Buffer to parse a hex string preventing Expo usage about otplib HOT 1 OPEN

if (!global.Buffer) {
  global.Buffer = {} as typeof global.Buffer;

  global.Buffer.from = (...args: any[]): any => {
    const hexString = args[0] as string;
    const length = hexString.length;
    const uint8Array = new Uint8Array(length / 2);

    for (let i = 0, j = 0; i < length; i += 2, j++) {
      uint8Array[j] = parseInt(hexString.substring(i, i + 2), 16);
    }
    return uint8Array;
  };
}