NodeJS version of pre-commit to run jshint, jscs, and simple scan

pre-commit

#!/usr/local/bin/node
var cp = require('child_process');
module.paths.push('/usr/local/lib/node_modules');  // hacky hacky hacky to get to async
var async = require('async');

var getJsFiles = 'git diff --cached --name-only --diff-filter=ACM | grep ".js$"';

cp.exec(getJsFiles, function (err, stdout, stderr) {

	var failCount = 0;
	var jsFiles = [];

	if (err) {
		console.log('stderr: ' + stderr);
		process.exit(1);
	}

	stdout.split(/\r?\n/).forEach(function (line) {
		if (line.length > 0) {
			jsFiles.push(line);
		}
	});

	console.log('\n\033[36mJavaScript validation:\033[0m');

	async.forEachSeries(jsFiles, function (file, callback) {
		var jsFile = __dirname + '/' + file;
		async.series([
			function (tcb) {
				process.stdout.write('\n\t\033[36mChecking ' + file + '\033[0m ');
				tcb();
			},
			function (tcb) {
				cp.exec('jshint ' + jsFile, function (err, stdout, stderr) {
					if (err) {
						fail('JSHint');
						failCount += 1;
					} else {
						pass('JSHint');
					}
					tcb();
				});
			},
			function (tcb) {
				cp.exec('jscs ' + jsFile, function (err, stdout, stderr) {
					if (err) {
						fail('JSCS');
						failCount += 1;
					} else {
						pass('JSCS');
					}
					tcb();
				});
			},
			function (tcb) {
				cp.exec('egrep -e \'console.log\' -e debugger ' + jsFile + ' -m 1 | wc -l', function (err, stdout, stderr) {
					if (stdout.trim() !== '0') {
						fail('Scan');
						failCount += 1;
					} else {
						pass('Scan');
					}
					tcb();
				});
			}
			], function (err) {
				callback();
			});
	},
	function (err) {

		console.log('\n\n\033[36mJavaScript validation complete\033[0m\n');

		if (failCount > 0) {
			console.log('\033[41mCOMMIT FAILED:\033[0m Your commit contains files that do not pass one or more checks. ' +
				'Please fix the errors and try again.\n');
		} else {
			console.log('\033[32m 🍺  COMMIT SUCCEEDED\033[0m\n');
		}

		process.exit(failCount);

	});

});

function pass(message) {
	process.stdout.write('\033[32m' + message + '\033[0m ');
}

function fail(message) {
	process.stdout.write('\033[31m' + message + '\033[0m ');
}