The fix LGTM. However, do we consider esbuild emits better output and want to align with it in the future?

https://hyrious.me/esbuild-repl/?version=0.27.2&b=e%00entry.js%00const+baseFontSize+%3D+16%3B%0A%0Aexport+default+px+%3D%3E+parseFloat%28px%29+%2F+baseFontSize%3B&o=--bundle+--keep-names

Originally posted by @hyf0 in #7853 (comment)