# Interface: `IServiceWorkerManager`

[@jupyterlite/server](../modules/jupyterlite_server.md).IServiceWorkerManager

The interface for the ServiceWorkerRegistration.

## Properties

### `enabled`

> `Readonly` **`enabled`**: `boolean`

Whether the ServiceWorker is enabled or not.

#### Defined in

[packages/server/src/tokens.ts:29](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/server/src/tokens.ts#L29)

### `ready`

> **`ready`**: `Promise`<`void`\>

A Promise that resolves when the ServiceWorker is registered, or rejects if it cannot

#### Defined in

[packages/server/src/tokens.ts:34](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/server/src/tokens.ts#L34)

### `registrationChanged`

> `Readonly` **`registrationChanged`**:
> `ISignal`<[`IServiceWorkerManager`](../modules/jupyterlite_server.md#iserviceworkermanager),
> `null` \| `ServiceWorkerRegistration`\>

Signal fired when the registration changed.

#### Defined in

[packages/server/src/tokens.ts:21](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/server/src/tokens.ts#L21)