Refactor RouteNode → flatten for better readability

lib/route-node.js

@@ -48,27 +48,30 @@ assign(RouteNode.prototype, {
   get: function get(parts, args, done) {
     parts = parts || []
     args = args || []
-
     if (parts.length === 0) {
       return done(null, this.handler, this.context, args)
     }
+
     var part = parts.shift()
-    var childNode = this._children[part]
-    if (childNode) {
-      return childNode.get(parts, args, done)
-    } else {
+
+    // Check exact matches
+    if (this._children[part]) {
+      return this._children[part].get(parts, args, done)
+    }
+
+    // Check regex matches
     var results = this._getRegexChild(part)
     if (results && results.node) {
       return results.node.get(parts, args.concat(results.args), done)
-      } else {
+    }
+
+    // Check function matches
     results = this._getFunctionChild(part)
     if (results && results.node) {
       return results.node.get(parts, args.concat(results.args), done)
-        } else {
-          return done(new Error('not found'))
-        }
-      }
     }
+
+    return done(new Error('not found'))
   },
 
   _getRegexChild: function _getRegexChild(part) {