fix(proxy): append request query params for single proxy route rules

src/runtime/route-rules.ts

@@ -7,7 +7,7 @@ import {
 } from "h3";
 import defu from "defu";
 import { createRouter as createRadixRouter, toRouteMatcher } from "radix3";
-import { joinURL, withoutBase } from "ufo";
+import { joinURL, withQuery, getQuery, withoutBase } from "ufo";
 import { useRuntimeConfig } from "./config";
 import type { NitroRouteRules } from "nitropack";
 
@@ -42,6 +42,11 @@ export function createRouteRulesHandler() {
           targetPath = withoutBase(targetPath, strpBase);
         }
         target = joinURL(target.slice(0, -3), targetPath);
+      } else {
+        const query = getQuery(event.path);
+        if (query) {
+          target = withQuery(target, query);
+        }
       }
       return proxyRequest(event, target, {
         fetch: $fetch.raw as any,

test/fixture/api/echo.ts

@@ -0,0 +1,7 @@
+export default eventHandler((event) => {
+  return {
+    url: event.node.req.url,
+    method: event.node.req.method,
+    headers: event.node.req.headers,
+  };
+});

test/fixture/nitro.config.ts

@@ -55,6 +55,7 @@ export default defineNitroConfig({
     "/rules/_/noncached/**": { swr: false, cache: false, isr: false },
     "/rules/_/cached/noncached": { cache: false, swr: false, isr: false },
     "/rules/_/cached/**": { swr: true },
+    "/api/proxy": { proxy: "/api/echo" },
   },
   prerender: {
     crawlLinks: true,

test/tests.ts

@@ -2,7 +2,7 @@ import { resolve } from "pathe";
 import { listen, Listener } from "listhen";
 import destr from "destr";
 import { fetch, FetchOptions } from "ofetch";
-import { expect, it, afterAll } from "vitest";
+import { expect, it, afterAll, beforeAll } from "vitest";
 import { fileURLToPath } from "mlly";
 import { joinURL } from "ufo";
 import * as _nitro from "../src";
@@ -121,7 +121,7 @@ export function testNitro(
     };
   }
 
-  it("setup handler", async () => {
+  beforeAll(async () => {
     _handler = await getHandler();
   });
 
@@ -297,6 +297,17 @@ export function testNitro(
     }
   }
 
+  it("runtime proxy", async () => {
+    const { data } = await callHandler({
+      url: "/api/proxy?foo=bar",
+      headers: {
+        "x-test": 123,
+      },
+    });
+    expect(data.headers["x-test"]).toBe("123");
+    expect(data.url).toBe("/api/echo?foo=bar");
+  });
+
   it("app config", async () => {
     const { data } = await callHandler({
       url: "/app-config",