I figure this out and will share the solution in case of someone get stuck with the same thing.
The issue was in charset encoding so Safari was replacing all blank spaces of JS files with the character Â. It was caused because I forgot to set it in the HTML and since Mozilla browsers seem to use UTF-8 as default (when you don’t declare it) I never had noticed the problem.
In any case I fixed it by just adding the clause charset=“UTF-8” in the HTML meta tag.
I got the clue that it could be the issue after to find this thread and this other one in GitHub.
