webpack.common.js

/* eslint-disable @typescript-eslint/no-var-requires */
const HtmlWebpackPlugin = require("html-webpack-plugin");
const webpack = require("webpack");
const path = require("path");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const CopyPlugin = require("copy-webpack-plugin");
const dotenv = require("dotenv");

const dotenvConfig = dotenv && dotenv.config && dotenv.config();
const env = (dotenvConfig && dotenvConfig.parsed) || process.env;
const envKeys = Object.keys(env).reduce((prev, next) => {
  // eslint-disable-next-line no-param-reassign
  prev[`process.env.${next}`] = JSON.stringify(env[next]);
  return prev;
}, {});

module.exports = {
  entry: "./src/index.tsx",
  output: {
    filename: "[name].[hash].bundle.js",
    chunkFilename: "[name].[hash].bundle.js",
    path: path.resolve(__dirname, "dist"),
    publicPath: "/",
  },
  performance: { hints: false },
  plugins: [
    new webpack.DefinePlugin(envKeys),
    new CleanWebpackPlugin(),
    new CopyPlugin({ patterns: ["./public"] }),
    new HtmlWebpackPlugin({ template: "./public/index.html" }),
  ],
  resolve: {
    modules: [__dirname, "src", "node_modules"],
    extensions: ["*", ".js", ".jsx", ".tsx", ".ts"],
    alias: {
      "@src": path.resolve(__dirname, "src/"),
    },
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        loader: require.resolve("babel-loader"),
      },
      {
        test: /\.(png|jpe?g|svg|woff2?|ttf|eot)$/,
        loader: "url-loader",
        options: {
          limit: 8192,
          name: "./assets/[hash].[ext]",
        },
      },
    ],
  },
  optimization: {
    splitChunks: {
      cacheGroups: {
        vendor: {
          test: /node_modules/,
          chunks: "initial",
          name: "vendor",
          enforce: true,
        },
      },
    },
  },
};