JSPM

Swagger 2.0 and OpenAPI 3.0 parser and validator for Node and browsers

Provides a fast, pretty robust e-mail validator. Only checks form, not function.

Express middleware for the validator module.

Validate and visualize dependencies. With your rules. JavaScript, TypeScript, CoffeeScript. ES6, CommonJS, AMD.

Generate Zod schemas from Drizzle ORM schemas

A tiny javascript type testing tool

Check if a string is a scoped npm package name

Validate an email address according to RFCs 5321, 5322, and others

User validations for npm

A beautiful command-line prompt for node.js

Featureful configuration management library for Node.js (nested structure, schema validation, etc.)

A JavaScript plugin for entering and validating international telephone numbers

Painless forms for Vue.js

Hash a stream of data, then validate

Declarative validations for JavaScript

React Hook Form error message component

React Hook Form dev tool to help debugging forms

React component to provide validation states to form fields

Validation rule for GraphQL query complexity analysis

check if a string is a valid JSON string without using Try/Catch

A React component for input text field

A simple and composable way to validate data in JavaScript (and TypeScript).

Validation for your environment variables

Swagger 2.0 and OpenAPI 3.x parser and validator for Node and browsers

Detect Filetype by bytes

Runtime validation for static types

Blazing fast input validation and transformation ⚡

validates style objects by ensuring they only have valid keys

cron-validate is a cron-expression validator written in TypeScript.

A json validator that has an option to check for duplicated keys

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Validates cron expressions

Contains JavaScript & TypeScript object models for Microsoft Power BI JavaScript SDK. For each model there is a TypeScript interface, and a validation function to ensure and object is valid.

Swagger 2.0 and OpenAPI 3.0 command-line tool

Validate JSON

Client-side form validation made easy

A temporary custom copy of https://github.com/csstree/csstree

GitHub’s GraphQL Schema with validation. Automatically updated.

Generate fast-check arbitraries from Zod schemas.

Effortlessly convert your JSON Object to JSON Schema, Mongoose Schema, or a Generic template for quick documentation / upstart.

Typescript API client with autocompletion and zod validations

Customizable and hackable json-validator and json-schema utilities for traversal, data generation and validation

Utilities to format and customize Zod error messages

Simple validations for node and the browser.

vee-validate integration with zod schema validation

Dead simple fluent JavaScript validation library

Core module of JSON Forms

Form Validation for Vue.js

Validate postcodes based on country

A set of opinionated helpers built on top of the Constraint Validation API

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

Creates Zod types from JSON Schema at runtime

Joi extension for dates

Conform view adapter for react

Validate a response according to an openapi schema.

Form data validation library for Node.js

A joi validation middleware for Express.

TypeScript compatible runtime type system for IO validation

Schema for data modeling & validation

Conform helpers for integrating with Zod

Extends Zod with metadata

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

Validate any Bitcoin address - P2WSH, P2WPKH, P2SH, P2PKH - Mainnet & Testnet

The framework agnostic core of FormKit

Making SvelteKit forms a pleasure to use!

Quick and easy Smarty address validation.

Validate JSON

Validates password according to flexible and intuitive specifications

Build industry leading Vue forms 10x faster.

Utility to wrap a FormKitNode in a dependency tracking observer proxy

Development tools for FormKit.

express-validation is a middleware that validates a request and returns a response with errors; if any of the configured validation rules fail.

A validation module for browsers and Node.js to validate credit card numbers against the luhn algorithm.

Runtime type-checking for JavaScript.

Shared utilities for FormKit packages

The goal of the package is to provide lightweight tools for validating strings denotings dates and time. It includes ISO 8601 datestring validation, simple YYYY-MM-DD date validation and time validation in hh:mm:ss.fff format. See details in readme.

Strict URL sanitization with security-focused validation

Clean featherweight state validation

ESLint plugin that validates data using JSON Schema Validator.

Validation plugin for FormKit

The fastest JS validator library for NodeJS

Generates zod schemas from Prisma models with advanced validation

Commonly shared types for FormKit

Forms utilities for PrimeUI Libraries

XML-Tools Common Utilities

Validation rules for FormKit

Azure OpenAPI Validator

Azure OpenAPI Validator

Azure OpenAPI Validator

allows easy type enforcement for all JS types objects and classes. it is also extensible and provides simple to use type checks for your own custom classes and types

Reusable adapter for class-validator classes

A fast Luhn algorithm for validating credit cards

Validate GraphQL fields

Validates mint.json files

Validation library inspired by Laravel's Validator

Internationalization layer for FormKit.

Universal adapter for schema validation

Build functions in standardized containers.

vee-validate integration with yup schema validation

Official vee-validate nuxt module

Validate OpenApi specifications against their JSON schema

Build a Yup schema object to validate models from a domain model schema (JSON or GraphQL)

Assertion library for form validations

Build, Validate, Route, Authenticate and Mock using OpenAPI definitions. Framework-agnostic

A simple wrapper around class-transformer and class-validator which provides nice and programmer-friendly API.

openapi-io-ts core package

High-level validation library for Node.js (used in Waterline)

Type guards

Useful proptypes for react components

Validate HTML colors by 'name', 'special name', 'hex', 'rgb', 'rgba', 'hsl', 'hsla', 'hwb', 'lab' or 'lch' values

Parse your environment with Zod schemas

Validates if a value is a nonnegative integer.

Validate object properties in javascript.

$merge and $patch keywords for Ajv JSON-Schema validator to extend schemas

JSON/CJSON/JSON5 parser, syntax and schema validator and pretty-printer.

Postal Codes

Vue and Nuxt 2/3 isomorphic JSON editor, viewer, formatter and validator.

The parser package for the Powertools for AWS Lambda (TypeScript) library.

Schema-Inspector is a powerful tool to sanitize and validate JS objects.

OpenAPI code generation tool with validation powered by io-ts

Adds a phone number validation check to yup validator using google-libphonenumber.

Validates if a value is a string primitive.

Validates if a value is a number primitive and an integer.

A syntax sugar tool around Node fetch() API, tailored to work with TypeScript and response validators

Yup, dead simple password validation.

Add-on to jQuery Validation to enable unobtrusive validation options in data-* attributes.

Validate cron expressions

Validates if a value is a number primitive, excluding NaN.

Validates if a value is a Buffer object.

Validates if a value is array-like.

Validate Markdown frontmatter YAML against an associated JSON schema — remark-lint rule plugin

Validates if a value is matrix-like.

An OpenAPI v3.0 development workflow assistant

Joi extension for dates

[](https://github.com/webcat12345/ngx-intl-tel-input/actions/workflows/ci.yml) [![GitHub Pages](https://img.shields.io/badge/Demo-blue?logo=

Provides a fast company / work email validator by checking whether the email domain is in the free email provider list.

build schema with validators for each endpoint

✅ Vite plugin for validating your environment variables

Zod schema generator plugin for Kubb, creating type-safe validation schemas from OpenAPI specifications for runtime data validation.

A package for detecting all duplicated property keys of a JSON string.

Validates if a value is a positive integer.

Put non-empty strings into arrays, turn empty-ones into empty arrays. Bypass everything else.

Type signature parser for typify

Starlight plugin to validate internal links.

Card type definitions and methods for creditcards

JSON Schema fluent API

Create an error from the result of validate-glob-opts

Ember computed property based validation library

Elegant and battle-tested validation library for type-safe input data for TypeScript

Utility methods for formatting and validating credit cards

Validate JSON

Backstage entity validator library

Validates if a value is ndarray-like.

Validate openapi documents.

Test if a value is an Error object.

Express middleware to validate requests using zod schema's.

Skema provides a handy & composable way to validate / transform / purify the input data.

Validate your forms, frontend, without writing a single line of javascript!

Yaml input field with validation and syntax highlighting as React Component

Backstage entity validator

allows easy type enforcement for all JS types objects and classes. it is also extensible and provides simple to use type checks for your own custom classes and types

Stream-based library for parsing and manipulating subtitles

Standard assertion utilities.

A string formatter and validator based on masks

A form input builder and validator for React

GTIN (UPC, EAN, ITF, etc.) utilities.

Changesets for your local state

Minimal JavaScript type checking library

Schema Validation with typescript type inference.

An Express middleware to validate requests against JSON Schemas

Form component and utils for easy form validation in remix

validate express application inputs and parameters using joi

Simple validations with redux-form / react-final-form

Generate Typebox schemas from Drizzle ORM schemas

Adds a phone number validation check to yup using libphonenumber-js.

Core validator component for react forms.

Configurable, input validated routing for koa.

FormKit Pro — Form inputs and tools for high quality forms.

Validate html using validator.w3.org/nu og html-validate

Core utility for Felte's integration with front-end frameworks

A library for generating safe, legit and random URL-safe IDs

A Pothos plugin for adding schema based validation

Adds pattern matching, optional properties, and several other helpers and types, to io-ts.

Simple validator for forms designed with material-ui v1/v3/v4/v5 components.

A command line JSON Schema validator that supports many file formats. Fork of jessedc/ajv-cli.

Validate your BPMN diagrams based on configurable lint rules

A React Component to display the success or failure of password strength rules, ideal for registration or password reset forms.

Express middleware to validate request based on an OpenAPI 3 document

A lightweight framework and utility for building powerful forms in React applications

Optional features you can add to your FormKit inputs.

Converts json-schema to Joi schema.

Validation and warning infrastructure for Sanity projects

A Pothos plugin for adding argument validation

Sanely validate email addresses, based on HTML5's definition of email addresses

UK Postcode helper methods

Schema validator for yaml files

Standard Number Validation

Enhanced type safety via validation for all route params in React Router v7.

An object shape validation utility.

Fast input validation middleware using OpenAPI 2.0 (formerly Swagger) and 3.0 definitions file and ajv

A client for the App Store Server API

Wrapper for `xmllint`. Easy validation of XML. XML Schemas and DTDs supported. Zero dependencies.

Core package of uniforms.

Check password strength

Validate element templates based on JSON Schema

Reactive MobX Form State Management

```diff -Maintener wanted ``` Validation for REST Services built with [node-restify](https://github.com/mcavage/node-restify) in node.js

Capture form validation back from the browser

Text input mask for React Native on iOS, Android and web. Synchronous and easy formatting without hustle

An extensible form library for Svelte

A (XSD) schema validator for nodejs

angular2 validation

Powerful object and string validation in Javascript.

html-validate integration for Nuxt

Plugins for zodios

An easy way to validate forms using back end logic

An Angular Material package for entering and validating international telephone numbers. It adds a flag dropdown to any input, detects the user's country, displays a relevant placeholder and provides formatting/validation methods.

Thin wrapper around joi that defaults to stricter validation.

Validate the type of arguments passed through the function.

A Typescript framework to help you get an API server up and running with I/O schema validation and custom middlewares in minutes.

A TypeScript Framework on top of Express

Validator functions for many types of input, intended for use with express

Type check values: `is.string('🦄') //=> true`

Check if the given value is of the particular type or types.

Unquoted JavaScript property name validator

[![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url]

A TypeScript Framework on top of Express

Utils library to use with the Smarty Javascript SDK

An API wrapper for the NeverBounce API

Lightweight validator supporting Language Independent Validation Rules Specification

Typescript express server

Fela plugin to validate style objects

Forked from https://github.com/webcat12345/ngx-intl-tel-input

Helper to simplify validating Formik values with Zod

Validates if a value is a JavaScript object.

The easiest way to build forms in Vue.

Validation and control key generation for credit cards (and more) using Luhn algorithm

Common error classes and utility functions

Node.js middleware to validate Host and Referer headers in HTTP requests and protect against DNS rebinding attacks.

Conform helpers for integrating with yup

XML validation APIs

.secretlintrc config validation library

XML constraints validations

Persist and rehydrate a Formik form

Convert Ethereum address to a checksummed address

Joi validation for password complexity requirements.

Validator of HTTP transactions (JavaScript implementation)

Modern, simple, lightweight (~5kb gzip) form validation library written in Typescript, with no dependencies (no JQuery!). Support a wide range of predefined rules, async, files, dates validation, custom error messages and styles, localization. Support wri

Validates if a value is a nonnegative integer array.

A regular expression that only matches a valid Github username