TypeScript Compiler
Last updated: June 1, 2026EditorOnline TypeScript compiler — compile & run TS.
This online TypeScript compiler transpiles and runs your TypeScript directly in your browser — types are stripped with Sucrase and the JavaScript executes in a sandbox, with a VS Code-style Monaco editor and a live console. Click Run to see real console output (not just type-checking), or ask the built-in AI to write or fix code. No install, no sign-up, and nothing is uploaded.
How to use TypeScript Compiler
The TypeScript Playground compiles and runs TypeScript directly in your browser, with a VS Code-style Monaco editor and a live console. Types are stripped with Sucrase and the result runs in a sandbox. Includes a write-code-with-AI helper. Nothing is uploaded.
- 1Write TypeScript in the editor.
- 2Click Run to compile and execute it.
- 3Read the console output, or ask the AI to write or fix code.
Compile + run
TypeScript is transpiled and executed instantly in your browser.
VS Code editor
Monaco brings TypeScript highlighting and a familiar editor.
Write code with AI
Describe a task and the AI writes the TypeScript for you.
Run TypeScript online
Write TypeScript, click Run, and see it actually execute with console output — not just a type-check. There is no tsconfig, no npm and no Node.js setup; it transpiles and runs in your browser.
Try TypeScript features (types, generics, interfaces)
Experiment with interfaces, generics, enums and union types and watch the runtime behaviour instantly. A quick way to confirm how a piece of TypeScript actually runs.
Test a snippet without installing Node
Paste a function or module and run it on the spot — ideal when you just want to check logic and don't want to spin up a local TypeScript project.
Write TypeScript with AI
Describe the task in plain English and the built-in AI writes the TypeScript for you, ready to run and refine in the editor.
TypeScript Compiler — frequently asked questions
Is this TypeScript playground free?
Yes — compiling and running is completely free. The optional AI helper uses a credit per request.
How is the TypeScript compiled?
Types are stripped with Sucrase (a fast transpiler) and the resulting JavaScript runs in a sandboxed iframe.
Does it type-check my code?
It transpiles and runs your code; the Monaco editor shows type hints, but it doesn't block running on type errors — it focuses on fast execution.
Is my code uploaded?
No — compilation and execution happen entirely in your browser.
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Send it to someone who needs it or save the link for later.
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