lodash helpers - rename (renames object keys)

rename.js

/*
* var person = { firstName: 'bill', lastName: 'johnson' }
* 
* person = _.rename(person, 'firstName', 'first')
* person = _.rename(person, 'lastName', 'last')
*
* console.log(person) // { first: 'bill', last: 'johnson' }
*/

_.rename = function(obj, key, newKey) {
  
  if(_.includes(_.keys(obj), key)) {
    obj[newKey] = _.clone(obj[key], true);

    delete obj[key];
  }
  
  return obj;
};

I think this function should preserve the input parameter

export const rename = (obj, key, newKey) => {
  const newObj = { ...obj };
  if(_.includes(_.keys(newObj), key)) {
    newObj[newKey] = _.clone(newObj[key], true);

    delete newObj[key];
  }

  return newObj;
};