webpack.config.js

const toolbox = require("./node_modules/devtools-launchpad/index");
const getConfig = require("./bin/getConfig");
const {isDevelopment} = require("devtools-config");
const { NormalModuleReplacementPlugin } = require("webpack");
const path = require("path");
const projectPath = path.join(__dirname, "src");

/*
 * builds a path that's relative to the project path
 * returns an array so that we can prepend
 * hot-module-reloading in local development
 */
function getEntry(filename) {
  return [path.join(projectPath, filename)];
}

function buildConfig(envConfig) {
  const webpackConfig = {
    entry: {
      debugger: getEntry("main.js"),
      "source-map-worker": getEntry("utils/source-map-worker.js"),
      "pretty-print-worker": getEntry("utils/pretty-print-worker.js"),
      "integration-tests": getEntry("test/integration/tests.js"),
    },

    output: {
      path: path.join(__dirname, "assets/build"),
      filename: "[name].js",
      publicPath: "/assets/build",
      libraryTarget: "umd"
    },

    resolve: {
      alias: {
        "react-dom": "react-dom/dist/react-dom"
      }
    }
  };

  if (!isDevelopment()) {
    webpackConfig.output.libraryTarget = "umd";
    webpackConfig.plugins = []

    const mappings = [
      [/\.\/mocha/, "./mochitest"],
      [/\.\.\/utils\/mocha/, "../utils/mochitest"],
      [/\.\/utils\/mocha/, "./utils/mochitest"]
    ]

    mappings.forEach(([regex, res]) => {
      webpackConfig.plugins.push(
        new NormalModuleReplacementPlugin(regex, res)
      )
    })
  }

  return toolbox.toolboxConfig(webpackConfig, envConfig);
}



const envConfig = getConfig();

module.exports = buildConfig(envConfig);