JSPM

A fast and easy to use JSON Schema validator

JSON Safe Parser & Schema Validator

Build forms in React, without the tears

URI validation functions

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

The modular and type safe schema library for validating structural data

Parser/validator for OpenAPI 3.x definitions

Convert Swagger 2.0 definitions to OpenApi 3.0 and validate

Email address and domain validation

Validate JSON

Another JSON Schema Validator

A type checking library where each exported function returns either true or false and does not throw. Also added tests.

General purpose validation library for JavaScript

For use with React PropTypes. Will error on any prop not explicitly specified.

Validates if a value is an array.

Validates if a value is a function.

Validates if a value is an integer array.

Validates if a value is a number.

Validates if a value is an integer.

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.

Function argument validation for humans

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.)

Painless forms for Vue.js

A JavaScript plugin for entering and validating international telephone numbers

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

Generate fast-check arbitraries from Zod schemas.

GitHub’s GraphQL Schema with validation. Automatically updated.

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

vee-validate integration with zod schema validation

Simple validations for node and the browser.

Form Validation for Vue.js

Dead simple fluent JavaScript validation library

Core module of JSON Forms

Validate postcodes based on country

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

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

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

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

Extends Zod with metadata

Conform helpers for integrating with Zod

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.

ESLint plugin that validates data using JSON Schema Validator.

The fastest JS validator library for NodeJS

Strict URL sanitization with security-focused validation

Clean featherweight state validation

Validation plugin for FormKit

Commonly shared types for FormKit

Forms utilities for PrimeUI Libraries

Generates zod schemas from Prisma models with advanced validation

Azure OpenAPI Validator

Validation rules for FormKit

Azure OpenAPI Validator

XML-Tools Common Utilities

Azure OpenAPI Validator

Reusable adapter for class-validator classes

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

Validates mint.json files

A fast Luhn algorithm for validating credit cards

Validate GraphQL fields

Validation library inspired by Laravel's Validator

Build functions in standardized containers.

Internationalization layer for FormKit.

Universal adapter for schema validation

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

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

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

openapi-io-ts core package

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

Type guards

Validate object properties in javascript.

Useful proptypes for react components

Parse your environment with Zod schemas

Validates if a value is a nonnegative integer.

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

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

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

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

Postal Codes

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

Validates if a value is a string primitive.

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

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

Yup, dead simple password validation.

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

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

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

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

Joi extension for dates

build schema with validators for each endpoint

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

✅ Vite plugin for validating your environment variables

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

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

Validates if a value is a positive integer.

Type signature parser for typify

Starlight plugin to validate internal links.

Card type definitions and methods for creditcards

JSON Schema fluent API

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

Ember computed property based validation library

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

Utility methods for formatting and validating credit cards

Validate JSON

Backstage entity validator library

Validate openapi documents.

Test if a value is an Error object.

Validates if a value is ndarray-like.

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

Express middleware to validate requests using zod schema's.

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

Yaml input field with validation and syntax highlighting as React Component

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

Backstage entity validator

Stream-based library for parsing and manipulating subtitles

Standard assertion utilities.

A string formatter and validator based on masks

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

A form input builder and validator for React

Changesets for your local state

Minimal JavaScript type checking library

Form component and utils for easy form validation in remix

An Express middleware to validate requests against JSON Schemas

Schema Validation with typescript type inference.

validate express application inputs and parameters using joi

Generate Typebox schemas from Drizzle ORM schemas

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

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

Core validator component for react forms.

Configurable, input validated routing for koa.

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

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

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

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

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

A Pothos plugin for adding schema based validation

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

Express middleware to validate request based on an OpenAPI 3 document

Validate your BPMN diagrams based on configurable lint rules

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

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

Optional features you can add to your FormKit inputs.

Converts json-schema to Joi schema.

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

A Pothos plugin for adding argument validation

Validation and warning infrastructure for Sanity projects

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.

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

An object shape validation utility.

A client for the App Store Server API

Core package of uniforms.

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

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

An extensible form library for Svelte

A (XSD) schema validator for nodejs

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

angular2 validation

Powerful object and string validation in Javascript.

Thin wrapper around joi that defaults to stricter validation.

html-validate integration for Nuxt

Plugins for zodios

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.

An easy way to validate forms using back end logic

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

Unquoted JavaScript property name validator

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

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

Utils library to use with the Smarty Javascript SDK

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A TypeScript Framework on top of Express

An API wrapper for the NeverBounce API

Typescript express server