title: Uglify JS Unexpected token operator <<->>, expected punc <<: >>
body: <p>When i try to uglify and concat using Grunt uglify js in the follwing line ,</p>
  
  <p><b>ember-data: 'ember'</b></p>
  
  <p>uglification fails. How to let uglifyjs skip checking for &lt;&lt;->>?</p>
  
  <p>grunt config : </p>
  
  <pre><code>module.exports = function(grunt){
  grunt.initConfig({
      pkg : grunt.file.readJSON('package.json'),
      concat : {
          options : {
              seperator :  ';'
          },
          dist : {
              src : ['js/*.js'],
              dest : 'output.min.js'
          }
      },
      uglify : {
          options : {
              banner : '/*! &lt;%=grunt.template.today("dd-mm-yyyy")%&gt; */\n'
          },
          dist : {
              files : {
                  'dist/output.min.js' : ['&lt;%= concat.dist.dest%&gt;']
              }
          }
      },
  
  
  });
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-concat');
  
  grunt.registerTask('default', ['concat', 'uglify']);
  </code></pre>
  
  <p>}</p>
  
  <p>and my config.js is </p>
  
  <pre><code>require.config({
  baseUrl: 'js',
  shim: {
      ember: {
          deps: ['handlebars', 'jquery'],
          exports: 'Ember'
      },
      ember-data: 'ember',
      bootstrap: 'jquery',
      handlebars: ['Handlebars']
  },
  paths: {
      'App': '\js\application\app',
      'models': '',
      'views': '',
      'controllers': '',
      'templates': '',
  
      /*LIBRARIES*/
      'jquery': '\libs\jquery\jquery',
      'handlebars': '\libs\handlebars\handebars-1.1.2',
      'ember': '\libs\ember\ember-1.2.0',
      'ember-data' : '\libs\ember\ember-data'
      'bootstrap': '\libs\bootstrap\bootstrap.min.js',
  
      /*REQUIRE JS PLUGINS*/
      'text': '\libs\require\require plugins\text',
      'hbs': '\libs\require\require plugins\hbs',
      'domReady': '\libs\require\require plugins\domReady'
  },
  hbs: {
      disableI18n: true,
      templateExtension: 'hbs'
  },
  
  'App',
  'store',
  'router'    
  </code></pre>
  
  <p>});</p>
  
  <p>Thanks </p>