diff --git a/vitest.config.ts b/vitest.config.ts
index 50e8eee..efcb100 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -5,6 +5,7 @@ export default defineConfig({
     environment: 'jsdom',
     coverage: {
       provider: 'istanbul',
+      include: ['src/*.ts']
     },
   },
 })