This is a very simple demo of map applications connected through web sockets (client-server communication) and BroadcastChannel
(browser window/tabs communicate with each other).
This is based on the Getting Started guide of the Socket.IO website and uses its chat-example repository (https://github.com/socketio/chat-example) as starting point.
To start the demo:
git clone https://github.com/ahocevar/everything-connected
cd everything-connected
npm install
npm start
Then navigate to http://localhost:3000/