a version without polyfills?

### Rationale I was looking at using zenfs, but it seems it's too big! Too many kb. I was going to use it for my REPL https://github.com/NullVoxPopuli/limber/pull/1995 The features that are polyfilled have been shipped for quite some time now. Can they be removed? Consumers of this library can polyfill what they need to, if they need to ### API Proposal _No response_ ### Additional context _No response_