/**
 * Generates a unique identifier with an optional prefix.
 * @param prefix - Optional prefix for the generated ID (default: 'bcm')
 * @returns A unique string ID in the format "prefix-uuid"
 * @example
 * const id = generateId('button'); // -> "button-123e4567-e89b..."
 * const defaultId = generateId(); // -> "bcm-123e4567-e89b..."
 */
export declare const generateId: (prefix?: string) => string;