how to use object spread syntax in chrome dev tools

Question

I started using object spread syntax to safely make a copy of the object while following immutability principles.

I want to use it in chrome developer console - how to do this:

Answer 1

You can enable the javascript experiments flag on: chrome://flags/#enable-javascript-harmony to enable web pages to use experimental JavaScript features including the Rest / Spread.

Answer 2

Object spread is available in all modern browsers (since Chrome 60) and can be used like this:

{...{foo: 'bar'}, john: 'doe'}

And will return: {foo: "bar", john: "doe"}