@omneedia/socketcluster/sample/node_modules/rxjs/src/add/operator/findIndex.ts

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

import { Observable } from '../../Observable';
import { findIndex } from '../../operator/findIndex';

Observable.prototype.findIndex = findIndex;

declare module '../../Observable' {
  interface Observable<T> {
    findIndex: typeof findIndex;
  }
}