# visibilityChangeEvent constant

EventStreamProvider<Event> const visibilityChangeEvent = const _CustomEventStreamProvider<Event>(_determineVisibilityChangeEventType)

Static factory designed to expose `visibilitychange` events to event handlers that are not necessarily instances of Document.

See EventStreamProvider for usage information.

## Implementation

    static const EventStreamProvider<Event> visibilityChangeEvent =
        const _CustomEventStreamProvider<Event>(
            _determineVisibilityChangeEventType)