luhn-generator/update/node_modules/rxjs/internal/util/isObservable.d.ts

A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm

import { Observable } from '../Observable';
/**
 * Tests to see if the object is an RxJS {@link Observable}
 * @param obj the object to test
 */
export declare function isObservable<T>(obj: any): obj is Observable<T>;