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