JSPM

Another JSON Schema Validator

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

Format validation for Ajv v7+

Give me a string and I'll tell you if it's a valid npm package license string

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

Check if a protocol requires a certain port number to be added to an URL.

Give me a string and I'll tell you if it's a valid npm package name

A library for parsing IPv4 and IPv6 IP addresses in node and the browser.

Type check values

Utilities for determining if characters belong to character classes defined by the XML specs.

An object schema merger/validator

Performant, flexible and extensible forms library for React Hooks

String validation and sanitization

Object schema validation

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

Email address and domain validation

Wrap zod validation errors in user-friendly readable messages

A standard interface for TypeScript schema validation libraries

Ajv class for JSON Schema draft-04

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

A fast and easy to use JSON Schema validator

Build forms in React, without the tears

JSON Safe Parser & Schema Validator

URI validation functions

Convert Swagger 2.0 definitions to OpenApi 3.0 and validate

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

Parser/validator for OpenAPI 3.x definitions

The modular and type safe schema library for validating structural data

Validate JSON

Email address and domain validation

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.

Validates if a value is an integer array.

Validates if a value is a number.

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

Function argument validation for humans

Express middleware for the validator module.

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

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

Generate Zod schemas from Drizzle ORM schemas

Check if a string is a scoped npm package name

A tiny javascript type testing tool

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

User validations for npm

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

A beautiful command-line prompt for node.js

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

A React component for input text field

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

Validation rule for GraphQL query complexity analysis

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

Blazing fast input validation and transformation ⚡

Runtime validation for static types

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)

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.

Validates cron expressions

Validate JSON

Client-side form validation made easy

Swagger 2.0 and OpenAPI 3.0 command-line tool

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

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

GitHub’s GraphQL Schema with validation. Automatically updated.

Generate fast-check arbitraries from Zod schemas.

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

Dead simple fluent JavaScript validation library

Simple validations for node and the browser.

Form Validation for Vue.js

Core module of JSON Forms

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

Validate postcodes based on country

Creates Zod types from JSON Schema at runtime

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

Conform view adapter for react

Joi extension for dates

Validate a response according to an openapi schema.

Form data validation library for Node.js

TypeScript compatible runtime type system for IO validation

A joi validation middleware for Express.

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

Making SvelteKit forms a pleasure to use!

The framework agnostic core of FormKit

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

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

Development tools for FormKit.

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

Shared utilities for FormKit packages

Runtime type-checking for JavaScript.

Strict URL sanitization with security-focused validation

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.

The fastest JS validator library for NodeJS

Validation plugin for FormKit

ESLint plugin that validates data using JSON Schema Validator.

Clean featherweight state validation

Validation rules for FormKit

Generates zod schemas from Prisma models with advanced validation

Commonly shared types for FormKit

Forms utilities for PrimeUI Libraries

Azure OpenAPI Validator

XML-Tools Common Utilities

Azure OpenAPI Validator

Reusable adapter for class-validator classes

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

Validates mint.json files

A fast Luhn algorithm for validating credit cards

Validate GraphQL fields

Internationalization layer for FormKit.

Build functions in standardized containers.

Universal adapter for schema validation

Validation library inspired by Laravel's Validator

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.

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

Useful proptypes for react components

Parse your environment with Zod schemas

Validates if a value is a nonnegative integer.

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

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

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.

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

Validates if a value is a string primitive.

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

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

Yup, dead simple password validation.

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

Validates if a value is a Buffer object.

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

Validate cron expressions

OpenAPI code generation tool with validation powered by io-ts

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

Validates if a value is array-like.

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

An OpenAPI v3.0 development workflow assistant

Validates if a value is matrix-like.

build schema with validators for each endpoint

[](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

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.

Type signature parser for typify

Validates if a value is a positive integer.

JSON Schema fluent API

Ember computed property based validation library

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

Card type definitions and methods for creditcards

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

Starlight plugin to validate internal links.

Utility methods for formatting and validating credit cards

Validate JSON

Backstage entity validator library

Test if a value is an Error object.

Validates if a value is ndarray-like.

Validate openapi documents.

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

Yaml input field with validation and syntax highlighting as React Component

Express middleware to validate requests using zod schema's.

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

Backstage entity validator

A form input builder and validator for React

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.

Changesets for your local state

A string formatter and validator based on masks

Minimal JavaScript type checking library

Form component and utils for easy form validation in remix

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

An Express middleware to validate requests against JSON Schemas

validate express application inputs and parameters using joi

Schema Validation with typescript type inference.

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.

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

Configurable, input validated routing for koa.

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

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

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

A Pothos plugin for adding schema based validation

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

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.

Express middleware to validate request based on an OpenAPI 3 document

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.

Converts json-schema to Joi schema.

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

Optional features you can add to your FormKit inputs.

A Pothos plugin for adding argument validation

Validation and warning infrastructure for Sanity projects

UK Postcode helper methods

Schema validator for yaml files

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

An object shape validation utility.

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

A client for the App Store Server API

Check password strength

Core package of uniforms.

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

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

A (XSD) schema validator for nodejs

An extensible form library for Svelte