import { Observable } from '../Observable';
import { Scheduler } from '../Scheduler';
/**
 * Buffers values from the source for a specific time period. Optionally allows
 * new buffers to be set up at an interval.
 *
 * <img src="./img/bufferTime.png" width="100%">
 *
 * @param {number} bufferTimeSpan the amount of time to fill each buffer for
 * before emitting them and clearing them.
 * @param {number} [bufferCreationInterval] the interval at which to start new
 * buffers.
 * @param {Scheduler} [scheduler] (optional, defaults to `asap` scheduler) The
 * scheduler on which to schedule the intervals that determine buffer
 * boundaries.
 * @returns {Observable<T[]>} an observable of arrays of buffered values.
 */
export declare function bufferTime<T>(bufferTimeSpan: number, bufferCreationInterval?: number, scheduler?: Scheduler): Observable<T[]>;
export interface BufferTimeSignature<T> {
    (bufferTimeSpan: number, bufferCreationInterval?: number, scheduler?: Scheduler): Observable<T[]>;
}