Can I run TypeScript code online here?

Yes. This page runs TypeScript in your browser using TypeScript 5.9.3 (the real compiler, self-hosted). Nothing needs to be installed.

Is this TypeScript playground free?

Yes. The editor, runtime and examples are free to use, and no account or payment method is required.

Is my TypeScript code uploaded?

No. Code runs inside this browser tab. The sandbox blocks network access, and SkillAIVibe does not receive or store the code you type.

Free browser compiler

TypeScript online compiler

This runs the real TypeScript compiler, not a tool that strips the types and hopes. Your code is type-checked first, and a type error stops it before a single line executes, with the compiler's own message. How the sandbox works, and its honest limits, is on the code execution and security page.

TypeScript 5.9.3 (the real compiler, self-hosted)

Press Esc then Tab to move keyboard focus out of the code editor.

stdin (one value per line, read by readline())

Output will appear here after you run your code.

Not sure what to type?

A blank editor is the hard place to start. The TypeScript exercises hand you a program that already runs and ask you to change one thing.

Other playgrounds

TypeScript playground questions

Can I run TypeScript code online here?: Yes. This page runs TypeScript in your browser using TypeScript 5.9.3 (the real compiler, self-hosted). Nothing needs to be installed.
Is this TypeScript playground free?: Yes. The editor, runtime and examples are free to use, and no account or payment method is required.
Is my TypeScript code uploaded?: No. Code runs inside this browser tab. The sandbox blocks network access, and SkillAIVibe does not receive or store the code you type.