Read and modify Office Add-in manifest files.

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

A JavaScript implementation of a extendable, fully compliant JSON Schema validator.

mjml-validator

Base64 and base64url to string or arraybuffer, and back. Node, Deno or browser.

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

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

Check if a buffer contains valid UTF-8

Validates if a value is a string primitive.

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible

Validate XML, Parse XML, Build XML without C/C++ based libraries

A ridiculously light-weight argument validator (now browser friendly)

GJS TypeScript type definitions for Gst-1.0, generated from library version 1.28.1

A JavaScript / TypeScript / Node.js implementation of JSON Type Definition

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

The JS Buy SDK is a lightweight library that allows you to build ecommerce into any website. It is based on Shopify's API and provides the ability to retrieve products and collections from your shop, add products to a cart, and checkout.

A mutex for guarding async workflows

Screenshots with JavaScript

The modular and type safe schema library for validating structural data

A schema validation package that supports direct validation of MongoDB update modifier objects.