move mapping functions out of try catch

src/scrape.js

@@ -18,14 +18,15 @@ const options = parse_args(process.argv.slice(2));
   try {
     events = await get_page_events(options);
     prev_events = await read_previous_events(options.events);
-    events = events
-      .reduce(to_unique_events, prev_events)
-      .map(event_date_to_date_obj)
-      .sort(by_date);
   } catch (e) {
     console.error(e);
   }
 
+  events = events
+    .reduce(to_unique_events, prev_events)
+    .map(event_date_to_date_obj)
+    .sort(by_date);
+
   if (options.output === null) {
     console.log(JSON.stringify(events));
     process.exit();