编译没有样式文件(No style files after build)

[StringKe]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.4.11

Environment

mac 10.15.3 ,vue 2.6.11,

Reproduction link

https://github.com/vueComponent/ant-design-vue

Steps to reproduce

1.vue cli create typescript vue project
2.vue add ant-design(select full impory and less var)
3.code something

What is expected?

编译后包含样式文件,style files after build

What is actually happening?

没有样式文件编译的css文件极其小
no style files after build
style files after build is small file

---

整个项目只有antd没有混用。。。莫名就无法编译出css了之前一直是好的。反复百度和查找解决方法但是都没有解决，看到了vue的issues说是webpack的副作用 sideEffects 造成的我试了下，没有解决，在开发下样式是正常加载的，编译后就没有

vue.config.js

const isProduction = process.env.NODE_ENV !== 'development';
module.exports = {
  publicPath: isProduction ? '././' : '/',
  // parallel: false,
  productionSourceMap: false,
  css: {
    // extract: false,
    // sourceMap: false,
    // requireModuleExtension: false,
    loaderOptions: {
      less: {
        javascriptEnabled: true,
        globalVars: {
          appClassName: 'designApp',
        },
      },
    },
  },
  pluginOptions: {
    'style-resources-loader': {
      preProcessor: 'less',
      patterns: [],
    },
  },
  chainWebpack: (config) => {
    config.optimization.sideEffects(false);
  },
};

[StringKe]

import 'ant-design-vue/dist/antd.css'; 此 css 应该是 2w 行
编译后只有 800 行

[StringKe]

已经找到还原的方式 此项目 https://github.com/StringKe/test 里面可以完美复现，serve下正常工作，build下css文件缺失

[tangjinzhou]

postcss.config.js 问题，不清楚你那个插件干嘛的 删掉就可以了

[github-actions]

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