message: csv export datetime support
diff: @@ -68,6 +68,13 @@ const selectedColumnsReducer = (doc: any) => (
  : "NO"
  : "",
  };
  + case FieldType.dateTime:
  + return {
  + ...accumulator,
  + [currentColumn.key]: doc[currentColumn.key]
  + ? doc[currentColumn.key].toDate()
  + : "",
  + };
  case FieldType.last:
  return accumulator;
  default:
  @@ -120,7 +127,7 @@ export const exportTable = functions.https.onCall(
  if (limit) query = query.limit(limit);
  const querySnapshot = await query.get();
  const docs = querySnapshot.docs.map(doc => doc.data());
  -
  + // generate csv Data
  const data = docs.map((doc: any) => {
  return columns.reduce(selectedColumnsReducer(doc), {});
  });
  