Gruntfile.js

const sass = require('node-sass');

module.exports = function (grunt) {

    // set up config
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json')
        ,
        watch: {
            sources: {
                files: ['*.js', 'sass/*.scss'],
                tasks: ['develop:server', 'build'],
                options: { nospawn: true }
            }
        }
        ,
        sass: {
            options: {
                implementation: sass
            },
            all: {
                files: { 'statics/css/all.css': 'sass/all.scss' }
            }
        }
        ,
        develop: {
            server: {
                file: 'index.js',
                args: '--env=dev'
            }
        }

        ,
        uglify: {

            clientSideJs: {
                options: {
                    wrap: 'enclose'
                },

                files: {
                    'statics/js-concat/all.js': require('./sourceList.js').map(function (name) {
                        return 'statics' + name;
                    })
                }
            }
        }
        ,
        cssmin: {
            minifyCss: {
                files: {
                    'statics/css/all-min.css': ['statics/css/all.css']
                }
            }
        }

    });


    // load all grunt tasks
    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-develop');
    grunt.loadNpmTasks('grunt-sass');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-cssmin');
    grunt.loadNpmTasks('grunt-contrib-compress');

    // register a few tasks
    grunt.registerTask('build', ['sass:all', 'uglify:clientSideJs', 'cssmin:minifyCss']);
    grunt.registerTask('start-dev', ['develop:server', 'sass:all', 'watch:sources']);
    //grunt.registerTask('start-real', ???);

};