export declare class PageHinkley {
    delta: number;
    lambda: number;
    alpha: number;
    threshold: number;
    sum: number;
    minSum: number;
    useMin: boolean;
    xMean: number;
    num: number;
    changeDetected: boolean;
    constructor(delta?: number, lambda?: number, alpha?: number, threshold?: number, useMin?: boolean);
    _resetParams(): void;
    setInput(x: number): boolean;
    _detectDrift(x: number): void;
}