Merge branch 'mtewani/fix-non-idempotent-emulator-fdc' of https://github.com/firebase/firebase-js-sdk into mtewani/fix-non-idempotent-emulator-fdc

Author: maneesht

.changeset/funny-weeks-attack.md

@@ -0,0 +1,5 @@
+---
+"@firebase/data-connect": patch
+---
+
+Fixed issue where multiple calls to connectDataConnectEmulator caused an exception

common/api-review/data-connect.api.md

@@ -11,6 +11,9 @@ import { FirebaseError } from '@firebase/util';
 import { LogLevelString } from '@firebase/logger';
 import { Provider } from '@firebase/component';
 
+// @public (undocumented)
+export function areTransportOptionsEqual(transportOptions1: TransportOptions, transportOptions2: TransportOptions): boolean;
+
 // @public (undocumented)
 export interface CancellableOperation<T> extends PromiseLike<{
     data: T;
@@ -159,6 +162,9 @@ export function queryRef<Data>(dcInstance: DataConnect, queryName: string): Quer
 // @public
 export function queryRef<Data, Variables>(dcInstance: DataConnect, queryName: string, variables: Variables): QueryRef<Data, Variables>;
 
+// @public (undocumented)
+export function queryRef<Data, Variables>(dcInstance: DataConnect, serializedRef: SerializedRef<Data, Variables>): QueryRef<Data, Variables>;
+
 // @public
 export interface QueryResult<Data, Variables> extends DataConnectResult<Data, Variables> {
     // (undocumented)