sanitizeRouteInformationState function

@visibleForTesting Object? sanitizeRouteInformationState(Object? state)

Returns state unchanged when its complete object graph is JSON-safe.

Navigation arguments remain available through PageSettings in memory. This only prevents opaque Dart objects (for example domain models), cyclic containers, maps with non-string keys, and non-finite numbers from reaching browser history serialization.

Implementation

@visibleForTesting
Object? sanitizeRouteInformationState(Object? state) {
  return _isJsonSafeRouteInformationState(
    state,
    HashSet<Object>.identity(),
  )
      ? state
      : null;
}