People forget that: a) LastPass is extremely old b) Browser extensions used to be completely different. You needed to call out to native code to do tons of st

People forget that: a) LastPass is extremely old b) Browser extensions used to be completely different. You needed to call out to native code to do tons of stuff because the JS apis were extremely limited and slow. So it was either "roll crypto in JS" or "make users install a binary", the latter stopped being possible over something like a decade ago.