TypeScript Formatter

Definition

Format TypeScript in the browser. On JSON Nova, the workflow runs entirely in your browser with no server processing of your data. Suitable for sensitive payloads, large files, and offline use as a PWA.

Format TypeScript in the browser. Private. For dev workflows and asset prep. See also JSON to CSV, JSON Formatter, and JSON Validator.

Run everything in your browser with Monaco Editor on JSON Nova—100% client-side, no server uploads, large-file friendly. Install as a PWA for offline use.

Guide and tips

Developer guide

Short, practical notes—workflow, common mistakes, and pro tips—with links to related tools.

Format TypeScript consistently

Format TypeScript in the browser. Private. For dev workflows and asset prep.

All processing stays in your browser. Paste production-shaped samples without uploading secrets.

Editor-native behavior

Match project style (tabs vs spaces, width) before you commit.

Browse more in the [tools directory](/tools).

Common mistakes

Formatting minified production bundles you should not rewrite by hand—use the right tool for source files.

Mixing formatter output with linter rules that disagree (ESLint, Prettier conflicts).

Pasting secrets into shared sessions; keep tokens out of examples.

Pro tips

Format on save in the IDE; use this page for quick one-off fixes and reviews.

Browse more in the [tools directory](/tools).

Quick reference

What is this TypeScript tool?

Formats **TypeScript** locally. Useful before deploy or code review.

Use cases

  • Smaller assets (consistent style).
  • Readable TypeScript in docs.

Common errors

  • Syntax errors block format.
  • Very large files may be slow.

Best practices

Validate in your build. Pair with related language formatters in the same hub.

Performance and privacy

Performance

Leverage the power of Monaco Editor and Web Workers. Our toolkit is optimized for files up to 50MB, providing real-time transformations without lag.

Privacy

Your data stays local. Conversions and formatting run 100% in your browser—nothing is sent to our servers.

Frequently asked questions

FAQ

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Does it handle advanced TypeScript features?

Yes, including conditional types, mapped types, template literal types, and the latest TS 5.x features.

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Will it modify type annotations?

No, the formatter only changes whitespace and line breaks. Type semantics remain identical.

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Is it compatible with ESLint?

Yes. It follows Prettier conventions designed to work seamlessly with ESLint code quality rules.

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Is my data private?

Yes. All processing is 100% local. We never store or transmit your source code.

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Does it support decorators?

Yes, both legacy experimental decorators and the modern TC39 decorators are supported.

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What is the processing limit?

We support TypeScript files up to 50MB for real-time local formatting.

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Can I use it with TSX?

Yes, TypeScript React (TSX) files are fully supported and beautifully formatted.

More tools

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