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

type ScrollObserverDevOptions = {
    markers: boolean;
    markersColor: string;
    area: boolean;
};
type ScrollObserverOptions = {
    animation: any;
    context: CoreDomSelect;
    trigger?: CoreDomSelect;
    endTrigger?: CoreDomElement;
    start: string | number;
    end: string | number;
    steer: boolean;
    steerDuration: number;
    pin: boolean | CoreDomSelect;
    pinSpacing: boolean;
    pinWrapper?: CoreDomSelect;
    pinContent?: CoreDomSelect;
    resize: boolean;
    dev: boolean | ScrollObserverDevOptions;
    onBottomIn: Function | string;
    onTopIn: Function | string;
    onBottomOut: Function | string;
    onTopOut: Function | string;
    onEnter: Function | string;
    onLeave: Function | string;
    onUpdate: Function;
};
declare class ScrollObserver {
    private static _defaultOptions;
    static get defaultOptions(): ScrollObserverOptions;
    static set defaultOptions(options: Partial<ScrollObserverOptions>);
    static devCss: boolean;
    private frame;
    private destroyed;
    options: ScrollObserverOptions;
    viewportStartPX: number;
    private viewportEndPX;
    triggerStartPX: number;
    private triggerEndPX;
    startTriggerOffset: number;
    private endTriggerOffset;
    private isIntersacting;
    private sy;
    private dy;
    private pinWrapper;
    private pinContent;
    private scrollDistance;
    private markers;
    private windowWidth;
    private boundResize;
    private absolute;
    constructor(options: Partial<ScrollObserverOptions>);
    private render;
    getProgress(delayed?: boolean): number;
    resize(): void;
    private patchStickyOverflow;
    refresh(): void;
    revert(): void;
    private createMarkers;
    private changeMarkerPosition;
    private setMarkerProgress;
}
declare const scrollObserver: {
    (options: Partial<ScrollObserverOptions>): ScrollObserver;
    label: string;
    options(options: Partial<ScrollObserverOptions>): {
        animation: any;
        context: CoreDomSelect;
        trigger?: CoreDomSelect;
        endTrigger?: CoreDomElement;
        start: string | number;
        end: string | number;
        steer: boolean;
        steerDuration: number;
        pin: boolean | CoreDomSelect;
        pinSpacing: boolean;
        pinWrapper?: CoreDomSelect;
        pinContent?: CoreDomSelect;
        resize: boolean;
        dev: boolean | ScrollObserverDevOptions;
        onBottomIn: Function | string;
        onTopIn: Function | string;
        onBottomOut: Function | string;
        onTopOut: Function | string;
        onEnter: Function | string;
        onLeave: Function | string;
        onUpdate: Function;
    };
};

export { scrollObserver };