Normalize middleware routes

lib/middleware.js

@@ -1,33 +1,33 @@
-const shimmer = require('shimmer');
-const { client } = require('./prom.js');
+const shimmer = require("shimmer");
+const { client } = require("./prom.js");
 
 const prefix = process.env.NEXTJS_PROMETHEUS_PREFIX + "_" ?? "";
 
 const httpRequestDurationSeconds = new client.Histogram({
   name: `${prefix}middleware_http_request_duration_seconds`,
-  help: 'Duration of HTTP requests to middleware in seconds',
-  labelNames: ['mw'],
+  help: "Duration of HTTP requests to middleware in seconds",
+  labelNames: ["mw"],
   buckets: [0.01, 0.03, 0.05, 0.1, 0.9, 1],
 });
 
 const httpRequestsTotal = new client.Counter({
   name: `${prefix}middleware_http_requests_total`,
-  help: 'Total number of HTTP requests to middleware',
-  labelNames: ['mw'],
+  help: "Total number of HTTP requests to middleware",
+  labelNames: ["mw"],
 });
 
 const httpErrorsTotal = new client.Counter({
   name: `${prefix}middleware_http_errors_total`,
-  help: 'Total number of HTTP errors in middleware',
-  labelNames: ['mw'],
+  help: "Total number of HTTP errors in middleware",
+  labelNames: ["mw"],
 });
 
 module.exports = function initialize(nextServer) {
   const Server = nextServer.default;
-  shimmer.wrap(Server.prototype, 'runMiddleware', function middlewareRecorder(originalMiddleware) {
+  shimmer.wrap(Server.prototype, "runMiddleware", function middlewareRecorder(originalMiddleware) {
     return async function wrappedMiddleware(...args) {
       const startTime = performance.now();
-      const middlewarePath = args[0].parsed.path
+      const middlewarePath = args[0].parsed.path.split("?")[0];
       let hasError = false;
       let result;
 
@@ -43,12 +43,11 @@ module.exports = function initialize(nextServer) {
 
         if (hasError) {
           httpErrorsTotal.labels(middlewarePath).inc();
-          return 
+          return;
         }
       }
 
-
       return result;
     };
   });
-};
+};

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nextjs-prometheus",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "Observability of a nextjs application w/ Prometheus",
   "main": "index.js",
   "publishConfig": {