property 27orderby 27 does not exist on type 27angularfirestorecollection 3cdocumentdata 3e

1this.announcementCollectionRef = afs.collection<Announcement>('announcements', ref => ref.orderBy('createdAt', 'desc'));
2this.announcements = this.announcementCollectionRef.snapshotChanges().map(actions => {
3    return actions.map(a => {
4        const data = a.payload.doc.data() as AnnouncementId;
5        const id = a.payload.doc.id;
6        return { id, ...data };
7    });
8});
9