promise property
      
      Future
      get
      promise
      
    
    
    
Implementation
Future<dynamic> get promise =>
    js_util.promiseToFuture(js_util.getProperty(this, 'promise'));
      
      set
      promise
      (Future newValue) 
      
    
    
    
Implementation
set promise(Future<dynamic> newValue) {
  js_util.setProperty(this, 'promise', newValue);
}