export type FocusType = boolean;
/**
 * Detects if the page is focused or not.
 * @kind 01-Client
 * @param initialState Initial value of focus.
 * @returns Boolean value of focus.
 * @example Base usage
 * ```tsx
 * const isFocused = useFocus();
 * console.log(isFocused); // true or false
 * ```
 */
export declare const useFocus: (initialState?: boolean) => FocusType;