pluck.js

/**
 *
 * @param {Object} obj - base object
 * @param {string} prop - property path
 * @returns {*}
 */
function getProperty(obj, prop) {
  return prop.split('.')
      .reduce((m, i) => m && typeof m === 'object' ? m[i] : null, obj);
}

/**
 *
 * @param {Array} itemList - base array
 * @param {string|Array<string>} pluckStrings - path or path array
 * @returns {Array}
 */
function pluck(itemList, pluckStrings) {
	const pathList = Array.isArray(pluckStrings) ? pluckStrings : [pluckStrings];

	return itemList.reduce(
	  (items, item) => {  
  		for (let i = 0; i < pathList.length; i++) {
  		  const path = pathList[i].trim();
  		  const prop = getProperty(item, path);
  
  		  if (prop) {
  			  return items.concat(prop);
  		  }
  		}
  
  		return items;
	  },
	  []
	);
}

let users = [
   {name: 'Victor Queiroz'},
   {name: 'João Bosco'},
   {nickname: {myNickname: 'Ruan Jordão'}}
 ];

pluck(users, ['name', 'nickname.myNickname'])