Expo Stellar SDK

This is a wrapper for the official Javascript Stellar SDK that works in managed Expo environments.

There's not a lot going on here, really. The basic idea is to shim a handful of node modules that are not available in React Native and use expo-random to generate random bytes to use as seed for a Keypair.

Why?

The Stellar SDK docs only show how to set up the SDK with apps that are either started with react-native init, Expo's bare workflow, or ejected apps.

Their approach uses rn-nodeify, a CLI tool that patches your package.json file, goes through your app's node_modules directory and patches the dependencies to shim Node modules like https or crypto.

In the case of the crypto module, it requires a new dependency that uses native code, which would force you to eject from your Expo managed workflow.

This module does something very similar but without having to patch your app's dependencies and, IMO, is easier to set up.

How to use

1. Install the Stellar SDK and this wrapper

npm install stellar-sdk expo-stellar-sdk

2. Install the expo-random package using the Expo CLI tool

expo install expo-random

3. Create a metro.config.js file on your app's root directory containing

module.exports = {
  resolver: {
    extraNodeModules: require('expo-stellar-sdk/node-libs')
  }
};