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export class HelloWorld {
static hello(name = 'World'): string {
return `Hello, ${name}!`
}
}
Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.
Convert color codes, as used on resistors, to a numeric value.
Output the nursery rhyme 'This is the House that Jack Built'.
Given a number n, determine what the nth prime is.
Typescript is a modern and constantly evolving open-source language supported by Microsoft.
TypeScript is used by many libraries and frameworks, and integrates with JavaScript code as well.
Typescript flexible typing system lets you describe what to expect, supporting gradual adoption.
Use prototype-based, object-oriented, functional, or declarative programming styles, and more.
TS's JavaScript integration is handled by the language itself, enabling its tools and features.
The large number of users makes it easy to find answers, documentation, and libraries.
Every language has its own way of doing things. TypeScript is no different. Our mentors will help you learn to think like a TypeScript developer and how to write idiomatic code in TypeScript. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in TypeScript - they'll help you discover the things you don't know that you don't know.
Learn more about mentoring
The TypeScript track on Exercism has 97 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.
See all TypeScript exercises
The best part, it’s 100% free for everyone.