SCM-Manager/scm-ui/ui-webapp/webpack/serve.js

/*
 * Copyright (c) 2020 - present Cloudogu GmbH
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see https://www.gnu.org/licenses/.
 */

const Webpack = require("webpack");
const WebpackDevServer = require("webpack-dev-server");
const webpackConfig = require("./webpack.config");

const compiler = Webpack(webpackConfig);
const devServerConfig = webpackConfig[0].devServer;
const server = new WebpackDevServer(devServerConfig, compiler);

server.startCallback(() => {
  console.log(`Starting server on http://localhost:${devServerConfig.port}`);
});

// if we could access the parent id of our current process
// we start watching it, because a changing parent id means
// that the parent process has died.
// On linux our process does not receive any signal if our parent dies,
// e.g.: ctrl+c in gradle
if (process.ppid) {
  const { ppid } = process;
  setInterval(() => {
    if (ppid !== process.ppid) {
      server.close();
      process.exit();
    }
  }, 500);
}