ErrorFormatter typedef Null safety

  1. @Deprecated('Will be removed in 0.13.0.')
String ErrorFormatter (
  1. dynamic actual,
  2. Matcher matcher,
  3. String? reason,
  4. Map matchState,
  5. bool verbose

The type used for functions that can be used to build up error reports upon failures in expect.


@Deprecated('Will be removed in 0.13.0.')
typedef ErrorFormatter = String Function(dynamic actual, Matcher matcher,
    String? reason, Map matchState, bool verbose);