import type { BaseMarkProps, ChannelAccessor, DataRow } from '../types.js';
type BollingerXProps = BaseMarkProps & {
    data: DataRow[];
    x?: ChannelAccessor;
    y?: ChannelAccessor;
    /**
     * the window size (the window transform’s k option), an integer; defaults to 20
     */
    n?: number;
    /**
     * the band radius, a number representing a multiple of standard deviations; defaults to 2
     */
    k?: number;
};
/** line representing a moving average and an area representing volatility as a band */
declare const BollingerX: import("svelte").Component<BollingerXProps, {}, "">;
type BollingerX = ReturnType<typeof BollingerX>;
export default BollingerX;