[Touche]

> All of these old things still work.

The old things likely have bugs. And most libraries don't spend a lot of time patching old versions (why should they, it's free software). The longer time passes the less and less likely there will be bug/security patches. So if you want to own those bugs/security issues, sure, stay behind to avoid the cost of upgrading.

[mattferderer]

There are "enterprise type" libraries for JavaScript developers that move slower & focus on stability over performance or productivity increases. Some are backed by a company that offers paid support. While I haven't used it, I've heard good things about Telerik.

[jjawssd]

Where can we learn more about these "enterprise type" libraries?

[zackify]

"The old things likely have bugs" Do you even have experience with React? It sounds like you don't. Because there's no "bugs" with using createClass or proptypes, it's simply been split out into a separate package that you can still use if you want.

[zackify]

Lol love how I get downvotes for stating facts