Update swagger.js

swagger.js

@@ -1,5 +1,7 @@
-var express = require('express');
-var getAbsoluteSwaggerFsPath = require("swagger-ui-dist").getAbsoluteFSPath();
+import express from 'express';
+import getAbsoluteSwaggerFsPath from "swagger-ui-dist"
+  .getAbsoluteFSPath();
+
 var favIconHtml = '<link rel="icon" type="image/png" href="./favicon-32x32.png" sizes="32x32" />' +
   '<link rel="icon" type="image/png" href="./favicon-16x16.png" sizes="16x16" />';
 var swaggerInit = '';
@@ -533,10 +535,10 @@ var stringify = function (obj, prop) {
   return 'var options = ' + json + ';'
 }
 
-module.exports = {
+export {
   setup,
   serve,
   serveWithOptions,
   generateHTML,
   serveFiles
-};
+};