npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

xspattern

v3.1.0

Published

XML Schema pattern (regular expression) matcher

Downloads

116,711

Readme

xspattern

NPM version CI

XML Schema Regular Expression engine

This library is a complete implementation of an engine for the regular expression language defined in XML Schema 1.0 and 1.1. It follows the XML Schema 1.1 specification, which corrects some errors in earlier versions but should be considered fully compatible with XML Schema 1.0.

For Unicode-related functionality, this implementation follows Unicode version 15.0.0. For compatibility with XML Schema 1.0, Unicode block names that existed in Unicode 3.1.0 are accepted as aliases for their current counterparts in \p{Is...} and \P{Is...} expressions.

Installation

The xspattern library can be installed using npm or yarn:

npm install --save xspattern

or

yarn add xspattern

The package includes both a UMD bundle (dist/xspattern.umd.js), compatible with Node.js, and an ES6 module (dist/xspattern.esm.js). The whynot library is used as a dependency, but is not included in the bundles. It should be automatically installed and included in most configurations.

Usage

The library currently exports a single function compile, which expects a string containing a single pattern and returns a function. This function accepts a single string representing a value to test and returns a boolean indicating whether the value matches the pattern.

// for ES6 / Typescript:
import { compile } from 'xspattern';
// or for CommonJS / Node.js:
const { compile } = require('xspattern');

// This pattern matches sequences of one or more lower case consonants
const matchesPattern = compile('[a-z-[aeoui]]+');
console.log(matchesPattern('asdfgh')); // false
console.log(matchesPattern('zxcvbn')); // true