import { Observable } from '../Observable';
import { Scheduler } from '../Scheduler';
/**
 * Combines the values from observables passed as arguments. This is done by subscribing
 * to each observable, in order, and collecting an array of each of the most recent values any time any of the observables
 * emits, then either taking that array and passing it as arguments to an option `project` function and emitting the return
 * value of that, or just emitting the array of recent values directly if there is no `project` function.
 * @param {...Observable} observables the observables to combine
 * @param {function} [project] an optional function to project the values from the combined recent values into a new value for emission.
 * @returns {Observable} an observable of other projected values from the most recent values from each observable, or an array of each of
 * the most recent values from each observable.
 */
export declare function combineLatest<R>(...observables: Array<Observable<any> | Array<Observable<any>> | ((...values: Array<any>) => R) | Scheduler>): Observable<R>;