grunt with mocha and istanbul : it feels like maven

Gruntfile.js

module.exports = function(grunt) {

	// set required env vars
	(function() {
		process.env.XUNIT_FILE = 'reports/xunit.xml';
		process.env.ISTANBUL_REPORTERS = 'lcovonly';
	}());

	grunt.initConfig({
		pkg: grunt.file.readJSON('package.json'),

		meta: {
			reports: 'reports'
		},
		
		clean: ['<%= meta.reports %>'],

		jshint: {
			all: ['src/**/*.js', 'test/**/*.js', 'Gruntfile.js'],
			options: {
				jshintrc: '.jshintrc',
				// TODO: soon, real soon! reporters: 'checkstyle'
			}
		},

		simplemocha: {
			options: {
				reporter: 'mocha-istanbul'
			},
			all: { src: ['test/**/*.js'] }
		},

		instrument : {
			files : 'src/**/*.js',
			options : {
				basePath : 'reports/'
			}
		},

		shell: {
			replaceSrc: {
				command: 'mv src src-orig;mv reports/src src',
				options: {
					stdout: true
				}
			},
			moveReport: {
				command: 'mv lcov.info reports/locv.info',
				options: {
					stdout: true
				}				
			},
			resetSrc: {
				command: 'rm -rf src;mv src-orig src',
				options: {
					stdout: true
				}
			}
		}
	});
	
	// task loading
	grunt.loadNpmTasks('grunt-contrib-jshint');
	grunt.loadNpmTasks('grunt-contrib-clean');
	grunt.loadNpmTasks('grunt-simple-mocha');
	grunt.loadNpmTasks('grunt-istanbul');
	grunt.loadNpmTasks('grunt-shell');

	// coverage
	grunt.registerTask('coverage', ['clean', 'instrument', 'shell:replaceSrc', 'simplemocha', 'shell:moveReport', 'shell:resetSrc']);

};