How to use Object.values() on server side in Node.js

Object.values() is in status "Draft" for the version ECMAScript2017 and here the specification: ECMAScript 2017 Draft (ECMA-262) The definition of 'Object.values' in that specification..

The Object.values() method returns an array of a given object's own enumerable property values, in the same order as that provided by a for...in loop (the difference being that a for-in loop enumerates properties in the prototype chain as well).

Without change nothing in your NodeJS enviroment you can achive the same by using Object.keys() that returns an array of keys and chaining a Array.prototype.map() method to return the desired array of the Object's values:

const obj = { 
    foo: "bar", 
    baz: 42 
  },
  // Object.values()
  objValues = Object.values(obj),
  // Object.keys() and map(),
  objKeysMap = Object.keys(obj).map((k) => obj[k]);

console.log('objValues:', objValues);
console.log('objKeysMap:', objKeysMap);

Lodash is a pretty awesome tool to simplify your JavaScript code. You can use _.values:

var _ = require('lodash');
_.values({ a: 'a' }) // => ['a']

I am developing a AWS Lambda and now I stumbeled over the same problem and I solved it by this simple line (assuming a is the object) const values = Object.keys(a).map(k => a[k]);

3 alternative to go around if you don't want to upgrade node

1. mapping keys as in this answer
2. using lodash as another answer by @sakovias
3. using this object.values npm package

Here's a polyfill that kicks in only when it's not already defined:

const objectToValuesPolyfill = (object) => {
  return Object.keys(object).map(key => object[key]);
};
Object.values = Object.values || objectToValuesPolyfill;

Upgrade your Node.js to the latest version. It'll enable you to use

Object.values()

You can get it from the official site: https://nodejs.org/en/download/current/

It worked for me :)

Or use underscore.js

var _ = require('underscore');

const obj = { 
    foo: "bar", 
    baz: 42 
  };

console.log(_.values(obj));
// ["bar",42]