I don't think there's any need to sealion the author on this. To your first question: JS's warts are well understood. You must already acknowledge this if you'

I don't think there's any need to sealion the author on this. To your first question: JS's warts are well understood. You must already acknowledge this if you're a TS fan. To your second: TS isn't 'actually' safe, to the extent something like Elm is (i.e. very small chance of runtime errors). This is also no secret - there are lots of examples out there if you care to search for them.