TYPE DRIVEN DEVELOPMENT

Shotgun Parsing

Boolean Blindness

Invalid State Combinations

Forgotten Case Bugs

Exception Blindness

Primitive Obsession

Accidental Forgery

Empty Collection Crashes

Partial Functions

Constructor Exceptions

Leaky Abstractions

Fast-Fail Validation Chains

Illegal State Transitions

Currency Mixups

Unit Mixups

Ambient Authority

Unproven Invariants

Stringly-Typed Failures

Schema Drift

Example Blind Spots

Null Pointer Branching

Positional and Parallel Data Bugs

Any-Typed Boundary Leaks

Incidental Mutation

Nested Error Handling