Gruntfile.js

module.exports = function (grunt) {
    const sass = require('node-sass');

    // Project configuration.
    grunt.initConfig({
        copy: {
            cssAsScss: {
                files: [
                    {
                        expand: true,
                        cwd: 'powa/static/',
                        src: ['bower_components/**/*.css', 'libs/**/*.css', '!**/*.min.css'],
                        dest: 'powa/static/',
                        filter: 'isFile',
                        ext: ".scss"
                    }
                ]
            },
            requirejs: {
                files: [
                    {
                        cwd: 'powa:static/',
                        src: ['bower_components/requirejs/require.js'],
                        dest: ['powa/static/js/'],
                        filter: 'isFile'
                    }
                ]
            }
        },
        requirejs: {
            all: {
                options: {
                    baseUrl: "./powa/static/js",
                    wrap: true,
                    name: "powa/main",
                    optimize: "none",
                    preserveLicenseComments: false,
                    generateSourceMaps: false,
                    mainConfigFile: "./powa/static/js/config.js",
                    out: "powa/static/js/powa.js",
                }
            }
        },
        sass: {
            options: {
                implementation: sass
            },
            all: {
                files: {
                    'powa/static/css/powa-all.min.css': 'powa/static/scss/powa.scss'
                }
            }
        },
        uglify: {
            options: {
                compress: false,
                mangle: {
                    reserved: ['$super']
                }
            },
            all: {
                files: {
                    'powa/static/js/powa.min-all.js': ['powa/static/js/powa.js']
                }
            }
        },
        bowerRequirejs: {
            all: {
                options: {
                    baseUrl: "",
                    excludeDev: true,
                    transitive: true
                }
            },
            target: {
                rjsConfig: 'powa/static/js/config.js'
            }
        },
        clean: ['powa/static/js/powa.js']
    });


    // Load the plugin that provides the "uglify" task.

    // Default task(s).
    grunt.loadNpmTasks('grunt-contrib-clean');
    grunt.loadNpmTasks('grunt-bower-requirejs');
    grunt.loadNpmTasks('grunt-contrib-copy');
    grunt.loadNpmTasks('grunt-contrib-requirejs');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-sass');

    grunt.registerTask('default', ['bowerRequirejs', 'copy', 'sass']);
    grunt.registerTask('dist', ['bowerRequirejs', 'copy', 'requirejs', 'uglify', 'sass', 'clean']);

};