Hi all,

I'm trying to wrap my head around derived promises and wanted to ask for a bit of clarification around how `Promise.resolve()` works from a derived class. Consider this:

```
class MyPromise extends Promise {}

var p1 = new Promise(function(resolve, reject) {
    resolve(42);
});

var p2 = MyPromise.resolve(p1);
p2.then(function(value) {
    console.log(value);
});
```

Am I correct in believing that:

1. `p1` is resolved upon being passed to `MyPromise.resolve()`? I believe this is what happens in 25.4.4.5 Step 6 (http://www.ecma-international.org/ecma-262/6.0/#sec-promise.resolve) 2. `p2` is an instance of `MyPromise` that is resolved with a promise value of 42.

Thanks!

--
___________________________
Nicholas C. Zakas
http://www.nczonline.net

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