V8 JavaScript stack trace, what do the trailing numbers mean?

Question

Alright, so this might be a quick one... I am working in Node.js

I can't seem to figure out what do the trailing numbers in a stack trace mean.

at Function.findById (/home/.../node_modules/mongoose/lib/model.js:984:15)

I am refering to the "984:15"

I can tell the 1st one is the line number, but what does the "15" mean?

Apart from that, I have noticed that often times the line numbers point to something like "Data.js:6:2034" in my application code, only to find out that there is nothing at line "6", and the "2034" still making no sense.

Thanks!

Answer 1

It's the column number or char in that line.

Data.js:6:2034 - low line numbers, large char numbers indicate, that this is at least a compressed file (no whitespaces, no newlines etc).

A file like that should be treated with a formatter during debugging, otherwise it will be really hard.

Answer 2

It's the character number at that line number