@omneedia/socketcluster/sample/node_modules/rxjs/add/operator/takeUntil.d.ts

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

import { takeUntil } from '../../operator/takeUntil';
declare module '../../Observable' {
    interface Observable<T> {
        takeUntil: typeof takeUntil;
    }
}