Gruntfile.js

module.exports = function(grunt) {

  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    concat: {
      options: {
        separator: ';'
      },
      dist: {
        src: ['public/**/*.js'],
        dest: 'dist/<%= pkg.name %>.js'
      }
    },
    uglify: {
      options: {
        banner: '/*! <%= pkg.name %> <%= grunt.template.today("dd-mm-yyyy") %> */\n'
      },
      dist: {
        files: {
          'dist/<%= pkg.name %>.min.js': ['<%= concat.dist.dest %>']
        }
      }
    },
    useminPrepare: {
      html: 'public/**/*.html'
    },
    usemin: {
      html: ['dist/{,*/}*.html'],
      css: ['dist/styles/{,*/}*.css'],
      js: ['dist/js/{,*/}*.js'],
      options: {
        assetsDirs: [
          'dist',
          'dist/images',
          'dist/styles'
        ],
        patterns: {
          js: [[/(images\/[^''""]*\.(png|jpg|jpeg|gif|webp|svg))/g, 'Replacing references to images']]
        }
      }
    },
    filerev: {
      dist: {
        src: [
          'dist/**/*.js',
        ]
      }
    },
    copy: {
      dist: {
        files: [{
          expand: true,
          dot: true,
          cwd: 'public',
          dest: 'dist',
          src: [
            '*.html',
            'images/**/*',
            'styles/**/*.css',
            'fonts/**/*'
          ]
        }]
      }
    },
  });

  grunt.loadNpmTasks('grunt-contrib-copy');
  grunt.loadNpmTasks('grunt-contrib-concat');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-cssmin');
  grunt.loadNpmTasks('grunt-filerev');
  grunt.loadNpmTasks('grunt-usemin');

  grunt.registerTask('default', [
    'useminPrepare',
    'concat:generated',
    //'cssmin:generated',
    'uglify:generated',
    'filerev',
    'copy',
    'usemin'
  ]);

};