IIFE. Exposing public variables

jquery-exposing-variables.js

( function( global, factory ) {
  if ( typeof module === "object" ) {
    module.exports = 
      global.document ? 
        factory( global, true ) : 
        function( w ) {
          if ( !w.document ) {
            throw new Error( "jQuery requires a window" );
          }
          return factory( w );
        };
 } else {
  factory( global );
 }
} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {
    jQuery = {};
    if ( !noGlobal ) {
        window.jQuery = window.$ = jQuery;
    }
});