vue3.0项目增加less/sass

1.先安装less less-loader / scss scss-loader / style-loader

yarn add less less-loader style-loader -Doryarn add scss scss-loader style-loader -D

vue add style-resources-loader

然后会在根目录下自动建一个vue.config.js

2.更改一下配置就OK了

const path = require('path')module.exports = {
    pluginOptions: {
    'style-resources-loader': {
    preProcessor: 'less',patterns: [path.resolve(__dirname, './src/assets/style/*.less')]}}
}