diff --git a/tsconfig.json b/tsconfig.json
index e827bbc..edd05c0 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,5 +5,6 @@
     "erasableSyntaxOnly": true
   },
   "extends": "@tsconfig/vite-react/tsconfig.json",
-  "include": ["src/**/*.ts", "src/**/*.tsx"]
+  "include": ["src/**/*.ts", "src/**/*.tsx"],
+  "exclude": ["src/**/*.test.ts", "src/**/*.test.tsx"]
 }
diff --git a/vitest.config.ts b/vitest.config.ts
index 8c90c2b..038f6f4 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -1,7 +1,8 @@
-import { defineConfig } from "vitest/config";
+import { configDefaults, defineConfig } from "vitest/config";
 
 export default defineConfig({
   test: {
     clearMocks: true,
+    exclude: [...configDefaults.exclude, "_esm/**"],
   },
 });