JavaScript Katas: Bean & Byte Coffee Shop

A progressive set of beginner-friendly katas for a 2.5 hour session.

The story builds from simple pricing logic to a tiny Express app with forms and a dynamic order board.

Quick start

1. Install dependencies:

npm install

2. Run all tests:

npm test

3. Run one kata test file:

npm run test:kata -- katas/01-customer-greeting/solution.test.js

Kata order

1. katas/01-customer-greeting
2. katas/02-drink-pricing
3. katas/03-order-subtotal
4. katas/04-discount-rules
5. katas/05-cli-order-summary
6. katas/06-http-menu-routes
7. katas/07-form-post-order
8. katas/08-order-board-stretch

Teaching pattern

• Run tests first (red)
• Implement the TODO in solution.js (green)
• Refactor if needed
• Move to the next kata