gistfile1.js

grunt.initConfig({
  pkg: grunt.file.readJSON('package.json'),
  widgetPath: 'public/static/components',
  relativeCoffeePath: '**/javascripts/**',
  coffee: {
    compile: {
      files: [
        {
          expand: true,
          cwd: '<%= widgetPath %>',
          src: '<%= relativeCoffeePath %>/*.js.coffee',
          dest: '<%= widgetPath %>',
          ext: '.js',
          rename: function(dest, src){
            return dest + src
          }
        }
      ]
    },
    concat: {
      dist: {
        files: [
          {
            expand: true,
            cwd: '<%= widgetPath %>',
            src: '<%= relativeCoffeePath %>/*.js',
            dest: '<%= widgetPath %>',
            ext: '.js',
            rename: function(dest, src){
              // Split the src into an array of path components
              srcComponents = src.split("/")

              // Cut out the second to last one
              srcComponents.splice(srcComponents.length - 2, 1)

              // Join the path components back together into a path
              newSrc = "/" + srcComponents.join("/")

              return dest + newSrc
            }
          }
        ]
      }
    }
  },