JavaScript type confusion: Bypassed input validation

This always were a problem, but somehow it is getting bigger.

It draw my attention again, regarding more obscure situations.

I was puzzled when I saw this (diff):

https://util.unicode.org/UnicodeJsps/confusables.jsp?a=.&r=I...

https://util.unicode.org/UnicodeJsps/confusables.jsp?a=.&r=I...

https://docs.google.com/spreadsheets/d/13t4l-kO3qAio4RCF3j1l...