game-of-life/webpack.common.js

const path = require("path");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const { DefinePlugin } = require("webpack");

module.exports = {
  entry: {
    app: "./src/index.js",
  },
  plugins: [
    // new CleanWebpackPlugin(['dist/*']) for < v2 versions of CleanWebpackPlugin
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: "index.html",
    }),
    new DefinePlugin({
      "process.env.API_TOKEN": JSON.stringify(process.env.API_TOKEN),
    }),
  ],
  output: {
    filename: "[name].bundle.js",
    path: path.resolve(__dirname, "dist"),
    chunkFilename: "[name].bundle.js",
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
        },
      },
      {
        test: /\.css$/i,
        use: ["style-loader", "css-loader"],
      },
      {
        test: /\.html$/i,
        loader: "html-loader",
        options: {
          attributes: true,
        },
      },
    ],
  },
};