As discussed in sindresorhus/execa#15 (diff). How I think when coding is to handle errors and exceptions as soon as possible and return early. If we take a look at the two examples below, the latter one makes more sense to me. foobar() in this case is the "real" body while the code in the if statements deal with exceptions. When using the style in the former one, this isn't as clear to me.

if (conditon) {
    someFn();
} else if (someOtherCondition) {
    someOtherFn();
} else {
    foobar();
}

if (condition) {
    someFn();
    return;
}

if (someOtherCondition) {
    someOtherFn();
    return;
}

foobar();

This might be worth reading too http://blog.timoxley.com/post/47041269194/avoid-else-return-early.