■ signal option on EventTarget.prototype.addEventListener is available
It's a new feature that was added to the standard recently: whatwg/dom#919
import{EventTarget,Event}from"event-target-shim";import{AbortController}from"abort-controller";consttarget=newEventTarget();constac=newAbortController();target.addEventListener("foo",listener,{signal:ac.signal});// Remove the listenerac.abort();
■ Customizing error/warning handling
Since this version, if a listener threw an exception, it causes the uncaughtException event on Node.js or the error event on window. Also, if an operation was ignored silently, it prints warnings with console.warn.
You can customize this behavior.
import{setErrorHandler,setWarningHandler}from"event-target-shim";setErrorHandler((error)=>{// Do something.});setWarningHandler((warning)=>{// Do something.});
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