V8 documents these changes very well[1]. You can write very fast JS code. When carefully written it can have Java like performance[2]. It is just very hard in

V8 documents these changes very well[1]. You can write very fast JS code. When carefully written it can have Java like performance[2]. It is just very hard in practice where most ecosystem is optimized for developer productivity. When performance matter, write your own code and carefully benchmark everything. You can see this working for Typescript and VSCode[3] [1] https://v8.dev/blog https://v8.dev/blog [2] https://benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/javascript.html https://benchmarksgame-team.pages.debian.net/benchmarksgame/... [3] https://github.com/microsoft/TypeScript/pull/43035#issuecomment-788535463 https://github.com/microsoft/TypeScript/pull/43035#issuecomm...