Similar to variable types, you can define types for function parameters and return values. While the parameter type is declared next to the parameter name, the return type is declared just before ...

On a personal note, I'm not sure that it's helpful to have the fat arrow used for what seems to me like two different things: separating the return type from the parameters in the declaration and ...

Fortunately, thanks to TypeScript duck typing, converting from JSON to a class is easy: I just need to change the way I declare my method's parameter from string to the type I want (CustomerDTO, in ...