Property indicating the time at which, if any, the subscription won't be valid anymore. The user agent will attempt to fire a `pushsubscriptionchange` event with a new subscription before this happens. Chrome will always return NULL, until we support subscription refreshes.
Status in Chromium
Enabled by default (tracking bug) in:
- Chrome for desktop release 60
- Chrome for Android release 60
Consensus & Standardization
Search tagspush, api, notifications,
Last updated on 2020-11-09