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 🙏

© 2024 – Pkg Stats / Ryan Hefner




A Babel preset let you `import` application configs from **.env** file (zero runtime dependency)





Let you import environment variables from a .env file in React Native, don't need any native code integration.

CircleCI npm version npm downloads


$ npm install react-native-dotenv --save-dev

Add the react-native-dotenv preset to your .babelrc file at the project root.

  "presets": ["react-native", "react-native-dotenv"]

If you haven't got .babelrc set up for React Native, remember to install babel-preset-react-native first.

$ npm install babel-preset-react-native --save-dev


Add your app configuration in an .env file.


Now you can import it in your .js file.

import { API_KEY, ANOTHER_CONFIG } from 'react-native-dotenv'


How does it works?

As you can see, it's implemented as a babel plugin. All referenced imported members are replaced as the values specified in the .env file.

The example above will get compiled as below.

ApiClient.init('lorem', 'foobar')


Changes to .env file is not updated

Manually edit the file importing react-native-dotenv by either adding an empty line or whitespace will work.

Can I use different .env settings for production ?

Yes, simply create a separate .env.production file and the default release process of react-native will pickup the right config.


You can use the Release configuration to launch the Simulator. (Only supported in RN v0.39+)

react-native run-ios --configuration Release


  1. Command⌘ + M to launch the developer menu in Android emulator.
  2. Tap DevSettings.
  3. Toggle JS Dev Mode.

Can I have more than production & development environment configs?

Sadly, it's not available so far. One of the workaround is generating .env file before triggering RN's bundle script automatically using either shell script or your own custom build pipeline.


David Chang @zetachang


MIT License, see LICENSE file for detail.