Watch directory for new files

[jacobalberty]

the memfs.watch() function doesn't seem to work on directories. The following code works as expected:

var fs = require('fs');
if (fs.vol) fs.vol.fromJSON({ '/tmp': {}});
var fswatcher = fs.watch('/tmp', console.log);
fs.writeFileSync('/tmp/test.file', 'test data');
fs.unlinkSync('/tmp/test.file');
setTimeout(() => {fswatcher.close()}, 500);

Producing the output:

rename test.file
change test.file
rename test.file

but change it to use memfs instead::

var fs = require('memfs');
if (fs.vol) fs.vol.fromJSON({ '/tmp': {}});
var fswatcher = fs.watch('/tmp', console.log);
fs.writeFileSync('/tmp/test.file', 'test data');
fs.unlinkSync('/tmp/test.file');
setTimeout(() => {fswatcher.close()}, 500);

and I get no output.

EDIT: Changed the test code to be a little simpler and make the two cases much closer to each other with only a single line change.

[alexpts]

Is there any progress?

[williamstein]

I just noticed that memfs doesn't properly update directory timestamps (as it should according to POSIX) when files are added/removed in a directory. This is probably related to your problem. I'll at least make an issue about this.

[williamstein]

I don't think my #869 is relevant. However, I just tried your example with the current version of memfs (from this repo at least) and it worked fine for me, and did show output. Maybe this bug is fixed?

[streamich]

Closing as per #116 (comment) it might be fixed. Please re-open, if not.