vol.toJSON() does not contain stats of a file

[marco-a]

First of all, great library!

I wanted to use it for unit testing a part of my application.

Sadly it seems like vol.toJSON() does not export file stats (such as uid, gid etc.).

I had a quick glance over the source code and it looks like these are returned somewhere:

memfs/src/node.ts

Lines 214 to 229 in 6842252

	toJSON() {
	return {
	ino: this.ino,
	uid: this.uid,
	gid: this.gid,
	atime: this.atime.getTime(),
	mtime: this.mtime.getTime(),
	ctime: this.ctime.getTime(),
	perm: this.perm,
	mode: this.mode,
	nlink: this.nlink,
	symlink: this.symlink,
	data: this.getString(),
	};
	}
	}

const vol = memfs.Volume.fromJSON({ '/foo': 'bar' });
vol.readFileSync('/foo'); // bar
vol.chownSync("/foo", 200, 200)
// logs 200 as expected
console.log(vol.statSync("/foo").uid)
// does not export set uid & gid
console.log(vol.toJSON())

Is this intentional ?

[G-Rath]

Yes, because toJSON is meant to be the opposite of fromJSON, which doesn't support setting stats of a file.

[takase1121]

Is it possible to make it export the stat alongside the content? This'll allow users to preserve the entire filesystem (including metadata) in localStorage or maybe IndexedDB without messing up the mtimes.