All chapters · State design

• State design
• Encapsulation
• Changing requirements
• TypeScript
• Union types
• Common AI mistakes
• Spread

1. 01
   Bundle the updates that have to happen together

   Nobody got it wrong. Everyone carefully copied the code closest to hand.

   • State design
   • Encapsulation
   • Changing requirements
2. 02
   Make combinations that must never exist impossible to write

   A rule that depends on people paying attention falls apart the moment something that can't pay attention writes the code.

   • TypeScript
   • Union types
   • State design
   • Common AI mistakes