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
Related
Unable to find much info on this.
We have a standard React-native CLI project.
Versions
React: 18.2.0
ReactNative: 0.71.1
None of the configuration files have been edited from default as far as i'm aware.
We have added the following npm package to access and manage camera usage
npm install react-native-vision-camera
Without importing the package anywhere in the app. The build is now failing with the following outputs.
I've tried various npm camera packages, they have all suffered similar issues.
If I uninstall the package. The app builds fine again.
Any ideas what i'm doing wrong?
working on implementing magic.link using react-native but i get an error when importing Magic
import { Magic } from "#magic-sdk/react-native";
error:
Attempted import error: 'WebView' is not exported from 'react-native'.
I think its because of the sub dependency of react-native-webview has been removed, but i did install it. npm install --save react-native-webview#^8.0.0 as the tutorial says? Stuck for a while now, not sure how to procede with Magic
https://magic.link/docs/login-methods/email/integration/react-native
This link was attached to the docs https://github.com/react-native-webview/react-native-webview/issues/373 . But don't know why it should not work, since the correct react-native-webview dependency was installed (8.0.0) or (^8.0.0, which is 8.2.1)
I installed the packages as the tutorial suggests
yarn add #magic-sdk/react-native
# Ensure the required `peerDependencies` are installed
yarn add react-native-webview#^8.0.0
Use this one:
npm install --save #magic-sdk/react-native
then try to link it using npm react-native link
I have followed the instructions to install react-native-twitter-lite via npm page ....as per below:
npm install twitter-lite
....then on app.js:
import Twitter from 'twitter-lite';
const twtClient = new Twitter({
consumer_key: 'xxxx',
consumer_secret: 'xxxx',
});
...I get error Unable to resolve module crypto from node_modules\twitter-lite\dist\twitter.js: crypto could not be found within the project
...even though I can see that the file node_modules\twitter-lite\dist\twitter.js exists
The issue might be that cryptojs is missing from your dependencies (not installed in your app), but react-native-twitter-lite still need it to run for security. You surely have the twitter.js but not the crypto.js. Cryptojs is used by twitter-lite to cypher and encrypt data. You may choose to use Nodejs's crypto module or react-native's build-in cryptojs. I always choose the later one for a more native behavior. For that, simple run
npm install react-native-crypto-js --save.
The first time I run into this issue this source helped me understand.
This happens to me, most likely when installing a new package to my project, I didn't try to install react-native-twitter-lite , but my general approach is :
Try to install the missing module yourself , in your case, install Crypto
Delete node_modules and install the dependencies again, run rm -rf node_modules && npm install
run your project npm start and then npm run android && npm run ios
If you install native module you will need to rebuild your app. It’s jut hot reloadable.
If that’s not your issue, but you’re using typescript, you may be missing a dependency that can fortunately be resolved using:
npx typesync
Are you using Expo or Xcode/Android Studio? If Expo, note that Expo handles a Bare and a Managed workflow. If you are using a managed workflow you may have these issues since Expo is managing native modules for you so you may want to check if Expo has a similar dependency to what you’re using, otherwise you may want to eject from Expo.
If developing for iOS, you may also want to check if you’ve installed the pods you need. You can do this using the following:
npx pod-install from root of project directory (likely same directory as package.json)
All else fails:
rn -rf node_modules
npm install && npx pod-install
(If usingTypescript also try npx typesync)
If developing for Android, make sure you add necessary code on gradle file, can be pasted anywhere (likely in docs)
I have recently integrated react-native-web into my native project and have included webpack. I've followed all the instructions listed here.
However, when trying to run using the webpack command listed on the bottom of that page, i keep getting the error:
ERROR in ./index.web.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
Error: Cannot find module 'babel-preset-react-native' from '<*path to root*>'
I have the preset metro-react-native-preset already installed and my babel config looks like the following:
babel.config.js
module.exports = {
presets: ['module:metro-react-native-babel-preset']
};
Im currently using React Native 0.62
Could you try to install 'babel-preset-react-native'?
npm install --save -dev babel-preset-react-native
You said you've got metro-react-native-preset already installed but your config has metro-react-native-babel-preset - I assume that mismatch is just accidental?
Anyway, that's probably unrelated. Here's a few things to try:
Have you verified you've got 0.62 of react native installed? I.e. in the npm lock file, as maybe you're on an older version (pre 0.57) which uses that older plugin.
Have you got a .babelrc file too, perhaps, with the other plugin defined instead?
Similar to (1), have you tried to delete the lock file and/or node_modules folder and run npm install again from scratch so versions match up properly.
I have posted this here have created react-native app using
react-native init myapp
added web3 in package.json
npm install
react-native run-ios
but i am getting the error unable to resolve module crypto from web3-eth-accounts. Is there any way to fix this
unable to resolve crypto
Crypto is a node js module, when React Native is run - it uses Javascript Core. Crypto isn't include within this. When I installed crypto I used the following package:
https://www.npmjs.com/package/react-native-crypto
Instructions:
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
rn-nodeify will create a shim.js in the project root directory
// index.ios.js or index.android.js
// make sure you use `import` and not require!
import './shim.js'
// ...the rest of your code
Import shim.js in your index.js file.
When you have done that crypto should be made available, if it still doesn't work I had to create a const in my App.js file like so:
export const cryp = require('crypto');
And import it into the components you need.
UPDATE
I've done a fresh build for this, I followed the below:
react-native init TestApp
Follow the instructions above for Crypto.
Linked:
react-native link
react-native run-ios
react-native-crypto don't work on recent react-native version 0.63.3 and react version 16.13.1, any more.
I used crypto-js package. The version is 3.1.9-1 in my react-native app. It's working well.
You can add below line in package.json file.
"crypto-js": "3.1.9-1",
crypto is a node's library that works with the browser however we can use it with react native with some hacks mentioned below follow these steps and boom! you are ready to rock.
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" fieldwith relevant mappings
./node_modules/.bin/rn-nodeify --hack --install
i had the same problem, it seems the crypto module is not supported by react native because when i install crytpo , it does not have an index.js file in the node_modules. so my problem came about when i was trying to use jsonwebtoken which uses crypto to encrypt data. so i uninstalled jsonwebtoken and switched to react-native-pure-jwt