Why am I not seeing a stack trace with 'throw new Error'?

Question

Why am I getting the following error with this simple code below when testing on a node server?

code/app2/i.js:35
        throw new Error("here")
              ^
Error: here

I'm actually expecting to see a stack trace as per the book 'Smashing node.js' (picture of the relevant page 35):

* node uncaught-http-js

/uncaught-http.js:4
  throw new Error("here");
        ^
Error: This will be uncaught
    at Server.<anonymous> (/uncaught-http.js:4:9)
    at Server.emit(events.js:70:17)
    at HttpParser.onIncoming(http.js:1514:12)
    at HttpParser.onHeadersComplete(http.js:102:31)
    at Socket.andata (http.js:1410:22)
    at TCP.onread(net.js:354:27)

but that's not happening.

Here's the code.

function c () {
    b();
};
function b () {
    a();
};

function a () {
    setTimeout(function () {
        throw new Error('here');
    }, 10);
};

c();

Answer 1

You don't see the whole stack trace because you throw an error in A() asynchronously (using setTimeout). If you throw it synchronously - you'll see the trace c()->b()->a().

Try it: http://jsbin.com/yirorimewe/1/edit?js,console

Answer 2

This is what your code does: It calls method 'c', which calls method 'b', which calls method 'a', which throws an error (inside method 'a' there is a throw error statement).

What you've posted is the stack trace (it shows you the line in the file where the error occurred).