update-deep-copy/dist/index.js

Deep copy and update object

"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

var clone = require("lodash.clonedeep");

module.exports = function (object, changeSet) {
  var cloneObject = clone(object);
  return changeSet ? update(cloneObject, changeSet) : cloneObject;
};

function update(obj, changeSet) {
  var updateReduce = function updateReduce(state, key) {
    var change = changeSet[key];

    if (typeof change === "undefined") {
      delete state[key];
      return state;
    }

    if (!change) {
      state[key] = change;
      return state;
    }

    if (_typeof(change) === "object" && !Array.isArray(change)) {
      state[key] = update(state[key], change);
      return state;
    }

    state[key] = clone(change);
    return state;
  };

  return Object.keys(changeSet).reduce(updateReduce, obj || {});
}