Gruntfile.js

'use strict';

var request = require('request');

module.exports = function (grunt) {
  // show elapsed time at the end
  require('time-grunt')(grunt);
  // load all grunt tasks
  require('load-grunt-tasks')(grunt);

  var reloadPort = 35729, files;

  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    develop: {
      server: {
        file: 'server.js'
      }
    },
    sass: {
      dist: {
        files: {
          'public/css/style.css': 'public/css/style.scss'
        }
      }
    },
    watch: {
      options: {
        nospawn: true,
        livereload: reloadPort
      },
      js: {
        files: [
          'app.js',
          'server.js',
          'app/**/*.js',
          'config/*.js'
        ],
        tasks: ['develop', 'delayed-livereload']
      },
      css: {
        files: [
          'public/css/*.scss'
        ],
        tasks: ['sass'],
        options: {
          livereload: reloadPort
        }
      },
      concat_app: {
        files: "public/js/apps/*.js",
        tasks: "concat:app"
      },
      views: {
        files: [
          'app/views/*.handlebars',
          'app/views/**/*.handlebars'
        ],
        options: { livereload: reloadPort }
      }
    },
    concat: {
      vendor: {
        src: [
          "public/components/jquery/dist/jquery.js",
          "public/components/clipboard/dist/clipboard.min.js"
        ],
        dest: "public/js/vendors.js"
      },
      app: {
        src: "public/js/apps/main.js",
        dest: "public/js/app.js"
      }
    },
    uglify: {
      vendors: {
        files: {
          'public/js/vendors.min.js': 'public/js/vendors.js'
        }
      },
      app: {
        files: {
          'public/js/app.min.js': 'public/js/app.js'
        }
      }
    },
  });

  grunt.config.requires('watch.js.files');
  files = grunt.config('watch.js.files');
  files = grunt.file.expand(files);

  grunt.loadNpmTasks("grunt-contrib-concat");
  grunt.loadNpmTasks('grunt-contrib-uglify');

  grunt.registerTask('delayed-livereload', 'Live reload after the node server has restarted.', function () {
    var done = this.async();
    setTimeout(function () {
      request.get('http://localhost:' + reloadPort + '/changed?files=' + files.join(','),  function(err, res) {
          var reloaded = !err && res.statusCode === 200;
          if (reloaded)
            grunt.log.ok('Delayed live reload successful.');
          else
            grunt.log.error('Unable to make a delayed live reload.');
          done(reloaded);
        });
    }, 500);
  });

  grunt.registerTask('default', [
    'sass',
    'develop',
    'watch',
    'concat'
  ]);

  grunt.registerTask('build', [
    'concat:vendor',
    'uglify'
  ]);
};