cfe9932a9e
This is the first step in adjusting the runtime error raised on a pattern mismatch in an irrefutable context. For now, the error message isn't specialized and doesn't reflect the nature of the mismatch. Part of https://github.com/dart-lang/sdk/issues/51720 Part of https://github.com/dart-lang/sdk/issues/49749 Change-Id: Ie4b997a1a36e92b25f1372f4dd98941dbcc08b61 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/290842 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Chloe Stefantsova <cstefantsova@google.com>