export type TargetSelector = string;
export type RootElement = Element;
/**
 * getPreviousSibling traverses down the DOM tree until it finds the wanted element
 *
 * @param  {string} selector CSS selector name (HTML class name or selector or tag name with upper case chars, like BUTTON)
 * @param  {Element} element The element to begin with
 * @return {Element} Found element
 */
export declare const getPreviousSibling: (selector: TargetSelector, element: RootElement) => Element | null;