Bootstrapper (chassis pattern) with a restarting capabilities for TypeScript/Javascript using 'top-level' async/await.

boot.ts

// random bootstrapper for any theoretical ts/js application

const timeout = (millis: number, fn: () => void) => new Promise(c => setTimeout(c, millis)).then(fn);

(async function boot() {

  // this try-catch is an additional safety net used for (poorly) written applications in which errors
  // are not properly caught
  try {
    // some random loading of initial components
    const config = {}; // some fs load config from disc
    // call some main function once done booting and inject hypothetical config
    require('main.js').main(config)
  } catch (err) {
    console.error(err);
    // timeout magic
    console.info('I seem to be crashed, rebooting...');
    // await a timeout before rebooting to make sure we dont spam logs, let the environment 'settle', etc...
    await timeout(10000, boot);
  }

})();