EventEmitter vs. Callbacks
Learn about the difference between EventEmitter and callbacks in Observer pattern.
We'll cover the following...
A common dilemma when defining an asynchronous API is deciding whether to use an EventEmitter instance or simply accept a callback. The general differentiating rule is semantic: callbacks should be used when a result must be returned in an asynchronous way, while events should be used when there’s a need to communicate that something has happened.
But besides this simple principle, a lot of ...