diff --git a/tsconfig.base.json b/tsconfig.base.json
index d0e7afc..1c399df 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -1,5 +1,5 @@
 {
-  "exclude": ["cjs", "esm"],
+  "include": ["src"],
   "compilerOptions": {
     "target": "esnext",
     "moduleResolution": "node",