javascript
var watch = require('glob-watcher');

// callback interface
watch(["./*.js", "!./something.js"], function(evt){
  // evt has what file changed and all that jazz
});

// EE interface
var watcher = watch(["./*.js", "!./something.js"]);
watcher.on('change', function(evt) {
  // evt has what file changed and all that jazz
});

// add files after it has been created
watcher.add("./somefolder/somefile.js");