/**
 * Adds class `className` to `el`
 * @param  {Element} el
 * @param  {string} className
 */
export declare function addClass<T extends Element>(el: T, className: string): T;
/**
 * Removes class `className` from `el`
 * @param  {Element} el
 * @param  {string} className
 */
export declare function removeClass<T extends Element>(el: T, className: string): T;
/**
 * Helper to recursively find parent with the `className` class
 * @param base `Element` to start from
 * @param className class that the parent should have
 */
export declare function getParentByClassName(base: Element, className: string): Element;
/**
 * Removes all child DOM nodes from `el`
 * @param  {Element} el
 */
export declare function removeChildren<T extends Element>(el: T): T;
/**
 * Get last element of `NodeList`
 * @param list NodeListOf e.g. return value of `getElementsByClassName`
 */
export declare function getLastItemOfNodeList<T extends Node>(list: NodeListOf<T> | null): T;
/** Calls `fn` with each element of `els` */
export declare function forEachNodeList<T extends Node>(els: NodeListOf<T>, fn: (el: T, index: number) => any): void;
export interface StringOrNumberMap {
    [key: string]: string | number;
}
/** Sets a CSS style property, but only if property exists on `el` */
export declare function safeSetStyle(el: HTMLElement | SVGElement, property: string, value: string): void;
/** Sets an attribute, but only if `name` exists on `el` */
export declare function safeSetAttribute(el: HTMLElement | SVGElement, name: string, value: string): void;
/** Sets multiple CSS style properties, but only if property exists on `el` */
export declare function safeSetStyles(el: HTMLElement | SVGElement, css: StringOrNumberMap): void;
/** Sets attributes, but only if they exist on `el` */
export declare function safeSetAttributes(el: HTMLElement | SVGElement, attributes: StringOrNumberMap): void;
export declare function makeHtmlEl(): HTMLHtmlElement;
export declare function makeBodyEl(css?: StringOrNumberMap, innerHTML?: string): HTMLBodyElement;