import { IObservable } from '../internal/Observable';
export declare type TSelector<T> = {
    (...e: Array<any>): T;
};
export declare type TSampler = IObservable<any>;
export declare type TSources = Array<IObservable<any>>;
export declare type TResult<T> = IObservable<T>;
export declare const sample: {
    <T>(selector: TSelector<T>, sampler: IObservable<any>, source: IObservable<any>[]): IObservable<T>;
    <T>(selector: TSelector<T>): (sampler: IObservable<any>, source: IObservable<any>[]) => IObservable<T>;
    <T>(selector: TSelector<T>, sampler: IObservable<any>): (source: IObservable<any>[]) => IObservable<T>;
    <T>(selector: TSelector<T>): (sampler: IObservable<any>) => (source: IObservable<any>[]) => IObservable<T>;
};