@omneedia/socketcluster/sample/node_modules/rxjs/add/observable/dom/webSocket.d.ts

SocketCluster - A Highly parallelized WebSocket server cluster to make the most of multi-core machines/instances.

import { webSocket as staticWebSocket } from '../../../observable/dom/webSocket';
declare module '../../../Observable' {
    namespace Observable {
        let webSocket: typeof staticWebSocket;
    }
}