Befuddled

huh.js

// I wrote wrong1 vs right1 to demonstrate automatic semicolon insertion. So far so good.

function wrong1(x) {
    return
    {
        upper: x + 1
    };
}

function right1(x) {
    return {
        upper: x + 1
    };
}

// But I also had tried the same example with *two* fields in the object. But this is a parse error. Why?

function wrong2(x) {
    return
    {
        upper: x + 1,
        lower: x - 1
    };
}

function right2(x) {
    return {
        upper: x + 1,
        lower: x - 1
    };
}