title: Npm module "" not found. Is it installed?
body: <p>This is strange. Using this tutorial: <a href="https://ntdln.com/2017/07/25/using-javascript-modules/" rel="nofollow noreferrer">https://ntdln.com/2017/07/25/using-javascript-modules/</a> I tried to do get the modules thing in JS. I run <code>npm istall grunt-browserify --save-dev</code> along with the other packages. My package.json file is</p>
  
  <pre><code>{
    "name": "example",
    "version": "0.1.0",
    "devDependencies": {
      "babel-core": "^6.26.0",
      "babel-preset-es2015": "^6.24.1",
      "babelify": "^8.0.0",
      "browserify": "^14.5.0",
      "grunt": "^0.4.5",
      "grunt-autoprefixer": "^3.0.4",
      "grunt-contrib-imagemin": "^2.0.1",
      "grunt-contrib-sass": "^1.0.0",
      "grunt-contrib-uglify": "^3.0.1",
      "grunt-contrib-watch": "^1.0.0",
      "grunt-es6-transpiler": "^1.0.2",
      "grunt-typescript": "^0.8.0",
      "typescript": "^2.4.2"
    }
  }
  </code></pre>
  
  <p>So the packages are there. I tried removing my nodemodules folder and installing it with npm insatll, but it didn't help.</p>
  
  <p>My grunt.js file is this</p>
  
  <pre><code>module.exports = function (grunt) {
    // 1. All configuration goes here 
    grunt.initConfig({
      pkg: grunt.file.readJSON('package.json'),
      browserify: {
        build: {
          options: {
            browserifyOptions: {
              debug: false
            },
            transform: [
              [
                'babelify', {
                  'presets': [
                    [
                      'es2015', {
                        'loose': true
                      }
                    ]
                  ],
                  'comments': false,
                  'compact': true,
                  'minified': true
                }
              ]
            ]
          },
          src: [
            '_dev/js/app.js', 
          ],
          dest: './scripts/app.es5.min.js'
        }
      },
      // es6transpiler: {
      //   dist: {
      //     files: {
      //       '_dev/js/app.es5.js': '_dev/js/app.js'
      //     }
      //   }
      // },
      // uglify: {
      //   build: {
      //     src: "_dev/js/app.es5.js",
      //     dest: "scripts/app.es5.min.js"
      //   }
      // },
      sass: {
        dist: {
          options: {
            style: 'compressed'
          },
          files: {
            '_dev/css/app.min.css': '_dev/scss/app.scss'
          }
        }
      },
      autoprefixer: {
        dist: {
          files: {
            'content/app.prefixed.min.css': '_dev/css/app.min.css'
          }
        }
      },
      imagemin: {
        dynamic: {
          files: [{
            expand: true,
            cwd: '_dev/assets/images/',
            src: ['**/*.{png,jpg,gif}'],
            dest: 'assets/img/'
          }]
        }
      },
      watch: {
        scripts: {
          files: ['_dev/js/*.js'],
          tasks: ['browserify', 'uglify'],
          options: {
            spawn: false,
          }
        },
        css: {
          files: '_dev/scss/app.scss',
          tasks: ['sass', 'autoprefixer']
        }
      } //End watch
    });
  
    // 3. Where we tell Grunt we plan to use this plug-in.
    grunt.loadNpmTasks('grunt-contrib-sass');
    grunt.loadNpmTasks('grunt-contrib-imagemin');
    grunt.loadNpmTasks('grunt-autoprefixer');
    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('browserify');
    grunt.loadNpmTasks('babelify');
    grunt.loadNpmTasks('babel-preset-es2015');
    // grunt.loadNpmTasks('grunt-contrib-uglify');
    // grunt.loadNpmTasks('grunt-es6-transpiler');
    // grunt.loadNpmTasks('grunt-contrib-requirejs');
  
    // 4. Where we tell Grunt what to do when we type "grunt" into the terminal.
    grunt.registerTask(
      'default', [
        // 'es6transpiler',
        // 'uglify',
        'browserify',
        'babelify',
        'babel-preset-es2015',
        'sass',
        'autoprefixer',
        'imagemin',
        'watch'
      ]);
  
  };
  </code></pre>
  
  <p>Still all I'm getting after running grunt is:</p>
  
  <pre><code>&gt;&gt; Local Npm module "browserify" not found. Is it installed?
  &gt;&gt; Local Npm module "babelify" not found. Is it installed?
  &gt;&gt; Local Npm module "babel-preset-es2015" not found. Is it installed?
  </code></pre>