Is it possible to map error traces back to source files?

[benjamingorman]

Hi, I'm using grunt-contrib-concat and have a question: Is there some way to map line numbers from an error stack trace back to the line number in the original source file pre-concatenation? Currently the stack traces I get just mention a line number in the concatenated file, but for ease of debugging I would prefer to see the number from the original file pre-concatenation.