Why is there no stack in Promise RSVP in error?

Question

JavaScript

I use RSVP for promises. In this library, you can specify one error handler and everything seems to be fine, BUT! there is no stack in the error object where this error came from.
On the site of the module , it is recommended to use the following construction:

rsvp.on('error', function(reason) {
            console.assert(false,reason);
        });

which I did. but the point is that there is no stack in reason. More precisely, the stack of the place where the console.assert failed was issued
, that is, that's what's on the stack

AssertionError: [Error]
    at Console.assert (console.js:102:23)
    at ...
    at Object.exports.default.trigger ...
    at Promise._onerror ...
    at publishRejection ...
    at flush ...
    at process._tickCallback (node.js:419:13)
    at Function.Module.runMain (module.js:499:11)
    at startup (node.js:119:16)
    at node.js:906:3

The error is called like thisthrow new Error();

Answer 1

in the end, I'm just a brake. stack is inreason.stack