grunt cssminエラー：ディレクトリを作成できません

Question

私は以下のようにgruntfileを設定しました。コマンドプロンプトで "grunt"コマンドを実行すると、jshint、clean、concatタスクは正常に動作しますが、cssminタスクを実行するときには、次のエラーが出ます。言及する

もう一つは、私は私のシステムを再起動すると、エラーが受信されないとスムーズに作業敵の流れと望ましい結果を生成しています。 この問題の原因を1つ挙げることができます。ここで

は私gruntfile.js

'use strict'; 

    module.exports = function (grunt) { 

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

// Automatically load required Grunt tasks 
require('jit-grunt')(grunt, {useminPrepare: 'grunt-usemin'}); 

// Define the configuration for all the tasks 
grunt.initConfig({ 
pkg: grunt.file.readJSON('package.json'), 

// Make sure code styles are up to par and there are no obvious mistakes 
jshint: { 
    options: { 
    jshintrc: '.jshintrc', 
    reporter: require('jshint-stylish') 
    }, 

    all: { 
    src: [ 
     //The JSHint task is set to examine all the JavaScript files in the app/scripts folder, and the Gruntfile.js and generate any reports of JS errors or warnings. 
     'Gruntfile.js', 
     'app/scripts/{,*/}*.js' 
    ] 
    } 
}, 

copy: { 
    dist: { 
    cwd: 'app', 
    src: [ '**','!styles/**/*.css','!scripts/**/*.js' ], 
    dest: 'dist', 
    expand: true 
    }, 

    fonts: { 
    files: [ 
     { 
     //for bootstrap fonts 
     expand: true, 
     dot: true, 
     cwd: 'bower_components/bootstrap/dist', 
     src: ['fonts/*.*'], 
     dest: 'dist' 
     }, 
     { 
     //for font-awesome 
     expand: true, 
     dot: true, 
     cwd: 'bower_components/font-awesome', 
     src: ['fonts/*.*'], 
     dest: 'dist' 
     } 
    ] 
    } 
}, 

clean: { 
    build: { 
    src: [ 'dist/'] 
    } 
}, 

useminPrepare: { 
    html: 'app/menu.html', 
    options: { 
    dest: 'dist' 
    } 
}, 

// Concat 
concat: { 
    options: { 
    separator: ';' 
    }, 

    // dist configuration is provided by useminPrepare 
    dist: {} 
}, 

// Uglify 
uglify: { 
    // dist configuration is provided by useminPrepare 
    dist: {} 
}, 

cssmin: { 
    dist: {} 
}, 

// Filerev 
filerev: { 
    options: { 
    encoding: 'utf8', 
    algorithm: 'md5', 
    length: 20 
    }, 
    release: { 
    // filerev:release hashes(md5) all assets (images, js and css in dist directory 
    files: [{ 
     src: [ 
     'dist/scripts/*.js', 
     'dist/styles/*.css', 
     ] 
    }] 
    } 
}, 

// Usemin 
// Replaces all assets with their revved version in html and css files. 
// options.assetDirs contains the directories for finding the assets 
// according to their relative paths 
usemin: { 
    html: ['dist/*.html'], 
    css: ['dist/styles/*.css'], 
    options: { 
    assetsDirs: ['dist', 'dist/styles'] 
    } 
}, 

watch: { 
    copy: { 
    files: [ 'app/**', '!app/**/*.css', '!app/**/*.js'], 
    tasks: [ 'build' ] 
    }, 

    scripts: { 
    files: ['app/scripts/app.js'], 
    tasks:[ 'build'] 
    }, 

    styles: { 
    files: ['app/styles/mystyles.css'], 
    tasks:['build'] 
    }, 

    livereload: { 
    options: { 
     livereload: '<%= connect.options.livereload %>' 
    }, 

    files: [ 
     'app/{,*/}*.html', 
     '.tmp/styles/{,*/}*.css', 
     'app/images/{,*/}*.{png,jpg,jpeg,gif,webp,svg}' 
    ] 
    } 
}, 

connect: { 
    options: { 
    port: 9000, 
    // Change this to '0.0.0.0' to access the server from outside. 
    hostname: 'localhost', 
    livereload: 35729 
    }, 

    dist: { 
    options: { 
     open: true, 
     base:{ 
     path: 'dist', 
     options: { 
      index: 'menu.html', 
      maxAge: 300000 
     } 
     } 
    } 
    } 
} 
    }); 

    grunt.registerTask('build', ['clean', 'jshint', 'useminPrepare', 
    'concat', 'cssmin', 'uglify', 'copy', 'filerev', 'usemin']); 
    grunt.registerTask('default', ['build']); 
    grunt.registerTask('serve',['build','connect:dist','watch']); 
    }; 

Answer 1

あるかもしれない以下のコードがお手伝いします：

//grunt.registerTask('build', ['styles', 'static']); 
    grunt.registerTask('build', function() { 
    grunt.file.mkdir('build/js'); 
    grunt.file.mkdir('build/fonts'); 
    grunt.file.mkdir('build/css'); 
    grunt.task.run(['stylus', 'copy', 'browserify']); 
    }); 
    grunt.registerTask('default', ['build', 'watch']); 

何distフォルダはありませんが、前のビルドタスクを実行するものを作成します。