I created a package which uses react-native-webview as a dependency and I published it to npm.
My steps to create and publish a package are:
npm init
npm link react-native-webview
npm install react-native-webview
npm publish
Everything worked perfectly and I successfully published my package.
However, after the installation of my package using npm install <package_name> in another project, when I run the project I always get this error:
requireNativeComponent: "RNCWebView" was not found in the UIManager
I don't know why I am getting this. I also checked the dependencies in node_modules folder and all are present. But when I install react-native-webview dependency explicitly into my project It works perfectly fine.
This error is due to native link not present in between the UIManager and the JS core
You can either run react-native link react-native-webview or link it manually
use react-native link command to link dependencies
run
npx react-native link react-native-webview
Related
I have developed an npm package for React Native (myPackage).
As might you know React Native doesn't have built-in support to handle SVG images so I am using this package react-native-svg for handling SVGs in my myPackage
After developing I have created a new React Native app (create-react-native-app my-project) and installed myPackage through npm I myPackage
so, the problem is when I install myPackage in my-project it installed successfully and listed in node_modules but I am getting an error that the RNSVGPath was not found but it actually exists in node_modules
Workaround:
It works if I install the package again in my-project
It shouldn't be like this because my-project must use dependencies of myPackage. I don't want to install manually react-native-svg
If you're using react-native-cli or the expo bare workflow, it's probably because you didn't run pod install after installation
I am using https://reactnative.dev/docs/environment-setup 0.64
I npm install #walletconnect/client
put below import in App.js
import WalletConnect from "#walletconnect/client";
after npx react-native run-ios and got below error:
error: Error: While trying to resolve module `crypto` from file `/Users/hahaha/workspace/mobile/reactnative/nonft/node_modules/#pedrouid/iso-crypto/dist/cjs/helpers/env/node.js`, the package `/Users/hahaha/workspace/mobile/reactnative/nonft/node_modules/crypto/package.json` was successfully found. However, this package itself specifies a `main` module field that could not be resolved (`/Users/hahaha/workspace/mobile/reactnative/nonft/node_modules/crypto/index.js`. Indeed, none of these files exist:
I tried to remove node_modules folder and npm install again but still get the same error.
I am sure that it is thrown by #walletconnect/client because when I removed
import WalletConnect from "#walletconnect/client";
then the error gone
crypto is a built in Node module, which isn't available in React Native, as iOS/Android apps don't run with a Node runtime - only web apps do.
There are a few ways to solve this problem, all of them fairly hacky.
One way is to replace the crypto module with a React Native native module that does the same thing. React-native-crypto is the package used by create-react-native-dapp (https://www.npmjs.com/package/create-react-native-dapp) to integrate with WalletConnect: https://www.npmjs.com/package/react-native-crypto
To get this integration working, note that you'll need to be able to link modules and run rn-nodeify, as it mentions in the instructions on that npm package:
npm i --save react-native-crypto
# install peer deps
npm i --save react-native-randombytes
react-native link react-native-randombytes
# install latest rn-nodeify
npm i --save-dev tradle/rn-nodeify
# install node core shims and recursively hack package.json files
# in ./node_modules to add/update the "browser"/"react-native" field with relevant mappings
./node_modules/.bin/rn-nodeify --hack --install
If you're using Expo, note that you'll need to eject Expo before this can work.
Another hacky workaround is to run WalletConnect in a WebView using react-native-webview. There's an old but working example of this that you can just use to plug and play WalletConnect without requiring linking that you can get here: https://github.com/cawfree/react-native-walletconnect
Note that that repo is archived and effectively hardcoded to WalletConnect version 1.0.0, but it's a pretty simple codebase - you can just effectively copy and paste its code and update it to the latest version of WalletConnect to get it working with a later version if desired.
As a final note, there are multiple ways to get node modules running in React Native on top of rn-nodeify. If you'd like to explore other methods of getting node modules running, here's a quick rundown of other possibilities: https://gist.github.com/parshap/e3063d9bf6058041b34b26b7166fd6bd
I am using react native and Expo. I am unable to build new app because after I use expo init appName it shows the following error.
Heres the full message:
📦 Using npm to install packages. You can pass --yarn to use Yarn instead.
√ Downloaded and extracted project files.
× Something when wrong installing JavaScript dependencies. Check your npm logs. Continuing to initialize the app.
✅ Your project is ready!
To run your project, navigate to the directory and run one of the following npm commands.
- cd Scanner
- npm start # you can open iOS, Android, or web from here, or run them directly with the commands below.
- npm run android
- npm run ios # requires an iOS device or macOS for access to an iOS simulator
- npm run web
I tried multiple times to create a blank project, also tried npm install to install failed/not downloaded libraries and continue after failure but it showed another error:
npm ERR! code Z_BUF_ERROR
npm ERR! errno -5
npm ERR! zlib: unexpected end of file
also tried npm cache verify that showed cache is ok Content verified: 3562 (252580364 bytes).
So, How can I solve this issue?
Problems related to npm installation are very common If you do any mistake in early installation, but is avoided. Learn more about npm tree.
Steps worked for me are :
npm cache clean --force
npm cache verify
npm -g uninstall expo-cli --save
npm install expo-cli --global
expo init app-name
cd app-name
npm start
Always run as administrator if working on Windows and in root directory.
The solutions above didn't work for me but if you use 'npm install' in the directory of the app you get a clue that you shuold try 'npm install --force'
err message
You should have all these files folders and files at the start of the project otherwise not all the dependencies have been installed which is why we were getting the problem.folder structure
After you have added --force to npm install you have all the dependencies installed. Now you can run the app with npm start.
Unfortunately, all the solutions described above didn't work on my machine...
Here is my latest solution for this problem...
This worked 100% on my machine...
Use npm i -g expo-cli
This will automatically add the required packages and also remove the unnecessary ones.
Yes, surely, you don't need to uninstall and re-install it again.
Just follow my steps.
And, you can create your expo project using expo init.
I hope my solution will help you out from this annoying problem....
I just did npm install and it worked for me, but I had do that every time I create a new expo project.
I also encountered this problem, and finally found that it was the problem of react native cli，I installed the latest version of react native cli，Expo is back to normal
This Error is regarding to the git account. expos need a git account to setup react native project
If you are using windows you need to install git in your local PC
after that open your Terminal and type this command
git config --global user.name "your_username"
git config --global user.email "your_email_address#example.com"
after that clone any github project to your local computer. it will ask to login to Github
after all these steps try expo init <projectname>
The simple way to settle that error is by using "expo-cli init app-name" instead of "expo init app-name".
I tried and worked perfectly for me. Hope it will help you guys.
i have faced a similar problem and running yarn set version 1.22.1 fix it
Run the Command Prompt as an administrator. And run the following command:
npx create-expo-app AwesomeProject
For some reason the Expo team is not updating their packages on npm and I need to install directly from their Github repo. The packages are in the packages/package-name folders on the main Expo repository.
I put "expo-blur": "expo/expo packages/expo-blur" in package.json, but that also just uses the npm release. I asked a similar question here: https://forums.expo.io/t/recommended-way-for-using-expo-packages-straight-from-github/22022.
What do I need to put in package.json so that it uses the code from here: https://github.com/expo/expo/tree/master/packages/expo-blur ?
No you can't. You will end up having it undefined in your package.json file like this:
The command was:
npm install Teknasyon-Teknoloji/desk360-react-native-sdk#1.0.0 --save
I tried:
npx expo install Teknasyon-Teknoloji/desk360-react-native-sdk#1.0.0
So the correct way is:
Switch to bare workflow if you are in managed workflow:
npx expo prebuild
Then follow the rest of the steps from the package docs. So I then ran:
npm install Teknasyon-Teknoloji/desk360-react-native-sdk#1.0.0 --save
then cd ios, pod install ...etc.
Every time I try to react-native link a new library, I get the same error message. Here it is for react-native-video.
rnpm-install info Linking react-native-video android dependency
rnpm-install ERR! Something went wrong while linking. Error: ENOENT: no such file or directory, open '/Users/Me/Projects/myProject/android/app/src/main/java/com/companyName/appName/MainApplication.java'
Please file an issue here: https://github.com/facebook/react-native/issues
The actual location of my MainApplication.java file is
./android/app/src/main/java/com/appName/MainApplication.java
The difference is that React Native Link is including "company name" in the path, which doesn't match my project.
How can I fix this?
I looked over some topic and found solution, you can try with:
npm install --save-dev babel-plugin-module-resolver
and then add your npm install package & react-native link again.
Good luck
I'm pretty late to the party on this, but for future reference;
TLDR: Adding another folder like so java/com/companyName/AppName/ will fix your issue.
After updating to the latest react-native I had this issue too. Your android path contains your apps ID so com.test.app path should be android/app/src/main/java/com/test/app.
Looking at your error message, its actually telling you where it's expecting the file to be;
Error: ENOENT: no such file or directory, open '/Users/Me/Projects/myProject/android/app/src/main/java/com/companyName/appName/MainApplication.java'
If you create another folder like so java/com/companyName/AppName/ you will be able to automatically link plugins.
Another way I tried and it works for me:
rm -rf node_modules && npm install
Then retry install your package:
ex:
npm install react-native-image-picker#latest --save
Then react-native link your package
react-native link react-native-image-picker
There are only two options that i am aware of to solve this problem
close all the terminals to stop the node server running on a difference terminal.
If you still have the mistake after that then try the following option
You might still have the error because you uninstall and re-install react-native without paying attention to the version that you installed which for most case will be the latest version. So double check the current version of your react-native when installing it. "\n"
so either
in your package.json you add "react-native": "^0.60.5" if the version is 0.60.5 replace "^0.60.5" by the version you are trying to run, in devDepencies and run npm install
or
run npm install react-native#0.60.5 or npm install react-native#version