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

vsj

v0.2.0

Published

Simple, fast, minimal JSON Schema validation.

Downloads

12

Readme

VSJ is JSON Schema Validation

:bulb: Learn more about JSON Schema at json-schema.org.

Why?

Because after using it for years, I came to acknowledge that the current de facto standard library for JSON schema validation in JavaScript apps -- AJV -- is clunky. I thought, "how hard could it be?" Two days later, here we are. As it turns out, not that hard.

I primarily use JSON Schema validation for HTTP requests. For each endpoint, I model the query parameters, path parameters, and request body I expect as a JSON Schema, and I short-circuit processing when this validation fails. It's one of the many stages in a multi-stage request processing pipeline.

Features

  • lightweight and minimal -- zero dependencies
  • readable implementation -- learn from the source code
  • readable errors -- easy to see what failed and why
  • comprehensive test suite -- 100% code coverage
  • idiomatic usage -- failed validation throws an error
  • concurrency-friendly -- tightly scoped for massively parallel usage
  • fast -- highly tuned for validation performance
  • standard compliant -- IETF draft-bhutton-json-schema-validation-01 (2022-06-16)

Installing

Install VSJ just like you would any other npm package:

npm install vsj

Usage

import { createValidator } from 'vsj';

const validate = createValidator({ type: 'number' });

// throws a validation error
validate('hello world');

// does not throw an error
validate(123);