Refactoring For Mortals

Refactoring for Mortals

Dan Levy Denver React Meetup, April 17, 2018

Overture

1. Tiny Functions

• Decouple and Extract Logic
• Aim for 1-2 lines

2. DRY is Overrated

• Make your code readable by other humans

Keys to Refactoring

• Pure Functions
• Avoid this
• Use descriptive names
• One or two words
  • Return early, not often
• Use destructuring!
• Spread for for 2x the win

Tips for Code Reviews

1. Big Function?
   • Identify steps (validation, shaping)
   • Ask if small functions are right for you
   • Suggest pure functions
   • Count pathways to prove complexity
2. Three-word Variables?
   • As if they are in the right place
   • Could the context be more clear?