async function start()

in public/main.js [22:52]

• 28 lines of code
• 5 McCabe index (conditional complexity)

async function start() {
  let config;
  try {
    const response = await fetch('config.json');
    config = await response.json();
  } catch (e) {
    console.error(`Config file is missing or invalid`);
    return;
  }
  const urlTokens = new URL(window.location, true);
  const emsClient = await getEmsClient(config, urlTokens.query.manifest, urlTokens.query.locale);

  if (!emsClient) {
    console.error(`Cannot load the required manifest for "${urlTokens.query.manifest}"`);
    return;
  } else {
    console.info(`EMS Client ${emsClient._emsVersion} loaded`);
  } 
  const emsLayers = {
    file: await emsClient.getFileLayers(),
    tms: await emsClient.getTMSServices(),
  };

  const serviceName = config.serviceName || 'Elastic Maps Service';
  const container = document.getElementById('wrapper');
  const root = createRoot(container);

  root.render(
    <App client={emsClient} serviceName={serviceName} layers={emsLayers} />,
  );
}