webpack.config.js

var webpack = require("webpack");
var path = require("path");
var fileSystem = require("fs-extra");
var env = require("./utils/env");
var { CleanWebpackPlugin } = require("clean-webpack-plugin");
var CopyWebpackPlugin = require("copy-webpack-plugin");
var HtmlWebpackPlugin = require("html-webpack-plugin");

var alias = {
  "@": path.resolve("src"),
};

if (env.NODE_ENV == "development") {
  alias["react-dom"] = "@hot-loader/react-dom";
}

// load the secrets
var secretsPath = path.join(__dirname, "secrets." + env.NODE_ENV + ".js");
var fileExtensions = [
  "jpg",
  "jpeg",
  "png",
  "gif",
  "eot",
  "otf",
  "svg",
  "ttf",
  "woff",
  "woff2",
];

if (fileSystem.existsSync(secretsPath)) {
  alias["secrets"] = secretsPath;
}

var options = {
  mode: process.env.NODE_ENV || "development",
  entry: {
    popup: path.join(__dirname, "src", "pages", "Popup", "index.tsx"),
    background: path.join(__dirname, "src", "pages", "background", "index.ts"),
    contentScript: path.join(__dirname, "src", "pages", "Content", "index.ts"),
  },
  chromeExtensionBoilerplate: {
    notHotReload: ["contentScript"],
  },
  output: {
    path: path.resolve(__dirname, "build"),
    filename: "[name].bundle.js",
  },
  module: {
    rules: [
      {
        // look for .css or .scss files
        test: /\.(css|less)$/,
        // in the `src` directory
        use: [
          {
            loader: "style-loader",
          },
          {
            loader: "css-loader",
          },
          {
            loader: "less-loader",
            options: {
              lessOptions: {
                javascriptEnabled: true,
              },
              sourceMap: true,
            },
          },
        ],
      },
      {
        test: new RegExp(".(" + fileExtensions.join("|") + ")$"),
        loader: "file-loader?name=[name].[ext]",
        exclude: /node_modules/,
      },
      {
        test: /\.html$/,
        loader: "html-loader",
        exclude: /node_modules/,
      },
      {
        test: path.resolve(__dirname, "utils", "inpage.js"),
        loader: "val-loader",
        exclude: /node_modules/,
      },
      {
        test: /\.(js|jsx)$/,
        loader: "babel-loader",
        exclude: /node_modules/,
      },
      {
        test: /\.tsx?$/,
        use: [
          {
            loader: "ts-loader",
            options: {
              transpileOnly: true,
            },
          },
        ],
        exclude: /node_modules/,
      },
    ],
  },
  resolve: {
    alias: alias,
    extensions: fileExtensions
      .map((extension) => "." + extension)
      .concat([".tsx", ".ts", ".jsx", ".js", ".css"]),
  },
  plugins: [
    new webpack.ProgressPlugin(),
    // clean the build folder
    new CleanWebpackPlugin({
      verbose: true,
      cleanStaleWebpackAssets: false,
    }),
    // expose and write the allowed env vars on the compiled bundle
    new webpack.EnvironmentPlugin(["NODE_ENV"]),
    new CopyWebpackPlugin(
      [
        {
          from: "src/manifest.json",
          to: path.join(__dirname, "build"),
          force: true,
          transform: function (content, path) {
            // generates the manifest file using the package.json informations
            return Buffer.from(
              JSON.stringify({
                description: process.env.npm_package_description,
                version: process.env.npm_package_version,
                ...JSON.parse(content.toString()),
              })
            );
          },
        },
      ],
      {
        logLevel: "info",
        copyUnmodified: true,
      }
    ),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, "src", "pages", "Popup", "index.html"),
      filename: "popup.html",
      chunks: ["popup"],
    }),
  ],
};

if (env.NODE_ENV === "development") {
  options.devtool = "cheap-module-eval-source-map";
}

module.exports = options;