Ember Fastboot onVisit Middleware

fastboot-on-visit

// ember-cli-fastboot/index.js
 let fastbootMiddleware = FastBootExpressMiddleware({
+  onVisit: fastbootConfig.onVisit,
   fastboot: this.fastboot
 });

// fastboot-express-middleware/src/index.js
function fastbootExpressMiddleware(distPath, options) {

   return function(req, res, next) {
     let path = req.url;
-    fastboot.visit(path, { request: req, response: res })
+    let html = opts.onVisit && opts.onVisit(path)
+    fastboot.visit(path, { request: req, response: res, html })
       .then(success, failure);
       
       
 // fastboot-server/src/worker.js
 // passed down from src/fastboot-server.js
 
      return fastbootMiddleware({
-      fastboot: this.fastboot
+      fastboot: this.fastboot,
+      onVisit: this.onVisit
     });