gruntjs - 如何从usemin任务中获取输出？

Question

我目前正在使用 usemin 任务来执行 concat 和 uglify 任务。但是，我没有从 concat/uglify 任务中获得任何输出。没有看到任何错误或警告。如何获得结果输出 dist/app/myscript.js 脚本？

Gruntfile.js 如下:

module.exports = function(grunt){
  var paths = {
    app: 'app',
    dist: 'dist'
  };

  grunt.initConfig({
    paths: paths,
    clean: {
      dist: {
        src: ['<%= paths.dist %>']
      }
    },
    copy: {
        dist: {
            files: [
                {expand: true, cwd: '.', src: ['**'], dest: '<%= paths.dist %>/'}
            ]
        }
    },
    useminPrepare: {
      html: '<%= paths.dist %>/<%= paths.app %>/index.html'
    },
    usemin: {
        html: '<%= paths.dist %>/<%= paths.app %>/index.html'
    }
  });

  grunt.loadNpmTasks('grunt-usemin');
  grunt.loadNpmTasks('grunt-contrib-cssmin');
  grunt.loadNpmTasks('grunt-contrib-copy');
  grunt.loadNpmTasks('grunt-contrib-clean');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.registerTask('default', ['clean','copy']);
  grunt.registerTask('use', ['useminPrepare','usemin'])
}

HTML 构建片段:

<!-- build:js myscript.js -->
<script type="text/javascript" src='router.js'></script>
<script type="text/javascript" src='bootstrap.js'></script>
<!-- endbuild -->

控制台输出:

Running "useminPrepare:html" (useminPrepare) task
Going through dist/app/index.html to update the config
Looking for build script HTML comment blocks

Found a block:
<!-- build:js myscript.js -->
<!-- Globals -->
<script type="text/javascript" src='router.js'></script>
<script type="text/javascript" src='bootstrap.js'></script>
<!-- endbuild -->
Updating config with the following assets:
    - dist/app/router.js
    - dist/app/bootstrap.js

Configuration is now:

  cssmin:
  {}

  concat:
  { 'dist/app/myscript.js': 
   [ 'dist/app/router.js',
     'dist/app/bootstrap.js' ] }

  uglify:
  { 'dist/app/myscript.js': 'dist/app/myscript.js' }

  requirejs:
  {}

Running "usemin:html" (usemin) task

Processing as HTML - dist/app/index.html
Update the HTML to reference our concat/min/revved script files
Update the HTML with the new css filenames
Update the HTML with the new img filenames
Update the HTML with data-main tags
Update the HTML with the data tags
Update the HTML with background imgs, case there is some inline style
Update the HTML with anchors images
Update the HTML with reference in input

Done, without errors.

Answer 1

事实证明问题出在 registerTask() 上。您需要显式添加 concat/uglify。所以它应该是这样的: grunt.registerTask('use', ['useminPrepare','usemin','concat','uglify'])