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QueryDocumentSnapshot class

A QueryDocumentSnapshot contains data read from a document in your Firestore database as part of a query. The document is guaranteed to exist and its data can be extracted with .data() or .get(<field>) to get a specific field.

A QueryDocumentSnapshot offers the same API surface as a DocumentSnapshot. Since query results contain only existing documents, the exists property will always be true and data() will never return 'undefined'.

Signature:

export declare class QueryDocumentSnapshot<T = DocumentData> extends DocumentSnapshot<T> 

Extends: DocumentSnapshot<T>

Methods

Method	Modifiers	Description
data()		Retrieves all fields in the document as an Object.