Gruntfile.js

module.exports = function (grunt) {
  'use strict';

  grunt.loadNpmTasks('grunt-contrib-jshint');
  grunt.loadNpmTasks('grunt-contrib-watch');
  // grunt.loadNpmTasks('grunt-exec');

  grunt.initConfig({
    jshint: {
      all: ['Gruntfile.js', 'src/**/*.js', '*.js'],
      options: {
        curly: true,
        immed: true,
        newcap: true,
        noarg: true,
        sub: true,
        boss: true,
        eqnull: true,
        esnext: true,
        node: true,
        reporter: require('jshint-stylish')
      },
      globals: {}
    },
    delta: {
      /**
       * By default, we want the Live Reload to work for all tasks; this is
       * overridden in some tasks (like this file) where browser resources are
       * unaffected. It runs by default on port 35729, which your browser
       * plugin should auto-detect.
       */
      options: {
        livereload: true
      },

      /**
       * When the Gruntfile changes, we just want to lint it. In fact, when
       * your Gruntfile changes, it will automatically be reloaded!
       */
      gruntfile: {
        files: 'Gruntfile.js',
        tasks: ['jshint:gruntfile'],
        options: {
          livereload: false
        }
      },

      /**
       * When our JavaScript source files change, we want to run lint them and
       * run our unit tests.
       */
      jssrc: {
        files: [
          ['*.js', './**/*.js']
        ],
        tasks: ['jshint']
      },
    }
  });



  /**
   * In order to make it safe to just compile or copy *only* what was changed,
   * we need to ensure we are starting from a clean, fresh build. So we rename
   * the `watch` task to `delta` (that's why the configuration var above is
   * `delta`) and then add a new task called `watch` that does a clean build
   * before watching for changes.
   */
  grunt.renameTask('watch', 'delta');

  grunt.registerTask('dev', ['jshint', 'delta']);
  grunt.registerTask('default', ['dev']);
};