function transformKeysToCamelCase (obj) {
  var keys = Object.keys(obj);
  var camelCaseObj = {};
  keys.forEach(function (key) {
    var camelCaseKey = toCamelCase(key);
    camelCaseObj[camelCaseKey] = obj[key];
  });
  return camelCaseObj;
}
Converts object's keys from hyphens to camelCase (e.g., `max-value` to
`maxValue`).

@param {object} obj - The object to camelCase keys.
@return {object} The object with keys camelCased.