There are two key differences between the Node.js EventTarget
and the
[EventTarget
Web API][]:
- Whereas DOM
EventTarget
instances may be hierarchical, there is no concept of hierarchy and event propagation in Node.js. That is, an event dispatched to anEventTarget
does not propagate through a hierarchy of nested target objects that may each have their own set of handlers for the event. - In the Node.js
EventTarget
, if an event listener is an async function or returns aPromise
, and the returnedPromise
rejects, the rejection is automatically captured and handled the same way as a listener that throws synchronously (see [EventTarget
error handling][] for details).