This vs Typescript or Flow or ReScript... as always the JS ecosystem offers an embarrassment of riches. The problem that this one solves seems to be that every

This vs Typescript or Flow or ReScript... as always the JS ecosystem offers an embarrassment of riches. The problem that this one solves seems to be that every other JS type system is delivered by a transpiler, a technique that the JS world has embraced in earnest for better or worse. Unfortunately the JS ecosystem grew so addicted to transpiling that cutting out just one transpiler out of a chain may not be that beneficial unless you can somehow axe the rest of them.