description

# IntersectionObserver constructor Null safety

IntersectionObserver(

1. IntersectionObserverCallback callback,
2. [Map? options]

)

## Implementation

    factory IntersectionObserver(IntersectionObserverCallback callback,
        [Map? options]) {
      if (options != null) {
        var callback_1 = convertDartClosureToJS(callback, 2);
        var options_2 = convertDartToNative_Dictionary(options);
        return IntersectionObserver._create_1(callback_1, options_2);
      }
      var callback_1 = convertDartClosureToJS(callback, 2);
      return IntersectionObserver._create_2(callback_1);
    }