react-native-components | Beautiful React-Native components using RN Paper | Frontend Framework library

Found the answer here https://www.codementor.io/vijayst/build-react-native-retrofitting-ios-app-to-android-gsf5uyl1q in the very 1st paragraph and it is exactly what I have been trying to get RN/Facebook answer but they ignored the question all the time.

Very disappointing!

So, ReactNative is not "build-once-use-everywhere" but rather "learn-once-use-everywhere" meaning lots of code duplication. And by everywhere, they mostly mean Android and IOS although the examples out-there are mainly IOS. If they cover both platforms, then it is with almost no code sharing but lots of code-duplication.

Although, RN claims they can achieve up to 90% of code sharing, that is not demonstrated anywhere that I could find. Documentation is very shallow in touching anything let alone topic of code-sharing and the tutorial provided by RN is a HelloWorld, ... yes, seriously. Sad! Although they used to have a better tutorial in older version (like 0.20 or so).

In terms of recommending RN to a company as a next-gen platform, I see few issues

• concerning patent license, no answers no explanations, very obscure and concerning for a company that would consider moving to this, I'd rather say open-source under quotation marks. Hopefully this will change as I see it as a mayor showstopper for anyone considering adapting this technology. I would say this is no more applicable as FB made react-native licensed using MIT as per https://github.com/facebook/react-native/issues/16079

• documentation that is very basic without giving depth of explanation. For example, this is react-native site with demo sample to demonstrate code-sharing cross-platform nature (I warn you, it is a HelloWorld example) https://facebook.github.io/react-native/docs/tutorial.html

• React Native Community facebook page which is the page where you are supposed to find help and ask question as per react-native site will simply block you if you bring this topic on and will not let you in
• even here on SO, questions like this (after extremely thorough and time consuming research) will earn you only downgrades and zero answers or even attempts
• examples lack clarity and depth of explanation, it seem like whole community follow one pattern, copy / paste demonstrating code-duplication rather than code-sharing
• Most examples cover (to most basic extent) only IOS although most claim cross-platform nature on both Android and IOS with Android being mentioned in the title only and the body covering only IOS
• Impossible to ask for help on react-native site
• Impossible to suggest improvement on react-native site other than create pull request. In other words, they want you to work for them for free
• The framework is cross-platform, that is great but it is more of a copy/paste (copy from IOS into Android, then modify what needs modification) rather than code-sharing strategy. Every example I was able to find and it took me a month, was a violation of DRY principle in its best form

Although I mentioned things that bothered me at most during my research, I have to say that I hope this technology will thrive and become clear open source platform in future. I really like it and hope someone at @Facebook / @ReactNative will consider these suggestions, or at least provide improvements in the documentation, examples, access to community, place to ask questions and get help, clear licensing, ... all of which I was not able to get after spending a month researching RN.

Perhaps the technology is still not mature enough, which makes sense, it is very new.

Would I recommend it?

• To developers yes, definitely. I really like it myself and will spend more time studying it.

• To a company? Not really for the reason explained above.

UPDATES - Getting Better :):

... and to add my 2c to anyone who faced the same problem and contribute to community (at least in terms of finding tutorials that talk about both IOS and Android), I will keep posting links I have managed to find so far:

• https://differential.com/insights/sharing-code-between-android-and-ios-in-react-native/ is very basic example. Not really code sharing but rather code duplication but at least something
• https://www.codementor.io/vijayst/build-react-native-retrofitting-ios-app-to-android-gsf5uyl1q, also more of a code copying rather than code sharing but hey... going somewhere
• https://hackernoon.com/getting-started-with-react-navigation-the-navigation-solution-for-react-native-ea3f4bd786a4 another good one

This document explains that RN philosophy is "learn once, write anywhere" rather than "write once, run anywhere" http://makeitopen.com/tutorials/building-the-f8-app/design/

It basically means you need to install the module separately, although it was part of React core module in previous versions.

The article has a download link: github.com/denodenodeno/employee. The project has the structure.