private _childRemovedCallback()

in packages/geofire/src/GeoQuery.ts [311:325]

• 12 lines of code
• 5 McCabe index (conditional complexity)

  private _childRemovedCallback(locationDataSnapshot: DatabaseTypes.DataSnapshot): void {
    const key: string = geoFireGetKey(locationDataSnapshot);
    if (key in this._locationsTracked) {
      this._firebaseRef.child(key).once('value', (snapshot: DatabaseTypes.DataSnapshot) => {
        const location: Geopoint = (snapshot.val() === null) ? null : decodeGeoFireObject(snapshot.val());
        const geohash: Geohash = (location !== null) ? geohashForLocation(location) : null;
        // Only notify observers if key is not part of any other geohash query or this actually might not be
        // a key exited event, but a key moved or entered event. These events will be triggered by updates
        // to a different query
        if (!this._geohashInSomeQuery(geohash)) {
          this._removeLocation(key, location);
        }
      });
    }
  }