fix: remove unnecessary URL allocation (#2554)

src/app.ts

@@ -203,6 +203,7 @@ export class App<State> {
       const { params, handlers } = matched;
       const ctx = new FreshReqContext<State>(
         req,
+        url,
         conn,
         params,
         this.config,

src/context.ts

@@ -111,14 +111,15 @@ export class FreshReqContext<State>
 
   constructor(
     req: Request,
+    url: URL,
     info: Deno.ServeHandlerInfo | Deno.ServeUnixHandlerInfo,
     params: Record<string, string>,
     config: ResolvedFreshConfig,
     next: FreshContext<State>["next"],
     islandRegistry: ServerIslandRegistry,
     buildCache: BuildCache,
   ) {
-    this.url = new URL(req.url);
+    this.url = url;
     this.req = req;
     this.info = info;
     this.params = params;

src/test_utils.ts

@@ -78,6 +78,7 @@ export function serveMiddleware<T>(
 
     const ctx = new FreshReqContext<T>(
       req,
+      new URL(req.url),
       DEFAULT_CONN_INFO,
       {},
       config,

www/routes/thanks.tsx

@@ -5,8 +5,7 @@ import { define } from "../utils/state.ts";
 
 export const handler = define.handlers({
   GET(ctx) {
-    const url = new URL(ctx.req.url);
-    const search = new URLSearchParams(url.search);
+    const search = new URLSearchParams(ctx.url.search);
     const vote = search.get("vote");
     return page({ vote });
   },