Packages UglifyJS into a nice, lightweight command-line tool for minifying JavaScript files.

minify.js

// CREATED BY:
//      Connor Grady on May 15, 2013
//      http://connorgrady.com/
// USAGE:
//      node minify myfile.js
//      node minify file1.js file2.js file3.js
// OUTPUT:
//      file1.js --> file1.min.js

var UglifyJS = require('uglify-js'),
    fs = require('fs'),
	path = require('path'),
	Files = process.argv.splice(2);

Files.forEach(function (arg) {

	// Check for .js
	if (path.extname(arg) !== '.js')
		throw 'ERROR: "'+arg+'" is not a .js file!';

	// Get absolute path for input & output files
	var iF = path.join(__dirname, arg),
		oF = path.join(__dirname, arg.substring(0,arg.length-3) + '.min.js' ),
		min = UglifyJS.minify(iF);

	fs.writeFile(oF,min.code,function (err){
		if (err) throw err;
		console.log('MINIFIED: "'+path.basename(iF)+'"  -->  "'+path.basename(oF)+'"');
	});

});

package.json

{
    "name": "UglifyJS-Command-Line",
	"description": "Packages UglifyJS into a nice, lightweight command-line tool for minifying JavaScript files.",
	"version": "1.0",
	"dependencies": {
		"uglify-js": "2.2.*"
	}
}