Convert an array of json objects to an object. I KNOW!

transformArrayToObject.js

var a = [{"id": 42, "name": "TALLA", "companyId": 40, "createdAt": "2017-02-13T21:51:15.000Z", "updatedAt": "2017-02-13T21:51:15.000Z", "flagActive": 1}, {"id": 37, "name": "TELA", "companyId": 40, "createdAt": "2017-02-13T21:23:11.000Z", "updatedAt": "2017-02-13T21:23:11.000Z", "flagActive": 1}, {"id": 38, "name": "TIPO DE PRENDA", "filterable": true}, {"id": 39, "name": "MODELO", "filterable": true}, {"id": 41, "name": "COLOR", "filterable": true}, {"id": 40, "name": "MANGA", "filterable": true}]

function transformArrayToObject(array) {
  var b = {};
  array.forEach((item, index) => {
   var keys = Object.keys(item);
   b[item.id] = {};
   keys.forEach((key) => {
    b[item.id][key] = item[key];
   });
  });
  return b;
}

console.log(transformArrayToObject(a))

transformObjectToArray.js

var obj = {
	42: {
		"id": 42,
		"name": "TALLA",
	},
	37: {
		"id": 37,
		"name": "TELA",
	},	
};

function convertObjectToArray(obj) {
  var array = [];
  var keys = Object.keys(obj);
  keys.forEach((key) => {
    var objKeys = Object.keys(obj[key]);
    var newObj = {};
    objKeys.forEach((propertyName) => {
      newObj[propertyName] = obj[key][propertyName];
    });
    array.push(newObj);
  });
  return array;
}

console.log(convertObjectToArray(obj));