refactor: Some minor refinements

scrape/parse/v3.ts

@@ -136,7 +136,7 @@ export default async function parseV3(workbook: Workbook, downloadedFilePath: st
 
   for (const { dateKey, sheet } of resolvedDays) {
     const ann = announcements[dateKey];
-    const allFlags = ann.map(a => a.flags).flat();
+    const allFlags = ann?.map(a => a.flags)?.flat() || [];
 
     const { changes, absence, inWork, takesPlace, reservedRooms } = extractDaySchedule(sheet, teacherMap, themeColors, allFlags);
 
@@ -155,7 +155,7 @@ export default async function parseV3(workbook: Workbook, downloadedFilePath: st
     schedule,
   };
 
-  fs.writeFileSync("volume/db/v3.json", JSON.stringify(data, null, 2));
+  return data;
 }
 
 //
@@ -238,7 +238,6 @@ function isPripravaSheet(name: string) {
 //
 
 function extractClassChanges(sheet: Worksheet, themeColors: ThemeColors | null, flags: Flag[]) {
-  console.log(flags)
   const ignoreColors = flags.includes(Flag.SHOW_ALL_ENTRIES)
   const classRegex = /[AEC][0-4][a-c]?\s*\/.*/s;
   const prefixRegex = /[AEC][0-4][a-c]?/;