = options.langs || Object.keys(bundledLanguages)
+  const langAlias = options.langAlias || {}
 
   const highlighter = await createHighlighter({
     themes: themeNames,
-    langs: options.langs || Object.keys(bundledLanguages) as BuiltinLanguage[],
+    langs,
+    langAlias,
   })
 
   return function (markdownit: MarkdownIt) {
 
@@ -64,3 +64,19 @@ it('run for default language', { timeout: 10_000 }, async () => {
 
   await expect(result).toMatchFileSnapshot('./fixtures/c.out.html')
 })
+
+it('lang-alias', async () => {
+  const md = MarkdownIt()
+  md.use(await Shiki({
+    langs: ['js'],
+    theme: 'vitesse-light',
+    langAlias: {
+      mylang: 'javascript',
+      mylang2: 'js', // nested alias
+    },
+  }))
+
+  const result = md.render(await fs.readFile(new URL('./fixtures/lang-alias.md', import.meta.url), 'utf-8'))
+
+  await expect(result).toMatchFileSnapshot('./fixtures/lang-alias.out.html')
+})