> Copy pasting from one language to another is way worse than complete rewrite with actual idiomatic and useful code.

But translating with automated tools is a much faster experiment.

Sometimes (not always), rewriting from scratch ends up in a big loss of time and resources and never replaces the old version.

It depends on your goals. If your only initial goal is to ensure the safety of your code, and that is rather important for a browser!

These are two different kinds of rewrites, for two different kinds of codebases, in two different situations. The important thing is to know which kind of rewrite you're doing, and have the whole team onboard.

The sort of rewrite you're talking about can work well at an early stage of a project, in the spirit of Fred Brooks's "plan to throw one away". But for a mature browser like Ladybird that's trying to not break the user experience, it's much better to have a pure translation step, and then try to improve or refactor it later.