adding index

Author: Brian Chen

packages/firebase/index.d.ts

@@ -6060,6 +6060,13 @@ declare namespace firebase.firestore {
      */
     app: firebase.app.App;
 
+    /**
+     * Clears the persistence cache. This can only be called when the client is not running.
+     *
+     * @return A promise that is resolved once the persistence has been cleared.
+     */
+    clearPersistence(): Promise<void>;
+
     /**
      * Re-enables use of the network for this Firestore instance after a prior
      * call to {@link firebase.firestore.Firestore.disableNetwork

packages/firestore-types/index.d.ts

@@ -216,6 +216,13 @@ export class FirebaseFirestore {
    */
   app: any;
 
+  /**
+   * Clears the persistence cache. This can only be called when the client is not running.
+   *
+   * @return A promise that is resolved once the persistence has been cleared.
+   */
+  clearPersistence(): Promise<void>;
+
   /**
    * Re-enables use of the network for this Firestore instance after a prior
    * call to disableNetwork().