export function createProxyUrl(proxy: {
  protocol: string;
  host: string;
  port: number;
  username?: string;
  password?: string;
}): string {
  const { protocol, host, port, username, password } = proxy;
  if (username && password) {
    return `${protocol}://${encodeURIComponent(username)}:${encodeURIComponent(password)}@${host}:${port}`;
  }
  return `${protocol}://${host}:${port}`;
}

export function sleep(ms: number): Promise<void> {
  return new Promise(resolve => setTimeout(resolve, ms));
}