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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'.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-07-07 UTC."],[],[],null,["# QueryDocumentSnapshot class\n\nA `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(\u003cfield\u003e)` to get a specific field.\n\nA `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'.\n\n**Signature:** \n\n export declare class QueryDocumentSnapshot\u003cAppModelType = DocumentData, DbModelType extends DocumentData = DocumentData\u003e extends DocumentSnapshot\u003cAppModelType, DbModelType\u003e \n\n**Extends:** [DocumentSnapshot](./firestore_lite.documentsnapshot.md#documentsnapshot_class)\\\u003cAppModelType, DbModelType\\\u003e\n\nMethods\n-------\n\n| Method | Modifiers | Description |\n|-------------------------------------------------------------------------------|-----------|------------------------------------------------------|\n| [data()](./firestore_lite.querydocumentsnapshot.md#querydocumentsnapshotdata) | | Retrieves all fields in the document as an `Object`. |\n\nQueryDocumentSnapshot.data()\n----------------------------\n\nRetrieves all fields in the document as an `Object`.\n\n**Signature:** \n\n /** @override */\n data(): AppModelType;\n\n**Returns:**\n\nAppModelType\n\nAn `Object` containing all fields in the document."]]
