настроить autoprefixer webpack sass

Ребят не могу настроить autoprefixer в webpack

webpack.config

const webpack = require("webpack");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const autoprefixer = require("autoprefixer");


module.exports = {
  devtool: "source-map",
  module: {
    rules: [
      {
        test: /\.js$/,
        use: "babel-loader"
      },
      {
        test: /\.scss$/,
        use: [
          MiniCssExtractPlugin.loader,
          "css-loader",
          "postcss-loader",
          "sass-loader"
        ]
      },
      {
        test: /\.pug$/,
        loader: "pug-loader"
            },
            {
        test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: '[name].[ext]',
              outputPath: 'fonts/'
            }
          }
        ]
      }
        ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "./src/index.pug"
    }),
    new MiniCssExtractPlugin({
      filename: "style.css"
    }),
    new CleanWebpackPlugin({
      cleanAfterEveryBuildPatterns: ["dist"]
    }),
    new webpack.ProvidePlugin({
      $: "jquery",
      jQuery: "jquery",
      "window.jQuery": "jquery"
    }),
    new CopyWebpackPlugin([
      {
        from: "./src/img",
        to: "./img"
      }
    ])
  ]
};

postcss.config

module.exports = {
  plugins: [
    require('autoprefixer')
  ]
}