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

Object schema validation

String validation and sanitization

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

JSON Safe Parser & Schema Validator

URI validation functions

The modular and type safe schema library for validating structural data

Build forms in React, without the tears

Convert Swagger 2.0 definitions to OpenApi 3.0 and validate

Parser/validator for OpenAPI 3.x definitions

Validate JSON

Email address and domain validation

Another JSON Schema Validator

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

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.

Express middleware for the validator module.

Validates if a value is an integer.

Validates if a value is a number.

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

Generate Zod schemas from Drizzle ORM schemas

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

A tiny javascript type testing tool

Check if a string is a scoped npm package name

User validations for npm

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

Painless forms for Vue.js

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

A beautiful command-line prompt for node.js

A JavaScript plugin for entering and validating international telephone numbers

Hash a stream of data, then validate

React Hook Form error message component

React Hook Form dev tool to help debugging forms

Declarative validations for JavaScript

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

A React component for input text field

Validation rule for GraphQL query complexity analysis

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

React component to provide validation states to form fields

Detect Filetype by bytes

Validation for your environment variables

Blazing fast input validation and transformation ⚡

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

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)

Client-side form validation made easy

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

Swagger 2.0 and OpenAPI 3.0 command-line tool

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

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.

GitHub’s GraphQL Schema with validation. Automatically updated.

Typescript API client with autocompletion and zod validations

Utilities to format and customize Zod error messages

vee-validate integration with zod schema validation

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

Form Validation for Vue.js

Core module of JSON Forms

Simple validations for node and the browser.

Creates Zod types from JSON Schema at runtime

Dead simple fluent JavaScript validation library

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

Validate postcodes based on country

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

Joi extension for dates

Conform view adapter for react

TypeScript compatible runtime type system for IO validation

Validate a response according to an openapi schema.

Form data validation library for Node.js

A joi validation middleware for Express.

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

Schema for data modeling & validation

The framework agnostic core of FormKit

Making SvelteKit forms a pleasure to use!

Build industry leading Vue forms 10x faster.

Conform helpers for integrating with Zod

Utility to wrap a FormKitNode in a dependency tracking observer proxy

Validate JSON

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.

Validates password according to flexible and intuitive specifications

Quick and easy Smarty address validation.

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

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.

Runtime type-checking for JavaScript.

The fastest JS validator library for NodeJS

Clean featherweight state validation

Validation plugin for FormKit

Strict URL sanitization with security-focused validation

ESLint plugin that validates data using JSON Schema Validator.

Forms utilities for PrimeUI Libraries

Azure OpenAPI Validator

Reusable adapter for class-validator classes

XML-Tools Common Utilities

Validation rules for FormKit

Validates mint.json files

Commonly shared types for FormKit

A fast Luhn algorithm for validating credit cards

Validate GraphQL fields

Azure OpenAPI Validator

Azure OpenAPI Validator

Build functions in standardized containers.

Generates zod schemas from Prisma models with advanced validation

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

Official vee-validate nuxt module

Validation library inspired by Laravel's Validator

Internationalization layer for FormKit.

Universal adapter for schema validation

vee-validate integration with yup schema validation

Validate OpenApi specifications against their JSON schema

Assertion library for form validations

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

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

openapi-io-ts core package

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

Type guards

Validate object properties in javascript.

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

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

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

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

Useful proptypes for react components

Validates if a value is a nonnegative integer.

Parse your environment with Zod schemas

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

Postal Codes

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

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

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

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

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

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

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

Yup, dead simple password validation.

Validates if a value is a string primitive.

Validates if a value is a Buffer object.

OpenAPI code generation tool with validation powered by io-ts

Joi extension for dates

Validate cron expressions

✅ Vite plugin for validating your environment variables

Validates if a value is matrix-like.

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

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

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

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

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

Validates if a value is array-like.

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

An OpenAPI v3.0 development workflow assistant

Ember computed property based validation library

JSON Schema fluent API

build schema with validators for each endpoint

Validate JSON

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

Utility methods for formatting and validating credit cards

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

Starlight plugin to validate internal links.

Validates if a value is a positive integer.

Test if a value is an Error object.

Type signature parser for typify

Card type definitions and methods for creditcards

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

Backstage entity validator library

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

Express middleware to validate requests using zod schema's.

Yaml input field with validation and syntax highlighting as React Component

Validate openapi documents.

Backstage entity validator

Standard assertion utilities.

A string formatter and validator based on masks

Minimal JavaScript type checking library

Stream-based library for parsing and manipulating subtitles

Validates if a value is ndarray-like.

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

Form component and utils for easy form validation in remix

An Express middleware to validate requests against JSON Schemas

A form input builder and validator for React

validate express application inputs and parameters using joi

Generate Typebox schemas from Drizzle ORM schemas

Changesets for your local state

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

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

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

Core validator component for react forms.

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

A Pothos plugin for adding schema based validation

Express middleware to validate request based on an OpenAPI 3 document

Configurable, input validated routing for koa.

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

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

Schema Validation with typescript type inference.

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

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

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

Validate your BPMN diagrams based on configurable lint rules

Converts json-schema to Joi schema.

A Pothos plugin for adding argument validation

An object shape validation utility.

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

Validation and warning infrastructure for Sanity projects

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

Schema validator for yaml files

Optional features you can add to your FormKit inputs.

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

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

UK Postcode helper methods

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

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

Standard Number Validation

Check password strength

Core package of uniforms.

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

An easy way to validate forms using back end logic

An extensible form library for Svelte

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

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

angular2 validation