import { BigSource } from 'big.js';
export declare type KLineBaseInterface = {
    id: number;
    open: BigSource;
    close: BigSource;
    low: BigSource;
    high: BigSource;
    volume: BigSource;
};
export declare const mergeKLine: (interval?: number) => import("rxjs").UnaryFunction<import("rxjs").Observable<KLineBaseInterface>, import("rxjs").Observable<KLineBaseInterface>>;