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Your React Native project might require polyfills for certain global objects. The requirements differ based on your Expo SDK version.
Expo SDK 54 and above have built-in support for most polyfills.Expo SDK 53 and below require additional polyfills as described in the sections below.

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For Expo SDK 54 and Above

Installation 
npm install @react-native-anywhere/polyfill-base64
Include the following code in your project’s entry point: 
import '@react-native-anywhere/polyfill-base64';

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For Expo SDK 53 and Below

Installation 
npm install text-encoding react-native-get-random-values buffer @react-native-anywhere/polyfill-base64
Include the following code in your project’s entry point to set up the polyfills: 
import 'react-native-get-random-values';
import '@react-native-anywhere/polyfill-base64';
import { Buffer } from 'buffer';

// Polyfill for @dynamic-labs/solana-extension
global.TextEncoder = require('text-encoding').TextEncoder;
global.Buffer = Buffer;

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Additional Requirements

If you’re using ZeroDev, also please refer to the ZeroDev polyfills section.