How to output a deep stack trace in node.js?

Question

When a normal exception occurs, a stack trace like the following is outputted:

util.js:38       case '%s': return String(args[i++]);                         ^ TypeError: Cannot convert object to primitive value     at String (unknown source)     at util.js:38:25     at String.replace (native)     at Object.<anonymous> (util.js:35:23)     at Object.<anonymous> (console.js:25:36)     at EventEmitter.<anonymous> (/project/src/routines/debug/boot.js:16:21)     at EventEmitter.emit (/project/node_modules/eventemitter2/lib/eventemitter2.js:319:22)     at /project/src/bootstrap.js:15:14     at /project/src/util/routineloader.js:36:11     at /project/src/util/routineloader.js:47:6 

Which is very helpful. When I then do the following somewhere:

process.on('uncaughtException', function(err) {         console.trace();         throw err;     }); 

I only get:

Trace:      at EventEmitter.<anonymous> (/project/src/routines/debug/exceptions.js:4:17)     at EventEmitter.emit (events.js:88:20) 

Which is not helpful at all.

How do I make it return the entire stack trace, like the original one?

Answer 1

You're almost there:

process.on('uncaughtException', function(err) {   console.log(err.stack);   throw err; });  function foo() {   throw new Error("HI. I'm an error."); }  foo();  /* Prints Error: HI. I'm an error.     at foo (/Users/rye/Desktop/test.js:7:9)     at Object.<anonymous> (/Users/rye/Desktop/test.js:10:1)     at Module._compile (module.js:441:26)     at Object..js (module.js:459:10)     at Module.load (module.js:348:31)     at Function._load (module.js:308:12)     at Array.0 (module.js:479:10)     at EventEmitter._tickCallback (node.js:192:40) */