import { RequiredKeys as ORequiredKeys } from '../Object/RequiredKeys';
import { ObjectOf } from './ObjectOf';
import { List } from './List';
/**
 * Get the keys of `L` that are readonly
 * @param L
 * @returns [[Key]]
 * @example
 * ```ts
 * ```
 */
export declare type RequiredKeys<L extends List> = ORequiredKeys<ObjectOf<L>>;