How to stop automatic resolution of Promise objects?

Question

Consider this code:

function foo() {
    return promiseFoo.then((res) => {
        //...
        //Construct a `promiseBar` object which is promise-like, 
        //but also has other uses.
        //...
        return promiseBar;
    });
}

foo().then((res) => {
    //Because `promiseBar` is promise-like, it was automatically resolved.
    //So now, `res` is, for example, a primitive string instead of the 
    //original `promiseBar` object
})

Is there any way to prevent the automatic resolution of promise-like objects?

Answer 1

You would wrap it in a container object and then open it with destructuring:

function foo() {
    return promiseFoo.then((res) => {
        //...
        //Construct a `promiseBar` object which is promise-like, 
        //but also has other uses.
        //...
        return [promiseBar];
    });
}

foo().then(([res]) => {
    //Because it is an array, promiseBar is not resolved here
});

To be fair, I've never actually had to do this myself in a few years of using promises, so I'm wondering what you're actually doing - please do share.