diff --git a/tsconfig.json b/tsconfig.json
index 5991e1c..6d88579 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -11,6 +11,6 @@
     "forceConsistentCasingInFileNames": true,
     "skipLibCheck": true,
   },
-    "include": ["src/*.ts"],
+    "include": ["src/*", "src/demo/*"],
     "exclude": ["src/build"]
 }
\ No newline at end of file