Typia

// RUNTIME VALIDATORS
export function is<T>(input: unknown): input is T; // returns boolean
export function assert<T>(input: unknown): T; // throws TypeGuardError
export function validate<T>(input: unknown): IValidation<T>; // detailed
export const customValidators: CustomValidatorMap; // can add custom validators

// JSON
export function application<T>(): IJsonApplication; // JSON schema
export function assertParse<T>(input: string): T; // type safe parser
export function assertStringify<T>(input: T): string; // safe and faster
    // +) isParse, validateParse 
    // +) stringify, isStringify, validateStringify

// MISC
export function random<T>(g?: Partial<IRandomGenerator>): Primitive<T>;

Typia is a transformer library supporting below features:

• Super-fast Runtime Validators
• Safe JSON parse and fast stringify functions
• JSON schema generator
• Random data generator

Note

• Only one line required, with pure TypeScript type
• Runtime validator is 20,000x faster than class-validator
• JSON serialization is 200x faster than class-transformer

Sponsors

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Guide Documents

Check out the document in the website:

🏠 Home

• Introduction
• Setup
• Pure TypeScript

📖 Features

• Runtime Validators
  • is() function
  • assert() function
  • validate() function
  • Comment Tags
• Enhanced JSON
  • stringify() functions
  • parse() functions
  • JSON Schema
• Random Generator

🔗 Appendix

• Utillization Cases
  • NestJS
  • Prisma
  • tRPC
• ⇲ Benchmark Result
• ⇲ dev.to Articles