/**
 * Finds the closest parent element of a specific Web Component type.
 * Traverses up the DOM tree looking for an ancestor matching the constructor.
 *
 * Useful for child components that need to communicate with or access
 * their parent container component, common in composite component patterns.
 *
 * @template T - The type of HTMLElement to find
 * @param node - The starting node to search from
 * @param constructor - The class constructor of the desired element type
 * @returns The matching parent element or null if not found
 *
 * @example
 * // Inside a child component, find the parent container
 * class ListItem extends HTMLElement {
 *     connectedCallback() {
 *         const list = getParentComponent(this, ListContainer);
 *         if (list) {
 *             list.registerItem(this);
 *         }
 *     }
 * }
 *
 * @example
 * // Access parent component's methods
 * class TabPanel extends HTMLElement {
 *     activate() {
 *         const tabs = getParentComponent(this, TabContainer);
 *         tabs?.selectPanel(this);
 *     }
 * }
 *
 * @example
 * // Handle case where parent might not exist
 * const form = getParentComponent(input, FormContainer);
 * if (!form) {
 *     console.warn('Input must be inside a FormContainer');
 *     return;
 * }
 */
export declare function getParentComponent<T extends HTMLElement>(node: Node, constructor: {
    new (...args: any[]): T;
}): T | null;