register method Null safety

Future<ServiceWorkerRegistration> register (
  1. String url,
  2. [Map? options]
)

Implementation

Future<ServiceWorkerRegistration> register(String url, [Map? options]) {
  var options_dict = null;
  if (options != null) {
    options_dict = convertDartToNative_Dictionary(options);
  }
  return promiseToFuture<ServiceWorkerRegistration>(
      JS("", "#.register(#, #)", this, url, options_dict));
}