Grunt: How to build the files object dynamically

Question

I must be missing something very simple here. I\'m trying to write a function task that deals with files. The Grunt API docs mention that you can [Build the files object dynamic

Answer 1

You can use rename function to change file name is files object like below...

build: {
  files: [{
    expand: true,
    cwd: 'src',
    src: ['**/*.js'],
    dest: 'dist',
    rename: function(dest, src) {
      /* 
         rename logic
         you will have access to src and dest name and can return desirect name from this function.
      */
      return src+123;
    }
 }]
}