class Bootsnap::LoadPathCache::LoadedFeaturesIndex

def extension_elidable?(feature)

See .

with calling a Ruby file 'x.dylib.rb' and then requiring it as 'x.dylib'.)
will _never_ run on MacOS, and therefore think they can get away
(E.g. It's unlikely that someone will know that their code
to name files in a way that assumes otherwise.
will be tried on all platforms, and that people are unlikely
So optimistically pretend that all known elidable extensions
handwavy about what will be tried when and in what order.
This is complex and platform-dependent, and the Ruby docs are a little

will implicitly try 'x.rb' if you ask for 'x'.
someone tries to 'require' the file without it? E.g. Ruby
Might Ruby automatically search for this extension if 
def extension_elidable?(feature)
  feature.to_s.end_with?(".rb", ".so", ".o", ".dll", ".dylib")
end