/**
 * Check if an element contains an event target by checking its composedPath.
 * Useful when an event target may come from a component's shadow DOM.
 */
export declare const containsTarget: (ancestor: HTMLElement, event: Event) => boolean;
/** Move the focus to `next` element, set tabindex to 0 for `next` and -1 to `current`. */
export declare const moveFocus: (current: HTMLElement, next: HTMLElement) => void;
/** Check if event key is ArrowUp */
export declare const isArrowUpKey: (event: KeyboardEvent) => boolean;
/** Check if event key is ArrowDown */
export declare const isArrowDownKey: (event: KeyboardEvent) => boolean;
/** Check if event key is Tab */
export declare const isTabKey: (event: KeyboardEvent) => boolean;
/** Check if event key is Escape */
export declare const isEscKey: (event: KeyboardEvent) => boolean;