Gruntfile.js

module.exports = function(grunt) {

  var jsFiles = ['Gruntfile.js'],
      cssFiles = [],
      fs = require('fs');

  (function buildJSFileList(jsFiles) {
    var loadBundle = function(bundle) {
      var i = bundle.length,
              fileInfo,
              filePath;

      while (i--) {
        fileInfo = bundle[i];
        filePath = typeof fileInfo == 'object' ? fileInfo.path : fileInfo;
        if (/\.js$/.test(filePath))
          jsFiles.push('js/' + filePath);
        else if (/\.css$/.test(filePath)) {
          if (/\.min\.css$/.test(filePath))
            continue;

          var path = 'js/' + filePath,
              minPath = path.replace('.css', '.min.css'),
              mtime = fs.lstatSync(path).mtime.getTime(),
              minStats = fs.existsSync(minPath) && fs.lstatSync(minPath);

          if (!minStats || mtime > minStats.mtime.getTime()) {
            cssFiles.push(path);
            if (/leaflet/.test(filePath))
              console.log("minifying: " + path);
          }
          //else
          //  console.log("not minifying: " + path, "unmodified");
        }
      }
    };

    var bundles = grunt.file.readJSON('bundles.json');
    for (var name in bundles) {
      var bundle = bundles[name];
      if (name == 'widgetsFramework') {
        for (var fName in bundle) {
          loadBundle(bundle[fName]);
        }
      }
      else
        loadBundle(bundle);
    }
  })(jsFiles);

  grunt.initConfig({
    jshint: {
      files: jsFiles,
      options: {
        // options here to override JSHint defaults
        globals: {
          jQuery: true,
          console: true,
          module: true,
          document: true,
          '_': true
        },
        asi: true,
        boss: true,
        funcscope: true,
        loopfunc: true,
        eqnull: true,
        evil: true,
        debug: true,
        smarttabs: true,
        "-W099": true,
        "-W092": true,
        "-W032": true,
        "-W041": true,
        expr: true,
        shadow: true,
        supernew: true,
        sub: true,
        laxcomma: true,
        laxbreak: true
      }
    },
    uglify: {
      compress: {
        expand: true,
        src: jsFiles,
        dest: 'test/',
        ext: '.min.js',
        flatten: false,
        mangle: true
      }
    },
    cssmin: {
      minify: {
        expand: true,
        src: cssFiles,
        ext: '.min.css'
      }
    }
  });

//  grunt.loadNpmTasks('grunt-contrib-jshint');
//  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-cssmin');
//  grunt.loadNpmTasks('grunt-contrib-concat');

  grunt.task.registerTask('default', [/*'jshint', 'uglify',*/ 'cssmin']);
};
/*
    bower: {
      dev: {
        dest: 'js/lib'
      }
    },

    bowerInstall: {
      install: {
        options: {
          targetDir: './js/lib',
        }
         //just run 'grunt bower:install' and you'll see files from your Bower packages in lib directory
      }
    },
  grunt.loadNpmTasks('grunt-bower-task');

  grunt.renameTask("bower", "bowerInstall");

  grunt.loadNpmTasks('grunt-bower');
*/