复制文件后，GruntJS可以删除bower_components文件夹吗？

Question

I am using Bower and GruntJS. I thought that grunt-bowercopy would remove the bower_components folder when it is done but this is not happening.

Can grunt-bowercopy remove the bower_components folder after copying the files to the locations I want?

Here is my folder setup:

->Project
    ->Themes
        ->Theme
            ->assets
                ->scripts
                ->styles
    ->tools
        ->build
            ->bower_components
            ->bower.json
            ->gruntfile.js
            ->package.json

Here is how I am running grunt-bowercopy in my gruntfile.js

module.exports = function (grunt) {

// Loads the necessary tasks for this Grunt file.
    require('matchdep').filterDev('grunt-*').forEach(grunt.loadNpmTasks);

    // Project configuration.
    grunt.initConfig({

        pkg: grunt.file.readJSON('package.json'),

        bowercopy: {
          options: {
            clear: true
          },
          js: {
            options: {
                destPrefix: '../../Themes/Theme/assets/'
            },
            //The key is the destination file.  The value is the file from the bower_components folder
            //The files will be added to a scripts folder at the location: ../../themes/3MTheme/assets/scripts
            //The key is the name of the folder that is copied into the /assets folder.
            src : 'scripts'

          },
          css: {
            options: {
                destPrefix: '../../Themes/Theme/assets/'
            },
            src: 'styles'

          }
       }

      // Custom task, executed via the command "grunt bowercopy"
      grunt.registerTask('bower', ['bowercopy']);
};    

Answer 1

It doesn't seem as if grunt-bowercopy does this for you, but I've done something similar for clearing reports before running test commands.

Just create your own custom task called something like cleanbowercopy which executes an rmdir on the directory you are cleaning.

Then update your register task to call it after bowercopy:

grunt.registerTask('bower',['bowercopy','cleanbowercopy']);

That way it will accomplish what you are seeking within the same command, and can even be reused if you'd rather clean the dir at a different point in time.

Answer 2

I found the asnswer. I was using clear: true in the options when it should be clean: true

This works in my gruntfile.js

module.exports = function (grunt) {

// Loads the necessary tasks for this Grunt file.
require('matchdep').filterDev('grunt-*').forEach(grunt.loadNpmTasks);

// Project configuration.
grunt.initConfig({

    pkg: grunt.file.readJSON('package.json'),

    bowercopy: {
      options: {
        clean: true
      },
      js: {
        options: {
            destPrefix: '../../Themes/Theme/assets/'
        },
        //The key is the destination file.  The value is the file from the bower_components folder
        //The files will be added to a scripts folder at the location: ../../themes/3MTheme/assets/scripts
        //The key is the name of the folder that is copied into the /assets folder.
        src : 'scripts'

      },
      css: {
        options: {
            destPrefix: '../../Themes/Theme/assets/'
        },
        src: 'styles'

      }
   }

  // Custom task, executed via the command "grunt bowercopy"
  grunt.registerTask('bower', ['bowercopy']);
};