rxjs-es/src/add/operator/mergeScan.ts

Reactive Extensions for modern JavaScript

import { Observable } from '../../Observable';
import { mergeScan, MergeScanSignature } from '../../operator/mergeScan';

Observable.prototype.mergeScan = mergeScan;

declare module '../../Observable' {
  interface Observable<T> {
    mergeScan: MergeScanSignature<T>;
  }
}