PeerJS provides a complete, configurable, and easy-to-use peer-to-peer API built on top of WebRTC, supporting both data channels and media streams.
Include the library
with npm: npm install peerjs and the usage:
import Peer from 'peerjs';Create a Peer
const peer = new Peer('pick-an-id'); // You can pick your own id or omit the id if you want to get a random one from the server.Connect
const conn = peer.connect('another-peers-id'); conn.on('open', () => { conn.send('hi!'); });Receive
peer.on('connection', (conn) => { conn.on('data', (data) => { // Will print 'hi!' console.log(data); }); });Call
navigator.mediaDevices.getUserMedia({video: true, audio: true}, (stream) => { const call = peer.call('another-peers-id', stream); call.on('stream', (remoteStream) => { // Show stream in some <video> element. }); }, (err) => { console.error('Failed to get local stream', err); });Answer
peer.on('call', (call) => { navigator.mediaDevices.getUserMedia({video: true, audio: true}, (stream) => { call.answer(stream); // Answer the call with an A/V stream. call.on('stream', (remoteStream) => { // Show stream in some <video> element. }); }, (err) => { console.error('Failed to get local stream', err); }); });npm testThis project exists thanks to all the people who contribute. [Contribute]. 
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PeerJS is licensed under the MIT License.