npm – cleancss命令不起作用

我在本地安装了clean-css,但我的npm脚本抛出错误,因为找不到cleancss(sh：cleancss：command not found).
我尝试直接从命令行运行cleancss并全局安装(npm install -g clean-css)但我的 shell仍然不知道它.所有其他包都工作正常.
这是我的package.json的样子：

{
  "scripts": {
    "lint": "echo '=> linting' && jshint **/*.js",
    "minify:js": "echo '=> minify:js' && uglifyjs main.js -o public/js/main.min.js",
    "minify": "echo '=> minify:css' && cleancss main.css -o public/css/main.min.css"
  },
  "devDependencies": {
    "clean-css": "^4.0.2",
    "jshint": "^2.9.4",
    "uglify-js": "^2.7.5"
  }
}

我错过了什么？

从 clean-css docs：

clean-css 4.0 introduces some breaking changes:

• API and CLI interfaces are split, so API stays in this repository while CLI moves to 07001;

您只安装了API.您需要安装CLI.跑：

npm install --save-dev clean-css-cli
npm uninstall --save-dev clean-css

卸载仅API版本并安装CLI.