[Home](./index.md) > [@firebase/auth](./auth.md) > [ReactNativeAsyncStorage](./auth.reactnativeasyncstorage.md) ## ReactNativeAsyncStorage interface Interface for a supplied AsyncStorage. Signature: ```typescript export interface ReactNativeAsyncStorage ``` ## Methods | Method | Description | | --- | --- | | [getItem(key)](./auth.reactnativeasyncstorage.getitem.md) | Retrieve an item from storage. | | [removeItem(key)](./auth.reactnativeasyncstorage.removeitem.md) | Remove an item from storage. | | [setItem(key, value)](./auth.reactnativeasyncstorage.setitem.md) | Persist an item in storage. |