Gruntfile.js

module.exports = function (grunt) {

    var banner = grunt.file.readJSON('package.json').banner;

    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-contrib-copy');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-este-watch');
    grunt.loadNpmTasks('grunt-contrib-htmlmin');
    grunt.loadNpmTasks("grunt-image-embed");
    grunt.loadNpmTasks("grunt-cdnify");

    var pkg = grunt.file.readJSON('package.json');

    grunt.initConfig({
        pkg: pkg,
        src: {
            js: ['src/**/*.js'],
            libs: ['libs/*.js'],
            html: ['src/index.html'],
        },
        copy: {
            assets: {
                files: [
                    {
                        expand: true,
                        cwd: 'src/assets/',
                        src: '**',
                        dest: 'dist/assets/',
                    },
                ],
            },
            deploy: {
                files: [
                    {
                        expand: true,
                        cwd: 'dist/',
                        src: '**',
                        dest: 'deploy/',
                    },
                ],
            },
        },
        less: {
            less: {
                options: {
                    cleancss: true,
                },
                files: {
                    'dist/style.css': ['src/less/main.less'],
                }
            }
        },
        esteWatch: {
            options: {
                dirs: [
                    'src/**/',
                    'libs/**',
                ],
                livereload: {
                    enabled: false,
                },
            },
            js: function (filepath) {
                if (filepath.substr(0, 4) === 'libs') {
                    return ['libs'];
                }
                return ['js'];
            },
            less: function (filepath) {
                return ['css'];
            },
            html: function (filepath) {
                return ['index'];
            },
            '*': function (filepath) {
                return ['default'];
            },
        },
        uglify: {
            libs: {
                files: {
                    'dist/libs.js': ['<%= src.libs %>'],
                },
            },
            app: {
                options: {
                    banner: '/*!\n * ' + banner.join('\n * ') + '\n */\n',
                    preserveComments: false,
                    mangle: true,
                },
                files: {
                    'dist/app.js': ['<%= src.js %>'],
                },
            },
        },
        htmlmin: {
            index: {
                options: {
                    removeComments: true,
                    collapseWhitespace: true,
                    collapseBooleanAttributes: true,
                    removeAttributeQuotes: true,
                },
                files: {
                    'dist/index.html': 'src/index.html',
                },
            },
        },
        imageEmbed: {
            dist: {
                src: ['dist/style.css'],
                dest: 'dist/style.css',
                options: {
                    deleteAfterEncoding: true,
                }
            }
        },
        cdnify: {
            deploy: {
                options: {
                    rewriter: function (url) {
                        if (url.indexOf('data:') === 0 || url.substr(0, 2) === '//' || url === '/') {
                            return url;
                        } else {
                            return pkg.cdn + url + '?' + Math.floor(Math.random() * 999999);
                        }
                    },
                },
                files: [{
                    expand: true,
                    cwd: 'deploy',
                    src: '**/*.{css,html}',
                    dest: 'deploy',
                }]
            }
        },
    });


    grunt.registerTask('indexBanner', function () {
        var contents = grunt.template.process(grunt.file.read('dist/index.html').replace('<head>', '<head>\n<!--\n ' + banner.join('\n ') + '\n-->\n'));
        grunt.file.write('dist/index.html', contents);
    });

    grunt.registerTask('cssBanner', function () {
        grunt.file.write('dist/style.css', '/*!\n * ' + grunt.template.process(banner.join('\n * ')) + '\n */\n' + grunt.file.read('dist/style.css'));
    });

    grunt.registerTask('default', ['copy:assets', 'index', 'css', 'js']);

    grunt.registerTask('index', ['htmlmin:index', 'indexBanner']);
    grunt.registerTask('libs', ['uglify:libs']);
    grunt.registerTask('js', ['uglify:app']);
    grunt.registerTask('css', ['copy:assets', 'less:less', 'imageEmbed', 'cssBanner']);

    grunt.registerTask('deploy', ['default', 'copy:deploy', 'cdnify'])

    grunt.registerTask('watch', ['esteWatch']);
};