TypeScript building blocks for Domain-Driven Design — entities, value objects, use cases, domain errors, domain events, and more.

Value objects — ValueObject + Result, closed-set + composite VOs, tryCreate/create, normalization.

Common Value Objects

Parses set-cookie headers into objects

Core domain logic for the invoicing system including entities, value objects, services, and events

Introduces value objects in JavaScript.

Value object base class and primitives for DDD

Domain entities and value objects (SourceFile, unified AST, Rule, Finding, Fix, Report, HealthScore). Pure, framework-free, zero dependencies.

TypeScript library for creating and validating reusable, robust, and secure Value Objects—strings, numbers, emails, UUIDs, dates, enums, phone numbers, and more. Enables immutable domain logic and centralized validation for DDD-aligned applications.

jshashtable is a JavaScript implementation of a hash table. It associates objects ("keys") with other objects ("values"). Each key is associated with precisely one value. "Objects" here is used loosely to mean any JavaScript object or value.

Parse the Forwarded header (RFC 7239) into an array of objects

Match human-quality input to potential matches by edit distance.

Parses JavaScript objects into XML

Validators, formatters and other value objects for brazillians

Library for DDD-like value objects that can be validated, serialized and represented in other programming languages as native objects with native naming.

Coleção de objetos de valores para implementação em sistemas.

Simple utility for creating immutable value objects in node

Strict, immutable value objects in JavaScript

A blazing-fast equality comparison utility for a variety of use-cases

Validators, formatters and other value objects for brazilians