voluptasmollitia/docs-exp/installations.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/installations](./installations.md)

## installations package

Firebase Installations

## Functions

|  Function | Description |
|  --- | --- |
|  [deleteInstallations(installations)](./installations.deleteinstallations.md) | Deletes the Firebase Installation and all associated data. |
|  [getId(installations)](./installations.getid.md) | Creates a Firebase Installation if there isn't one for the app and returns the Installation ID. |
|  [getInstallations(app)](./installations.getinstallations.md) | Returns an instance of FirebaseInstallations associated with the given FirebaseApp instance. |
|  [getToken(installations, forceRefresh)](./installations.gettoken.md) | Returns an Installation auth token, identifying the current Firebase Installation. |
|  [onIdChange(installations, callback)](./installations.onidchange.md) | Sets a new callback that will get called when Installation ID changes. Returns an unsubscribe function that will remove the callback when called. |

## Interfaces

|  Interface | Description |
|  --- | --- |
|  [FirebaseInstallations](./installations.firebaseinstallations.md) | Public interface of the FirebaseInstallations SDK. |

## Type Aliases

|  Type Alias | Description |
|  --- | --- |
|  [IdChangeCallbackFn](./installations.idchangecallbackfn.md) | An user defined callback function that gets called when Installations ID changes. |
|  [IdChangeUnsubscribeFn](./installations.idchangeunsubscribefn.md) | Unsubscribe a callback function previously added via . |