Re-throwing exception in NodeJS and not losing stack trace

Question

How can I rethrow an error or exception in nodejs/javascript and include a custom message.

I have the following code

var json = JSON.parse(result);
         


        

Answer 1

you can also just continue to throw the error up your try chain. If you want to modify anything do so along the way: before the throw statement in b.

function a() {
    throw new Error('my message');
}

function b() {
    try {
        a();
    } catch (e) {
        // add / modify properties here
        throw e;
    }
}

function c() {
    try {
        b();
    } catch (e) {
        console.log(e);
        document.getElementById('logger').innerHTML = e.stack;
    }
}
c();