import type { HighLowCloseVolume } from '../../base/Candle.type.js';
import { TrendIndicatorSeries } from '../../base/Indicator.js';
export declare class AD extends TrendIndicatorSeries<HighLowCloseVolume> {
    #private;
    getRequiredInputs(): number;
    update(candle: HighLowCloseVolume, replace: boolean): number;
    protected calculateSignalState(result: number | null | undefined): "BEARISH" | "BULLISH" | "SIDEWAYS" | "UNKNOWN";
}