Node.js git version module

gitversion.js

var exec = require('child_process').exec;
var semver = require('semver');

function update() {

	var child = exec('git describe --dirty', function (error, stdout, stderr) {
	  exports.string = stdout.replace('\n', '').replace('\r', '');

	  if(error) {
	  	 console.log(error);
	  	 exports.string = "Git Version Error";
	  	 return;
	  }

	  if(semver.valid(exports.string)) {
	  	exports.clean = semver.clean(exports.string);
	  	exports.major = semver.major(exports.string);
	  	exports.minor = semver.minor(exports.string);
	  	exports.patch = semver.patch(exports.string);
	  } else {
	  	console.log("No semantic version tag found");
	  }
	});
};

update();