Optional chaining doesn’t work on Node 16.4

I have tried this syntax in VSCode and Coderpad (both use Node version 16.4).

let x = {}
x?.something.foo

As far as my understanding goes, this code shouldn’t throw an error now, but return undefined. The feature optional chaining should be available in Node v14+ but for some reason it doesn’t work in my VSCode and also in Coderpad.

Thought why?