/**
 * Create id for messaging
 */
export declare const messageId: (id: string, messageType: string) => string;
/**
 * Assign aria-description id to relate messages with form element
 */
export declare const assignDescription: (id: string, invalid: boolean, helperMessage: string) => string;
/**
 * Updates the `invalid` prop of a form element based on it's values validity
 */
export declare const isRequired: (target: any, component: any) => void;
