import { TrendIndicatorSeries, type TradingSignals } from '../../base/Indicator.js';
type TDSState = {
    closes: number[];
    lastBarCompletedSetup: boolean;
    setupCount: number;
    setupDirection: 'bullish' | 'bearish' | null;
};
export declare class TDS extends TrendIndicatorSeries<number, TradingSignals, TDSState> {
    protected state: TDSState;
    getRequiredInputs(): number;
    update(close: number, replace: boolean): number | null;
    protected calculateSignalState(result?: number | null | undefined): "BEARISH" | "BULLISH" | "UNKNOWN";
}
export {};