react-native-pkce-challenge/lib/module/generate-random-bytes.native.js

Proof Key for Code Exchange (PKCE) challenge generator for React Native

"use strict";

import { NativeModules } from 'react-native';
import { getRandomBase64StringFallback, BYTE_LENGTH } from "./utils.js";
import PkceChallenge from "./NativePkceChallenge.js";
export default function generateRandomBytes() {
  const globalObject = global;
  if (globalObject?.ExpoModules?.ExpoRandom) {
    return globalObject.ExpoModules.ExpoRandom.getRandomBase64String(BYTE_LENGTH);
  }
  if (globalObject?.ExpoModules?.ExpoCrypto) {
    return globalObject.ExpoModules.ExpoCrypto.getRandomBase64String(BYTE_LENGTH);
  }
  if (NativeModules.ExpoRandom) {
    return NativeModules.ExpoRandom.getRandomBase64String(BYTE_LENGTH);
  }
  if (NativeModules.ExpoCrypto) {
    return NativeModules.ExpoCrypto.getRandomBase64String(BYTE_LENGTH);
  }
  if (PkceChallenge?.getRandomBase64String) {
    return PkceChallenge.getRandomBase64String(BYTE_LENGTH);
  }
  return getRandomBase64StringFallback(BYTE_LENGTH);
}
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