Explain the result of this code execution

Explain the result of that code execution:

var EventEmitter = require("events");

var crazy = new EventEmitter();

crazy.on('event1', function () {
    console.log('event1 fired!');
    crazy.emit('event2');
});

crazy.on('event2', function () {
    console.log('event2 fired!');
    crazy.emit('event3');

});

crazy.on('event3', function () {
    console.log('event3 fired!');
    crazy.emit('event1');
});

crazy.emit('event1');

You’ll get an exception that basically says the call stack has exploded. Why? Every emit will invoke synchronous code. Because all callbacks are executed in a synchronous manner it’ll just recursive call itself to infinity and beyond.

Output:

console.js:165
    if (isStackOverflowError(e))
        ^

RangeError: Maximum call stack size exceeded
    at write (console.js:165:9)
    at Console.log (console.js:197:3)
    at EventEmitter.<anonymous> (C:\Work\Node\main.js:6:13)
    at EventEmitter.emit (events.js:182:13)
    at EventEmitter.<anonymous> (C:\Work\Node\main.js:18:11)
    at EventEmitter.emit (events.js:182:13)
    at EventEmitter.<anonymous> (C:\Work\Node\main.js:12:11)
    at EventEmitter.emit (events.js:182:13)
    at EventEmitter.<anonymous> (C:\Work\Node\main.js:7:11)
    at EventEmitter.emit (events.js:182:13)