export declare function CustomWindow(url: string, { height, width, ...configRest }: {
    height: number;
    width: number;
    [key: string]: any;
}, blankTarget?: boolean, onClose?: (dialog: Window | null) => void): Window;
export declare const getPositionOnWindowCenter: (width: number, height: number) => {
    left: number;
    top: number;
};
export declare const getPositionOnScreenCenter: (width: number, height: number) => {
    top: number;
    left: number;
};
export declare const isPromise: (obj: any | Promise<any>) => boolean;
export default function transformObjectToParams(object: {
    [key: string]: string | number | undefined | null;
}): string;