index.ts

// polyfills
import { install } from 'react-native-quick-crypto';
install();

// TextEncoder/TextDecoder polyfill (required for jose)
import FastEncoder from 'react-native-fast-encoder';
class TextEncoderPolyfill {
  encode(input: string): Uint8Array {
    const encoder = new FastEncoder();
    return encoder.encode(input);
  }
}
class TextDecoderPolyfill {
  private encoder: FastEncoder;
  constructor(_encoding: string = 'utf-8') {
    this.encoder = new FastEncoder(_encoding);
  }
  decode(input: Uint8Array): string {
    return this.encoder.decode(input);
  }
}
global.TextEncoder = TextEncoderPolyfill as unknown as typeof TextEncoder;
global.TextDecoder = TextDecoderPolyfill as unknown as typeof TextDecoder;

// structuredClone polyfill (required for jose)
if (typeof global.structuredClone === 'undefined') {
  global.structuredClone = <T>(obj: T): T => JSON.parse(JSON.stringify(obj));
}

// event-target-shim
import 'event-target-polyfill';

// readable-stream
if (global.process == null) {
  // @ts-expect-error - process is not defined
  global.process = {};
}
if (global.process.version == null) {
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  (global.process as any).version = 'v22.0.0';
}

import { AppRegistry } from 'react-native';
import App from './src/App';
import { name as appName } from './app.json';

AppRegistry.registerComponent(appName, () => App);