feat: define customFilter based on tt_publish_at data in fsxa.config

fsxa.config.ts

@@ -1,3 +1,5 @@
+import { CustomFilter } from 'fsxa-api/dist/types'
+
 export default {
   devMode: false,
   defaultLocale: 'de_DE',
@@ -9,5 +11,18 @@ export default {
     loader: '~/components/fsxa/Loader',
     page404: '~/components/fsxa/Page404'
   },
-  customRoutes: '~/customRoutes'
+  customRoutes: '~/customRoutes',
+  customFilter: ((items) =>
+    items.filter((item) => {
+      if (typeof item === 'object' && 'data' in (item as object)) {
+        const publishAt: string | undefined = (item as Record<'data', any>).data
+          .tt_publish_at
+        const published =
+          !publishAt || new Date(publishAt).getTime() - Date.now() <= 0
+
+        return published
+      }
+
+      return true
+    })) as CustomFilter
 }