The TypeScript Playground for Rapid Prototyping
❯Generics✕
❯Keyof✕
class Greeter<T> {
greeting: T;
constructor(message: T) {
this.greeting = message;
}
greet() {
return this.greeting;
}
}
Explore TypeScript, run code with instant results, see type information, install NPM packages and much more.
Platforms
Latest version: 2.7.3
Made for TypeScript tinkerers
RunJS makes it easy to try out new ideas before implementing them into your project.
❯Concat✕
I wish I had RunJS when I was a student [at] FlatironSchool. Awesome way to learn JavaScript and TypeScript fundamentals. Also perfect for exploring new libraries.
Eden
❯Fetch✕
With access to both Node and Browser APIs, RunJS is a very versatile environment to tinker in.
RunJS is a fantastic tool for prototyping and testing JavaScript and TypeScript code.
Mathew Layton
NPM integration makes trying out new libraries quick and easy.Premium
❯Lodash✕
❯Redux✕
Just discovered RunJS and it's a game changer! Much better than opening VSCode, creating a test.js file and running 'node test.js'. 😅
Maxim Orlov