for zurb_foundation theme in drupal

Gruntfile.js

module.exports = function(grunt) {
  "use strict";

  var theme_name = 'f5';

  var global_vars = {
    theme_name: theme_name,
    theme_css: 'css',
    theme_scss: 'scss'
  }

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

    sass: {
      options: {
        outputStyle: 'compressed',
        sourceMap: true,
        includePaths: ['<%= global_vars.theme_scss %>', '<%= global_vars.theme_scss %>/vendor', require('node-bourbon').includePaths]
      },
      dist: {
        files: {
          '<%= global_vars.theme_css %>/<%= global_vars.theme_name %>.css': '<%= global_vars.theme_scss %>/<%= global_vars.theme_name %>.scss'
        }
      },
      dist_custom: {
        files: grunt.file.expandMapping(['scss/extra/*.scss'], 'css/', {
          rename: function (dest, matched) {
              return matched.replace(/scss/g, 'css');
          }
        })
      }
    },

    copy: {
      dist: {
        files: [
          {
            expand:true,
            cwd: 'bower_components/foundation/js',
            src: ['foundation/*.js'], dest: 'js/', filter: 'isFile'
          },
          {
            expand:true,
            cwd: 'bower_components/foundation/',
            src: ['foundation.min.js'],
            dest: 'js/',
            filter: 'isFile'
          },
          {
            expand:true,
            cwd: 'bower_components/foundation/js/vendor',
            src: ['*.js'],
            dest: 'js/vendor',
            filter: 'isFile'
          },
          {
            expand:true,
            cwd: 'bower_components/foundation/scss/foundation',
            src: ['**/*.scss'],
            dest: 'scss/vendor/foundation',
            filter: 'isFile'
          },
          {
            expand:true,
            cwd: 'bower_components/foundation/scss',
            src: ['*.scss'],
            dest: 'scss/vendor/foundation',
            filter: 'isFile'
          }
        ]
      }
    },

    watch: {
      grunt: { files: ['Gruntfile.js'] },

      sass: {
        files: '<%= global_vars.theme_scss %>/**/*.scss',
        tasks: ['sass'],
        options: {
          livereload: true
        }
      }
    },

    sass_globbing: {
      foundation: {
        files: {
          'scss/extra/_importMap.scss': 'scss/vendor/foundation/components/*.scss',
        }
      }
    },

    clean: {
      js: [
        "scss/vendor/foundation/**/*.scss",
        "!scss/vendor/foundation/_variables.scss",
        "js/vendor/*"
        ]
    }
  });

  grunt.loadNpmTasks('grunt-sass');
  grunt.loadNpmTasks('grunt-contrib-copy');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-sass-globbing');
  grunt.loadNpmTasks('grunt-contrib-clean');

  grunt.registerTask('erase', ['clean']);
  grunt.registerTask('assemble', ['sass_globbing']);
  grunt.registerTask('build', ['erase', 'copy', 'sass_globbing', 'sass']);
  grunt.registerTask('default', ['build', 'watch']);
}