I'm new in React Native, please bear with me. I have a library, which works fine in NodeJS and in browser. I would like to make it usable in React Native too.
I created an example project, imported the library but it threw an exception - Unable to resolve module `http`. If I try to import the browser version, document is not available.
Since then I'm scratching my head - how am I supposed to make my library to work in React Native if neither the core NodeJS modules, nor document are available?
React Native does not have access to Node.js modules such as http, so any code that relies on that functionality is not going to work. You will have to remove or replace it. As for document, window and other DOM-specific APIs, RN does not use a DOM at all, instead it uses its own rendering mechanism that is coupled to the native APIs. You will also have to remove all those calls and replace them with React Native-compatible ones.
Related
I am building a React Native Application using Expo and I want to integrate a 1:1 video calling functionality in the app.
From what I have researched so far on the topic is that I can use SDKs of various libraries like Twilio, Videosdk, VoxImplant etc to implement that feature or I have to use WebRtc in native project alongwith some mechanism to create rooms using socket.io and node and then join users in that room (not completely sure about it but something like this)
But both of these solutions require me to make changes in native files which are not present in expo app by default for which I think I have to run expo run:android and then make require changes in files (correct me if I am wrong)
Although on web I think its relatively easy to implement video calling using vanilla js or react js.
My question is if I implement a webpage that has video calling function and try to open it in webview in my expo react native app will the functionality work on app or not? has someone tried this before.
As I was exploring options I came BigBlueButton APIs and another question on Stackoverflow that is using Webview to connect to BigBlueButton APIs. Can I use this logic to implement something in expo app without ejecting or using any sdks? Will it work
What would be the best way to implement video calling in my expo app
Thanks
Utilizing Expo, you are essentially using 'React Native for Web', and with the new functionality of Expo config-plugins, almost all packages for React Native with auto-linking can be made to work with your Expo app, or more-or-less can have Config Plugins created for them.
For your case, good news for you, you can make it all work on Expo managed workflow, just utilize expo-dev-client and the following library:
react-native-webrtc
There's an Expo config plugin for this package. So now all you have to do is just utilize the Web-based functionality of WebRTC, such as calling:
navigator.mediaDevices.getUserMedia()..
navigator.mediaDevices.enumerateDevices()..
navigator.*
And ensure it works properly on Web. Then, just make a platform hook at your App.js / First loaded module / before having these WebRTC based functionalities calling the aforementioned library's initializer. e.g:
import React, { useEffect } from "react";
import { Platform } from "react-native";
import { registerGlobals } from "react-native-webrtc";
...
Platform.OS !== "web" && useEffect(() => {
registerGlobals();
}, []);
...
One more thing you'd have to do is that for Web, have the <video> element and for native apps, resolve it to <RTCView>, so essentially you could also make a platform specific component/module that resolves to either the web-only <video> tag or the native <RTCView> based on platform, like the example above. Perhaps even have the imports be resolved based on dependencies if you face any errors importing 'registerGlobals' at Web, for example.
I'm trying to create an example React Native application for my package (https://github.com/BenJeau/react-native-draw) which now is divided in multiple npm packages. Everything is working with Expo, but since I am introducing non-Expo compatible packages, I need to switch the example to a pure React Native project (which can be found in the feat-skia branch).
I inspired myself from #react-navigation repository layout and it worked for the Expo example, but now that I'm moving to a pure React Native example, it is not working either giving one of the following errors variations when loading components from the packages within my library:
Error: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:
Invariant Violation: View config getter callback for component 'RNSVGPath' must be a function (received 'undefined').
Would anyone know how to properly configure metro or have links on setting up metro in a workspace in a pure React Native project?
Thanks!
my question might be a little bit silly or ambiguous since I am fairly new to react native.
I'm trying to use the following repository for my react-native project https://github.com/smekalka/react-native-universal-pedometer. I have noticed that the repo is implemented in .java with platform folder unlike the regular .js or .ts files I used to see. Is this repository considered native module as react native doc describe?
Or in general how I can tell the whatever lib I am using is a native module.
The project is previously tested are under the support of expo-cli. I experienced the error null is not n object while using this repo. If so, I am probably going to eject the expo-cli and rewrite my code so I can use and even create own native-module for full control, some core implementations that written in other languages or expo-cli does not support.
Yes, the android and ios directories in the repository contain the 'native' code used to implement the platform-specific hooks that the Javascript will be able to pick up. Expo is not able to use these native modules or native code so your assumption is correct; you will need to eject your app in order to use this module.
If your app is below version 0.60 of React Native, after installing the module you will need to run react-native link react-native-universal-pedometer to link the native code to the Javascript runtime. If you're above 0.60, it will link automatically when installed.
I use expo SDK v35, and works on the managed workflow (one without eject).
In my project, I face warning whenever I use AsyncStorage as demonstrated by their doc.
This, however, results in following warning being emitted:
Warning: Async Storage has been extracted from react-native core and will be removed in a future release. It can now be installed and imported from '#react-native-community/async-storage' instead of 'react-native'. See https://github.com/react-native-community/react-native-async-storage
I tried to follow the instruction given by this warning, and tried to use #react-native-community/async-storage, but it did not succeed; it appears the library requires some linking, which is not available if you want to work inside the Expo's managed workflow.
Question
What is the proper way to handle AsyncStorage warning when working on expo's managed workflow?
Env
Expo 35.0.0
Recently I began developing a simple app using react native and the expo cli. However, on the react native docs, it seems that asyncStorage is getting deprecated. The solution would normally be to use the react community version but that is not compatible with expo.
https://github.com/react-native-community/async-storage/
There is currently no scope of linking libraries while using the managed workflow of expo. I've faced similiar issues , and was bound to migrate from expo to pure react native. And expo isnt meant for production as apps are slower. Better i would suggest you to migrate to pure React native . Async storage cant be used otherwise and if deprecated , you will be in a great problem in the future for your app.
I want to use stripe.js library with React native which is only available with a cdn.
Is it possible to use a js library with a cdn only with react native?
If your goal was simply to integrate an external JavaScript file in your project, the best way might be to download the file from the CDN manually, or as part of your build process and simply require/import the local file in your app.
However, for using Stripe in your app, I'd recommend looking for a mobile-specific solution such as stripe-expo, or react-native-payments with the react-native-payments-addon-stripe. The stripe.js library is intended for browser use, and while it may work, mobile-specific SDKs are likely to work better in React Native.
Googling "react native stripe" turns out a few other third-party libraries as well. I haven't personally used any of them, but they may be worth evaluating.