lightbulb.js

//client side, thing is a remote lightbulb
var lightbulb = new Lightbulb();
lightbulb.onchange = e => {
    console.log("Ligthbulb " + e.src + " changed state at " + e.time + " to " + e.dim);
};

lightbulb.requestData()
    .then(function(data) {
        console.log("current power consumption is " + data.power + " Watts");
    })
    .catch(function(err) {
        console.err(err),
    });