diff --git a/packages/firestore/exp-types/index.d.ts b/packages/firestore/exp-types/index.d.ts
index f27b50dea99..170a553a506 100644
--- a/packages/firestore/exp-types/index.d.ts
+++ b/packages/firestore/exp-types/index.d.ts
@@ -536,6 +536,11 @@ export interface LoadBundleTaskProgress {
 
 export type TaskState = 'Error' | 'Running' | 'Success';
 
+export function loadBundle(
+  firestore: FirebaseFirestore,
+  bundleData: ArrayBuffer | ReadableStream<Uint8Array> | string
+): LoadBundleTask;
+
 export type FirestoreErrorCode =
   | 'cancelled'
   | 'unknown'
diff --git a/packages/firestore/exp/src/api/database.ts b/packages/firestore/exp/src/api/database.ts
index 13e4be085dc..d0004141c16 100644
--- a/packages/firestore/exp/src/api/database.ts
+++ b/packages/firestore/exp/src/api/database.ts
@@ -50,6 +50,7 @@ import {
   indexedDbStoragePrefix,
   indexedDbClearPersistence
 } from '../../../src/local/indexeddb_persistence';
+import { LoadBundleTask } from '../../../src/api/bundle';
 
 /**
  * The root reference to the Firestore database and the entry point for the
@@ -299,9 +300,13 @@ export function terminate(
 export function loadBundle(
   firestore: firestore.FirebaseFirestore,
   bundleData: ArrayBuffer | ReadableStream<Uint8Array> | string
-): firestore.LoadBundleTask | null {
-  return null;
-  // const firestoreImpl = cast(firestore, Firestore);
-  // return firestoreImpl._getFirestoreClient()
-  // .then(firestoreClient => firestoreClient.loadBundle(bundleData));
+): LoadBundleTask {
+  const firestoreImpl = cast(firestore, Firestore);
+  const resultTask = new LoadBundleTask();
+  // eslint-disable-next-line @typescript-eslint/no-floating-promises
+  firestoreImpl._getFirestoreClient().then(firestoreClient => {
+    firestoreClient.loadBundle(bundleData, resultTask);
+  });
+
+  return resultTask;
 }
diff --git a/packages/firestore/exp/test/shim.ts b/packages/firestore/exp/test/shim.ts
index 618c176cedb..592ffa9c60b 100644
--- a/packages/firestore/exp/test/shim.ts
+++ b/packages/firestore/exp/test/shim.ts
@@ -72,6 +72,7 @@ import {
 import { UntypedFirestoreDataConverter } from '../../src/api/user_data_reader';
 import { isPartialObserver, PartialObserver } from '../../src/api/observer';
 import { isPlainObject } from '../../src/util/input_validation';
+import { LoadBundleTask } from '../../exp-types';
 
 export { GeoPoint, Blob, Timestamp } from '../index';
 
diff --git a/packages/firestore/src/api/database.ts b/packages/firestore/src/api/database.ts
index 9c496ee23e6..e196a56e5b7 100644
--- a/packages/firestore/src/api/database.ts
+++ b/packages/firestore/src/api/database.ts
@@ -112,6 +112,7 @@ import {
 import { UserDataWriter } from './user_data_writer';
 import { FirebaseAuthInternalName } from '@firebase/auth-interop-types';
 import { Provider } from '@firebase/component';
+import { LoadBundleTask } from './bundle';
 
 // settings() defaults:
 const DEFAULT_HOST = 'firestore.googleapis.com';
@@ -498,7 +499,9 @@ export class Firestore implements firestore.FirebaseFirestore, FirebaseService {
     bundleData: ArrayBuffer | ReadableStream<Uint8Array> | string
   ): firestore.LoadBundleTask {
     this.ensureClientConfigured();
-    return this._firestoreClient!.loadBundle(bundleData);
+    const resultTask = new LoadBundleTask();
+    this._firestoreClient!.loadBundle(bundleData, resultTask);
+    return resultTask;
   }
 
   ensureClientConfigured(): FirestoreClient {
diff --git a/packages/firestore/src/core/firestore_client.ts b/packages/firestore/src/core/firestore_client.ts
index d597e459a45..011c92500b0 100644
--- a/packages/firestore/src/core/firestore_client.ts
+++ b/packages/firestore/src/core/firestore_client.ts
@@ -15,7 +15,6 @@
  * limitations under the License.
  */
 
-import * as firestore from '@firebase/firestore-types';
 import { CredentialsProvider } from '../api/credentials';
 import { User } from '../auth/user';
 import { LocalStore } from '../local/local_store';
@@ -515,8 +514,9 @@ export class FirestoreClient {
   }
 
   loadBundle(
-    data: ReadableStream<Uint8Array> | ArrayBuffer | string
-  ): firestore.LoadBundleTask {
+    data: ReadableStream<Uint8Array> | ArrayBuffer | string,
+    resultTask: LoadBundleTask
+  ): void {
     this.verifyNotTerminated();
 
     let content: ReadableStream<Uint8Array> | ArrayBuffer;
@@ -526,14 +526,11 @@ export class FirestoreClient {
       content = data;
     }
     const reader = new BundleReader(toByteStreamReader(content));
-    const task = new LoadBundleTask();
     this.asyncQueue.enqueueAndForget(async () => {
-      loadBundle(this.syncEngine, reader, task);
-      return task.catch(e => {
+      loadBundle(this.syncEngine, reader, resultTask);
+      return resultTask.catch(e => {
         logWarn(LOG_TAG, `Loading bundle failed with ${e}`);
       });
     });
-
-    return task;
   }
 }