A deep cloning using JavaScript.

clone.js

const { keys } = Object
const { isArray } = Array

/**
 * @param {any} fragment 
 */
function applyCloningElement(fragment) {
  if (typeof fragment !== 'object') {
    return fragment
  }

  if (typeof fragment === 'object' && isArray(fragment)) {
    const arrayOfFragments = []
    fragment.forEach((value) => {
      arrayOfFragments.push(typeof value === 'object' ? clone(value) : value)
    })

    return arrayOfFragments
  }

  return clone(fragment)
}

/**
 * @module Clone
 * @description
 * Clone all properties from an object giving it to deepCopy.
 */

/**
 * @param {object} source
 * @returns {object}
 */
function clone (source) {
  let clone = {}
  /**
   * If the @argument source is not an object, we return a simply object.
   */
  if (typeof source !== 'object') {
    return {}
  }

  keys(source).forEach((key) => {
    const currentKeyFragment = source[key]
    clone[key] = applyCloningElement(currentKeyFragment)
  })

  return clone
}

module.exports = clone