使用grunt（yeoman）在浏览器中实时编辑Sass

无法理解为什么scss文件未显示在浏览器中 你能给我一些建议吗？ 我应该使用不同的工具吗

我在命令行中执行以下

grunt-service

我的Grunfile.js

// Generated on 2015-02-19 using
// generator-webapp 0.5.1
'use strict';

// # Globbing
// for performance reasons we're only matching one level down:
// 'test/spec/{,*/}*.js'
// If you want to recursively match all subfolders, use:
// 'test/spec/**/*.js'

module.exports = function (grunt) {

  // Time how long tasks take. Can help when optimizing build times
  require('time-grunt')(grunt);

  // Load grunt tasks automatically
  require('load-grunt-tasks')(grunt);

  // Configurable paths
  var config = {
    app: 'app',
    dist: 'dist'
  };

  // Define the configuration for all the tasks
  grunt.initConfig({

    // Project settings
    config: config,

    // Watches files for changes and runs tasks based on the changed files
    watch: {
      bower: {
        files: ['bower.json'],
        tasks: ['wiredep']
      },
      js: {
        files: ['<%= config.app %>/scripts/{,*/}*.js'],
        tasks: ['jshint'],
        options: {
          livereload: true
        }
      },
      jstest: {
        files: ['test/spec/{,*/}*.js'],
        tasks: ['test:watch']
      },
      gruntfile: {
        files: ['Gruntfile.js']
      },
      sass: {
        files: ['<%= config.app %>/styles/{,*/}*.{scss,sass}'],
        tasks: ['sass:server', 'autoprefixer']
      },
      styles: {
        files: ['<%= config.app %>/styles/{,*/}*.css'],
        tasks: ['newer:copy:styles', 'autoprefixer']
      },
      livereload: {
        options: {
          livereload: '<%= connect.options.livereload %>'
        },
        files: [
          '<%= config.app %>/{,*/}*.html',
          '.tmp/styles/{,*/}*.css',
          '<%= config.app %>/images/{,*/}*'
        ]
      }
    },

    // The actual grunt server settings
    connect: {
      options: {
        port: 9000,
        open: true,
        livereload: 35729,
        // Change this to '0.0.0.0' to access the server from outside
        hostname: 'localhost'
      },
      livereload: {
        options: {
          middleware: function(connect) {
            return [
              connect.static('.tmp'),
              connect().use('/bower_components', connect.static('./bower_components')),
              connect.static(config.app)
            ];
          }
        }
      },
      test: {
        options: {
          open: false,
          port: 9001,
          middleware: function(connect) {
            return [
              connect.static('.tmp'),
              connect.static('test'),
              connect().use('/bower_components', connect.static('./bower_components')),
              connect.static(config.app)
            ];
          }
        }
      },
      dist: {
        options: {
          base: '<%= config.dist %>',
          livereload: false
        }
      }
    },

    // Empties folders to start fresh
    clean: {
      dist: {
        files: [{
          dot: true,
          src: [
            '.tmp',
            '<%= config.dist %>/*',
            '!<%= config.dist %>/.git*'
          ]
        }]
      },
      server: '.tmp'
    },

    // Make sure code styles are up to par and there are no obvious mistakes
    jshint: {
      options: {
        jshintrc: '.jshintrc',
        reporter: require('jshint-stylish')
      },
      all: [
        'Gruntfile.js',
        '<%= config.app %>/scripts/{,*/}*.js',
        '!<%= config.app %>/scripts/vendor/*',
        'test/spec/{,*/}*.js'
      ]
    },

    // Mocha testing framework configuration options
    mocha: {
      all: {
        options: {
          run: true,
          urls: ['http://<%= connect.test.options.hostname %>:<%= connect.test.options.port %>/index.html']
        }
      }
    },

    // Compiles Sass to CSS and generates necessary files if requested
    sass: {
         options: {
        sourceMap: true,
        includePaths: ['bower_components']
        },
      dist: {
        files: [{
          expand: true,
          cwd: '<%= config.app %>/styles',
          src: ['*.{scss,sass}'],
          dest: '.tmp/styles',
          ext: '.css'
        }]
      },
      server: {
        files: [{
          expand: true,
          cwd: '<%= config.app %>/styles',
          src: ['*.{scss,sass}'],
          dest: '.tmp/styles',
          ext: '.css'
        }]
      }
    },

    // Add vendor prefixed styles
    autoprefixer: {
      options: {
        browsers: ['> 1%', 'last 2 versions', 'Firefox ESR', 'Opera 12.1']
      },
      dist: {
        files: [{
          expand: true,
          cwd: '.tmp/styles/',
          src: '{,*/}*.css',
          dest: '.tmp/styles/'
        }]
      }
    },

    // Automatically inject Bower components into the HTML file
    wiredep: {
      app: {
        ignorePath: /^\/|\.\.\//,
        src: ['<%= config.app %>/index.html'],
        exclude: ['bower_components/bootstrap-sass-official/assets/javascripts/bootstrap.js']
      },
      sass: {
        src: ['<%= config.app %>/styles/{,*/}*.{scss,sass}'],
        ignorePath: /(\.\.\/){1,2}bower_components\//
      }
    },

    // Renames files for browser caching purposes
    rev: {
      dist: {
        files: {
          src: [
            '<%= config.dist %>/scripts/{,*/}*.js',
            '<%= config.dist %>/styles/{,*/}*.css',
            '<%= config.dist %>/images/{,*/}*.*',
            '<%= config.dist %>/styles/fonts/{,*/}*.*',
            '<%= config.dist %>/*.{ico,png}'
          ]
        }
      }
    },

    // Reads HTML for usemin blocks to enable smart builds that automatically
    // concat, minify and revision files. Creates configurations in memory so
    // additional tasks can operate on them
    useminPrepare: {
      options: {
        dest: '<%= config.dist %>'
      },
      html: '<%= config.app %>/index.html'
    },

    // Performs rewrites based on rev and the useminPrepare configuration
    usemin: {
      options: {
        assetsDirs: [
          '<%= config.dist %>',
          '<%= config.dist %>/images',
          '<%= config.dist %>/styles'
        ]
      },
      html: ['<%= config.dist %>/{,*/}*.html'],
      css: ['<%= config.dist %>/styles/{,*/}*.css']
    },

    // The following *-min tasks produce minified files in the dist folder
    imagemin: {
      dist: {
        files: [{
          expand: true,
          cwd: '<%= config.app %>/images',
          src: '{,*/}*.{gif,jpeg,jpg,png}',
          dest: '<%= config.dist %>/images'
        }]
      }
    },

    svgmin: {
      dist: {
        files: [{
          expand: true,
          cwd: '<%= config.app %>/images',
          src: '{,*/}*.svg',
          dest: '<%= config.dist %>/images'
        }]
      }
    },

    htmlmin: {
      dist: {
        options: {
          collapseBooleanAttributes: true,
          collapseWhitespace: true,
          conservativeCollapse: true,
          removeAttributeQuotes: true,
          removeCommentsFromCDATA: true,
          removeEmptyAttributes: true,
          removeOptionalTags: true,
          removeRedundantAttributes: true,
          useShortDoctype: true
        },
        files: [{
          expand: true,
          cwd: '<%= config.dist %>',
          src: '{,*/}*.html',
          dest: '<%= config.dist %>'
        }]
      }
    },

    // By default, your `index.html`'s <!-- Usemin block --> will take care
    // of minification. These next options are pre-configured if you do not
    // wish to use the Usemin blocks.
    // cssmin: {
    //   dist: {
    //     files: {
    //       '<%= config.dist %>/styles/main.css': [
    //         '.tmp/styles/{,*/}*.css',
    //         '<%= config.app %>/styles/{,*/}*.css'
    //       ]
    //     }
    //   }
    // },
    // uglify: {
    //   dist: {
    //     files: {
    //       '<%= config.dist %>/scripts/scripts.js': [
    //         '<%= config.dist %>/scripts/scripts.js'
    //       ]
    //     }
    //   }
    // },
    // concat: {
    //   dist: {}
    // },

    // Copies remaining files to places other tasks can use
    copy: {
      dist: {
        files: [{
          expand: true,
          dot: true,
          cwd: '<%= config.app %>',
          dest: '<%= config.dist %>',
          src: [
            '*.{ico,png,txt}',
            'images/{,*/}*.webp',
            '{,*/}*.html',
            'styles/fonts/{,*/}*.*'
          ]
        }, {
          src: 'node_modules/apache-server-configs/dist/.htaccess',
          dest: '<%= config.dist %>/.htaccess'
        }, {
          expand: true,
          dot: true,
          cwd: '.',
          src: 'bower_components/bootstrap-sass-official/assets/fonts/bootstrap/*',
          dest: '<%= config.dist %>'
        }]
      },
      styles: {
        expand: true,
        dot: true,
        cwd: '<%= config.app %>/styles',
        dest: '.tmp/styles/',
        src: '{,*/}*.css'
      }
    },

    // Generates a custom Modernizr build that includes only the tests you
    // reference in your app
    modernizr: {
      dist: {
        devFile: 'bower_components/modernizr/modernizr.js',
        outputFile: '<%= config.dist %>/scripts/vendor/modernizr.js',
        files: {
          src: [
            '<%= config.dist %>/scripts/{,*/}*.js',
            '<%= config.dist %>/styles/{,*/}*.css',
            '!<%= config.dist %>/scripts/vendor/*'
          ]
        },
        uglify: true
      }
    },

    // Run some tasks in parallel to speed up build process
    concurrent: {
      server: [
        'sass:server',
        'copy:styles'
      ],
      test: [
        'copy:styles'
      ],
      dist: [
        'sass',
        'copy:styles',
        'imagemin',
        'svgmin'
      ]
    }
  });


  grunt.registerTask('serve', 'start the server and preview your app, --allow-remote for remote access', function (target) {
    if (grunt.option('allow-remote')) {
      grunt.config.set('connect.options.hostname', '0.0.0.0');
    }
    if (target === 'dist') {
      return grunt.task.run(['build', 'connect:dist:keepalive']);
    }

    grunt.task.run([
      'clean:server',
      'wiredep',
      'concurrent:server',
      'autoprefixer',
      'connect:livereload',
      'watch'
    ]);
  });

  grunt.registerTask('server', function (target) {
    grunt.log.warn('The `server` task has been deprecated. Use `grunt serve` to start a server.');
    grunt.task.run([target ? ('serve:' + target) : 'serve']);
  });

  grunt.registerTask('test', function (target) {
    if (target !== 'watch') {
      grunt.task.run([
        'clean:server',
        'concurrent:test',
        'autoprefixer'
      ]);
    }

    grunt.task.run([
      'connect:test',
      'mocha'
    ]);
  });

  grunt.registerTask('build', [
    'clean:dist',
    'wiredep',
    'useminPrepare',
    'concurrent:dist',
    'autoprefixer',
    'concat',
    'cssmin',
    'uglify',
    'copy:dist',
    'modernizr',
    'rev',
    'usemin',
    'htmlmin'
  ]);

  grunt.registerTask('default', [
    'sass',
    'newer:jshint',
    'test',
    'build'
  ]);
};

//于2015-02-19使用
//生成器webapp 0.5.1
"严格使用",；
//#全球化
//出于性能原因，我们只降低了一个级别：
//'test/spec/{，*/}*.js'
//如果要递归匹配所有子文件夹，请使用：
//“test/spec/***.js”
module.exports=函数（grunt）{
//任务所需的时间。可以帮助优化构建时间
要求（“时间咕噜”）（咕噜）；
//自动加载grunt任务
要求（'load-grunt-tasks'）（grunt）；
//可配置路径
变量配置={
应用程序：“应用程序”，
dist:“dist”
};
//定义所有任务的配置
grunt.initConfig({
//项目设置
config:config，
//监视文件的更改，并基于更改的文件运行任务
观察：{
鲍尔：{
文件：['bower.json']，
任务：['wiredep']
},
js:{
文件：['/scripts/{，*/}*.js']，
任务：['jshint']，
选项：{
利弗雷罗德：没错
}
},
jstest：{
文件：['test/spec/{，*/}*.js']，
任务：[“测试：监视”]
},
Grunfile：{
文件：['grunfile.js']
},
sass：{
文件：['/styles/{，*/}*{scss，sass}']，
任务：['sass:server'，'autoprefixer']
},
风格：{
文件：['/styles/{，*/}*.css']，
任务：[“更新的：复制：样式”，“自动引用器”]
},
利弗雷罗德：{
选项：{
livereload:'
},
档案：[
'/{，*/}*.html'，
“.tmp/styles/{，*/}*.css”，
“/images/{，*/}*”
]
}
},
//实际的grunt服务器设置
连接：{
选项：{
港口：9000，
开放：是的，
利弗雷罗德：35729，
//将此更改为“0.0.0.0”以从外部访问服务器
主机名：“localhost”
},
利弗雷罗德：{
选项：{
中间件：功能（连接）{
返回[
connect.static（'.tmp'），
connect（）.使用（'/bower\u components'，connect.static（'/bower\u components'），
connect.static（config.app）
];
}
}
},
测试：{
选项：{
开：错，
港口：9001，
中间件：功能（连接）{
返回[
connect.static（'.tmp'），
connect.static（'test'），
connect（）.使用（'/bower\u components'，connect.static（'/bower\u components'），
connect.static（config.app）
];
}
}
},
地区：{
选项：{
基：“”，
利弗雷罗德：错
}
}
},
//清空文件夹以重新开始
清洁：{
地区：{
档案：[{
多特：没错，
src:[
“.tmp”，
'/*',
“！/.git*”
]
}]
},
服务器：'.tmp'
},
/确保代码风格达到标准，没有明显的错误。
jshint:{
选项：{
jshintrc:“.jshintrc”，
记者：require（'jshint-style'）
},
全部：[
“Gruntfile.js”，
“/scripts/{，*/}*.js”，
“！/scripts/vendor/*”，
'test/spec/{，*/}*.js'
]
},
//Mocha测试框架配置选项
摩卡咖啡：{
全部：{
选项：{
run：是的，
URL:['http://:/index.html']
}
}
},
//将Sass编译为CSS，并在需要时生成必要的文件
sass：{
选项：{
sourceMap:true，
includePaths:['bower_components']
},
地区：{
档案：[{
是的，
cwd:“/styles”，
src:['*.{scss，sass}']，
目标：'.tmp/styles'，
分机：'.css'
}]
},
服务器：{
档案：[{
是的，
cwd:“/styles”，
src:['*.{scss，sass}']，
目标：'.tmp/styles'，
分机：'.css'
}]
}
},
//添加供应商前缀样式
自动刷新器：{
选项：{
浏览器：['>1%，'last 2 versions'，'Firefox ESR'，'Opera 12.1']
},
地区：{
档案：[{
是的，
cwd:“.tmp/styles/”，
src:'{，*/}*.css',，
目标：'.tmp/styles/'
}]
}
},
//自动将Bower组件注入HTML文件
wiredep：{
应用程序：{
忽略路径：/^\/\.\.\/,，
src:['/index.html']，
排除：['bower_components/bootstrap sass official/assets/javascripts/bootstrap.js']
},
sass：{
src:['/styles/{，*/}*{scss，sass}']，
ignorePath:/（\.\.\/）{1,2}bower\u组件\//
}
},
//重命名文件以用于浏览器缓存
修订版：{
地区：{
档案：{
src:[
“/scripts/{，*/}*.js”，
“/styles/{，*/}*.css”，
“/images/{，*/}**”，
“/styles/fonts/{，*/}**”，
“/*.{ico，png}”
]
}
}
},
//读取usemin块的HTML以启用自动生成的智能构建
//压缩、缩小和修订文件。在内存中创建配置，以便
//其他任务可以对它们进行操作
使用准备：{
选项：{
目标：“”
},
html:“/index.html”
},
//根据rev和useminPrepare配置执行重写
usemin：{
选项：{
资产目录：[
'',
“/图像”，
“/风格”
]
},
html:['/{，*/}*.html']，
css:['/styles/{，*/}*.css']
},
//以下*-min任务在dist文件夹中生成缩小的文件
imagemin：{
地区：{
档案：[{
是的，
cwd:“/images”，
sr
  styles: {
    files: ['<%= config.app %>/styles/{,*/}*.css'],
    tasks: ['newer:copy:styles', 'autoprefixer']
  },