const path = require("path");

module.exports = {
  publicPath: "./",
  productionSourceMap: false,
  chainWebpack: config => {
    
    // 移除 prefetch 插件
    config.plugins.delete('prefetch')
    config.plugins.delete('preload')


    // 配置全局css变量
    const types = ['vue-modules', 'vue', 'normal-modules', 'normal']
    types.forEach(type => addStyleResource(config.module.rule('less').oneOf(type)))


    // 配置路径别名
    config.resolve.alias
      //第一个参数：别名 第二个参数：路径
      .set('@page', resolve('src/assets/less/page'))
      .set('@less', resolve('src/assets/less'))


    // 配置pug
    config.module.rule('pug')
      .test(/\.pug$/)
      .use('pug-html-loader')
      .loader('pug-html-loader')
      .end()

  }
}


function addStyleResource(rule) {
  rule.use('style-resource')
    .loader('style-resources-loader')
    .options({
      patterns: [
        path.resolve(__dirname, './src/assets/less/_.less'),
      ],
    })
}


function resolve(dir) {
  return path.join(__dirname, dir) //path.join(_dirname)设置绝对路径
}