Updated documentation for compat

Author: maneesht

packages/database-compat/src/api/Database.ts

@@ -52,9 +52,23 @@ export class Database implements FirebaseService, Compat<ModularDatabase> {
    */
   constructor(readonly _delegate: ModularDatabase, readonly app: FirebaseApp) {}
 
+  /**
+   * INTERNAL methods for internal-use only (tests, etc.).
+   *
+   * @const
+   */
   INTERNAL = {
+    /**
+     * Deletes a database
+     */
     delete: () => this._delegate._delete(),
+    /**
+     * Forces realtime database to use websockets over longpolling
+     */
     forceWebSockets,
+    /**
+     * Forces realtime database to use longpolling over websockets
+     */
     forceLongPolling
   };
 

packages/firebase/compat/index.d.ts

@@ -6018,6 +6018,25 @@ declare namespace firebase.database {
      * ```
      */
     app: firebase.app.App;
+    /**
+     * INTERNAL methods for internal-use only (tests, etc.).
+     *
+     * @const
+    */
+    INTERNAL: {
+      /**
+       * Deletes a database
+       */
+      delete: () => Promise<void>,
+      /**
+       * Force the use of websockets instead of longPolling.
+       */
+      forceWebSockets: () => void,
+      /**
+       * Force the use of longPolling instead of websockets. This will be ignored if websocket protocol is used in databaseURL.
+       */
+      forceLongPolling: () => void
+    };
     /**
      * Modify this instance to communicate with the Realtime Database emulator.
      *