import type { Algorithm } from "jsonwebtoken";
import type { Socket } from "socket.io";
import { UnauthorizedError } from "./UnauthorizedError.js";
declare module "socket.io" {
    interface Socket extends ExtendedSocket {
    }
}
interface ExtendedSocket {
    encodedToken?: string;
    decodedToken?: any;
    user?: any;
}
type SocketIOMiddleware = (socket: Socket, next: (error?: UnauthorizedError) => void) => void;
interface CompleteDecodedToken {
    header: {
        alg: Algorithm;
        [key: string]: any;
    };
    payload: any;
}
type SecretCallback = (decodedToken: CompleteDecodedToken) => Promise<string> | string;
export interface AuthorizeOptions {
    secret: string | SecretCallback;
    algorithms?: Algorithm[];
    onAuthentication?: (decodedToken: any) => Promise<any> | any;
}
export declare const authorize: (options: AuthorizeOptions) => SocketIOMiddleware;
export {};