ui: seperate worker build

packages/ui-default/components/messagepad/reducers/index.ts

@@ -0,0 +1,14 @@
+import { combineReducers } from 'redux';
+import activeId from './activeId';
+import dialogues from './dialogues';
+import inputs from './inputs';
+import isPosting from './isPosting';
+
+const reducer = combineReducers({
+  activeId,
+  dialogues,
+  inputs,
+  isPosting,
+});
+
+export default reducer;