npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details


  • User packages



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.


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 🙏

© 2023 – Pkg Stats / Ryan Hefner




Convert CSS text to a React Native stylesheet object





Converts CSS text to a React Native stylesheet object.

Try it here

font-size: 18px;
line-height: 24px;
color: red;
  fontSize: 18,
  lineHeight: 24,
  color: 'red',

Converts all number-like values to numbers, and string-like to strings.

Automatically converts indirect values to their React Native equivalents.

text-shadow-offset: 10px 5px;
font-variant: small-caps;
transform: translate(10px, 5px) scale(5);
  textShadowOffset: { width: 10, height: 5 },
  fontVariant: ['small-caps'],
  // Fixes backwards transform order
  transform: [
    { translateY: 5 },
    { translateX: 10 },
    { scale: 5 },

Also allows shorthand values.

font: bold 14px/16px "Helvetica";
margin: 5px 7px 2px;
  fontFamily: 'Helvetica',
  fontSize: 14,
  fontWeight: 'bold',
  fontStyle: 'normal',
  fontVariant: [],
  lineHeight: 16,
  marginTop: 5,
  marginRight: 7,
  marginBottom: 2,
  marginLeft: 7,

Shorthands will only accept values that are supported in React, so background will only accept a colour, backgroundColor

There is also support for the box-shadow shorthand, and this converts into shadow- properties. Note that these only work on iOS.

Shorthand Notes

border{Top,Right,Bottom,Left} shorthands are not supported, because borderStyle cannot be applied to individual border sides.


The API is mostly for implementors. However, the main API may be useful for non-implementors. The main API is an array of [property, value] tuples.

import transform from 'css-to-react-native';
// or const transform = require('css-to-react-native').default;

  ['font', 'bold 14px/16px "Helvetica"'],
  ['margin', '5px 7px 2px'],
  ['border-left-width', '5px'],
]); // => { fontFamily: 'Helvetica', ... }

We don't provide a way to get these style tuples in this library, so you'll need to do that yourself. I expect most people will use postCSS or another CSS parser. You should try avoid getting these with string.split, as that has a lot of edge cases (colons and semi-colons appearing in comments etc.)

For implementors, there is also a few extra APIs available.

These are for specific use-cases, and most people should just be using the API above.

import { getPropertyName, getStylesForProperty } from 'css-to-react-native';

getPropertyName('border-width'); // => 'borderWidth'
getStylesForProperty('borderWidth', '1px 0px 2px 0px'); // => { borderTopWidth: 1, ... }

Should you wish to opt-out of transforming certain shorthands, an array of property names in camelCase can be passed as a second argument to transform.

transform([['border-radius', '50px']], ['borderRadius']);
// { borderRadius: 50 } rather than { borderTopLeft: ... }

This can also be done by passing a third argument, false to getStylesForProperty.


Licensed under the MIT License, Copyright © 2019 Krister Kari, Jacob Parker, and Maximilian Stoiber.

See for more information.