socket.io emit\ code example

Example 1: socket emit to

io.to(socketid).emit('message', 'whatever');

Example 2: socket emit to specific room using nodejs socket.io

io.on('connection', socket => {  socket.on('disconnecting', () => {    const rooms = Object.keys(socket.rooms);    // the rooms array contains at least the socket ID  });  socket.on('disconnect', () => {    // socket.rooms === {}  });});