description

# MutationObserver constructor

MutationObserver(

1. MutationCallback callback

)

## Implementation

    factory MutationObserver(MutationCallback callback) {
      // Dummy statement to mark types as instantiated.
      JS('MutationObserver|MutationRecord', '0');

      return JS(
        'MutationObserver',
        'new(window.MutationObserver||window.WebKitMutationObserver||'
            'window.MozMutationObserver)(#)',
        convertDartClosureToJS(_wrapBinaryZone(callback), 2),
      );
    }