diff --git a/bin/peerjs.ts b/bin/peerjs.ts
index 4010532..2323483 100644
--- a/bin/peerjs.ts
+++ b/bin/peerjs.ts
@@ -1,12 +1,12 @@
 #!/usr/bin/env node
 
-import path from "path";
+import path from "node:path";
 import {version} from "../package.json";
-import fs from "fs";
+import fs from "node:fs";
 const optimistUsageLength = 98;
 import yargs from "yargs";
 import { PeerServer } from "../src";
-import { AddressInfo } from "net";
+import { AddressInfo } from "node:net";
 const opts =  yargs
   .usage("Usage: $0")
   .wrap(Math.min(optimistUsageLength, yargs.terminalWidth()))
@@ -74,7 +74,7 @@ const opts =  yargs
       default: false,
     },
   })
-  .boolean("allow_discovery").argv;
+  .boolean("allow_discovery").parseSync();
 
 process.on("uncaughtException", function (e) {
   console.error("Error: " + e);
diff --git a/src/api/index.ts b/src/api/index.ts
index babb7a4..2e3d2f5 100644
--- a/src/api/index.ts
+++ b/src/api/index.ts
@@ -1,9 +1,9 @@
 import cors from "cors";
 import express from "express";
 import publicContent from "../../app.json";
-import { IConfig } from "../config";
-import { IRealm } from "../models/realm";
 import PublicApi from "./v1/public";
+import type {IConfig} from "../config";
+import type {IRealm} from "../models/realm";
 
 export const Api = ({ config, realm }: {
   config: IConfig;
diff --git a/src/api/v1/public/index.ts b/src/api/v1/public/index.ts
index ffd3a6f..2a15925 100644
--- a/src/api/v1/public/index.ts
+++ b/src/api/v1/public/index.ts
@@ -1,6 +1,6 @@
 import express from "express";
-import { IConfig } from "../../../config";
-import { IRealm } from "../../../models/realm";
+import type {IConfig} from "../../../config";
+import type {IRealm} from "../../../models/realm";
 
 export default ({ config, realm }: {
   config: IConfig; realm: IRealm;
diff --git a/src/index.ts b/src/index.ts
index 687accd..401f618 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,16 +1,18 @@
 import express from "express";
-import http from "http";
-import https from "https";
-import { Server } from "net";
+import http from "node:http";
+import https from "node:https";
+import {Server as HttpServer} from "node:http";
+import {Server as HttpsServer} from "node:https";
+import type {Express} from 'express-serve-static-core';
 
-import defaultConfig, { IConfig } from "./config";
-import { createInstance } from "./instance";
+import type {IConfig} from "./config";
+import defaultConfig from "./config";
+import type {PeerServerEvents} from "./instance";
+import {createInstance} from "./instance";
 
-type Optional<T> = {
-  [P in keyof T]?: (T[P] | undefined);
-};
+export type {MessageType} from "./enums"
 
-function ExpressPeerServer(server: Server, options?: IConfig) {
+function ExpressPeerServer(server: HttpsServer | HttpServer, options?: Partial<IConfig>) {
   const app = express();
 
   const newOptions: IConfig = {
@@ -31,10 +33,10 @@ function ExpressPeerServer(server: Server, options?: IConfig) {
     createInstance({ app, server, options: newOptions });
   });
 
-  return app;
+	return app as Express & PeerServerEvents
 }
 
-function PeerServer(options: Optional<IConfig> = {}, callback?: (server: Server) => void) {
+function PeerServer(options: Partial<IConfig> = {}, callback?: (server: HttpsServer | HttpServer) => void) {
   const app = express();
 
   let newOptions: IConfig = {
@@ -45,7 +47,7 @@ function PeerServer(options: Optional<IConfig> = {}, callback?: (server: Server)
   const port = newOptions.port;
   const host = newOptions.host;
 
-  let server: Server;
+  let server: HttpsServer | HttpServer;
 
   const { ssl, ...restOptions } = newOptions;
   if (ssl && Object.keys(ssl).length) {
diff --git a/src/instance.ts b/src/instance.ts
index cb13bb5..efc17fd 100644
--- a/src/instance.ts
+++ b/src/instance.ts
@@ -1,20 +1,30 @@
 import express from "express";
-import { Server } from "net";
-import path from "path";
-import { IClient } from "./models/client";
-import { IMessage } from "./models/message";
-import { Realm } from "./models/realm";
-import { IRealm } from "./models/realm";
-import { CheckBrokenConnections } from "./services/checkBrokenConnections";
-import { IMessagesExpire, MessagesExpire } from "./services/messagesExpire";
-import { IWebSocketServer, WebSocketServer } from "./services/webSocketServer";
-import { MessageHandler } from "./messageHandler";
-import { Api } from "./api";
-import { IConfig } from "./config";
+import {Server as HttpServer} from "node:http";
+import {Server as HttpsServer} from "node:https";
+import path from "node:path";
+import type {IRealm} from "./models/realm";
+import {Realm} from "./models/realm";
+import {CheckBrokenConnections} from "./services/checkBrokenConnections";
+import type {IMessagesExpire} from "./services/messagesExpire";
+import {MessagesExpire} from "./services/messagesExpire";
+import type {IWebSocketServer} from "./services/webSocketServer";
+import {WebSocketServer} from "./services/webSocketServer";
+import {MessageHandler} from "./messageHandler";
+import {Api} from "./api";
+import type {IClient} from "./models/client";
+import type {IMessage} from "./models/message";
+import type {IConfig} from "./config";
+
+export interface PeerServerEvents {
+	on(event: 'connection', listener: (client: IClient) => void): this;
+	on(event: "message", listener: (client: IClient, message: IMessage) => void): this;
+	on(event: "disconnect", listener: (client: IClient) => void): this;
+	on(event: "error", listener: (client: Error) => void): this;
+}
 
 export const createInstance = ({ app, server, options }: {
   app: express.Application;
-  server: Server;
+  server: HttpServer | HttpsServer;
   options: IConfig;
 }): void => {
   const config = options;
@@ -72,4 +82,4 @@ export const createInstance = ({ app, server, options }: {
 
   messagesExpire.startMessagesExpiration();
   checkBrokenConnections.start();
-};
\ No newline at end of file
+};
diff --git a/src/messageHandler/handler.ts b/src/messageHandler/handler.ts
index 4c81fde..b3dd7a2 100644
--- a/src/messageHandler/handler.ts
+++ b/src/messageHandler/handler.ts
@@ -1,4 +1,4 @@
-import { IClient } from "../models/client";
-import { IMessage } from "../models/message";
+import type {IClient} from "../models/client";
+import type {IMessage} from "../models/message";
 
 export type Handler = (client: IClient | undefined, message: IMessage) => boolean;
diff --git a/src/messageHandler/handlers/heartbeat/index.ts b/src/messageHandler/handlers/heartbeat/index.ts
index 43bf35e..03529ae 100644
--- a/src/messageHandler/handlers/heartbeat/index.ts
+++ b/src/messageHandler/handlers/heartbeat/index.ts
@@ -1,4 +1,4 @@
-import { IClient } from "../../../models/client";
+import type {IClient} from "../../../models/client";
 
 export const HeartbeatHandler = (client: IClient | undefined): boolean => {
   if (client) {
diff --git a/src/messageHandler/handlers/transmission/index.ts b/src/messageHandler/handlers/transmission/index.ts
index bd31c70..3395b32 100644
--- a/src/messageHandler/handlers/transmission/index.ts
+++ b/src/messageHandler/handlers/transmission/index.ts
@@ -1,7 +1,7 @@
-import { MessageType } from "../../../enums";
-import { IClient } from "../../../models/client";
-import { IMessage } from "../../../models/message";
-import { IRealm } from "../../../models/realm";
+import {MessageType} from "../../../enums";
+import type {IClient} from "../../../models/client";
+import type {IMessage} from "../../../models/message";
+import type {IRealm} from "../../../models/realm";
 
 export const TransmissionHandler = ({ realm }: { realm: IRealm; }): (client: IClient | undefined, message: IMessage) => boolean => {
   const handle = (client: IClient | undefined, message: IMessage) => {
diff --git a/src/messageHandler/handlersRegistry.ts b/src/messageHandler/handlersRegistry.ts
index def2ac8..94eba22 100644
--- a/src/messageHandler/handlersRegistry.ts
+++ b/src/messageHandler/handlersRegistry.ts
@@ -1,7 +1,7 @@
-import { MessageType } from "../enums";
-import { IClient } from "../models/client";
-import { IMessage } from "../models/message";
-import { Handler } from "./handler";
+import {MessageType} from "../enums";
+import type {IClient} from "../models/client";
+import type {IMessage} from "../models/message";
+import type {Handler} from "./handler";
 
 export interface IHandlersRegistry {
     registerHandler(messageType: MessageType, handler: Handler): void;
diff --git a/src/messageHandler/index.ts b/src/messageHandler/index.ts
index 7f6c67a..bb02a54 100644
--- a/src/messageHandler/index.ts
+++ b/src/messageHandler/index.ts
@@ -1,10 +1,11 @@
-import { MessageType } from "../enums";
-import { IClient } from "../models/client";
-import { IMessage } from "../models/message";
-import { IRealm } from "../models/realm";
-import { Handler } from "./handler";
-import { HeartbeatHandler, TransmissionHandler } from "./handlers";
-import { IHandlersRegistry, HandlersRegistry } from "./handlersRegistry";
+import {MessageType} from "../enums";
+import {HeartbeatHandler, TransmissionHandler} from "./handlers";
+import type {IHandlersRegistry} from "./handlersRegistry";
+import {HandlersRegistry} from "./handlersRegistry";
+import type {IClient} from "../models/client";
+import type {IMessage} from "../models/message";
+import type {IRealm} from "../models/realm";
+import type {Handler} from "./handler";
 
 export interface IMessageHandler {
   handle(client: IClient | undefined, message: IMessage): boolean;
diff --git a/src/models/message.ts b/src/models/message.ts
index 06c9156..e1d5ec1 100644
--- a/src/models/message.ts
+++ b/src/models/message.ts
@@ -1,8 +1,8 @@
-import { MessageType } from "../enums";
+import type {MessageType} from "../enums";
 
 export interface IMessage {
     readonly type: MessageType;
     readonly src: string;
     readonly dst: string;
-    readonly payload?: any;
+    readonly payload?: string;
 }
diff --git a/src/models/messageQueue.ts b/src/models/messageQueue.ts
index 8653d3e..0ad22d1 100644
--- a/src/models/messageQueue.ts
+++ b/src/models/messageQueue.ts
@@ -1,4 +1,4 @@
-import { IMessage } from "./message";
+import type {IMessage} from "./message";
 
 export interface IMessageQueue {
   getLastReadAt(): number;
diff --git a/src/models/realm.ts b/src/models/realm.ts
index c389aaa..dffd57d 100644
--- a/src/models/realm.ts
+++ b/src/models/realm.ts
@@ -1,7 +1,8 @@
-import { IClient } from "./client";
-import { IMessage } from "./message";
-import { IMessageQueue, MessageQueue } from "./messageQueue";
-import {randomUUID} from "crypto";
+import type {IMessageQueue} from "./messageQueue";
+import {MessageQueue} from "./messageQueue";
+import {randomUUID} from "node:crypto";
+import type {IClient} from "./client";
+import type {IMessage} from "./message";
 
 export interface IRealm {
   getClientsIds(): string[];
diff --git a/src/services/checkBrokenConnections/index.ts b/src/services/checkBrokenConnections/index.ts
index f08d292..6cf2ed2 100644
--- a/src/services/checkBrokenConnections/index.ts
+++ b/src/services/checkBrokenConnections/index.ts
@@ -1,6 +1,6 @@
-import { IConfig } from "../../config";
-import { IClient } from "../../models/client";
-import { IRealm } from "../../models/realm";
+import type {IConfig} from "../../config";
+import type {IClient} from "../../models/client";
+import type {IRealm} from "../../models/realm";
 
 const DEFAULT_CHECK_INTERVAL = 300;
 
diff --git a/src/services/messagesExpire/index.ts b/src/services/messagesExpire/index.ts
index 6301269..8e8ebc0 100644
--- a/src/services/messagesExpire/index.ts
+++ b/src/services/messagesExpire/index.ts
@@ -1,7 +1,7 @@
-import { IConfig } from "../../config";
-import { MessageType } from "../../enums";
-import { IMessageHandler } from "../../messageHandler";
-import { IRealm } from "../../models/realm";
+import {MessageType} from "../../enums";
+import type {IConfig} from "../../config";
+import type {IMessageHandler} from "../../messageHandler";
+import type {IRealm} from "../../models/realm";
 
 export interface IMessagesExpire {
   startMessagesExpiration(): void;
diff --git a/src/services/webSocketServer/index.ts b/src/services/webSocketServer/index.ts
index fe5075a..c920126 100644
--- a/src/services/webSocketServer/index.ts
+++ b/src/services/webSocketServer/index.ts
@@ -1,12 +1,15 @@
-import EventEmitter from "events";
-import { IncomingMessage } from "http";
-import url from "url";
-import WebSocketLib from "ws";
-import { IConfig } from "../../config";
-import { Errors, MessageType } from "../../enums";
-import { Client, IClient } from "../../models/client";
-import { IRealm } from "../../models/realm";
+import {EventEmitter} from "node:events";
+import {IncomingMessage} from "node:http";
+import url from "node:url";
 import type WebSocket from "ws";
+import * as WebSocketLib from "ws";
+import {Errors, MessageType} from "../../enums";
+import type {IClient} from "../../models/client";
+import {Client} from "../../models/client";
+import type {IConfig} from "../../config";
+import type {IRealm} from "../../models/realm";
+import {Server as HttpServer} from "node:http";
+import {Server as HttpsServer} from "node:https";
 
 export interface IWebSocketServer extends EventEmitter {
   readonly path: string;
@@ -29,7 +32,7 @@ export class WebSocketServer extends EventEmitter implements IWebSocketServer {
   private readonly config: CustomConfig;
   public readonly socketServer: WebSocketLib.Server;
 
-  constructor({ server, realm, config }: { server: any; realm: IRealm; config: CustomConfig; }) {
+  constructor({ server, realm, config }: { server: HttpServer | HttpsServer; realm: IRealm; config: CustomConfig; }) {
     super();
 
     this.setMaxListeners(0);
diff --git a/test/services/webSocketServer/index.ts b/test/services/webSocketServer/index.ts
index 0cc0ff9..9590bdc 100644
--- a/test/services/webSocketServer/index.ts
+++ b/test/services/webSocketServer/index.ts
@@ -1,5 +1,6 @@
 import { expect } from 'chai';
 import { Server, WebSocket } from 'mock-socket';
+import type {Server as HttpServer} from 'node:http';
 import { Realm } from '../../../src/models/realm';
 import { WebSocketServer } from '../../../src/services/webSocketServer';
 import { Errors, MessageType } from '../../../src/enums';
@@ -52,10 +53,10 @@ const checkSequence = async (c: WebSocket, msgs: { type: MessageType; error?: Er
 };
 
 const createTestServer = ({ realm, config, url }: { realm: Realm; config: { path: string; key: string; concurrent_limit: number; }; url: string; }): Destroyable<WebSocketServer> => {
-  const server = new Server(url);
+  const server = new Server(url) as Server & HttpServer;
   const webSocketServer: Destroyable<WebSocketServer> = new WebSocketServer({ server, realm, config });
 
-  server.on('connection', (socket) => {
+  server.on('connection', (socket: WebSocket & { on?: (eventName: string, callback: () => void) => void; }) => {
     const s = webSocketServer.socketServer;
     s.emit('connection', socket, { url: socket.url });
 
@@ -101,8 +102,8 @@ describe('WebSocketServer', () => {
     const realm = new Realm();
     const config = { path: '/', key: 'testKey', concurrent_limit: 1 };
     const config2 = { ...config, path: 'path' };
-    const server = new Server('path1');
-    const server2 = new Server('path2');
+    const server = new Server('path1') as Server & HttpServer;
+    const server2 = new Server('path2') as Server & HttpServer;
 
     const webSocketServer = new WebSocketServer({ server, realm, config });
 
@@ -155,11 +156,11 @@ describe('WebSocketServer', () => {
       ws.destroy = async (): Promise<void> => {
         ws.close();
 
-        wait(10);
+         wait(10);
 
-        webSocketServer.destroy?.();
+         webSocketServer.destroy?.();
 
-        wait(10);
+         wait(10);
 
         ws.destroy = undefined;
       };
diff --git a/tsconfig.json b/tsconfig.json
index 767118c..adb198b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -14,7 +14,7 @@
         "noUnusedLocals": true,
         "noUnusedParameters": true,
         "resolveJsonModule": true,
-        "skipLibCheck": true,
+        "skipLibCheck": false,
         "sourceMap": true,
         "outDir": "dist"
     },