@dr.pogodin/react-utils/build/web/client/init.js

Collection of generic ReactJS components and utils

/**
 * Initialization of client-side environment.
 */

/* global window */

import { getBuildInfo } from "../shared/utils/isomorphy/buildInfo";
const buildInfo = getBuildInfo();

// TODO: Should be moved into buildInfo module?

if (process.env.NODE_ENV !== 'production') {
  // eslint-disable-next-line no-console
  console.warn('Dev mode: "BUILD_INFO" attached to the global "window"');

  // eslint-disable-next-line no-underscore-dangle
  window.__DEV_BUILD_INFO__ = BUILD_INFO;
}

/* TODO: A proper logger should be moved to `@dr.pogodin/react-utils`. */
const {
  useServiceWorker
} = buildInfo;
if (useServiceWorker) {
  const {
    navigator
  } = window;
  if ('serviceWorker' in navigator) {
    window.addEventListener('load', () => {
      void (async () => {
        try {
          // Note: no matter the "publicPath", we want to serve the service worker
          // from the web app root, to allow it control any and all pages of the
          // web app (otherwise, it will be restricted to the scope of its path).
          // The server takes it into account.
          const reg = await navigator.serviceWorker.register('/__service-worker.js');
          // eslint-disable-next-line no-console
          console.log('SW registered:', reg);
        } catch (err) {
          // eslint-disable-next-line no-console
          console.log('SW registration failed:', err);
        }
      })();
    });
  }
}
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