socket.ioTypescript无法创建服务器，“此表达式不可调用”

我有以下代码（服务器）：

import express from "express";
import socketio from "socket.io";
import http from "http";

const app = express();
const server = http.createServer(app);
const io = socketio(server);

server.listen(process.env.port || 3000, () => {
  console.log(`App running on port ${process.env.port || 3000}`);
});

但我收到一个错误const io = socketio(server);，它指出：

此表达式不可调用。类型 'typeof import("SOME_PATH/node_modules/socket.io/dist/index")' 没有调用签名

这里究竟有什么问题？

包.json：

 "devDependencies": {
    "@types/express": "^4.17.11",
    "@types/node": "^14.14.27",
    "@types/socket.io": "^2.1.13",
    "nodemon": "^2.0.7",
    "ts-node": "^9.1.1"
  },
  "dependencies": {
    "express": "^4.17.1",
    "socket.io": "^3.1.1",
    "typescript": "^4.1.5"
  }

回答

import express from "express";
import { Server } from "socket.io";
import http from "http";

const app = express();
const server = http.createServer(app);
const io = new Server(server);

server.listen(process.env.port || 3000, () => {
  console.log(`App running on port ${process.env.port || 3000}`);
});