GM_setValue data not synced between tabs about violentmonkey HOT 3 CLOSED

This is a known issue, but is it really necessary?

from violentmonkey.

Yes, otherwise you get data loss.
To give an example from a script I'm maintaining, 4chan X adds a button to hide posts on 4chan, storing the list of hidden posts with GM_setValue. Say you have https://boards.4chan.org/c/thread/2570357 open in one tab and http://boards.4chan.org/c/thread/2539836 in another. (I'm deliberately using http and https in this example because if they're on the same origin, 4chan X will attempt to sync data using localStorage.) If you hide a few posts in the first thread, then hide some more posts in the second thread, then reload the first thread, the posts you hid in the first thread reappear!

from violentmonkey.

I thought GM_getValue and GM_setValue are mostly used to share data among tabs with different domains in which case data sync might not be so necessary. I prefer using localStorage to share data that needs synced since localStorage is built-in and synchronous.

Anyway, data sync sounds reasonable. This feature will be added soon.

from violentmonkey.