firebase-js-sdk/docs-devsite/auth.reactnativeasyncstorage.md

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ReactNativeAsyncStorage interface

Interface for a supplied AsyncStorage.

Signature:

export interface ReactNativeAsyncStorage 

Methods

Method	Description
getItem(key)	Retrieve an item from storage.
removeItem(key)	Remove an item from storage.
setItem(key, value)	Persist an item in storage.

ReactNativeAsyncStorage.getItem()

Retrieve an item from storage.

Signature:

getItem(key: string): Promise<string | null>;

Parameters

Parameter	Type	Description
key	string	storage key.

Returns:

Promise<string | null>

ReactNativeAsyncStorage.removeItem()

Remove an item from storage.

Signature:

removeItem(key: string): Promise<void>;

Parameters

Parameter	Type	Description
key	string	storage key.

Returns:

Promise<void>

ReactNativeAsyncStorage.setItem()

Persist an item in storage.

Signature:

setItem(key: string, value: string): Promise<void>;

Parameters

Parameter	Type	Description
key	string	storage key.
value	string	storage value.

Returns:

Promise<void>