The Action Pattern: Clean, Obvious, Testable Code

Let’s convert a mock API endpoint for signing up new users in a mobile app into using the action pattern. When I first started writing software on the web, my code was a mishmash. Every project was loaded with unnecessarily long files and code left commented, thrown to the side of the road like an abandoned vehicle. The theme of the day was: unpredictability. Under ideal conditions—the happy path—