/** Opaque type utilities. */
import { Opaque } from 'ts-essentials';
/** Dash-separated string, with optional `.` prefix. */
export type Slug = Opaque<string, 'slug'>;
/**
 * Promotes a string to a `Slug` instance, throwing `if the input is not a valid
 * slug.
 */
export declare function newSlug(arg: string, maxLength?: number): Slug;
/** Checks whether the string is a valid slug. */
export declare function isSlug(arg: string, maxLength?: number): arg is Slug;
/** Attempts to transform the string into a valid slug. */
export declare function slugify(arg: string, maxLength?: number): Slug;
/** Standard UUID. */
export type Uuid = Opaque<string, 'uuid'>;
/**
 * Promotes a string to a `Uuid` instance, throwing if the input is not a valid
 * UUID.
 */
export declare function newUuid(arg: string): Uuid;
/** Checks whether the string is a valid UUID. */
export declare function isUuid(arg: string): arg is Uuid;