benchmark fs.promises.realpath/fs.realpath.native vs fs.realpath, fs.realpathSync vs fs.realpathSync.native

[isaacs]

Right now it's using the native forms, but I seem to recall the JS one out-performing it in some scenarios, especially in the loop detection cases.

Another avenue to explore is implementing realpath in this module, but that's complicated. Most of the data is available to short-circuit some of the work in a lot of cases, probably, but in my experience it's a tricky one to get exactly right.