export declare const schemeOf: (s: unknown) => string | null;
export type TcpAddress = {
    host: string;
    port: number;
};
export declare const tcpAddress: (s: unknown) => TcpAddress | null;
export declare const tcpAt: (host: string, port: number) => string;
export type WebAddress = {
    scheme: 'http' | 'https' | 'ws' | 'wss';
    secure: boolean;
    held: boolean;
    host: string;
    port: number;
    path: string;
    href: string;
};
export declare const webAddress: (s: unknown) => WebAddress | null;
export declare const unspecified: (s: unknown) => boolean;
export declare const readAt: (value: unknown) => string[];