move bundleRenderer to renderRoute with proper timeout

lib/renderer.js

@@ -128,15 +128,6 @@ export default class Renderer extends Tapable {
   }
 
   async render (req, res) {
-    /* istanbul ignore if */
-    if (!this.bundleRenderer || !this.resources.appTemplate) {
-      return new Promise((resolve) => {
-        setTimeout(() => {
-          resolve(this.render(req, res))
-        }, 1000)
-      })
-    }
-
     // Get context
     const context = getContext(req, res)
     res.statusCode = 200
@@ -240,7 +231,20 @@ export default class Renderer extends Tapable {
     }
   }
 
-  async renderRoute (url, context = {}) {
+  async renderRoute (url, context = {}, ctr = 0) {
+    /* istanbul ignore if */
+    if (!this.bundleRenderer || !this.resources.appTemplate) {
+      if (ctr > 5) {
+        // Don't wait more than 5 seconds
+        return Promise.reject(new Error('bundleRenderer is not ready'))
+      }
+      return new Promise((resolve) => {
+        setTimeout(() => {
+          resolve(this.renderRoute(url, context, ctr++))
+        }, 1000)
+      })
+    }
+
     // Log rendered url
     debug(`Rendering url ${url}`)