provide argument option as already parsed url to http-proxy (#25164)

types/http-proxy/http-proxy-tests.ts

@@ -24,3 +24,11 @@ proxy.on("start", (req, res, target) => {
 http.createServer((req, res) => {
   proxy.web(req, res);
 });
+
+const newProxy = HttpProxy.createProxyServer({
+    target: {
+        host: 'localhost',
+        port: '9015'
+    },
+    ws: true
+});

types/http-proxy/index.d.ts

@@ -1,6 +1,8 @@
 // Type definitions for node-http-proxy 1.16
 // Project: https://github.com/nodejitsu/node-http-proxy
-// Definitions by: Maxime LUCE <https://github.com/SomaticIT>, Florian Oellerich <https://github.com/Raigen>
+// Definitions by: Maxime LUCE <https://github.com/SomaticIT>
+//                 Florian Oellerich <https://github.com/Raigen>
+//                 Daniel Schmidt <https://github.com/DanielMSchmidt>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
@@ -166,9 +168,9 @@ declare namespace Server {
     /** Buffer */
     buffer?: stream.Stream;
     /** URL string to be parsed with the url module. */
-    target?: string;
+    target?: ProxyTargetUrl;
     /** URL string to be parsed with the url module. */
-    forward?: string;
+    forward?: ProxyTargetUrl;
     /** Object to be passed to http(s).request. */
     agent?: any;
     /** Object to be passed to https.createServer(). */