Share
Real TypeScript compiler in the browser — see compiled JS, type errors, and AST live.
(compile output will appear here)
Real typescript compiler. Compiles + type-checks live as you type. JSX toggle switches to .tsx input. Note: full lib.dom.d.ts / lib.es*.d.ts isn't loaded — most type errors still surface but DOM and built-in types may show as unknown.
Write TypeScript in your browser, see compiled JavaScript and type-check errors live. Pick the target (ES2015 → ESNext), toggle strict mode, enable JSX, choose module format. Output panel switches between compiled JS, type errors, and AST. Everything runs locally with the real TypeScript compiler.
Share this tool
See how Babel transforms your JS/JSX/TS — pick presets, plugins, and target, side-by-side.
Encode and decode Base64 strings instantly.
See your public IP address plus full location, ISP, ASN, timezone, coordinates, and more.