Added support to stop next middleware processing upon options.stopNext=true

README.md

@@ -32,6 +32,7 @@ var options = {
   protocol: 'http',                 // optional, default: this.protocol
   host: 'www.risingstack.com'       // optional, default: this.host,
   prerenderToken: ''                // optional or process.env.PRERENDER_TOKEN
+  stopNext: true                   // optional, if true it will not allow next middleware to continue and instead return the response.
 };
 
 // Use as middleware

index.js

@@ -82,10 +82,6 @@ function shouldPreRender (options) {
     return options.url.indexOf(extension) !== -1;
   });
 
-  var isBot = crawlerUserAgents.some(function (crawlerUserAgent) {
-    return options.userAgent.toLowerCase().indexOf(crawlerUserAgent.toLowerCase()) !== -1;
-  });
-
   // do not pre-rend when:
   if (!options.userAgent) {
     return false;
@@ -95,6 +91,10 @@ function shouldPreRender (options) {
     return false;
   }
 
+  var isBot = crawlerUserAgents.some(function (crawlerUserAgent) {
+    return options.userAgent.toLowerCase().indexOf(crawlerUserAgent.toLowerCase()) !== -1;
+  });
+
   if (hasExtensionToIgnore) {
     return false;
   }
@@ -167,7 +167,9 @@ module.exports = function preRenderMiddleware (options) {
 
       body = response[1] || '';
 
-      yield* next;
+      if (!options.stopNext) {
+        yield * next;
+      }
 
       this.body = body.toString();
       this.set('X-Prerender', 'true');

package.json

@@ -1,6 +1,6 @@
 {
   "name": "koa-prerender",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "",
   "main": "index.js",
   "scripts": {