[Home](./index.md) > [@firebase/messaging](./messaging.md) > [deleteToken](./messaging.deletetoken.md) ## deleteToken() function Deletes the registration token associated with this `FirebaseMessaging` instance and unsubscribes the `FirebaseMessaging` instance from the push subscription. Signature: ```typescript export declare function deleteToken(messaging: FirebaseMessaging): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | messaging | [FirebaseMessaging](./messaging.firebasemessaging.md) | The FirebaseMessaging instance. | Returns: Promise<boolean> The promise resolves when the token has been successfully deleted.