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

formalist-validation

v1.0.0

Published

Data validation library for Formalist based on predicate logic.

Downloads

1,001

Readme

Formalist Validation

Data validation library for Formalist based on predicate logic.

The scope of the library is very simple. It tests a value against a given schema and returns an array of relevant error messages.

Usage

import validation from 'formalist-validation'

// Define a schema
const schema = {
  "filled": true,
  "min_size": 2,
  "max_size": 3,
}

// Curry validator with the schema
const validator = validation(schema)

// Test
validator([1])
// => ['size cannot be less than 2']
validator([1,2])
// => []
validator([1,2,3])
// => []
validator([1,2,3,4])
// => ['size cannot be greater than 3']

View the full list of available predicates to see what else you can test.

Caveats

  • Tests will only be run if there’s a value to test or the schema specifies that to test that the value is 'filled'.
  • All the predicate tests are run as logical ANDs. There’s no support for more complex logic at at the moment.

TODO

  • [ ] Allow custom validations to be injected
  • [ ] i18n support