/**
 * Wait for an element to appear in the DOM
 * @param containerElement - Parent element to search in
 * @param selector - CSS selector
 * @param timeout - Timeout in milliseconds (default: 5000ms)
 * @returns Promise that resolves to the found element or rejects on timeout
 */
export declare function findElement(containerElement: HTMLElement, selector: string, timeout?: number): Promise<HTMLElement>;