[saagarjha]

Most platform vendors have this in some form or the other. WebKit has far more here, for example: https://github.com/WebKit/WebKit/blob/main/Source/WebCore/pa.... These are cool and all for when you want software to keep working, but if you're the person writing these, the one thing you should absolutely make sure to do is reach out to the authors of the software you're working around to see if they are willing to fix their code. Most of the time they are! But I invariable see code go into the OS/browser/whatever and engineers bemoaning how they have to work super hard on backcompat, and I'm like…"ok, but when did you send us a bug?"