task/webpack.config.js at viktor · Examplio/task · GitHub

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const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

const addViewBoxPlugin = {
  name: 'addViewBox',
  fn: () => ({
    element: {
      enter: (node, parent) => {
        const { width, height, viewBox } = node.attributes;
        if (node.name === 'svg' && parent.type === 'root' && !viewBox && width && height) {
          node.attributes.viewBox = `0 0 ${parseFloat(width)} ${parseFloat(height)}`;
        }
      },
    },
  }),
};

module.exports = (_env, argv) => {
  const isProd = argv.mode === 'production';

  return {
    entry: './src/index.jsx',
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: isProd ? 'js/[name].[contenthash:8].js' : 'js/[name].js',
      assetModuleFilename: 'assets/[name].[contenthash:8][ext]',
      // Relative paths, so the build works on any sub-path (e.g. GitHub Pages).
      publicPath: '',
      clean: true,
    },
    resolve: {
      extensions: ['.js', '.jsx'],
    },
    devtool: isProd ? false : 'eval-cheap-module-source-map',
    module: {
      rules: [
        {
          test: /\.jsx?$/,
          exclude: /node_modules/,
          use: {
            loader: 'babel-loader',
            options: { envName: isProd ? 'production' : 'development' },
          },
        },
        {
          test: /\.s?css$/,
          use: [
            isProd
              ? // CSS is emitted to css/, so asset URLs inside it must go one level up.
                { loader: MiniCssExtractPlugin.loader, options: { publicPath: '../' } }
              : 'style-loader',
            { loader: 'css-loader', options: { importLoaders: 2 } },
            'postcss-loader',
            'sass-loader',
          ],
        },
        {
          // `import Icon from './icon.svg'` -> inline React component (fill/stroke styled from CSS).
          test: /\.svg$/,
          issuer: /\.jsx?$/,
          resourceQuery: { not: [/url/] },
          use: [
            {
              loader: '@svgr/webpack',
              options: {
                svgoConfig: {
                  plugins: [
                    {
                      name: 'preset-default',
                      params: { overrides: { removeViewBox: false, cleanupIds: false } },
                    },
                    addViewBoxPlugin,
                  ],
                },
              },
            },
          ],
        },
        {
          test: /\.svg$/,
          resourceQuery: /url/,
          type: 'asset/resource',
        },
        {
          test: /\.svg$/,
          issuer: { not: [/\.jsx?$/] },
          type: 'asset/resource',
        },
        {
          test: /\.(png|jpe?g|webp)$/,
          type: 'asset/resource',
        },
      ],
    },
    plugins: [
      new HtmlWebpackPlugin({
        template: './public/index.html',
        favicon: './public/favicon-32x32.png',
      }),
      isProd &&
        new MiniCssExtractPlugin({
          filename: 'css/[name].[contenthash:8].css',
        }),
    ].filter(Boolean),
    devServer: {
      port: 3000,
      open: false,
      hot: true,
    },
    optimization: {
      splitChunks: {
        cacheGroups: {
          vendor: {
            test: /[\\/]node_modules[\\/]/,
            name: 'vendor',
            chunks: 'all',
          },
        },
      },
    },
    performance: {
      hints: isProd ? 'warning' : false,
      // React alone is ~215 KiB raw (~68 KiB gzipped).
      maxEntrypointSize: 320 * 1024,
    },
  };
};