Check if a number is a valid month

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

This project serves as a converter between the legacy ruleset format and a new one. It's used internally, albeit it can be used externally too, also in browsers.

StyleX eslint plugin.

An implementation of the WHATWG URL Standard's URL API and parsing machinery

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 descriptor. Works for data descriptors and accessor descriptors.

Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet

testing tool for textlint rule.

A fully typed React custom hook for formatting and validating payment card input fields

JSON for humans and machines

URI validation functions

ESLint parser that allows for linting of experimental syntax transformed by Babel

A library for validating credit card fields

TypeScript definitions for valid-url

Validates custom element names according to the custom elements spec

Check that a git reference name is well formed

Validates namespaces and java package names against identifier rules

Library to work against complex domain names, subdomains and URIs. Only contains ICANN section.

Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data.