question: how to detect if a widget has been unmounted

[yoshuawuyts]

When building a widget only init and update hooks are exposed. How do I know when a Node is destroyed so I can clean up elements?

I can check if a node is removed by doing in update if (prev.parentNode === null), but that feels somewhat dirty. I was wondering if there's a better way (e.g. using hooks perhaps?) Thanks!

edit: I'm not even sure if update() is called once an element has been unmounted, thus rendering the check moot. A pointer in the right direction would be much appreciated.

[crabmusket]

Does this help? Apparently there should be a destroy method.

[yoshuawuyts]

Ah, yes that is exactly what I was looking for. It wasn't showing up in the other docs. I'll update my https://github.com/yoshuawuyts/virtual-widget package to include this method. Thanks! 🎉