diff --git a/tsconfig.json b/tsconfig.json
index d717e7f..b6cdf34 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -27,7 +27,8 @@
     "noEmit": true,
     "resolveJsonModule": true,
     "skipLibCheck": false,
-    "strict": true
+    "strict": true,
+    "isolatedModules": true
   },
   "include": [
     "src"
diff --git a/tsconfig.test.json b/tsconfig.test.json
index f8146db..65ffdd4 100644
--- a/tsconfig.test.json
+++ b/tsconfig.test.json
@@ -1,7 +1,6 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
-    "module": "commonjs",
-    "isolatedModules": true
+    "module": "commonjs"
   }
 }
\ No newline at end of file