type CoreDomElement = HTMLElement | SVGElement;
type CoreDomSelect = CoreDomElement | CoreDomElement[] | NodeList | Document | string | null;

type ScrollSmoothOptions = {
    wrapper?: CoreDomSelect;
    content?: CoreDomSelect;
    generateWrapper?: boolean;
    duration?: number;
    touchDuration?: number;
    speed?: number;
    touchSpeed?: number;
};
declare class ScrollSmooth {
    static _defaultOptions: ScrollSmoothOptions | undefined;
    static get defaultOptions(): ScrollSmoothOptions;
    static set defaultOptions(options: ScrollSmoothOptions);
    static dy: number | undefined;
    private options;
    private sy;
    private dy;
    private distance;
    private duration;
    private speed;
    private frame;
    private handleLoad;
    private handleScroll;
    private constructor();
    private static instance;
    static getInstance(options: ScrollSmoothOptions): ScrollSmooth;
    get content(): CoreDomElement | null;
    get scrollY(): number;
    private updateWrapperHeight;
    setDuration(duration: number): void;
    render(): void;
    revert(): void;
}
declare const scrollSmooth: {
    (options: ScrollSmoothOptions): ScrollSmooth;
    label: string;
    options(options: ScrollSmoothOptions): {
        wrapper?: CoreDomSelect;
        content?: CoreDomSelect;
        generateWrapper?: boolean;
        duration?: number;
        touchDuration?: number;
        speed?: number;
        touchSpeed?: number;
    };
};

export { scrollSmooth };