Deep clone object

deep-clone-object.js

cloneObject = obj => {
    const clone = {};
    for(let i in obj) {
      if(obj[i] != null &&  typeof(obj[i]) === "object") {
        clone[i] = this.cloneObject(obj[i]);
      } else {
        clone[i] = obj[i];
      }
    }
    return clone;
  };
  
  const deepCloneObject = oldObj => {
  let newObj = oldObj;
  if (oldObj && typeof oldObj === 'object') {
    newObj = Object.prototype.toString.call(oldObj) === "[object Array]" ? [] : {};
    for (let i in oldObj) {
      newObj[i] = deepCloneObject(oldObj[i]);
    }
  }
  return newObj;
};