Why does the browser throw an error after gulp has compiled a file?

Question

gulp.js

I connect the library via libs.js (gulp --> libs.min.js) as expected (

@@include('../libs/jquery-validation/dist/jquery.validate.js')

Before that, they are also connected, they work fine). Then the browser displays

Uncaught ReferenceError: module is not defined
at libs.min.js:1

.
I connect directly through html - it works.