Checks to see if the mutation observer API is supported on the current platform.
static bool get supported {
  return JS(
      'bool', '!!(window.MutationObserver || window.WebKitMutationObserver)');
}
    © 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
    https://api.dart.dev/stable/2.5.0/dart-html/MutationObserver/supported.html