Not very dry code in the handler

[finnhodgkin]

const getData = (req, res, url) => {
  getDataDb(url.query, (err, result) => {
    if (err) handleError(err, res);
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify(result));
  });
};
const getDataAll = (req, res, url) => {
  getDataAllDb(url.query, (err, result) => {
    if (err) handleError(err, res);
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify(result));
  });
};
const postData = (req, res, url) => {
  console.log('in postData handler.');
  // console.log('postdata urlobject is ', url);
  postDataDb(url.query, (err, result) => {
    if (err) handleError(err, res);
    res.writeHead(200, { 'Content-Type': 'application/javascript' });
    res.end(result);
  });
};

Is the same as:

const query = (req, res, url, queryFunction) => {
  queryFunction(url.query, (err, result) => {
    if (err) return handleError(err, res);
    res.writeHead(200, { 'Content-Type': 'application/javascript' });
    res.end(JSON.stringify(result));
  });
};

const getData = (req, res, url) => query(req, res, url, getDataDb);
const getDataAll = (req, res, url) => query(req, res, url, getDataAllDb);
const postData = (req, res, url) => query(req, res, url, postDataDb);