voluptasmollitia/docs-exp/firestore_.documentsnapshot.exists.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/firestore](./firestore.md) &gt; [/](./firestore_.md) &gt; [DocumentSnapshot](./firestore_.documentsnapshot.md) &gt; [exists](./firestore_.documentsnapshot.exists.md)

## DocumentSnapshot.exists() method

Property of the `DocumentSnapshot` that signals whether or not the data exists. True if the document exists.

<b>Signature:</b>

```typescript
exists(): this is QueryDocumentSnapshot<T>;
```
<b>Returns:</b>

this is [QueryDocumentSnapshot](./firestore_.querydocumentsnapshot.md)<!-- -->&lt;T&gt;