Added non-null parent property to IteratedDataSnapshot

Author: rhodgkins

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

@@ -209,10 +209,12 @@ export class DataSnapshot implements Compat<ModularDataSnapshot> {
 }
 
 /**
- * Represents a child snapshot of a `Reference` that is being iterated over. The key will never be undefined.
+ * Represents a child snapshot of a `Reference` that is being iterated over. The
+ * key and parent will never be undefined.
  */
 export interface IteratedDataSnapshot extends DataSnapshot {
   key: string; // key of the location of this snapshot.
+  parent: Reference;
 }
 
 export interface SnapshotCallback {

packages/database-types/index.d.ts

@@ -19,10 +19,12 @@ import { FirebaseApp } from '@firebase/app-types';
 import { EmulatorMockTokenOptions } from '@firebase/util';
 
 /**
- * Represents a child snapshot of a `Reference` that is being iterated over. The key will never be undefined.
+ * Represents a child snapshot of a `Reference` that is being iterated over. The
+ * key and parent will never be undefined.
  */
 export interface IteratedDataSnapshot extends DataSnapshot {
   key: string; // key of the location of this snapshot.
+  parent: Reference;
 }
 
 export interface DataSnapshot {

packages/database/src/api/Reference_impl.ts

@@ -464,10 +464,12 @@ export class DataSnapshot {
 }
 
 /**
- * Represents a child snapshot of a `Reference` that is being iterated over. The key will never be undefined.
+ * Represents a child snapshot of a `Reference` that is being iterated over. The
+ * key and parent will never be undefined.
  */
 export interface IteratedDataSnapshot extends DataSnapshot {
   key: string; // key of the location of this snapshot.
+  parent: DatabaseReference;
 }
 
 /**

packages/firebase/compat/index.d.ts

@@ -6001,6 +6001,7 @@ declare namespace firebase.database {
 
   interface IteratedDataSnapshot extends DataSnapshot {
     key: string; // key of the location of this snapshot.
+    parent: Reference;
   }
 
   /**