Hello, when using webpack, I'm getting the following exceptions

ERROR in C:\Users\usta\Downloads\angular2\node_modules\angularfire2\utils\firebase_object_observable.d.ts
(6,17): error TS1112: A class member cannot be declared optional.

ERROR in C:\Users\usta\Downloads\angular2\node_modules\angularfire2\providers\auth.d.ts
(12,20): error TS1112: A class member cannot be declared optional.