[Home](./index.md) > [@firebase/auth](./auth.md) > [linkWithCredential](./auth.linkwithcredential.md) ## linkWithCredential() function Links the user account with the given credentials. Signature: ```typescript export declare function linkWithCredential(user: User, credential: AuthCredential): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | user | [User](./auth.user.md) | The user. | | credential | [AuthCredential](./auth.authcredential.md) | The auth credential. | Returns: Promise<[UserCredential](./auth.usercredential.md)> ## Remarks An [AuthProvider](./auth.authprovider.md) can be used to generate the credential.