firebase-js-sdk/docs-devsite/database.thenablereference.md

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# ThenableReference interface
A `Promise` that can also act as a `DatabaseReference` when returned by [push()](./database.md#push_c74661c)<!-- -->. The reference is available immediately and the `Promise` resolves as the write to the backend completes.

<b>Signature:</b>

```typescript
export declare interface ThenableReference extends DatabaseReference, Pick<Promise<DatabaseReference>, 'then' | 'catch'> 
```
<b>Extends:</b> [DatabaseReference](./database.databasereference.md#databasereference_interface)<!-- -->, Pick&lt;Promise&lt;[DatabaseReference](./database.databasereference.md#databasereference_interface)<!-- -->&gt;, 'then' \| 'catch'&gt;

## Properties

|  Property | Type | Description |
|  --- | --- | --- |
|  [key](./database.thenablereference.md#thenablereferencekey) | string |  |
|  [parent](./database.thenablereference.md#thenablereferenceparent) | [DatabaseReference](./database.databasereference.md#databasereference_interface) |  |

## ThenableReference.key

<b>Signature:</b>

```typescript
key: string;
```

## ThenableReference.parent

<b>Signature:</b>

```typescript
parent: DatabaseReference;
```