How to use the @firebase/app.registerVersion function in @firebase/app

*
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import firebase from '@firebase/app';
import { _FirebaseNamespace } from '@firebase/app-types/private';
import * as types from '@firebase/functions-types';
import { registerFunctions } from './src/config';

import { name, version } from './package.json';

registerFunctions(firebase as _FirebaseNamespace);
firebase.registerVersion(name, version);

declare module '@firebase/app-types' {
  interface FirebaseNamespace {
    functions?: {
      (app?: FirebaseApp): types.FirebaseFunctions;
      Functions: typeof types.FirebaseFunctions;
    };
  }
  interface FirebaseApp {
    functions?(region?: string): types.FirebaseFunctions;
  }
}

* You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import firebase from '@firebase/app';
import '@firebase/performance';
import { name, version } from '../package.json';

firebase.registerVersion(name, version, 'lite');

export default firebase;

*
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import firebase from '@firebase/app';
import { _FirebaseNamespace } from '@firebase/app-types/private';
import { registerFunctions } from './src/config';
import 'isomorphic-fetch';

import { name, version } from './package.json';

registerFunctions(firebase as _FirebaseNamespace);
firebase.registerVersion(name, version, 'node');

* you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import firebase from '@firebase/app';
import { name, version } from '../package.json';

firebase.registerVersion(name, version, 'app');

export default firebase;