[Karupan]

I've become increasingly disillusioned with the JS ecosystem over the past couple of years, but React still delivers. I can still chuck it in a script tag and start writing components if needed (without JSX). I haven't really used hooks yet and don't plan to, but as long as "legacy" class based components are supported, I will use them.

Thanks for maintaining backward compatibility, which is not very common in the JS world. And congrats on the release!

[oaxacaoaxaca]

Just chiming in to say that I too hope class components will continue to be supported. I worry that they'll announce otherwise in a couple years.

Class components are so stupidly simple to read and write. I appreciate the work put into function components, but to me they make things unnecessarily complex. Just the fact that they took callbacks and other functions from methods – where things are separate, clean, standard – to nested functions – where things are not separate (some local variables, some closure variables), not clean (no possible way to unit test a nested function in isolation), and not standard (object methods are a language feature, use them!) – seems like a huge step backward.

[nightski]

You can create isolated functions instead of nested functions wherever you want. Just pass in params instead of using closures. This is entirely up to the developer.

[untog]

You can, yes. But the developer working on the codebase you’re going to inherit might not. Class components are usefully opinionated in that way.

[oaxacaoaxaca]

Yep. And isolated functions are a solution, but sometimes it just makes way more sense for that function to be a method of a class. And for the function component to be a class component. I think there's space for both types of components, and I just hope that class components don't become deprecated.

[nightski]

Absolutely there are cases where class components make sense. I highly doubt they would ever depreciate them.

[dmitryminkovsky]

Not really lots of functions do have to be declared in useEffect for dependency management.

[nightski]

I'm not aware of any case in which this is true. Effects are run on every render unless you explicitly specify dependencies in the second argument of the hook.