The really fun part is doing this :)...

Evaluate the expression:

    const x = {value: 0};
    console.log(x);
    console.log({x});
    x.value = 1;

You get this:

    {value: 0}
    {x: {…}}

Expand the first arrow of the `x:`:

    v {x: {…}}
     > x: {value: 1}

Now evaluate:

    x.value = 3

Then expand the second arrow:

    v {x: {…}}
     > x:
         value: 3

Now if you unexpand the arrow, you get 1, but if you expand it you get 3 =)... (Well at least in chrome)