import { IndicatorSeries } from '../../base/Indicator.js';
import type { MovingAverageTypes } from '../MA/MovingAverageTypes.js';
import type { HighLowClose } from '../../base/Candle.type.js';
export declare class ADX extends IndicatorSeries<HighLowClose<number>> {
    #private;
    readonly interval: number;
    constructor(interval: number, SmoothingIndicator?: MovingAverageTypes);
    get mdi(): number | void;
    get pdi(): number | void;
    getRequiredInputs(): number;
    update(candle: HighLowClose<number>, replace: boolean): number | null;
}