Gruntfile.js

module.exports = function (grunt) {
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    less: {
      development: {
        options: {
          paths: ['styles/']
        },
        files: {
          'styles/css/main.css': 'styles/less/main.less',
          'styles/css/default-theme.css': 'styles/less/default-theme.less',
          'styles/css/clutterboard-theme.css': 'styles/less/clutterboard-theme.less'
        }
      }
    },

    cssmin: {
      options: {
        shorthandCompacting: false,
        roundingPrecision: -1
      },
      target: {
        files: {
          'dist/mtr-datepicker.min.css': ['styles/css/main.css'],
          'dist/mtr-datepicker.default-theme.min.css': ['styles/css/default-theme.css'],
          'dist/mtr-datepicker.clutterboard-theme.min.css': ['styles/css/clutterboard-theme.css']
        }
      }
    },

    uglify: {
      options: {
        beautify: true
      },
      lib_target: {
        files: {
          'dist/mtr-datepicker.min.js': ['scripts/mtr-datepicker.js']
        }
      },
      timezones_target: {
        files: {
          'dist/mtr-datepicker-timezones.min.js': ['scripts/mtr-datepicker-timezones.js']
        }
      }
    },

    // Append a timestamp to JS and CSS files which are located in 'index.html'
    cachebreaker: {
      dev: {
        options: {
          match: [
            // CSS
            'dist/mtr-datepicker.min.css',
            'dist/mtr-datepicker.default-theme.min.css',

            // JS
            'dist/mtr-datepicker.min.js'
          ]
        },
        files: {
          src: ['index.html']
        }
      }
    },

    jsdoc: {
      dist: {
        src: ['scripts/*.js'],
        options: {
          destination: 'docs'
        }
      }
    },

    jshint: {
      all: ['scripts/*.js', 'test/spec/**/*.js']
    },

    watch: {
      options: {
        livereload: true
      },
      less: {
        options: {
          livereload: false
        },
        files: ['styles/less/*.less', 'scripts/*.js'],
        tasks: ['less', 'cssmin', 'uglify', 'notify:watch', 'cachebreaker', 'jsdoc']
      }
    },

    connect: {
      server: {
        options: {
          port: 4200,
          hostname: '*'
        }
      }
    },

    coveralls: {
      // Options relevant to all targets
      options: {
        // When true, grunt-coveralls will only print a warning rather than
        // an error, to prevent CI builds from failing unnecessarily (e.g. if
        // coveralls.io is down). Optional, defaults to false.
        force: false
      },

      your_target: {
        // LCOV coverage file (can be string, glob or array)
        src: 'tests/coverage/lcov.info',
        options: {
          // Any options for just this target
        }
      }
    },

    notify_hooks: {
      options: {
        enabled: true,
        max_jshint_notifications: 5, // maximum number of notifications from jshint output
        title: 'MTR Datepicker', // defaults to the name in package.json, or will use project directory's name
        success: false, // whether successful grunt executions should be notified automatically
        duration: 1 // the duration of notification in seconds, for `notify-send only
      }
    },

    notify: {
      watch: {
        options: {
          title: 'Watch Detected',
          message: 'LESS and minification finished.'
        }
      }
    }

  });

  grunt.loadNpmTasks('grunt-jsdoc');
  grunt.loadNpmTasks('grunt-contrib-less');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-contrib-cssmin');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-connect');
  grunt.loadNpmTasks('grunt-cache-breaker');
  grunt.loadNpmTasks('grunt-notify');
  grunt.loadNpmTasks('grunt-karma-coveralls');
  grunt.loadNpmTasks('grunt-coveralls');
  grunt.loadNpmTasks('grunt-contrib-jshint');
  grunt.loadNpmTasks('grunt-contrib-copy');

  grunt.task.run('notify_hooks');

  grunt.registerTask('default', ['less', 'cssmin', 'uglify', 'cachebreaker', 'jsdoc', 'connect', 'watch']);
  grunt.registerTask('coverage', ['coveralls:your_target']);
};