Typescript's unsoundness isn't a good thing, but it is way down the list of type-unsafe things inherent in the Boschian nightmare that is frontend development.
Compile-to-JS languages add a big impedance mismatch when you inevitably need to use JS libs. Typescript's JS + types philosophy helps with this issue (it still sucks though).
Compile-to-JS languages add a big impedance mismatch when you inevitably need to use JS libs. Typescript's JS + types philosophy helps with this issue (it still sucks though).