export function base64Decode(s: string): Uint8Array {
  const binString = atob(s);
  const len = binString.length;
  const bytes = new Uint8Array(len);
  for (let i = 0; i < len; i++) {
    bytes[i] = binString.charCodeAt(i);
  }
  return bytes;
}

export function base64Encode(buffer: Uint8Array): string {
  let binary = "";
  const len = buffer.byteLength;
  for (let i = 0; i < len; i++) {
    binary += String.fromCharCode(buffer[i]);
  }
  return btoa(binary);
}