whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>({ TResult? raw(String name, Uint8List bytes)?, })

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>({
  TResult? Function(String name, Uint8List bytes)? raw,
}) {
  final _that = this;
  switch (_that) {
    case _JsModuleBytecode() when raw != null:
      return raw(_that.name, _that.bytes);
    case _:
      return null;
  }
}