The problem is not as simple as just a missing stdlib.
The problem is a standard lib that doesn't ship with the browser compounded by the fact that javascript build pipelines can't easily and in fact don't do dead code elimination. So shipping an entire stdlib 60-70% of which you don't actually use to the browser is a terrible idea.
Javascript really is a special snowflake here and refusing to recognize that is problematic to say the least.
The problem is a standard lib that doesn't ship with the browser compounded by the fact that javascript build pipelines can't easily and in fact don't do dead code elimination. So shipping an entire stdlib 60-70% of which you don't actually use to the browser is a terrible idea.
Javascript really is a special snowflake here and refusing to recognize that is problematic to say the least.