Building a Rock-Paper-Scissors CLI with TypeScript — Union Types, Conditionals, and Jest

📰 Dev.to · Uya

Learn to build a Rock-Paper-Scissors CLI with TypeScript, covering union types, conditionals, and Jest testing

intermediate Published 25 May 2026
Action Steps
  1. Build a Rock-Paper-Scissors game logic using TypeScript union types
  2. Implement conditional statements to determine game outcomes
  3. Configure Jest for testing the game logic
  4. Write unit tests for the game using Jest
  5. Run the tests and verify the game's correctness
Who Needs to Know This

Software engineers and developers looking to improve their TypeScript skills can benefit from this tutorial, especially those interested in building command-line interfaces and testing with Jest

Key Insight

💡 TypeScript's union types and conditional statements can be used to build a robust and testable Rock-Paper-Scissors game logic

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🚀 Build a Rock-Paper-Scissors CLI with TypeScript! Learn union types, conditionals, and Jest testing 🎉

Key Takeaways

Learn to build a Rock-Paper-Scissors CLI with TypeScript, covering union types, conditionals, and Jest testing

Full Article

Introduction This is my second article as a Java engineer learning TypeScript from...
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