grunt. How to copy folders using the copy task?

Question

JavaScript

I use this task: https://github.com/gruntjs/grunt-contrib-copy
I pulled bootstrap to myself and I want to copy these folders to myself:

/bower_components/bootstrap/dist
/bower_components/bootstrap/fonts
/bower_components/bootstrap/js
/bower_components/bootstrap/less

Wrote the following problem:

{expand: true, flatten: true, src: [
  'bower_components/bootstrap/dist/*',
  'bower_components/bootstrap/fonts/*',
  'bower_components/bootstrap/js/*',
  'bower_components/bootstrap/less/*'
], dest: 'src/vendor/bootstrap/', filter: 'isFile'},

There was a problem, all files from these folders fly to src/vendor/bootstrap/ forming a dump.
If flatten is set to false, then this will fly:

src/vendor/bootstrap/bower_components/bootstrap/fonts
src/vendor/bootstrap/bower_components/bootstrap/js
src/vendor/bootstrap/bower_components/bootstrap/less

Ie extra nesting: bower_components/bootstrap/
In the course of inattention or not knowing English. language, I can not find in the docks what is the problem. How can I copy folders from one directory to another without unnecessary nesting?

Answer 1

{
     expand: true,
     cwd: 'bower_components/bootstrap',
     src: '**/*',
     dest: 'src/vendor/bootstrap/',
     filter: 'isFile'
  },

In general, all the salt in cwd

Answer 2

Why even copy them? Write paths to bower_components and work. In any case, libraries are connected through bower to which it is not recommended to make changes.