Concat minified files with source map results in line offset

[fsmeier]

Hi,
even if i think this repo is not maintained anymore maybe anyone has the same problem and maybe anyone found a solution already:

I am concatenating multiple files, some of them are minified and have links to a sourcemap. Like zxcvbn or jquery.min.js. When I concat them and validate the source-map it have an offset in the lines after the sections with the source-map-comments.

Anybody else has this problem?

[tienslebienz]

I added this line to fix the issue.
I guess concat assume there were no extra line at the end of the file

options: {
    process: src => src.slice(0, -1),
},