import type { HighLow } from '../../base/Candle.type.js';
import { ZeroCrossSeries } from '../../base/Indicator.js';
export declare class CVI extends ZeroCrossSeries<HighLow<number>> {
    #private;
    readonly interval: number;
    constructor(interval?: number);
    getRequiredInputs(): number;
    update({ high, low }: HighLow<number>, replace: boolean): number | null;
}