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

react-native-typed-stylus-transformer

v0.11.0

Published

Stylus transformer with Typescript support for React Native

Downloads

6

Readme

react-native-typed-stylus-transformer

NPM version Downloads per month contributions welcome

Load Stylus files to react native style objects.

This transformer also generates .d.ts Typescript typings for the Stylus files. Notice that platform specific extensions are not supported in the Typescript typings.

This transformer can be used together with React Native CSS modules.

Minimum React Native version for this transformer is 0.52. If you are using an older version, please update to a newer React Native version before trying to use this transformer.

Usage

Step 1: Install

yarn add --dev react-native-typed-stylus-transformer stylus

Step 2: Configure the react native packager

For React Native v0.57 or newer / Expo SDK v31.0.0 or newer

Add this to metro.config.js in your project's root (create the file if it does not exist already):

const { getDefaultConfig } = require("metro-config");

module.exports = (async () => {
  const {
    resolver: { sourceExts }
  } = await getDefaultConfig();
  return {
    transformer: {
      babelTransformerPath: require.resolve(
        "react-native-typed-stylus-transformer"
      )
    },
    resolver: {
      sourceExts: [...sourceExts, "styl"]
    }
  };
})();

If you are using Expo, you also need to add this to app.json:

{
  "expo": {
    "packagerOpts": {
      "config": "metro.config.js"
    }
  }
}

For React Native v0.56 or older

If you are using React Native without Expo, add this to rn-cli.config.js in your project's root (create the file if you don't have one already):

module.exports = {
  getTransformModulePath() {
    return require.resolve("react-native-typed-stylus-transformer");
  },
  getSourceExts() {
    return ["js", "jsx", "styl"];
  }
};

For Expo SDK v30.0.0 or older

If you are using Expo, instead of adding the rn-cli.config.js file, you need to add this to app.json:

{
  "expo": {
    "packagerOpts": {
      "sourceExts": ["js", "jsx", "styl"],
      "transformer": "node_modules/react-native-typed-stylus-transformer/index.js"
    }
  }
}

How does it work?

Your App.styl file might look like this:

.myClass {
  color: blue;
}
.myOtherClass {
  color: red;
}

When you import your stylesheet:

import styles from "./App.styl";

Your imported styles will look like this:

var styles = {
  myClass: {
    color: "blue"
  },
  myOtherClass: {
    color: "red"
  }
};

The generated App.styl.d.ts file looks like this:

export const myClass: string;
export const myOtherClass: string;

You can then use that style object with an element:

<MyElement style={styles.myClass} />

CSS Custom Properties (CSS variables)

You need version 0.11.0 or newer

:root {
  --text-color: blue;
}

.blue {
  color: var(--text-color);
}

CSS variables are not supported by default, but you can add support for them by using PostCSS and postcss-css-variables plugin.

Start by installing dependencies:

yarn add postcss postcss-css-variables react-native-postcss-transformer --dev

Add postcss-css-variables to your PostCSS configuration with one of the supported config formats, e.g. package.json, .postcssrc, postcss.config.js, etc.

After that create a transformer.js file and do the following:

// For React Native version 0.59 or later
var upstreamTransformer = require("metro-react-native-babel-transformer");

// For React Native version 0.56-0.58
// var upstreamTransformer = require("metro/src/reactNativeTransformer");

// For React Native version 0.52-0.55
// var upstreamTransformer = require("metro/src/transformer");

// For React Native version 0.47-0.51
// var upstreamTransformer = require("metro-bundler/src/transformer");

// For React Native version 0.46
// var upstreamTransformer = require("metro-bundler/build/transformer");

var stylusTransformer = require("react-native-typed-stylus-transformer");
var postCSSTransformer = require("react-native-postcss-transformer");

module.exports.transform = function({ src, filename, options }) {
  if (filename.endsWith(".styl")) {
    return stylusTransformer
      .renderToCSS({ src, filename, options })
      .then(css =>
        postCSSTransformer.transform({ src: css, filename, options })
      );
  } else {
    return upstreamTransformer.transform({ src, filename, options });
  }
};

After that in metro.config.js point the babelTransformerPath to that file:

const { getDefaultConfig } = require("metro-config");

module.exports = (async () => {
  const {
    resolver: { sourceExts }
  } = await getDefaultConfig();
  return {
    transformer: {
      babelTransformerPath: require.resolve("./transformer.js")
    },
    resolver: {
      sourceExts: [...sourceExts, "styl"]
    }
  };
})();