islizeqiang/typescript-exercises

A collection of challenging TypeScript exercises

TypeScript exercises

The goal: Let everyone play with many different TypeScript features and get an overview of TypeScript capabilities and principles.

Things to cover

1. Basic typing.
2. Refining types.
3. Union types.
4. Merged types.
5. Generics.
6. Type declarations.
7. Module augmentation.
8. Advanced type mapping.

Rules and principles

1. Avoid using any type at all costs.

2. Difficulty quickly grows one exercise after another.

3. Don't open next exercises before finishing previous ones. Next exercises may contain spoilers and will prevent you from enjoying the delightful process of TypeScript debugging.

4. Feel free to send a pull-request with your solutions if you need some additional feedback.

5. Provide feedback to the creator of these exercises.

6. Enjoy.

Installation and usage

1. Make sure you have node.js (and yarn if you prefer it over npm) installed on your machine.

2. Start by opening exercises/exercise-00/index.ts.

3. Once done with the exercise, proceed to the next one.