diff --git a/packages/web-api-hooks/src/index.ts b/packages/web-api-hooks/src/index.ts
index 97a5d12..4516a0e 100644
--- a/packages/web-api-hooks/src/index.ts
+++ b/packages/web-api-hooks/src/index.ts
@@ -1,4 +1,10 @@
-export { EventArgs, EventMap, JSONArray, JSONObject, JSONValue } from './types';
+export type {
+  EventArgs,
+  EventMap,
+  JSONArray,
+  JSONObject,
+  JSONValue,
+} from './types';
 
 export { default as useDeviceMotion } from './useDeviceMotion';
 export { default as useDeviceOrientation } from './useDeviceOrientation';
diff --git a/tsconfig.json b/tsconfig.json
index b3c7477..d0d158e 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,7 +6,7 @@
     "module": "ESNext",
     "moduleResolution": "Node",
     "esModuleInterop": true,
-    // TODO: "isolatedModules": true,
+    "isolatedModules": true,
     "jsx": "react"
   },
   "exclude": ["**/pkg/"]