removeEventListener method

void removeEventListener(
  1. String type,
  2. Function listener
)

Implementation

void removeEventListener(String type, Function listener) {
  if (_listeners == null) return;

  var listeners = _listeners!;
  var listenerArray = listeners[type];

  if (listenerArray != null) {
    var index = listenerArray.indexOf(listener);

    if (index != -1) {
      listenerArray.removeRange(index, index + 1);
    }
  }
}