Vue-cli 3.xx一次性引入Less全局变量

安装：style-resources-loader

vue add style-resources-loader

然后在vue.config.js中添加

const path = require('path')

module.exports = {

  pluginOptions: {

    'style-resources-loader': {

      preProcessor: 'less',

      patterns: [path.resolve(__dirname,'src/assets/vars.less')]

    }

  }

}