[Home](./index.md) > [@firebase/auth](./auth.md) > [signOut](./auth.signout.md) ## signOut() function Signs out the current user. Signature: ```typescript export declare function signOut(auth: Auth): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | auth | [Auth](./auth.auth.md) | The Auth instance. | Returns: Promise<void>