What is @types/socket.io?
@types/socket.io provides TypeScript type definitions for the Socket.IO library, which is used for real-time, bidirectional communication between web clients and servers.
What are @types/socket.io's main functionalities?
Server-Side Socket Handling
This feature allows you to set up a Socket.IO server that listens for client connections and disconnections.
const io = require('socket.io')(3000);
io.on('connection', (socket) => {
console.log('a user connected');
socket.on('disconnect', () => {
console.log('user disconnected');
});
});
Client-Side Socket Handling
This feature allows you to set up a Socket.IO client that connects to a server and listens for connection and disconnection events.
const socket = io('http://localhost:3000');
socket.on('connect', () => {
console.log('connected to server');
});
socket.on('disconnect', () => {
console.log('disconnected from server');
});
Emitting and Listening to Events
This feature allows you to emit and listen to custom events between the server and client.
const io = require('socket.io')(3000);
io.on('connection', (socket) => {
socket.on('chat message', (msg) => {
io.emit('chat message', msg);
});
});
const socket = io('http://localhost:3000');
socket.emit('chat message', 'Hello World');
socket.on('chat message', (msg) => {
console.log('message: ' + msg);
});
Other packages similar to @types/socket.io
@types/ws
@types/ws provides TypeScript type definitions for the ws library, which is a simple to use, blazing fast, and thoroughly tested WebSocket client and server for Node.js. It is more lightweight compared to Socket.IO but does not support fallback options like long-polling.
@types/primus
@types/primus provides TypeScript type definitions for the Primus library, which is a flexible and extensible framework for real-time applications. Primus supports multiple real-time frameworks and can switch between them without changing the application code.
@types/sockjs
@types/sockjs provides TypeScript type definitions for the SockJS library, which is a JavaScript library that provides a WebSocket-like object for browsers. SockJS is designed to work with existing WebSocket servers and provides a fallback for browsers that do not support WebSockets.