Why is undefined being printed on console

Question

Here, I have two functions exactly the same
1)

  function al() {
    return 
    {   
        bar: "hello"
    };
}

console.log(al())

While running this on node this is printing, undefined While the same code, with diff bracket level, return the output
2)

function al() {
    return {   
        bar: "hello"
    };
}

console.log(al())

Please run on node.
Version 10.x