Fix timeline markers not working on Chrome (#13887)

* Periodically save timeline markers

This saves timeline markers immediately upon message arrival, but not more
than once every 5 minutes.

This does not change how the markers are saved on closing the window,
except that it avoids submitting them if there is no need for it.

* Use the Fetch API when possible instead of XHR on window unload

1 files changed, 4 insertions, 0 deletions

diff --git a/app/javascript/mastodon/actions/notifications.js b/app/javascript/mastodon/actions/notifications.js
index 8a066b896..a26844f84 100644
--- a/app/javascript/mastodon/actions/notifications.js
+++ b/app/javascript/mastodon/actions/notifications.js
@@ -7,6 +7,7 @@ import {
   importFetchedStatus,
   importFetchedStatuses,
 } from './importer';
+import { submitMarkers } from './markers';
 import { saveSettings } from './settings';
 import { defineMessages } from 'react-intl';
 import { List as ImmutableList } from 'immutable';
@@ -70,6 +71,8 @@ export function updateNotifications(notification, intlMessages, intlLocale) {
       filtered = regex && regex.test(searchIndex);
     }
 
+    dispatch(submitMarkers());
+
     if (showInColumn) {
       dispatch(importFetchedAccount(notification.account));
 
@@ -157,6 +160,7 @@ export function expandNotifications({ maxId } = {}, done = noOp) {
 
       dispatch(expandNotificationsSuccess(response.data, next ? next.uri : null, isLoadingMore, isLoadingRecent, isLoadingRecent && preferPendingItems));
       fetchRelatedRelationships(dispatch, response.data);
+      dispatch(submitMarkers());
     }).catch(error => {
       dispatch(expandNotificationsFail(error, isLoadingMore));
     }).finally(() => {