Add configuration to allow sending credentials about js-pkce HOT 5 CLOSED

fetch("https://example.com/oauth/token", {
  "headers": {
    "accept": "application/json",
    "accept-language": "en,en-US;q=0.9",
    "content-type": "application/x-www-form-urlencoded;charset=UTF-8",
    "sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Google Chrome\";v=\"115\", \"Chromium\";v=\"115\"",
    "sec-ch-ua-mobile": "?0",
    "sec-ch-ua-platform": "\"macOS\"",
    "sec-fetch-dest": "empty",
    "sec-fetch-mode": "cors",
    "sec-fetch-site": "cross-site"
  },
  "referrer": "https://origin-server.anothersite.com",
  "referrerPolicy": "strict-origin-when-cross-origin",
  "body": "grant_type=authorization_code&code=xxx&client_id=myclientid&redirect_uri=https%3A%2F%2Forigin-server.anothersite.com%2Fcallback&code_verifier=xxx",
  "method": "POST",
  "mode": "cors",
  "credentials": "include"
});

    pkce.exchangeForAccessToken(url, {}, { credentials: 'include' }).then((resp) => {
      const token = resp.access_token;
      // Do stuff with the access token.
      console.log('the token', token)
    });