JupyterLab State Persistence

v6
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Hello, I am currently building an extension for JupyterLab that involves saving and reusing code snippets. One of the features of my extension involves code snippets getting highlighted when they are pasted into a notebook. I currently have that functionality working via extending CodeMirror.

Screenshot 2025-04-02 at 4.13.33 AM
Screenshot 2025-04-02 at 4.13.33 AM2328×566 41.4 KB

One problem I am currently stuck on as of right now is making the highlighted cells persist on reload. Any guidance or potential tips?

2

CodeMirror itself does not concern itself with cross-reload state at all. But you might look to see if JupyterLab provides any interfaces for this. Or failing that, just put your state in localStorage.