Data Validation

Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.

Returns true if a value has the characteristics of a valid JavaScript data descriptor.

Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.

Hash a stream of data, then validate

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

Runtime library to validate data against TypeScript interfaces

Detect if a string is a data URL

Excel Workbook Manager - Read and Write xlsx and csv Files.

Validates if a value is matrix-like.

Build functions in standardized containers.

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

Validation library inspired by Laravel's Validator

Type signature parser for typify

detect-content-type implements the algorithm described at http://mimesniff.spec.whatwg.org/ to determine the Content-Type of the given data. It considers at most the first 512 bytes of data. It always returns a valid MIME type: if it cannot determine a mo

Schema for data modeling & validation

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

Concise data validation library for Node.js and browsers

Lightweight data grid jQuery plugin. It supports basic grid operations like inserting, filtering, editing, deleting, paging, sorting, and validation. jsGrid is tunable and allows to customize appearance and components.

Dirty Forms is a jQuery plugin to help prevent users from losing data when editing forms.

Ultrafast UTF-8 data validation

Ember computed property based validation library

Azure Data Factory utilities library

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

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

Find diff between any two variables where variables be any valid JavaScript data type like string, numeric, array or object

Changesets for your local state

runtime type checking and validation of untyped JSON data

Common error classes and utility functions

Validation helpers for [zod](https://github.com/colinhacks/zod) specifically for parsing `FormData` or `URLSearchParams`. This is particularly useful when using [remix](https://github.com/remix-run/remix) and combos well with [remix-validated-form](https:

Validation of CSV file against user defined schema (returns back object with data and invalid messages)

Library for validating, parsing, and formatting data against open api schemas.

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

validation library for nodejs, inspired by laravel.

ESLint plugin that validates data using JSON Schema Validator.

NestJS middleware for handling multipart/form-data, which is primarily used for uploading files

Nodejs request body validator. Json data validator

Graphql query cost analyzer. Use it to protect your GraphQL servers against DoS attacks, compute data consumption per user and limit it.

A library of validations applicable to several Brazilian data like I.E., CNPJ, CPF and others

Decentraland data structure interfaces and validators for TypeScript-based projects.

The package serves as a single source of truth when validating requests coming into Ghost's Admin API endpoints. It uses [JSON Schema](https://json-schema.org/) definitions under the hood to describe expected format of validated data.

A utility for parsing and validating data URLs.

Fields can be used to manage data when it comes to form data manipulation and validation. After being associated with a component, the form data can be automatically written back, read, and verified.

Validate your objects against a swagger spec and receive in-depth error traces

I said I want **SIMPLE** runtypes. Just functions that validate and return data. Combine them into complex types and TypeScript knows their structure. That's how runtypes work.

ember addon, which adds validation support to your Ember-Data models.

an object structure predicate builder (make functions to test an object's structure)

Partial Lenses Validation is a JavaScript library for validating and transforming data

jQWidgets is an advanced Angular, Vue, Blazor, React, Web Components, jquery, ASP .NET MVC, Custom Elements and HTML5 UI framework.

A micro client-side validation library

Change your ng-attributes to data-ng-attributes for html5 validation