JSPM

A simple and lightweight TypeScript type guard library for runtime type validation.

Collection of JS regular expressions.

A comprehensive Express middleware designed to protect your No(n)SQL queries from injection attacks by sanitizing request data. This middleware provides flexible sanitization options for request bodies, parameters, and query strings.

A TypeScript/JavaScript library for rule-based entity validation with boundary checking for strings, numbers, dates, enums, objects, and arrays.

A flexible and powerful validation library for Node.js that allows you to validate JavaScript objects through rule-based validation.

AutoMapper

Readable regex transformations, validations, and utilities with both static and chainable API.

validate dynamic schema

Aid provides a structured and type-safe way to interact with LLMs.

Professional JavaScript utility to generate flexible and accurate regex patterns for data validation

A modern TypeScript validation library designed around familiar interface syntax and powerful conditional validation. Experience schema validation that feels natural to TypeScript developers while unlocking advanced runtime validation capabilities.

Joi SQL Injection Validator is a lightweight npm library designed to validate SQL injection attacks in user input using Joi, a popular validation library for Node.js. This library provides a set of pre-built Joi validation schemas for various types of use

A collection of useful regular expressions.

🚀 Lightweight, fast & flexible request validation library for Node.js/Express/Next.js with TypeScript support. Features 20+ validation rules, database integration, file upload validation, and zero external dependencies. Perfect for API validation, form v

A dynamic rule-based validation engine for Excel and CSV files

A lightweight validation library with easy-to-use functions for email, phone number, and password validation

A wrapper for api.email-validator.net

SpreadJS sheets data validation module

SpreadJS sheets data validation module

Simple masking solution for any frontend as well as nodejs. Provides composable for Vue3

A powerful library for comparing JSON objects with support for deep comparison, regex validation, and customizable options

SpreadJS sheets data validation module

A wrapper for the address-validator.net API

Production-ready n8n node for Nextcloud Tables – full API coverage with advanced filters, multi-column sorting, CSV import, and professional data validation

Production-Ready n8n Node für Nextcloud Tables - Vollständige API-Abdeckung mit erweiterten Filtern, Multi-Column-Sorting, CSV-Import und professioneller Datenvalidierung

A minimal and robust form validation library

A flexible and extensible schema validation library for JavaScript objects, designed for REST APIs and beyond. Features include type casting, data transformation, and a pluggable architecture for custom rules.

A comprehensive validation library for various data types.

An intelligent JSON processing workflow system with improved error handling and configuration

## Overview A TypeScript decorators-based API for defining Data Transfer Object (DTO) classes, types, and parsers. Simplifies schema validation and type enforcement using intuitive decorators and TypeScript classes.

A lightweight JavaScript utility for type checking.

MongoDB query sanitizer for Fastify

智能的JSON处理工作流系统，提供自动化监控、验证和转换功能

A versatile and customizable file upload and processing component for React applications. Supports CSV, Excel, and various data formats with advanced data transformation, validation, and visualization capabilities. Ideal for building robust data-driven UI

A wrapper for the phone-validator.net API

The only validation library - with flexible regex - you need.

DecoVal is a decorator-driven validation pattern that allows you to add validation rules directly to the properties of TypeScript classes, simplifying data control and increasing code readability and reusability.

powerful TypeScript validation library built on the robust foundation of Effect combining exceptional type safety, high performance, and developer experience. Taking inspiration from Effect's functional principles, VEffect delivers a balanced approach tha

Validation library for JavaScript and TypeScript

Library for checking js object property types

**bguard** is a powerful, flexible, and type-safe validation library for TypeScript. It allows developers to define validation schemas for their data structures and ensures that data conforms to the expected types and constraints.

An npm package for validating conditions and response objects. Ensure data integrity and reliability in your applications with easy-to-use validation functions

~2.7kB JavaScript JSON schema validation with TypeScript type inference.

Node library for data validation

A collection of JavaScript helper functions to be used in conditional logic within projects

Validate api request against api schema

Persian rules in yup

A runtime data validator in TypeScript with advanced type inference, built-in validation functions, and seamless integration for server and client environments.

Dynamic, rule-based validation for JS/TS objects with support for strings, numbers, dates, booleans, arrays, and custom conditions.

A versatile data validation library for RESTful APIs, supporting a wide range of data types and validation rules.

The most rigorous, up-to-date library for validating Nigerian mobile numbers. Fully NCC-compliant, and security-focused, with enterprise-grade features to prevent the business risks of validation failures in regulated industries.

🔢 JavaScript range validation library - Extend Number and BigInt prototypes with powerful range checking, validation, and manipulation utilities. Perfect for form validation, game development, and scientific computing.

A lightweight and customizable field validation library using Joi, inspired by Laravel's validation rules. Simplifies data validation with intuitive rule-based syntax.

Data validation module

A strongly-typed, chainable validation library for TypeScript. Craft intricate validation rules with Fluent API goodness. Go beyond boilerplate and embrace customizability.

The `validator-helper` is a lightweight JavaScript library designed to simplify data interaction and validation. It streamlines the validation processes and provides essential helper functions to enhance efficiency in your projects.This package provides a

The validation of data is an essential part of an application, used in api endpoints, input data validation, ... just to name a few examples. Most commonly in nodejs the express validators, joi validators, or class validators are used. This library is a l

A world-class Joi validation error formatter for structured, user-friendly error handling.

A simple validation package for common data types.

Validador de Dados JSON para NodeJS

Validates that the second date field is greater than the first date

The `validator-helper` is a lightweight JavaScript library designed to simplify data interaction and validation. It streamlines the validation processes and provides essential helper functions to enhance efficiency in your projects.This package provides a

The `kp-validator` is a lightweight JavaScript library designed to simplify data interaction and validation. It streamlines the validation processes and provides essential helper functions to enhance efficiency in your projects.This package provides a lig

Provides a convenient way to define models and their associated fields for encoding and decoding various data formats.

procheck is a powerful CSV validation tool that automatically detects headers and applies configurable validation rules for common lead data fields. It ensures data accuracy and generates separate output files for valid and invalid records.

JS validation utility

A RuffLIB library for succinctly validating JavaScript values.

check value is string or not

Library for checking js object property types

Human-friendly and powerful data validator library utility for JavaScript

Minimal validation library for the brave

The `kp-validator-helper` is a lightweight JavaScript library designed to simplify data interaction and validation. It streamlines the validation processes and provides essential helper functions to enhance efficiency in your projects.This package provide

Akar.js is a simple and lightweight schema based data-validation library.

This package is designed to assist developers in type checking and validation for various JavaScript values. It provides a collection of type-checking functions, and utilities to validate your values.

A lightweight, powerful validation library for Node.js backend development. Simplify user input validation, error handling, and data integrity in Express APIs and JavaScript applications with ease.

0 dependencies validation library

A flexible TypeScript condition checker for evaluating complex conditions against objects

A Schema-Based Runtime Data Validator for TypeScript.

A powerful TypeScript validation library for emails, IBANs, identity cards, passports, and phone numbers.

This is a package for validating request data in the express app

A data validation tool

Effortlessly send, receive, and validate JSON over streams

A shameless library for auto-correcting variable types.

A minimal, fast, and extensible data validation library built for a new era of intelligence.

A powerful and flexible Node.js input validation library.

Web worker wrapper for data-sitter validation in browsers

Miyax Validator JS - A powerful JavaScript validation library inspired by Laravel Validation Rules

A lightweight and simple validation module for JavaScript, providing essential utilities for data validation.