A TypeScript formatter restructures TypeScript code with K&R brace style, proper type annotation spacing, and clean indentation. Whether you are formatting auto-generated TypeScript, cleaning up interface definitions, or prettifying async/await patterns before a code review, this tool handles TS-specific syntax without needing Prettier installed locally.
Formatted TypeScript will appear here...Example Snippets
How to Use the TypeScript Formatter
TypeScript generated by code tools, copied from documentation, or written quickly often has inconsistent indentation and spacing around type annotations. A TypeScript formatter applies K&R brace style, correct type annotation spacing, and consistent indentation — making TS interfaces, generics, and async patterns readable before code review.
Step 1: Paste Your TypeScript
Copy your TypeScript code — an interface, class, function, or module — and paste it into the input area. The formatter handles interface declarations, generic types, arrow functions, async/await patterns, enums, type aliases, and decorators.
Step 2: Choose Indentation
Select 2 spaces, 4 spaces (default), or tabs. Most TypeScript projects use 2 or 4 spaces — check your .editorconfig or prettier.config.js for your project's convention. Click Format TypeScript to apply.
Step 3: Copy or Download
The formatted TypeScript appears with syntax highlighting. Click Copy for clipboard access or Download to save as a .ts file.
TypeScript Formatting Conventions
TypeScript follows JavaScript formatting conventions with additional rules for type syntax: spaces after colons in type annotations (name: string), spaces around union/intersection operators (A | B, A & B), and arrow spacing in arrow functions. K&R brace style (opening brace on same line) is standard in virtually all TypeScript projects.
FAQ
Is the TypeScript formatter free?
Yes, completely free with no signup required. Format unlimited TypeScript code in your browser.
Is my TypeScript code safe?
Yes. All formatting runs locally in your browser. Your TypeScript code is never sent to any server.
Does the formatter handle TypeScript type annotations?
Yes. The formatter properly spaces type annotations (: Type), generic parameters (<T>), union types (A | B), intersection types (A & B), and optional parameters (?:).
Can I format minified TypeScript?
Yes. Paste any TypeScript — whether a single long line or poorly indented — and the formatter will restructure it with consistent K&R brace style and proper indentation.
Does the formatter support TypeScript interfaces and enums?
Yes. The formatter correctly handles interface declarations, type aliases, enum blocks, namespace declarations, and decorator syntax.
What is the difference between this and Prettier?
This tool provides instant in-browser formatting without any installation. Prettier is the full production tool with opinionated options. Use this for quick formatting or when you cannot run Prettier locally.