Disable logger middleware in production builds.

src/store.tsx

@@ -9,8 +9,6 @@ import promiseMiddleware from './promise-middleware';
 
 import * as EteSync from './api/EteSync';
 
-const loggerMiddleware = createLogger();
-
 export interface FetchType<T> {
   value: T | null;
   fetching?: boolean;
@@ -175,13 +173,18 @@ const reducers = combineReducers({
   })
 });
 
-export const store = createStore(
-  reducers,
-  applyMiddleware(
+let middleware = [
   thunkMiddleware,
   promiseMiddleware,
-    loggerMiddleware
-  )
+];
+
+if (process.env.NODE_ENV !== 'production') {
+  middleware.push(createLogger());
+}
+
+export const store = createStore(
+  reducers,
+  applyMiddleware(...middleware)
 );
 
 export const persistor = persistStore(store);