Add --ignore-watch option, pass --delay option from cmd.js, documentation.

[STRML]

--ignore-watch=glob (or {ignoreWatch: String|RegExp}) allows the user to cut down on used CPU / open file descriptors by ignoring watching of certain files. Useful for ignoring files you know should not change, like node_modules.

Fixes #11, and does not clobber the ignore option like #31.

[cggaurav]

+1

[zertosh]

@STRML: I really like this. It seems that you were not only not adding watchers but you weren't caching ignored files. I think the value here is not attaching watchers but still caching.

I know this is almost a year later. If you don't have a use for this anymore, please let me know and I'll make the changes.

[zertosh]

I think chokidar can handle this. Starting with chokidar@1.0.0 you can pass an ignored glob. If I'm understanding this correctly, then calling

chokidar.watch('/src/node_modules/react/lib/react.js', {ignored: '**/node_modules/**'});

still returns a chokidar instance, but it won't actually attach any fs watchers. chokidar instances are cheap, it's the fs watching that's expensive. @es128 can you confirm that this is chokidar's behavior across fs.watch / fs.watchFile / fsevents?

[es128]

Yep, same sort of thing happening on the other side

https://github.com/paulmillr/chokidar/blob/165273fa3ddfa6c254d0e4bd9186a35d2251caa3/lib/nodefs-handler.js#L441

[zertosh]

Thanks @es128! Is a stable chokidar@1.0.0 in the near future? Or is it pretty safe/stable as it is right now?

[es128]

It is very stable as is, and I'm also on the verge of releasing 1.0.0.

There's a handful of open issues still, but no showstoppers.

[zertosh]

Perfect, thanks again @es128.

@STRML How about a PR to bump chokidar and pass along an ignore-watch option as ignored to chokidar?

[zertosh]

Sorry to bombard you @STRML - but going through the issue/PR backlog made me rethink this.

Closing and moving discussion to #162.

[zertosh]

--ignore-watch (among other things) was added in #170 and published as 3.0.0.

@es128 We're now using chokidar 1.0.0-rc4. Awesome job on that!

[es128]

FYI rc5 is on the cusp of being published, and as long as nothing explodes, 1.0.0 in about a week