[email protected] with [email protected]

Question

I've configured [email protected] (with [email protected]) to work with html-webpack-plugin (plus [email protected] and [email protected]):

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const postcssPresetEnv = require('postcss-preset-env');

module.exports = {
  entry: {
    index: './src/index.js',
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: './src/index.html',
    }),
    new MiniCssExtractPlugin({
      filename: '[name].css',
    }),
  ],
  output: {
    publicPath: './',
    filename: '[name].js',
    path: path.resolve(__dirname, 'dist'),
  },
  module: {
    rules: [
      {
        test: /\.s?css$/i,
        use: [
          { loader: MiniCssExtractPlugin.loader },
          'css-loader',
          { 
            loader: 'postcss-loader',
            options: {
              ident: 'postcss',
              plugins: () => [
                postcssPresetEnv(/* pluginOptions */)
              ]
            }
          },
          'sass-loader',
        ],
      },
      {
        test: /\.(png|svg|jpg|jpeg|gif)$/i,
        loader: 'file-loader',
      },
    ],
  },
};

Up to that point, everything is working fine (style.scss is imported in index.js, the stylesheet itself loads 2 jpgs with background-image: url(...)).

Now, my html template (index.html) references a file (<img src="./file.svg">), that gets copied (by file-loader, with another name). But the reference on the final index.html must reflect this change.

So I installed [email protected]:

  [...]
  module: {
    rules: [
      {
        test: /\.html$/i,
        loader: 'html-loader',
      },
  [...]

Now npx webpack build crashes without further instructions:

[webpack-cli] Compilation finished
assets by status 84 KiB [cached] 2 assets
./src/index.js 26 bytes [built] [code generated]
1 ERROR in child compilations
webpack 5.10.0 compiled with 1 error in 867 ms
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Now what? How to get debugging information? What has gone wrong?

$ npm list

[email protected] /home/rslemos/workspace/a/webpack
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
├── [email protected]
└── [email protected]