import type { Cleanup, SignalOptions } from './types.ts';
interface ObserveOptions extends SignalOptions {
    root?: Element;
}
/**
 * Auto-bind behaviors to elements matching a CSS selector, both existing
 * and dynamically added in the future via MutationObserver.
 *
 * Returns a cleanup function that disconnects the observer and runs all
 * per-element cleanups returned by the handler.
 *
 * @example
 *
 *     const stop = observe('[data-tooltip]', (el) => {
 *         const tip = new Tooltip(el);
 *         return () => tip.destroy();
 *     });
 *
 *     stop(); // disconnects observer + destroys all tooltips
 */
export declare function observe(selector: string, handler: (el: Element) => Cleanup | void, opts?: ObserveOptions): Cleanup;
export {};