bun dev github run fails with unclear error when no event context is provided

[Molaryy]

Description

Running bun dev github run without a GitHub Actions event context currently fails with:

Unsupported event type: undefined

This error is misleading. The real issue is that no GitHub event context is available, not that an unsupported event was provided. As a result, users are not guided toward the correct next step, such as running the command inside a GitHub Actions workflow or providing a mock event locally.

Plugins

No response

OpenCode version

No response

Steps to reproduce

bun dev githun run

Screenshot and/or share link

No response

Operating System

macOS 15.6

Terminal

Ghostty

[github-actions]

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

• OpenCode github action: Add support for pull_request_review and pull_request_review_comment as triggering events #2152: Similar unsupported event type error (though in a different context with pull_request_review)
• /opencode raise an error in github actions #2549: Related GitHub Actions integration issues (now closed)

The core issue here is the misleading error message when no GitHub event context is available. The message "Unsupported event type: undefined" should be more descriptive, such as "No GitHub event context is available. This command must be run inside a GitHub Actions workflow or with a mock event provided."