Comment by rareitem

I find the Express 5 situation hilariously wonderful.

It’s basically done. Any other project would’ve slapped a major release on it and fixed any issues that came up in a patch. Everyone who is using it says it works great.

But the maintainer won’t release it because they don’t feel it’s gotten enough testing. So they’re just waiting. And no one really cares because Express 4 is great and works fine.

It’s a beautiful example of mature software development.

And that's been in production for over 8 years https://github.com/expressjs/express/issues/2755