TypeError: Object.entries is not a function

I copied and pasted the following code into a blank WebStorm javascript project:

var obj = {a: 5, b: 7, c: 9};
Object.entries(obj).forEach(([key, value]) => {
    console.log(key + ' ' + value); // "a 5", "b 7", "c 9"
});

this code is copied from the example code on MDN for the Global Object entries method. It works fine when pasted into a CodePen, but throws this error in Webstorm:

/usr/local/bin/node /Users/Scott/Projects/JavaScript/test.js
/Users/Scott/Projects/JavaScript/test.js:2
Object.entries(obj).forEach(([key, value]) => {
^

TypeError: Object.entries is not a function
at Object.<anonymous> (/Users/Scott/Projects/JavaScript/test.js:2:8)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:389:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:504:3

Process finished with exit code 1

What am I doing wrong in my IDE/Project configuration? This is a built-in Javascript method and I'm running into the same error with other methods of the Global Object. e.g. 

console.log(Object.values(obj));