webpack.prod.js

const path = require('path');
const { merge } = require('webpack-merge');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const common = require('./webpack.common');

module.exports = merge(common, {
  mode: 'production',
  devtool: 'source-map',
  output: {
    path: path.resolve(__dirname, 'public'),
    filename: 'bundle[contenthash].js',
  },
  module: {
    rules: [
      {
        test: /\.less$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
          },
          {
            loader: 'css-loader',
          },
          {
            loader: 'less-loader',
            options: {
              lessOptions: {
                sourceMap: true,
              },
            },
          },
        ],
      },
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: 'style.[contenthash].css',
    }),
    new CleanWebpackPlugin(),
  ],
});