Object deep cloning

const makeDeepClone = (obj) => { 
  let newObject = {};
  
  Object.keys(obj).map(key => { 
    if(typeof obj[key] === 'object'){ 
      newObject[key] = makeDeepClone(obj[key]); 
    } else { 
      newObject[key] = obj[key]; 
    } 
  }); 
  
 return newObject; 
}