constructUsing

Override destination construction for one mapping.

Every strategy provides a default destination constructor. Use constructUsing() when one mapping needs a factory, dependency, or non-default constructor.

createMap(
  mapper,
  User,
  UserDto,
  constructUsing((source, destinationIdentifier) => {
    return new UserDto(source.id);
  }),
);

The callback receives the source object and destination identifier. It must return the destination instance that AutoMapper will populate.

For a one-off invocation, MapOptions.destinationConstructor can override destination construction without changing the registered mapping.