import { ADX as ADXIndicator } from 'technicalindicators';
import { OHLC } from '../types';
import { IndicatorInput, Indicator } from './base-indicator';
export interface AverageDirectionalIndexInput extends IndicatorInput {
    period?: number;
}
export interface ADXOutput {
    adx: number;
    mdi: number;
    pdi: number;
}
/**
 * The average directional index (ADX) is a technical analysis indicator used
 * by some traders to determine the strength of a trend. The trend can be either
 * up or down, and this is shown by two accompanying indicators, the negative
 * directional indicator (-DI) and the positive directional indicator (+DI).
 * Therefore, the ADX commonly includes three separate lines. These are used to
 * help assess whether a trade should be taken long or short, or if a trade
 * should be taken at all.
 */
export declare class ADX implements Indicator {
    indicator: ADXIndicator;
    series: OHLC[];
    period: number;
    /**
     * @param {OHLC[]} series candles series
     * @param {number} period period for indicator
     */
    constructor(series: OHLC[], period?: number);
    /**
     * Retrieve ADX values for instance
     * @return {ADXOutput[]} values for instance data
     */
    getResults(): ADXOutput[];
    /**
     * Calculate ADX to next tick
     * @param {OHLC} candle new candle to add to series
     * @return {ADXOutput | undefined} next ADX value or undefined if period is
     * greater than actual series length
     */
    next(candle: OHLC): ADXOutput | undefined;
    /**
     * Create instance from data
     * @param {AverageDirectionalIndexInput} input input data
     * @return {ADX} ADX instance
     */
    static generator({ series, period, }: AverageDirectionalIndexInput): ADX;
    /**
     * Get ADX values from input
     * @param {AverageDirectionalIndexInput} input input data
     * @return {ADXOutput[]} ADX values
     */
    static calculate(input: AverageDirectionalIndexInput): ADXOutput[];
}