[**@jupyterlite**](../../../README.md)

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[@jupyterlite](../../../README.md) / [@jupyterlite/apputils](../README.md) / ServiceWorkerManager

# Class: ServiceWorkerManager

Defined in: [packages/apputils/src/service-worker-manager.ts:40](https://github.com/jupyterlite/jupyterlite/blob/5d565b7c8e2c6a07c22d592b848261a0d170de64/packages/apputils/src/service-worker-manager.ts#L40)

A class that manages the ServiceWorker registration and communication,
used for accessing the file system.

## Implements

- [`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md)

## Constructors

### Constructor

> **new ServiceWorkerManager**(`options`): `ServiceWorkerManager`

Defined in: [packages/apputils/src/service-worker-manager.ts:44](https://github.com/jupyterlite/jupyterlite/blob/5d565b7c8e2c6a07c22d592b848261a0d170de64/packages/apputils/src/service-worker-manager.ts#L44)

Construct a new ServiceWorkerManager.

#### Parameters

##### options

[`IOptions`](../namespaces/IServiceWorkerManager/interfaces/IOptions.md)

#### Returns

`ServiceWorkerManager`

## Accessors

### browsingContextId

#### Get Signature

> **get** **browsingContextId**(): `string`

Defined in: [packages/apputils/src/service-worker-manager.ts:84](https://github.com/jupyterlite/jupyterlite/blob/5d565b7c8e2c6a07c22d592b848261a0d170de64/packages/apputils/src/service-worker-manager.ts#L84)

A unique id to identify the browsing context where the ServiceWorkerManager was instantiated.

##### Returns

`string`

A unique id to identify the browsing context where the ServiceWorkerManager was instantiated.

#### Implementation of

[`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md).[`browsingContextId`](../interfaces/IServiceWorkerManager.md#browsingcontextid)

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### enabled

#### Get Signature

> **get** **enabled**(): `boolean`

Defined in: [packages/apputils/src/service-worker-manager.ts:77](https://github.com/jupyterlite/jupyterlite/blob/5d565b7c8e2c6a07c22d592b848261a0d170de64/packages/apputils/src/service-worker-manager.ts#L77)

Whether the ServiceWorker is enabled or not.

##### Returns

`boolean`

Whether the ServiceWorker is enabled or not.

#### Implementation of

[`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md).[`enabled`](../interfaces/IServiceWorkerManager.md#enabled)

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### ready

#### Get Signature

> **get** **ready**(): `Promise`\<`void`\>

Defined in: [packages/apputils/src/service-worker-manager.ts:91](https://github.com/jupyterlite/jupyterlite/blob/5d565b7c8e2c6a07c22d592b848261a0d170de64/packages/apputils/src/service-worker-manager.ts#L91)

Whether the ServiceWorker is ready or not.

##### Returns

`Promise`\<`void`\>

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

#### Implementation of

[`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md).[`ready`](../interfaces/IServiceWorkerManager.md#ready)

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### registrationChanged

#### Get Signature

> **get** **registrationChanged**(): `ISignal`\<[`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md), `ServiceWorkerRegistration` \| `null`\>

Defined in: [packages/apputils/src/service-worker-manager.ts:67](https://github.com/jupyterlite/jupyterlite/blob/5d565b7c8e2c6a07c22d592b848261a0d170de64/packages/apputils/src/service-worker-manager.ts#L67)

A signal emitted when the registration changes.

##### Returns

`ISignal`\<[`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md), `ServiceWorkerRegistration` \| `null`\>

Signal fired when the registration changed.

#### Implementation of

[`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md).[`registrationChanged`](../interfaces/IServiceWorkerManager.md#registrationchanged)

## Methods

### registerStdinHandler()

> **registerStdinHandler**(`pathnameSuffix`, `stdinHandler`): `void`

Defined in: [packages/apputils/src/service-worker-manager.ts:100](https://github.com/jupyterlite/jupyterlite/blob/5d565b7c8e2c6a07c22d592b848261a0d170de64/packages/apputils/src/service-worker-manager.ts#L100)

Register a handler for stdin requests received via ServiceWorker.

#### Parameters

##### pathnameSuffix

`string`

URL pathname suffix to match such as "kernel" or "terminal".

##### stdinHandler

[`IStdinHandler`](../namespaces/IServiceWorkerManager/interfaces/IStdinHandler.md)

#### Returns

`void`

#### Implementation of

[`IServiceWorkerManager`](../interfaces/IServiceWorkerManager.md).[`registerStdinHandler`](../interfaces/IServiceWorkerManager.md#registerstdinhandler)