How to use the node-fetch.call function in node-fetch

module.exports = function (url, options) {
  if (/^\/\//.test(url)) {
    url = 'https:' + url
  }
  return realFetch.call(this, url, options)
}

module.exports = function fetch(url, options) {
    if (/^\/\//.test(url)) {
        url = `https:${url}`;
    }

    return realFetch.call(this, url, options);
};

module.exports = function(url, options) {
	if (/^\/\//.test(url)) {
		url = 'https:' + url;
	}
	return realFetch.call(this, url, options);
};

global.fetch = function fetch(url, options) {
    const normalized = (/^\/\//).test(url) ? `https:${url}` : url
    return realFetch.call(this, normalized, options)
  }
  global.Response = realFetch.Response

module.exports = (url, options) => {
  const secureUrl = (/^\/\//.test(url))
    ? `https:${url}`
    : url;
  return realFetch.call(this, secureUrl, options);
};

function wrappedFetch(url: string | Request, options) {
  if (typeof url !== 'string') {
    return nodeFetch.call(this, url, options);
  }

  const finalURL = url.startsWith('//') ? `https:${url}` : url;
  return nodeFetch.call(this, finalURL, options);
}

function wrappedFetch(url: string | Request, options) {
  if (typeof url !== 'string') {
    return nodeFetch.call(this, url, options);
  }

  const finalURL = url.startsWith('//') ? `https:${url}` : url;
  return nodeFetch.call(this, finalURL, options);
}