type_visitor library Null safety

Classes

TypeVisitor<R>
Interface for type visitors. [...]
TypeVisitorWithArgument<R, A>
Interface for type visitors that have one argument. [...]
UnifyingTypeVisitor<R>
Invokes visitDartType from any other visitXyz method. [...]
UnifyingTypeVisitorWithArgument<R, A>
Invokes visitDartType from any other visitXyz method. [...]