How to compile libraries into one file?

Question

JavaScript

Backbone project. I collect all auxiliary libraries in a separate file (assets.js) with the gulp-requirejs plugin.
The problem is connecting the socket.io library. Everything is going fine, but in the browser in the console it gives an error - "Uncaught Error: Mismatched anonymous define () module". The error is 100% due to sockets, because without it it is assembled and works fine.
I bring the section of the gallp config for assembly.

gulp.task("assets_js", ['assets_example_copy'], function() {
  rjs({
    baseUrl: "www",
    mainConfigFile: "config/libConfig.js",
    name: "js/assets",
    out: "assets.js",
    generateSourceMaps: false,
    keepAmdefine: true,
    preserveLicenseComments: true,
    uglify: {
      beautify: false,
      compress: true
    },
    mangle: true,
    deps: [
    'jquery',
    'i18n',
    'json',
    'datepicker',
    'iosbugfix',
    'fastclick',
    'underscore',
    'backbone',
    'marionette',
    'iobind',
    'subroute',
    'async',
    'timezone',
    'moment',
    'clustering',
    'semantic',
    'markerwithlabel',
    'socket.io'
    ],
    insertRequire: [
      'underscore',
      'backbone',
      'subroute',
      'marionette',
      'iobind',
      'timezone',
      'moment',
      'socket.io'
      ]
  })
  .pipe(gulp.dest("www/js/"));
});