The comparison of recursive mkdir implementations says that Node's built-in fs.mkdir doesn't return the first directory created.

However, the official Node documentation says it does so when {recursive: true} is passed:

Returns: Upon success, fulfills with undefined if recursive is false, or the first directory path created if recursive is true.

Was this added in a later Node version not specified in the docs, or does it behave differently from mkdirp? If not, it may be worth clarifying in the readme.