fix: make /health endpoint trailing-slash tolerant

src/handler.ts

@@ -107,7 +107,7 @@ function lengthHandler(mgr: QueueManager<string>): RouteHandler {
 }
 
 function registerRoutes(router: Router, mgr: QueueManager<string>): void {
-    router.get("/health", () => {
+    router.get("/health{/}?", () => {
         return new Response(JSON.stringify({ status: "ok" }), {
             status: 200,
             headers: { "Content-Type": "application/json" },

src/middleware.ts

@@ -3,7 +3,7 @@ import { RateLimiter } from "./rate_limiter.ts";
 export type HttpHandler = (request: Request, info?: Deno.ServeHandlerInfo) => Promise<Response> | Response;
 export type Middleware = (next: HttpHandler) => HttpHandler;
 
-const HEALTH_PATTERN = new URLPattern({ pathname: "/health" });
+const HEALTH_PATTERN = new URLPattern({ pathname: "/health{/}?" });
 
 export function withAuth(apiToken: string): Middleware {
     return (next: HttpHandler) => {

tests/handler_test.ts

@@ -262,6 +262,13 @@ Deno.test("response body: health returns {status:ok} JSON", async () => {
     assertEquals(await res.json(), { status: "ok" });
 });
 
+Deno.test("response body: health trailing slash returns {status:ok} JSON, no auth required", async () => {
+    const handler = makeHandler();
+    const res = await handler(new Request("http://localhost/health/"));
+    assertEquals(res.status, 200);
+    assertEquals(await res.json(), { status: "ok" });
+});
+
 Deno.test("response body: health POST returns 'Method not allowed'", async () => {
     const handler = makeHandler();
     const res = await handler(new Request("http://localhost/health", { method: "POST" }));