wrapError method
If any error is thrown by reduce
or before
, you have the chance
to further process it by using wrapError
. Usually this is used to wrap
the error inside of another that better describes the failed action.
For example, if some action converts a String into a number, then instead of
throwing a FormatException you could do:
wrapError(error, _) => UserException("Please enter a valid number.", cause: error)
If you want to disable the error you can return null
. For example, if you want
to disable errors of type MyException
:
wrapError(error, _) => (error is MyException) ? null : error
If you don't want to modify the error, just return it unaltered (or don't override this method).
See also:
- GlobalWrapError which is a global error wrapper that will be called after this one.
Implementation
Object? wrapError(Object error, StackTrace stackTrace) => error;