diff --git a/packages/nuxt/src/core/app.ts b/packages/nuxt/src/core/app.ts
index 24aa1e493375..67cc4d54c6e9 100644
--- a/packages/nuxt/src/core/app.ts
+++ b/packages/nuxt/src/core/app.ts
@@ -150,8 +150,8 @@ export async function resolveApp (nuxt: Nuxt, app: NuxtApp) {
       ...(config.plugins || []),
       ...config.srcDir
         ? await resolveFiles(config.srcDir, [
-          `${pluginDir}/*.{ts,js,mjs,cjs,mts,cts}`,
-          `${pluginDir}/*/index.*{ts,js,mjs,cjs,mts,cts}` // TODO: remove, only scan top-level plugins #18418
+          `${pluginDir}/*{${nuxt.options.extensions.join(',')}}`,
+          `${pluginDir}/*/index{${nuxt.options.extensions.join(',')}}` // TODO: remove, only scan top-level plugins #18418
         ])
         : []
     ].map(plugin => normalizePlugin(plugin as NuxtPlugin)))
diff --git a/packages/nuxt/src/core/plugins/plugin-metadata.ts b/packages/nuxt/src/core/plugins/plugin-metadata.ts
index b77678caa36c..bd29f61a38a9 100644
--- a/packages/nuxt/src/core/plugins/plugin-metadata.ts
+++ b/packages/nuxt/src/core/plugins/plugin-metadata.ts
@@ -47,7 +47,7 @@ export async function extractMetadata (code: string) {
   if (metaCache[code]) {
     return metaCache[code]
   }
-  const js = await transform(code, { loader: 'ts' })
+  const js = await transform(code, { loader: 'tsx' })
   walk(parse(js.code, {
     sourceType: 'module',
     ecmaVersion: 'latest'
diff --git a/packages/nuxt/test/plugin-metadata.test.ts b/packages/nuxt/test/plugin-metadata.test.ts
index 2d12a2f403dc..09a88f0827ca 100644
--- a/packages/nuxt/test/plugin-metadata.test.ts
+++ b/packages/nuxt/test/plugin-metadata.test.ts
@@ -10,7 +10,7 @@ describe('plugin-metadata', () => {
       name: 'test',
       enforce: 'post',
       hooks: { 'app:mounted': () => {} },
-      setup: () => {},
+      setup: () => { return { provide: { jsx: '[JSX]' } } },
       order: 1
     })
 
@@ -19,7 +19,7 @@ describe('plugin-metadata', () => {
 
       const meta = await extractMetadata([
         'export default defineNuxtPlugin({',
-        ...obj.map(([key, value]) => `${key}: ${typeof value === 'function' ? value.toString() : JSON.stringify(value)},`),
+        ...obj.map(([key, value]) => `${key}: ${typeof value === 'function' ? value.toString().replace('"[JSX]"', '() => <span>JSX</span>') : JSON.stringify(value)},`),
         '})'
       ].join('\n'))