`state.undo / redo` does not seem to work

[pedroAquino]

Thanks for the awesome library,

I'm trying to make the undo / redo from valtio's proxyWithHistory work but it seems that it is not triggering yjs to update on undo / redo.

Code sandbox example here:

https://codesandbox.io/s/valtio-history-counter-d6txif?file=/src/App.js:329-345

any ideas on how to solve this ?

[dai-shi]

Hey, thanks for trying the library.
Confirmed the behavior, but I don't know how it's happening.
We would need a test to investigate further and keep the feature for the future.
Can you try to reproduce the issue minimally without proxyWithHistory? (You may need to read the code.)

[pedroAquino]

Hey @dai-shi thanks for the quick response

Can you try to reproduce the issue minimally without proxyWithHistory? (You may need to read the code.)

what did you mean by that ? I can't call undo / redo without proxyWithHistory correct ?

[dai-shi]

Yeah, I mean to ask help for debugging.
proxyWithHistory is just a util around proxy. So, the bug can be revealed by reproducing it only with proxy at minimum.
If you are not familiar with the implementation, just ignore...

[pedroAquino]

I'm somehow familiar with the implementation of valtio-yjs but not valtio itself, will do some debugging later this week 👍

[vezwork]

I'm interested in using valtio-yjs with either proxyWithHistory or y.js' undoManager. Has there been progress on this bug? I tried adding UndoManager usage to this valtio-yjs demo but calling undo did not change the data at all.

[dai-shi]

At the moment, I'd say valtio-yjs and proxyWithHistory conflict. (Help wanted)
I would avoid using proxyWithHistory (which is just a tiny util) for the moment, and try handmade undo feature.

[PhilGarb]

@vezwork when I had issues with the yjs undoManager it helped to assign a transaction origin to the undo manager and valtio-yjs.

const undoManager = new Y.UndoManager(yMap, {
  trackedOrigins: new Set(["valtio"]),
});

bind(syncedStore, yMap, {
  transactionOrigin: "valtio",
});

I am not quite sure why this is necessary, but after adding it it worked for me.

[vezwork]

Thanks @PhilGarb, I just tried that but undo still does not seem to do anything. Here is what I was trying: https://codesandbox.io/s/valtio-yjs-demo-forked-2hzskt?file=/src/App.js

edit: Never mind! It works! I upgraded the example's version of valtio-yjs to 0.5.0 from 0.1.0, and used bind instead of bindProxyAndYmap and it now works :). Thanks for the help!