TypeScript 5.x Beautifier, Minifier & Type Structure Validator

TypeScript Formatter

Beautify, format, validate, and minify TypeScript code with custom type interface preservation, generics handling, AST syntax checks, and safe sandboxed execution console.

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Input TypeScript Code
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0 chars
TypeScript Structure Valid: No syntax errors detected.
Valid TS 5.x
Lines:0|Input Chars:0|Output Chars:0|Interfaces:0|Type Aliases:0|Generics (<T>):0|Classes:0|Comments:0
TypeScript 5.x Formatting Standards & Developer Specification Reference
Type Annotations & Interfaces

Preserves type annotations (name: string), optional properties (email?: string), interface extensions (interface Admin extends User), and type assertions without stripping types.

Generics & Constraints

Generic parameter definitions (<T extends { length: number }>), generic type defaults (Container<T = string>), and mapped types are formatted cleanly without JSX confusion.

Execution Sandbox Security

Console execution preview strips type annotations for execution inside a sandboxed <iframe sandbox="allow-scripts"> without exposing parent cookies or local storage.

Enums & Type-Only Imports

String enums (enum Direction { Up = 'UP' }), const enums, and type-only module statements (import type { User }) remain preserved.