Flutter freezed + json_serializable — When to Use Auto-Generated fromJson and When Not To

Why I Added freezed to My Flutter App — Unifying Model Patterns Why I did it My solo app Book Log has 4 entity models: AuthUser , Book , BookSearchResult , Sentence . Each had a different style of fromJson — some had copyWith and some didn't. No consistent pattern. Inconsistent model classes can lead to unexpected bugs. I wanted every model to follow the same structure. With freezed, adding a new model requires no guesswork. What I liked Immutable by default — const factory makes it impossible t