rum

``
rum [] [-- ]
Watchify plus static file server plus auto-reload.

Options:
Directory of static files to serve, images/fonts
If omitted, the server is disabled

Required. Where to dump the browserify bundle

Arguments after the '--' will be passed along to browserify

--exec, -x Shell command to run on each update before browserify,
and before reload. Will capture any preceeding
--watch arguments, which are not already captured by
another --exec. Can use this multiple times.

--watch, -w Additional glob pattern to monitor for changes.
Can use this multiple times. Position is important.
Will apply to the next --exec argument or to the
browserify watcher if one is not found.

--port, -p Bind server to this [address:]port instead of 0.0.0.0 and
and random port

--router, -r Redirect all requests to this path but keep the
displayed url unchanged. Use this if you've got
client-side routing and want to avoid 404s.

--version, -v Show version number

Basic usage:
rum dist dist/bundle.js -- src/index.js
Watch scss:
rum -w 'src/*/.scss' -x 'make dist/bundle.css' dist dist/bundle.js -- src/index.js
More browserify options:
rum dist dist/bundle.js -- src/index.js -t babelify -t [envify purge]
`

You can also listen for reload events in your browser bundle and do something special that depends on the file name. For example, you can hot reload stylesheets like this:
`javascript
// $ rum dist dist/index.js -w 'src/*/.scss' -x 'make dist/bundle.css' -- src/hot-css.js src/app.js

// src/hot-css.js
require('rum').on('reload', function (files) {
for (let index = 0; index < files.length; ++index) {
if (!/\.(scss|sass|less|css)$/.test(files[index])) {
return window.location.reload(true)
}
}

// Only the css was changed. Time for hot reload!
reloadCSS('index.css')
})

/**
* Reload just the css bundle
* without refreshing the whole page
*/
function reloadCSS(href) {
let links = document.getElementsByTagName('link')
let index = links.length
let cur = null
while (cur = links[--index]) {
if (cur.getAttribute('href') === href) {
cur.href = ''
cur.href = href
console.warn('reloaded ' + href)
return
}
}
}
`

#### Using VIM?
You may need to add set backupcopy=yes` to your vimrc. The default method of saving files does not play nicely with filewatchers like chokidar.