webpack.config.js

// Copyright (c) 2018-present, Cruise LLC

// This source code is licensed under the Apache License, Version 2.0,
// found in the LICENSE file in the root directory of this source tree.
// You may not use this file except in compliance with the License.

const path = require("path");
const nodeExternals = require("webpack-node-externals");

const target = process.env.ROSBAG_TARGET || "";

module.exports = {
  entry: `./src/${target}/index.ts`,
  devtool: "inline-source-map",
  resolve: {
    extensions: [".ts", ".js"]
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: {
          loader: "ts-loader",
        },
        exclude: /node_modules/,
      },
    ],
  },
  output: {
    filename: "index.js",
    path: path.resolve(__dirname, `dist/${target}`),
    library: "rosbag",
    libraryTarget: "umd",
    // https://github.com/webpack/webpack/issues/6525#issuecomment-417580843
    globalObject: "typeof self !== 'undefined' ? self : this",
  },
  target,
  externals: target === "node" ? [nodeExternals()] : undefined,
};