JavaScript native Promise() without callback

Question

Look at this jQuery code:

var promise = new Deferred(),
    some;

some = function(promise) {
    // do cool things

    promise.resolve();
};

promise.then(/*  callback cool things   */);

// init everything
some(promise);

I am not sure about architecture correctness of such approach, but I used it for long time and it is convenient for me.

In native JavaScript I can not use such approach. Constructor new Promise() requires a callback parameter, so I can not pass instance of Promise as a parameter.

So my question is: how can I predefine JavaScript native promise, pass it as a parameter to function and the resolve?

Answer 1

The execution flow would be a little different, but basically work the same way:

function some(resolve, reject) {
    resolve();
}

var promise = new Promise(some);

promise.then(/*  callback cool things   */);

Instead of some getting passed the promise itself, it gets passed the resolve and reject functions. So, the dependency is just the other way round.