Can uglify combine the js of the sub-modules into one, and then the combined js can run normally?

  node.js, question

I wrote a js, which uses other js modules. Can this module be combined into one and still function normally?

 .pipe(gulpif(production,uglify({ mangle:false })))

The above code uses gulp to merge multiple files into one, and uses uglify to confuse them in production mode.