Error while using bip39.generateMnemonic(128) in react native

[rachna-khatnawlia]

enviromment doesn't have random bytes function while using bip39.generateMnemonic(128) in react native

[rachna-khatnawlia]

solution for this issue:

npm install react-native-crypto
import { randomBytes } from 'react-native-crypto';

const entropy = randomBytes(16);
const mnemonic = bip39.entropyToMnemonic(entropy);

[Ekaanth]

@rachna-khatnawlia I'm getting this error
`
assert could not be found within the project or in these directories:
node_modules
1 | var unorm = require('unorm')

2 | var assert = require('assert')
`
did you get the same error ?

[lumsdnb]

@Ekaanth you might be missing assert library as a dependency

[Somnath-Chattaraj]

I am getting error while using bip39.generateMnemonic() in react. Below is the error image. Please help.

[dev4bitcoin]

I am getting error while using bip39.generateMnemonic() in react. Below is the error image. Please help.

Did you find the solution?

[augustovicente]

I recommend using Expo's Crypto module: https://docs.expo.dev/versions/latest/sdk/crypto

My use case was something like this:

global.Buffer = require('buffer').Buffer;

import { entropyToMnemonic } from 'bip39';
import * as Crypto from 'expo-crypto';

export function generateMnemonicList(): string[] {
    const entropy = Buffer.from(Crypto.getRandomBytes(32));
    return entropyToMnemonic(entropy).split(' ');
}

It works pretty good on IOS.