htmx

OK, so we can avoid dispatching that event, but we do need to scrub the page for event listeners.

Right it is huge DOM :). We cannot swap blinding with performing the cleanup call?

https://github.com/bigskysoftware/htmx/blob/30f762aa47ed8aa502eca5ea957e9cb800cdb374/src/htmx.js#L883

can I ask you to commend out the event dispatch and see what the profile looks like?

let's see if it's worth making that configurable

the bottom-up view indicates that will help a lot

and, if so, we can make that event cancellable

tbh, it's kind of dumb how it works b/c it will trigger O(n*log(n)) events on elements in the tree due to bubbling

OK, comment that out and lmk what the perf looks like

You want me to comment out the cleanupElement call?

comment out the event dispatch: https://github.com/bigskysoftware/htmx/blob/30f762aa47ed8aa502eca5ea957e9cb800cdb374/src/htmx.js#L882

Got it. Give me a min I will share the profile.

Yes it is working as fast the first load.

OK, next trick, can you change the "bubbles" option to "false" here temporarily: https://github.com/bigskysoftware/htmx/blob/30f762aa47ed8aa502eca5ea957e9cb800cdb374/src/htmx.js#L1858

if that is still acceptable perf, then we can make this an option for that event

I tried change the "bubbles" option to "false". But second call is slow.

ok, final idea, change `cleanUpElement()` to this:
```js
        function cleanUpElement(element, fireEvent) {
            if (fireEvent !== false) {
                fireEvent = triggerEvent(element, "htmx:beforeCleanupElement");
            }
            triggerEvent(element, "htmx:beforeCleanupElement");
            deInitNode(element);
            if (element.children) { // IE
                forEach(element.children, function(child) { cleanUpElement(child, fireEvent) });
            }
        }
```

and then write an event listener on the document to catch that event and call `preventDefault()` on it

if my logic is right, that should prevent all but the first instance of that event firing

Sorry I am not sure how to do it. Is there any reference?