diff --git a/vitest.config.ts b/vitest.config.mjs
similarity index 92%
rename from vitest.config.ts
rename to vitest.config.mjs
index a1278c15d..d684b4c17 100644
--- a/vitest.config.ts
+++ b/vitest.config.mjs
@@ -1,3 +1,4 @@
+// @ts-check
 import { defineConfig } from 'vitest/config';
 
 export default defineConfig({