@matatbread/typia NPM

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 assertGuard<T>(input: unknown): asserts input is T;
export function validate<T>(input: unknown): IValidation<T>; // detailed

// JSON FUNCTIONS
export namespace 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
}

// LLM FUNCTION CALLING SCHEMA
export namespace llm {
  // application schema from a class or interface type
  export function application<App, Model>(): ILlmApplication<Model>;
  // structured output
  export function parameters<P, Moodel>(): ILlmSchema.IParameters<Model>; 
  export function schema<T, Model>(): ILlmSchema<Model>; // type schema
}

// PROTOCOL BUFFER
export namespace protobuf {
  export function message<T>(): string; // Protocol Buffer message
  export function assertDecode<T>(buffer: Uint8Array): T; // safe decoder
  export function assertEncode<T>(input: T): Uint8Array; // safe encoder
}

// RANDOM GENERATOR
export function random<T>(g?: Partial<IRandomGenerator>): T;

Typia is a transformer library supporting below features:

Super-fast Runtime Validators
Enhanced JSON schema and serde functions
LLM function calling schema and structured output
Protocol Buffer encoder and decoder
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