monitor.js

/*jshint strict:false*/
/*global require:true, console:true, __dirname:true*/
var path = require('path'),
	exec = require('child_process').exec,
	//developmentFilesPath - relative path from this file to source folder, don't add trailing splash
	developmentFilesPath = '..',
	watcher = require('watch-tree-maintained').watchTree(path.join(__dirname, developmentFilesPath), {
		match : /\.(scss|js)$/g
	});

function handleProcessTermination(err, sysout, syserr) {
	if (err) {
		console.log(err + '\n');
	}
	if (sysout) {
		console.log(sysout + '\n');
	}
	if (syserr) {
		console.log(syserr + '\n');
	}
}

function runCommand(command) {
	exec(command, handleProcessTermination).stdin.end();
}

watcher.on('fileModified', function (path, stats) {
	// if (~path.search(/\.scss$/)) {
	// 	runCommand('compass compile');
	// } else
	if (~path.search(/\.js$/) && !~path.search(/build-js\//)) {
		runCommand('node app.build.js');
	}
});