The 'one weird trick' could've been spotted in a graphical bundle analyser. But are they not caching npm packages somewhere, seems like an awful waste downloading from the npm registry over and over? I would think it would be parsing four different versions of the AWS sdk that was so slow.
No worries, it's still broken by the way, I have an enterprise SAML log in for figma, not sure if that helps. I did want to demo this to my company, but maybe you are not ready for prime time just yet?
I think as always in software, "it depends". The author appears to be assuming there are no tests on all of these paths that we will apparently miss when we migrate the code over. If so that is a problem with testing rather than migration.
Also how messy are we talking? I've seen code at a bank where a junior contractor implemented, in reams of code, his own database locking primitives, apparently unaware that the db could handle concurrent accesses on its own.
Rewrites aren't such a big issue these days, this seems a little dated. The real issue where we get painted into a corner now is architectural, say if you went really hard down the microservices route and tried to back up out of it.
Do you mean to say Haskell hasn't solved the halting problem yet?