TypeScript & React TSX Code Formatter

100% Client-Side Private — Zero Server Uploads

Prettify messy TypeScript interfaces, complex generic types, and React .tsx components locally in your browser using the Prettier TypeScript AST parser.

Dedicated Formatters:All-in-One Code Formatter TypeScript / TSX Formatter Python PEP 8 Formatter SQL Formatter JSON Formatter

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Raw Input Code

interface OrderItem{id:string;unitPrice:number;quantity:number;discountRate?:number;}
export function computeInvoiceTotal(items:readonly OrderItem[],vatRate:number=0.1):{net:number;vat:number;gross:number}{
const net=items.reduce((acc,item)=>acc+item.unitPrice*item.quantity*(1-(item.discountRate??0)),0);
const vat=Number((net*vatRate).toFixed(2));return{net,vat,gross:Number((net+vat).toFixed(2))};}

Formatted Output

How do I use TypeScript & React TSX Code Formatter?

Paste your unformatted TypeScript (`.ts`) or React (`.tsx`) code into the Raw Input Code editor (TypeScript mode is pre-selected by default).

Choose your preferred indentation width (2 Spaces standard or 4 Spaces) and maximum line print width (80, 100, or 120 characters).

Prettier's TypeScript AST parser validates your syntax in real time—highlighting exact line and column numbers if a bracket or type annotation is malformed.

Click 'Copy' to copy the formatted TypeScript code to your clipboard or 'Download' to save it as `formatted_code.ts`.

What features does TypeScript & React TSX Code Formatter offer?

Full support for TypeScript 5+ syntax: `interface`, `type` unions, generics, `satisfies`, `as const`, and JSX/TSX

Configurable 2-space or 4-space indentation and 80/100/120 character line-wrapping width

Instant AST syntax validation with exact line and column error diagnostics

Zero server uploads — proprietary enterprise TypeScript code never leaves your machine

How does Prettier format TypeScript via Abstract Syntax Tree (AST) parsing?

Unlike regex-based code beautifiers that break on nested TypeScript generics (`Record<string, Array<Promise<T>>>`) or JSX tags, Prettier parses your source string into a full TypeScript Abstract Syntax Tree (AST), discards all original erratic whitespace, and reprints the tree from scratch according to deterministic line-length rules.

Prettier AST Formatting Pipeline

Source String (.ts/.tsx) → TypeScript ESTree Parser → Intermediate Doc IR → Line-Width Printer (80/100/120 cols)

Guarantees 100% semantic equivalence: variable names, runtime logic, and type annotations remain untouched while layout is standardized.

TypeScript Formatting Rules Applied Automatically
TypeScript Construct	Unformatted Input	Formatted Prettier Output
Interface Declarations	interface User{id:number,name:string}	Multi-line block with trailing semicolons and 2-space indent
Union & Intersection Types	type Status='idle'\|'loading'\|'success'\|'error'	Normalized spacing around `\|` and `&` operators; wraps cleanly past printWidth
Arrow Functions & Generics	const fn=<T>(x:T):T=>x	Consistent parentheses, colon spacing (`x: T`), and return type alignment
React TSX Props	<Button variant='primary' onClick={()=>{}}>Save</Button>	Double-quoted JSX attributes and multi-line prop wrapping when exceeding line width

How is TypeScript & React TSX Code Formatter used in real-world workflows?

Full-Stack TypeScript & React Engineers

Cleaning Generated API Types & LLM Code Snippets

Format compact TypeScript interfaces generated by OpenAPI/Swagger tools, GraphQL codegen, or AI assistants before pasting them into your repository.

Security & Frontend Auditors

De-Obfuscating Single-Line TypeScript/JavaScript Bundles

Expand compressed single-line functions and complex conditional ternary chains into readable multi-line blocks entirely offline.

Frequently Asked Questions about TypeScript & React TSX Code Formatter

Does this TypeScript formatter support React `.tsx` components?

Yes. Prettier's TypeScript parser natively supports both pure `.ts` files and React `.tsx` JSX syntax, including generic components and typed event handlers.

Will formatting my TypeScript code alter its runtime behavior?

No. Prettier is an AST pretty-printer that only adjusts whitespace, indentation, line breaks, quote style, and optional semicolons. The underlying AST and compiled JavaScript behavior remain identical.

Why did the formatter show a SyntaxError banner?

Because Prettier builds a complete Abstract Syntax Tree before printing, any missing closing brace `}`, unmatched generic `<T>`, or invalid keyword will trigger a precise syntax error showing the exact line and column to fix.

Is my company's TypeScript code transmitted to any server?

Never. Prettier and its TypeScript/ESTree parser plugins execute 100% locally inside your browser tab.

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