mapper

Mapper enforces immutable properties using let declarations in Mappable objects, ensuring thread-safe and predictable state, as shown in the User struct example where id and photoURL are immutable.

It converts JSON to strongly typed Swift objects with error-throwing for missing fields, reducing runtime crashes; for instance, the init method uses try for required fields like id.

Supports custom transformations for complex JSON structures, such as extracting a first name from a full string via transformation functions, allowing handling of non-standard formats.

Integrates with Swift enums through the Convertible protocol or raw values, enabling type-safe mapping of JSON to enum cases, as demonstrated with UserType mapping from a string.