Function pickOnlyExistingValues

lib/utils/index.js:1615–1625

* Returns a new object with key values from source based on the keys. * `null` or `undefined` values are not copied. * @private * @param {object} source The object to pick values from. * @param {...string} keys One or more keys to copy from source. * @return {object} A new object with the requi

(source, ...keys)

 */

function pickOnlyExistingValues(source, ...keys) {
  let result = {};
  if (source) {
    keys.forEach((key) => {
      if (source[key] != null) {
        result[key] = source[key];
      }
    });
  }
  return result;
}

/**
 * Returns a JSON array as String.