webpack.config.demo.js

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

module.exports = ({locale}={}) => {
  let ttag = {
    resolve: {
      translations: `i18n/${locale}.po`,
      unresolved: 'skip'
    },
  }

  let config = {
    entry: {
      index: path.join(__dirname, "demo/src/index.js"),
      lc: path.join(__dirname, "demo/src/lc.js"),
      "input-fields": path.join(__dirname, "demo/src/input-fields.js"),
    },
    output: {
      path: path.join(__dirname, "demo/dist"),
      filename: "[name]-bundle.js"
    },
    module: {
      rules: [
        {
          test: /\.(js|jsx)$/,
          use: {
            loader: "babel-loader",
            options: {
              plugins: null
            },
          },
          exclude: /node_modules/
        },
        {
          test: /\.(css|sass|scss)$/,
          use: [
            MiniCssExtractPlugin.loader,
            {
              loader: 'css-loader',
              options: {
                importLoaders: 2,
                sourceMap: true
              }
            },
            {
              loader: 'sass-loader',
              options: {
                sourceMap: true,
                sassOptions: {
                  includePaths: [path.resolve('./node_modules/')]
                }
              }
            }
          ]
        },
        {
        test: /\.svg/,
          use: {
            loader: 'svg-url-loader',
            options: {}
          }
        }
      ]
    },
    plugins: [
      new MiniCssExtractPlugin({
        filename: "[name]-bundle.css",
      }),
      new HtmlWebpackPlugin({
        template: path.join(__dirname, "demo/src/index.html"),
        filename: "./index.html",
        chunks: ['index']
      }),
      new HtmlWebpackPlugin({
        template: path.join(__dirname, "demo/src/lc.html"),
        filename: "./lc.html",
        chunks: ['lc']
      }),
      new HtmlWebpackPlugin({
        template: path.join(__dirname, "demo/src/input-fields.html"),
        filename: "./input-fields.html",
        chunks: ['input-fields']
      })
    ],
    resolve: {
      extensions: [".js", ".jsx", ".scss", ".css", ".svg"]
    },
    devServer: {
      host: '0.0.0.0',
      port: 3001,
      contentBase: path.join(__dirname, 'demo/src/public'),
    },
  };

  if (locale != null){
    config.module.rules[0].use.options.plugins = [['ttag', ttag]];
  }

  return config;

};