Gruntfile.js

module.exports = function(grunt) {
  grunt.loadNpmTasks('grunt-contrib-copy');
  grunt.loadNpmTasks('grunt-contrib-clean');
  grunt.loadNpmTasks('grunt-contrib-less');
  grunt.loadNpmTasks('grunt-contrib-concat');
  grunt.loadNpmTasks('grunt-contrib-cssmin');
  grunt.loadNpmTasks('grunt-contrib-sass');
  grunt.loadNpmTasks('grunt-contrib-coffee');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-angular-templates');


  grunt.initConfig({
    copy: {
      bootstrap_fonts: {
        cwd: 'vendor/assets/components/bootstrap/fonts',
        src: '*',
        dest: 'public/assets/fonts',
        expand: true
      },
      angular: {
        files: {
          'tmp/build/javascripts/frameworks/angular.min.js': 'vendor/assets/components/angular/angular.min.js'
        }
      }
    },

    clean: {
      build: {
        src: [ 'tmp/build' ]
      },
      public_assets: {
        src: 'public/assets'
      }
    },

    less: {
      bootstrap: {
        options: {
          paths:  [ 'vendor/assets/components/bootstrap/less', 'app/assets/stylesheets/bootstrap' ]
        },
        files: {
          'tmp/build/stylesheets/frameworks/custom-bootstrap.css': 'app/assets/stylesheets/bootstrap/custom-bootstrap.less'
        }
      }
    },

    concat: {
      frameworks: {
        files: [
          {
            src: 'tmp/build/stylesheets/frameworks/**/*',
            dest: 'tmp/build/stylesheets/frameworks.css'
          },
          {
            src: 'tmp/build/javascripts/frameworks/**/*',
            dest: 'tmp/build/javascripts/frameworks.js'
          }
        ]
      }
    },

    cssmin: {
      frameworks: {
        files: {
          'public/assets/stylesheets/frameworks.min.css': 'tmp/build/stylesheets/*.css'
        }
      }
    },

    uglify: {
      frameworks: {
        files: {
          'public/assets/javascripts/frameworks.min.js': 'tmp/build/javascripts/*.js'
        }
      }
    },

    sass: {
      development: {
        options: {
          style: 'expanded',
          loadPath: 'app/assets/stylesheets/**/*.scss'
        },
        files: {
          'public/assets/stylesheets/application.css': 'app/assets/stylesheets/application.scss'
        }
      }
    },

    coffee: {
      development: {
        files: {
          'public/assets/javascripts/application.js': 'app/assets/javascripts/**/*.coffee'
        }
      }
    },

    watch: {
      scss: {
        options: { livereload: true },
        files: [ 'app/assets/stylesheets/**/*.scss' ],
        tasks: [ 'sass:development' ]
      },
      coffee: {
        options: { livereload: true },
        files: [ 'app/assets/javascripts/**/*.coffee' ],
        tasks: [ 'coffee:development' ]
      },
      templates: {
        options: { livereload: true },
        files: [ 'app/assets/templates/**/*.html' ],
        tasks: [ 'ngtemplates' ]
      }
    },

    ngtemplates: {
      default: {
        options: {
          module: 'templates',
          standalone: true,
          htmlmin: {
            collapseBooleanAttributes:      true,
            collapseWhitespace:             true,
            removeAttributeQuotes:          true,
            removeComments:                 true, // Only if you don't use comment directives!
            removeEmptyAttributes:          true,
            removeRedundantAttributes:      true,
            removeScriptTypeAttributes:     true,
            removeStyleLinkTypeAttributes:  true
          }
        },
        cwd: 'app/assets/templates',
        src: '**/*.html',
        dest: 'public/assets/javascripts/templates.js'
      }
    }
  })


  grunt.registerTask('package-frameworks', [
    'less:bootstrap',
    'copy:angular',
    'concat:frameworks',
    'cssmin:frameworks',
    'uglify:frameworks',
    'copy:bootstrap_fonts'
  ]);

  grunt.registerTask('start-development-session', [
    'clean:build',
    'clean:public_assets',
    'package-frameworks',
    'sass:development',
    'coffee:development',
    'ngtemplates',
    'watch'
  ]);
}