Please stop using CDNs for external JavaScript libraries
I started my career, and have spent most of it, working in places where the production network was (almost) airgapped from the entire internet (MPAA accredited facilities). I would say that the general quality of software and and robustness when it comes to dependencies is so much greater in these places. If you want to use some library, it’s up to you to get it, and its dependencies, check the versions are compatible and package it up and build it all internally. Yup, it’s work... Do you need this library? Is it actually any good? Is the license compatible with our usage? This is all basic code quality stuff that’s often completely overlooked when people can just pull in whatever junk from whatever trendy repo is the hotness nowadays. And then when that goes down/bankrupt - it’s up to you to fix something you’ve no control over.