isFixedFeature function

bool isFixedFeature(
  1. int edition,
  2. String featureKey
)

Whether featureKey is FIXED (non-overridable) at edition — i.e. setting it via a features option is a hard error.

Implementation

bool isFixedFeature(int edition, String featureKey) {
  final entry = _defaultsEntryFor(edition);
  final fixed = entry['fixed'] as Map<String, String>;
  return fixed.containsKey(featureKey);
}