[Feature request] can preCondition have option to provide default value aside from null?

Now the preCondition can check and map the property to null when checking result is falsely. Can this function provide a way to set the default value aside from null ?

[ymchun]

@nartc I’ve submitted PR, plz check

[nartc]

@ymchun Thanks for the request. preCondition with defaultValue has been added in version 3.1. I also added defaultValue to condition() as well since I think it should be supported.

Mapper.createMap(Model, ViewModel)
   .forMember(d => d.destination, opts => opts.preCondition(predicate, defaultValue))