[node] ensure compatiblity between http.request and url.parse (#40430)

* [node] ensure compatiblity between http.request and url.parse

Ensure that output of url.parse() fits into http.request() as
indicated at https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_http_request_url_options_callback

* fix typo

Co-Authored-By: Trivikram Kamat <16024985+trivikr@users.noreply.github.com>

types/node/http.d.ts

@@ -69,18 +69,18 @@ declare module "http" {
     }
 
     interface ClientRequestArgs {
-        protocol?: string;
-        host?: string;
-        hostname?: string;
+        protocol?: string | null;
+        host?: string | null;
+        hostname?: string | null;
         family?: number;
-        port?: number | string;
+        port?: number | string | null;
         defaultPort?: number | string;
         localAddress?: string;
         socketPath?: string;
         method?: string;
-        path?: string;
+        path?: string | null;
         headers?: OutgoingHttpHeaders;
-        auth?: string;
+        auth?: string | null;
         agent?: Agent | boolean;
         _defaultAgent?: Agent;
         timeout?: number;

types/node/test/http.ts

@@ -139,6 +139,8 @@ import * as net from 'net';
     http.request({ agent: false });
     http.request({ agent });
     http.request({ agent: undefined });
+    // ensure compatibility with url.parse()
+    http.request(url.parse("http://www.example.org/xyz"));
 }
 
 {