old_contents: module.exports = function(grunt) {
  
    grunt.initConfig({
      pkg: grunt.file.readJSON('package.json'),
  
      watch: {
        options: {
          livereload: true
        },
        less: {
          files: [
            'src/styles/*.less'
          ],
          tasks: ['less:assets']
        },
        all: {
          files: [
            'src/*.js',
            'src/main.css'
          ],
          tasks: ['browserify']
        },
        html : {
          files: ["index.html"]
        }
      },
  
      less: {
        options: {
          compress: true
        },
        assets: {
          files: {
            'src/main.css': 'src/styles/main.less'
          }
        }
      },
  
      browserify: {
        all: {
          files: {
            'bundle.js': ['src/*.js'],
          },
        }
      },
  
      connect: {
        server: {
          options: {
            port: 9000,
          }
        }
      }
    });
  
    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-browserify');
    grunt.loadNpmTasks('grunt-contrib-connect');
  
    grunt.registerTask('default', ["less", "browserify", "connect", "watch"]);
  
  };
  
new_contents: module.exports = function(grunt) {
  
    grunt.initConfig({
      pkg: grunt.file.readJSON('package.json'),
  
      watch: {
        options: {
          livereload: true
        },
        less: {
          files: [
            'src/styles/*.less'
          ],
          tasks: ['less:assets']
        },
        all: {
          files: [
            'src/*.js',
            'src/main.css'
          ],
          tasks: ['browserify']
        },
        html : {
          files: ["index.html"]
        }
      },
  
      less: {
        options: {
          compress: true
        },
        assets: {
          files: {
            'src/main.css': 'src/styles/main.less'
          }
        }
      },
  
      browserify: {
        all: {
          files: {
            'bundle.js': ['src/*.js'],
          },
        },
        options : {
          "bundleOptions" : {
            "debug": true
          }
        }
      },
  
      connect: {
        server: {
          options: {
            port: 9000,
          }
        }
      }
    });
  
    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-browserify');
    grunt.loadNpmTasks('grunt-contrib-connect');
  
    grunt.registerTask('default', ["less", "browserify", "connect", "watch"]);
  
  };
  
subject: add debug option to gruntfile