B2B-88: add starter kit structure and elements

packages/cms/keystatic/src/keystatic-route-handler.ts

@@ -0,0 +1,29 @@
+import { makeRouteHandler } from '@keystatic/next/route-handler';
+
+import { keyStaticConfig } from './keystatic.config';
+
+const handlers = makeRouteHandler({
+  config: keyStaticConfig,
+});
+
+/**
+ * @name productionGuard
+ * @description Guard for production environment. Returns 404 if in production.
+ * @param routeHandler
+ */
+function productionGuard(routeHandler: (req: Request) => Promise<Response>) {
+  if (process.env.NODE_ENV === 'production') {
+    return new Response('Not found', { status: 404 });
+  }
+
+  return (req: Request) => routeHandler(req);
+}
+
+/**
+ * @name keystaticRouteHandlers
+ * @description Route handlers for keystatic
+ */
+export const keystaticRouteHandlers = {
+  POST: productionGuard(handlers.POST),
+  GET: productionGuard(handlers.GET),
+};