[Headless SSR Proxy] Fix shape of config object - additional fixes (#992

)

* Updated link for performance/caching in headless proxy
* Export ProxyConfig which can be used in the typescript-based app.
* createViewBag returns an object or promise, before it was only promise

packages/create-sitecore-jss/src/templates/node-headless-ssr-proxy/index.js

@@ -3,7 +3,7 @@ const compression = require('compression');
 require('dotenv').config();
 const scProxy = require('@sitecore-jss/sitecore-jss-proxy').default;
 const config = require('./config');
-const cacheMiddleware = require('./cacheMiddleware');
+// const cacheMiddleware = require('./cacheMiddleware');
 
 const server = express();
 const port = process.env.PORT || 3000;
@@ -24,7 +24,7 @@ server.use(
 
 /**
  * Output caching, can be enabled,
- * Read about restrictions here: {@link https://jss.sitecore.com/docs/techniques/performance/caching}
+ * Read about restrictions here: {@link https://doc.sitecore.com/xp/en/developers/hd/190/sitecore-headless-development/caching-in-headless-server-side-rendering-mode.html}
  */
 // server.use(cacheMiddleware());
 

packages/sitecore-jss-proxy/src/ProxyConfig.ts

@@ -64,8 +64,7 @@ export interface ProxyConfig {
     response: ServerResponse,
     proxyResponse: IncomingMessage,
     layoutServiceData: LayoutServiceData
-  ) => // eslint-disable-next-line @typescript-eslint/ban-types
-  Promise<object>;
+  ) => Promise<{ [key: string]: unknown }> | { [key: string]: unknown };
   /** Hook to alter HTTP headers in a custom way. */
   setHeaders?: (
     request: IncomingMessage,

packages/sitecore-jss-proxy/src/index.ts

@@ -575,3 +575,5 @@ export default function scProxy(
   const options = createOptions(renderer, config, parseRouteUrl);
   return proxy(options);
 }
+
+export { ProxyConfig };