[Home](./index.md) > [@firebase/auth](./auth.md) > [ReactNativeAsyncStorage](./auth.reactnativeasyncstorage.md) > [getItem](./auth.reactnativeasyncstorage.getitem.md) ## ReactNativeAsyncStorage.getItem() method Retrieve an item from storage. Signature: ```typescript getItem(key: string): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | key | string | storage key. | Returns: Promise<string \| null>