diff --git a/src/interfaces/common/TransactionInfo.ts b/src/interfaces/common/TransactionInfo.ts
index 771950a..fed5a5c 100644
--- a/src/interfaces/common/TransactionInfo.ts
+++ b/src/interfaces/common/TransactionInfo.ts
@@ -27,4 +27,4 @@ interface TransactionInfo {
 
 export default TransactionInfo;
 
-export { Input, Output };
\ No newline at end of file
+export type { Input, Output };
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index 8fcdc2e..295ac0c 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -19,7 +19,7 @@
     "noEmit": true,
     "jsx": "preserve",
     "incremental": true,
-    "isolatedModules": false,
+    "isolatedModules": true,
     "baseUrl": "./",
     "paths": {
       "@/*": [