Javascript in many cases runs on v8 which is a just in time compiler. Just in time compilers provide substantial performance benefits for lines of code executed

Javascript in many cases runs on v8 which is a just in time compiler. Just in time compilers provide substantial performance benefits for lines of code executed multiple times. Perhaps v8 team (google) doesn't support typescript (microsoft). https://softwareengineering.stackexchange.com/questions/275497/why-doesnt-v8-compile-typescript-instead-of-javascript https://softwareengineering.stackexchange.com/questions/2754...