[Home](./index.md) > [@firebase/firestore](./firestore.md) > [/](./firestore_.md) > [getDocFromCache](./firestore_.getdocfromcache.md) ## getDocFromCache() function Reads the document referred to by this `DocumentReference` from cache. Returns an error if the document is not currently cached. Signature: ```typescript export declare function getDocFromCache(reference: DocumentReference): Promise>; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | reference | [DocumentReference](./firestore_.documentreference.md)<T> | | Returns: Promise<[DocumentSnapshot](./firestore_.documentsnapshot.md)<T>> A Promise resolved with a `DocumentSnapshot` containing the current document contents.