Simplify server config

server/middleware/checkBlacklist.js

@@ -1,13 +1,13 @@
+const blacklist = require('../PackageBlacklist').blacklist
+
 /**
  * Check the blacklist to see if we can serve files from this package.
  */
-function checkBlacklist(blacklist) {
-  return function (req, res, next) {
-    if (blacklist.includes(req.packageName)) {
-      res.status(403).send(`Package ${req.packageName} is blacklisted`)
-    } else {
-      next()
-    }
+function checkBlacklist(req, res, next) {
+  if (blacklist.includes(req.packageName)) {
+    res.status(403).send(`Package ${req.packageName} is blacklisted`)
+  } else {
+    next()
   }
 }