cloud development environment

TypeScript online coding platform

Compile and run TypeScript in a cloud workspace.

Start coding free →
about TypeScript

TypeScript in the cloud, ready in under a minute.

TypeScript is a typed superset of JavaScript, developed and maintained by Microsoft. It adds optional static typing and class-based object-oriented programming to JavaScript, then compiles down to plain JS. Static types help catch bugs early and make large codebases easier to follow. RunCode gives you a TypeScript workspace with the compiler and Node.js preinstalled, ready in under a minute.

Open a TypeScript workspace →
index.ts

What TypeScript adds to JavaScript

TypeScript extends JavaScript with a type system that checks your code before it runs. You annotate variables, function parameters, and return values with types, and the compiler catches mismatches at build time. TypeScript works with any JavaScript library or framework, including Angular, React, and Vue. It also adds interfaces, classes, and decorators, which help organize larger projects. All valid JavaScript is valid TypeScript, so you can adopt it incrementally.

Using TypeScript on RunCode

  1. Open a workspace and open the integrated terminal
  2. Write your TypeScript file (e.g. index.ts)
  3. Compile with tsc to produce a JavaScript file in dist/
  4. Run the output with node dist/index.js
  5. Or skip the compile step and use ts-node to run TypeScript directly

What you get on RunCode for TypeScript

  • TypeScript compiler (tsc) and ts-node preinstalled
  • Node.js and npm ready for installing packages
  • VS Code in your browser with full TypeScript tooling
  • A terminal for compiling, running, and debugging
  • Your git repo cloned on first boot
your cloud development solution

Built for the way developers actually work.

Create your workspace →
bash