import { Observable, Subject } from 'rxjs';
import { ITimeEmission } from '../types/Emission';
import { IGroupParameter, ISegmentConfigShape, ISegmentType, ISequenceConfigShape } from '../types/Segment';
import { TimeSegment } from './TimeSegment';
/**
 * Simply a pass-thru function to be used with-in a group functions parentheses.
 *
 * Adds a single segment (`CountupSegment` or `CountdownSegment`) to a sequence.
 * @param ctor    A type being subclass of `TimeSegment`, specifically `CountupSegment` or
 * `CountdownSegment`.
 * @param config  Config file specifiying `duration` (required) and `states` (optional).  When used
 * inside a group function, the `omitFirst` can be used to omit this segment when its assigned to
 * the first interval.
 * @returns       An instance of `T` type, which is a subclass of `TimeSegment`.
 */
export declare function add<T extends TimeSegment>(ctor: ISegmentType<T>, config: ISegmentConfigShape): IGroupParameter<T>;
export declare class SegmentCollection {
    config: ISequenceConfigShape;
    private pauseObserv;
    private segments;
    constructor(config: ISequenceConfigShape, pauseObserv: Subject<boolean>);
    add<T extends TimeSegment>(ctor: ISegmentType<T>, config: ISegmentConfigShape): T;
    group<T extends TimeSegment>(intervals?: number, ...segments: Array<IGroupParameter<T>>): T;
    toSequencedObservable(): Observable<ITimeEmission>;
}