Gruntfile that is used in lunapps.com building process

Gruntfile.js

/**
 * lunapps.com's Gruntfile
 */
 
module.exports = function (grunt) {
    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-contrib-jade');
    grunt.loadNpmTasks('grunt-contrib-cssmin');
    grunt.loadNpmTasks('grunt-contrib-compress');
    grunt.loadNpmTasks('grunt-contrib-copy');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-clean');
    grunt.loadNpmTasks('grunt-sitemap-xml');

    try {
        grunt.loadNpmTasks('grunt-contrib-watch');
        grunt.loadNpmTasks('grunt-contrib-connect');
    }
    catch (e) {
        //We are running on the server. Connect and watch won't be available here!
    }

    grunt.initConfig({
        clean: {
            'compile-prod': ['build/']
        },
        less: {
            'compile-prod': {
                files: {
                    'build/style.css': 'style/style.less'
                }
            },
            'compile-blog': {
                files: {
                    'build/blog.css': 'style/blog.less'
                }
            }
        },
        jade: {
            'compile-prod': {
                files: {
                    'build/index.html': ['jade/index.jade'],
                    'build/404.html': ['jade/404.jade'],
                    'build/portfolio/index.html': ['jade/portfolio.jade'],
                    'build/services/index.html': ['jade/services.jade'],
                    'build/about-us/index.html': ['jade/about-us.jade'],
                    'build/contact-us/index.html': ['jade/contact-us.jade'],
                    'build/portfolio/text-a-letter/index.html': ['jade/projects/text-a-letter.jade'],
                    'build/portfolio/bidit/index.html': ['jade/projects/bidit.jade']
                }
            }
        },
        cssmin: {
            'compile-prod': {
                files: [{
                    expand: true,
                    cwd: 'build',
                    src: ['*.css', '!*.min.css'],
                    dest: 'build',
                    ext: '.css',
                    extDot: 'last'
                }, {
                    expand: true,
                    cwd: 'build/style/lib',
                    src: ['*.css', '!*.min.css'],
                    dest: 'build/style/lib',
                    ext: '.css',
                    extDot: 'last'
                }]
            }
        },
        uglify: {
            options: {
                mangle: true,
                compress: {
                    drop_console: true,
                    dead_code: true,
                    properties: true,
                    drop_debugger: true,
                    conditionals: true,
                    comparisons: true,
                    booleans: true,
                    loops: true,
                    unused: true,
                    if_return: true,
                    join_vars: true,
                    keep_fargs: true,
                    keep_fnames: true
                }
            },
            'compile-prod': {
                files: [{
                    expand: true,
                    cwd: 'js',
                    src: ['**/*.js', '!*/*.min.js'],
                    dest: 'build/js',
                    ext: '.js',
                    extDot: 'last'
                }]
            }
        },
        copy: {
            'compile-prod': {
                files: [
                    {
                        expand: true,
                        src: ['fonts/**', 'img/**', 'video/**','files/**', 'style/lib/*.css', 'style/lib/*.png', 'js/lib/*.js','sitemap.xml', 'crossdomain.xml', 'robots.txt'],
                        dest: 'build'
                    },
                    {
                        expand: true,
                        src: ['style/lib/*.css', 'style/'],
                        dest: 'build'
                    }
                ]
            },
            'script-develop': {
                files: [
                    {
                        expand: true,
                        src: ['js/*.js'],
                        dest: 'build'
                    }
                ]
            }
        },
        compress: {
            'compile-prod': {
                options: {
                    mode: 'gzip',
                    level: 9
                },
                expand: true,
                src: ['build/**/*.js', 'build/**/*.css', 'build/**/*.html', 'build/**/*.svg', 'build/**/*.xml', 'build/**/*.txt', 'build/**/*.sketch'],
                extDot: 'last',
                rename: function (dest, src) {
                    return src + '.gz';
                }
            }
        },
        connect: {
            server: {
                options: {
                    livereload: true,
                    base: 'build'
                }
            }
        },
        watch: {
            options: {
                livereload: true
            },
            styles: {
                files: ['style/**/*.less'],
                tasks: ['less:compile-prod'],
                options: {
                    spawn: false
                }
            },
            jade: {
                files: ['**/*.jade', '**/*.svg'],
                tasks: ['jade:compile-prod'],
                options: {
                    spawn: false
                }
            },
            scripts: {
                files: ['js/*.js'],
                tasks: ['copy:script-develop'],
                options: {
                    spawn: false
                }
            }
        },
        sitemap_xml: {
            custom_options: {
                options: {
                    changefreq: 'weekly',
                    siteRoot: 'https://lunapps.com/',
                    priority: '1'
                },
                files: [
                    {
                        cwd: 'build/',
                        src: [
                            '**/*.html',
                            '!**/404.html'
                        ],
                        dest: 'build/landing.xml'
                    }
                ]
            }
        }
    });

    grunt.registerTask('default', [
        'clean:compile-prod',
        'less:compile-prod',
        'less:compile-blog',
        'jade:compile-prod',
        'copy:compile-prod',
        'copy:script-develop',
        'connect:server',
        'watch']);

    grunt.registerTask('compile-prod', [
        'clean:compile-prod',
        'less:compile-prod',
        'jade:compile-prod',
        'copy:compile-prod',
        'cssmin:compile-prod',
        'uglify:compile-prod',
        'sitemap_xml',
        'compress:compile-prod']);
};