eventLoopPseudoCode.js

// `eventQueue` is an array that acts as a queue (first-in, first-out)
var eventQueue = [ ];
var event;

// the event loop keeps going "forever"
while (true) {
    // perform a "tick"
    if (eventQueue.length > 0) {
        // get the next event in the queue
        event = eventQueue.shift();

        // now, execute the next event
        try {
            event();
        }
        catch (err) {
            reportError(err);
        }
    }
}