Project: /docs/reference/js/_project.yaml Book: /docs/reference/_book.yaml page_type: reference {% comment %} DO NOT EDIT THIS FILE! This is generated by the JS SDK team, and any local changes will be overwritten. Changes should be made in the source code at https://github.com/firebase/firebase-js-sdk {% endcomment %} # PersistentLocalCache interface Provides a persistent cache backed by IndexedDb to the SDK. To use, create an instance using the factory function , then set the instance to `FirestoreSettings.cache` and call `initializeFirestore` using the settings object. Signature: ```typescript export declare interface PersistentLocalCache ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [kind](./firestore_.persistentlocalcache.md#persistentlocalcachekind) | 'persistent' | | ## PersistentLocalCache.kind Signature: ```typescript kind: 'persistent'; ```