export interface IImageSize {
    url: string;
    width: number;
    height: number;
}
export interface IScrollOption {
    el: HTMLElement | Element | null;
    marginTop?: number;
    marginLeft?: number;
}
export interface IOpenWindowOption {
    url: string;
    id?: string;
    features?: string;
    onFocus?(this: GlobalEventHandlers, ev: FocusEvent): any;
    onBlur?(this: GlobalEventHandlers, ev: FocusEvent): any;
    onClose?(this: WindowEventHandlers, ev: BeforeUnloadEvent): any;
}
export declare const documentBody: HTMLElement | null;
export declare function getScrollOffsetX(): number;
export declare function getScrollOffsetY(): number;
export declare function getImageSize(url: string): Promise<IImageSize>;
export declare function freezeBody(): void;
export declare function unfreezeBody(): void;
export declare function scroll(scrollOption: IScrollOption): void;
export declare function openWindow(openWindowOption: IOpenWindowOption): Window | null;