JavaScript implementation of Cap URN (Capability Uniform Resource Names) with strict validation and matching

Validates an IRI according to RFC 3987

A generational cache with strict entry-count limits and payload validation.

Wrap zod validation errors in user-friendly readable messages

An evented streaming XML parser in JavaScript

This package provides utilities for creating schema for different types, along with serialization information.

Semantic probe engine for MCP servers: handshake, strict validation, schema snapshot & drift.

Lightweight audit events for Node.js: startTracevault for PostgreSQL with named scopes, integrated read API, and strict validation.

Additional and strict validation of OpenAPI documents in context of @egomobile/http-server.

React Hook Form validation resolvers: Yup, Joi, Superstruct, Zod, Vest, Class Validator, io-ts, Nope, computed-types, TypeBox, arktype, Typanion, Effect-TS and VineJS

An evented streaming XML parser in JavaScript

Specify properties for which a variable, function, keyword or value must be used

A highly customizable React component for international phone number input with built-in country detection, strict validation, and zero runtime dependencies.

Typescript tools that help with migration to the strict mode

A strict ISO 8601 (RFC 3339) datetime validation regex with full calendar correctness (leap years, day/month limits, and timezone validation). Includes a comprehensive node:test suite.

Reusable model provider adapters and streaming runtime from OpenClaw

Testing utilities for Agent-First Development

JSON Safe Parser & Schema Validator

Performant, flexible and extensible forms library for React Hooks

TypeScript-first schema declaration and validation library with static type inference