Recursive mkdir coming to Node core

[RyanZim]

Just opening an issue to track this.

A recursive flag was added to fs.mkdir in nodejs/node#21875.

It's unreleased so far, but it's in the 10.9.0 release proposal: nodejs/node#22295.

There is currently an open debate on how to determine in code whether the recursive flag is supported in the running Node version: nodejs/node#22302.

When this feature lands, I'd like to use it for ensureDir in environments that support it. Long-term, we may consider deprecating/removing mkdirp/mkdirs/ensureDir when all supported Node versions support it (separate discussion for another day).

[RyanZim]

This was pushed back, and will not be going into Node 10.9.0: nodejs/node#22295 (comment)

[RyanZim]

Unblocked as of nodejs/node#21875 (comment); should land in a future v10.x release.

[RyanZim]

This was released in Node v10.12.0; perhaps we should revisit this?

[RyanZim]

Just dropping this here for future reference: https://github.com/isaacs/node-mkdirp#choosing-a-recursive-mkdir-implementation

[RyanZim]

I'm inclined to fork https://github.com/sindresorhus/make-dir into this project to use as the implementation here. It uses the native solution where possible, and the fallback solution fixes #524. The one sticker is that it depends on semver to determine if the current node version supports the recursive flag. I guess I'll have to hack some simpler version sniffing to avoid adding that dep.