my first grunt file.js

Gruntfile.js

//Gruntfile
module.exports = function(grunt) {

    //Initializing the configuration object
    grunt.initConfig({
        
        // Task configuration
        concat: {
            options: {
                separator: ";\n"
            },
            javascript: {
                src: [
                    // NOTE Core
                    './public/bower/jquery/jquery.min.js',
                    './public/bower/jquery-ui/ui/minified/jquery-ui.min.js',
                    './public/lib/bootstrap/js/bootstrap.min.js',
                    './public/bower/underscore/underscore-min.js',
                    './public/bower/momentjs/min/moment.min.js',


                    // NOTE Angular
                    './public/bower/angular/angular.min.js',
                    './public/bower/angular-route/angular-route.min.js',
                    
                    
                    // NOTE Angular UI
                    './public/lib/ui-bootstrap/ui-bootstrap-tpls-0.6.0.mod.js',
                    './public/bower/angular-ui-date/src/date.js',
                    './public/bower/angular-ui-select2/src/select2.js',
                    './public/bower/angular-ui-sortable/src/sortable.js',
                    './public/bower/angular-ui-utils/modules/keypress/keypress.js',
                    './public/bower/angular-ui-router/release/angular-ui-router.min.js',
                    
                    
                    // NOTE Angular Common
                    './public/bower/angular-common/modules/common/common.js',
                    './public/bower/angular-common/modules/api/api.js',
                    './public/bower/angular-common/modules/drag/drag.js',
                    './public/bower/angular-common/modules/confirm/confirm.js',
                    './public/bower/angular-common/modules/dateRange/dateRange.js',
                    './public/bower/angular-common/modules/mediaelement/mediaelement.js',
                    './public/bower/angular-common/modules/modal/modal.js',
                    './public/bower/angular-common/modules/ngBindHtmlUnsafe/ngBindHtmlUnsafe.js',
                    './public/bower/angular-common/modules/print/print.js',
                    './public/bower/angular-common/modules/redactor/redactor.js',
                    './public/bower/angular-common/modules/strings/strings.js',
                    './public/bower/angular-common/modules/time/time.js',
                    './public/bower/angular-common/modules/upload/upload.js',
                    './public/bower/angular-common/modules/youtube/youtube.js',

                    
                    // NOTE Angular Common Dependencies
                    './public/lib/jquery-form/jquery.form.js',
                    './public/lib/date-range-picker/daterangepicker.js',
                    './public/lib/ng-storage/ngStorage.js',
                    
                    
                    // NOTE Other
                    './public/bower/toastr/toastr.min.js',
                    './public/bower/select2/select2.min.js',
                    './public/bower/lightbox2/js/lightbox-2.6.min.js',
                    './public/bower/mediaelement/build/mediaelement-and-player.min.js',
                    './public/lib/redactor-9/redactor.js'  
                ],
                dest: './public/js/base.js'
            }
        },
        less: {
            development: {
                options: {
                    compress: true,  //minifying the result
                },
                files: {
                    //compiling frontend.less into frontend.css
                    "./public/css/styles.css": "./public/less/styles.less",
                }
            }
        },
        uglify: {
            options: {
                mangle: false  //Use if you want the names of your functions and variables unchanged
            },
            dist: {
                files: {
                    './public/js/base.min.js': './public/js/base.js'
                }
            }
        },
        phpunit: {

        },
        watch: {
            //js: {
                // files: ['./public/apps/**/*.*'],    //watched files
              /**  tasks: ['concat:javascript','uglify'],     //tasks to run
                options: {
                    livereload: true                        //reloads the browser
                }
            },
            */
            less: {
                files: ['./public/less/*.*'],  //watched files
                tasks: ['less'],                          //tasks to run
                options: {
                    livereload: false                        //reloads the browser
                }
            },
        }
    });
    

    // Plugin loading
    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-phpunit');


    // Task definition
    grunt.registerTask('default', ['watch']);
    grunt.registerTask('build', ['concat:javascript', 'uglify', 'less']);
};