how to fix "e.diffs.map is not a function" bug #19262

Activity

1. natewill

   added

   bugSomething isn't workingSomething isn't working

   on Mar 26, 2026
2. github-actions

   assigned

   rekram1-node

   on Mar 26, 2026
3. github-actions

   added

   coreAnything pertaining to core functionality of the application (opencode server stuff)Anything pertaining to core functionality of the application (opencode server stuff)

   needs:complianceThis means the issue will auto-close after 2 hours.This means the issue will auto-close after 2 hours.

   on Mar 26, 2026
4. github-actions commented on Mar 26, 2026

   

   github-actionsbot

   on Mar 26, 2026 – with GitHub Actions

   Contributor

   More actions

   This issue doesn't fully meet our contributing guidelines.

   What needs to be fixed:

   • Most required fields are empty (_No response_): OpenCode version, Steps to Reproduce, Operating System, and Terminal are all missing
   • The description provides a workaround rather than describing the bug itself — please describe what the bug is and how to reproduce it
   • The title starts with "FIX" but this should be filed as a Bug Report describing the problem

   Please edit this issue to address the above within 2 hours, or it will be automatically closed.

   ---

   This issue might be a duplicate of existing issues. Please check:

   • TypeError: e.diffs.map is not a function when reopening old browser session #19217: Same TypeError: e.diffs.map is not a function error when reopening old browser sessions — this issue already has active discussion and an assignee

   If you believe this was flagged incorrectly, please let a maintainer know.
5. natewill

   changed the title [-]FIX e.diffs.map is not a function[/-] [+]how to fix "e.diffs.map is not a function" bug[/+] on Mar 26, 2026
6. github-actions commented on Mar 26, 2026

   

   github-actionsbot

   on Mar 26, 2026 – with GitHub Actions

   Contributor

   More actions

   Thanks for updating the issue! The description now has useful content explaining the root cause and a workaround.

   However, a few required fields are still missing:

   • OpenCode version — which version were you on when you hit this bug?
   • Steps to reproduce — what did you do to trigger the e.diffs.map is not a function error? (e.g. opened an old session, did X, saw Y)
   • Operating System and Terminal — helpful context for the team to reproduce and verify the fix

   Please fill these in so the issue can be properly triaged. The description workaround is great, but maintainers need reproduction context to confirm the fix lands correctly.
7. github-actions commented on Mar 26, 2026

   

   github-actionsbot

   on Mar 26, 2026 – with GitHub Actions

   Contributor

   More actions

   This issue has been automatically closed because it was not updated to meet our contributing guidelines within the 2-hour window.

   Feel free to open a new issue that follows our issue templates.
8. github-actions

   removed

   needs:complianceThis means the issue will auto-close after 2 hours.This means the issue will auto-close after 2 hours.

   on Mar 26, 2026
9. github-actions

   closed this as not plannedon Mar 26, 2026
10. Dredok

    added a commit that references this issue on Mar 26, 2026

    fix(app): add defensive Array.isArray checks for session diffs

    ...

    efb87f9