/**
 * Small DOM jobs that more than one plugin needs, and that are easy to get
 * subtly different from each other.
 */
/**
 * Copy every `data-` attribute from one element to another.
 *
 * Used when a plugin replaces or wraps an element and the author's own data
 * attributes have to survive the swap.
 *
 * @param source - Element to copy from.
 * @param target - Element to copy to.
 * @param not - Attribute name to leave behind, if any.
 */
export declare const copyDataAttributes: (source: Element, target: Element, not?: string) => void;
/**
 * Build an element from a string of HTML.
 *
 * `createContextualFragment` rather than `innerHTML` on a throwaway div: it
 * parses in the document's context, so `<td>` or `<li>` at the top level survive
 * instead of being dropped as invalid children of a `div`.
 *
 * @returns The first element in the string, or `null` if there is none.
 */
export declare const createNode: (html: string) => HTMLElement | null;