Straight from the docs: just uglify being honest

Your mother must be the most efficient automated javascript build system ever.

Cause no one could come pop out more uglified than you.

I spent half of the day trying to make the Grunt script of my node project which uses ECMAscript 6 (Harmony) and make compatible with Uglify-JS by using Babel... Then I found there was a branch of Uglify-JS for Harmony and I only had to update my dependency which took me 2min -_-

Question: We are planning to transition our old ES5 codebase to modern ES6/ES7 and even typescript.

What would be the build tool you would recommend if we want to start supporting ES6/ES7 and even Typescript?

Webpack, Vite some other?

This is a vanilla Javascript Project with large codebase it's been built using custom build tools like UglifyJS and UglifyCSS and of after lots of begging it finally got the green light to move to a more modern build tool and start supporting a more standard JavaScript Features.

Mainly I want to move to TypeScript but transition would be slow so the build tool would need to support .ts and .js as well, that is traspile both the .ts and .js into one final production build.

What build tool would you recommend for that?