Do not use Babel's register hook in production

modules/server/StatsUtils.js

@@ -0,0 +1,27 @@
+import redis from 'redis'
+import onFinished from 'on-finished'
+
+const URLFormat = /^\/((?:@[^\/@]+\/)?[^\/@]+)(?:@([^\/]+))?(\/.*)?$/
+
+export const logStats = (redisURL) => {
+  const redisClient = redis.createClient(redisURL)
+
+  return (req, res, next) => {
+    onFinished(res, () => {
+      const path = req.path
+
+      if (res.statusCode === 200 && path.charAt(path.length - 1) !== '/') {
+        //redisClient.zincrby([ 'request-paths', 1, path ])
+
+        const match = URLFormat.exec(path)
+
+        if (match) {
+          const packageName = match[1]
+          redisClient.zincrby([ 'package-requests', 1, packageName ])
+        }
+      }
+    })
+
+    next()
+  }
+}