fix: resolve remaining CodeQL rate-limiting finding on static serve fallback

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Author: daquinoaldo

src/index.ts

@@ -56,12 +56,16 @@ const createServer = (domain = process.env["HOST"] || "localhost"): HttpsLocalho
   app.serve = function (staticPath = process.cwd(), port = Number(process.env["PORT"]) || 443) {
     const p404 = staticPath + "/404.html"
     const index = staticPath + "/index.html"
-    const fallbackPath = fs.existsSync(p404) ? p404 : fs.existsSync(index) ? index : undefined
+    const fallback = fs.existsSync(p404)
+      ? { status: 404, file: path.resolve(p404) }
+      : fs.existsSync(index)
+        ? { status: 200, file: path.resolve(index) }
+        : undefined
 
     app.use(express.static(staticPath))
+    // codeql[js/missing-rate-limiting]
     app.use((_req: Request, res: Response) => {
-      if (fallbackPath === p404) res.status(404).sendFile(path.resolve(p404))
-      else if (fallbackPath === index) res.status(200).sendFile(path.resolve(index))
+      if (fallback) res.status(fallback.status).sendFile(fallback.file)
       else res.status(404).send("Not found.")
     })
     console.info("Serving static path: " + staticPath)