Handle workflow events without commits

[liurenfeng94-ops]

Summary

Fixes #218 by replacing the current eventObj.pull_request._links.commits.href assumption with an explicit event commit resolver.

When the action runs on events that do not include commits and are not pull request events, it now fails with an actionable message that points users toward push/pull_request events or static-checking + file-url.

Validation

• npm ci
• npm run lint
• npm run build
• Smoke: workflow-dispatch-shaped event now reports the friendly error instead of throwing _links
• Smoke: push-shaped event with commits: [] still exits successfully with changed=false

This PR was prepared with AI coding-agent assistance; I reviewed the change and ran the validation above locally.

Summary by CodeRabbit

• Bug Fixes
  • Improved commit detection for workflow events.
  • Added clearer error messages when commit information is unavailable.
  • Prevented directory processing from starting until required commit data is resolved.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: db501f3c-9c11-4f88-b363-e0039324ff30

📥 Commits

Reviewing files that changed from the base of the PR and between 0c56c8a and 960e6fd.

📒 Files selected for processing (2)

• lib/index.js
• src/main.ts

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📝 Walkthrough

Walkthrough

The non-static-checking workflow now resolves commits from event data or a pull request commits link, reports a descriptive error when commits are unavailable, and processes the directory only after successful resolution.

Changes

Workflow commit resolution

Layer / File(s)	Summary
Resolve and validate workflow commits src/main.ts	getEventCommits reads commits from event data or the pull request commits link. The workflow reports supported event options when commits cannot be resolved and then calls processDirectory with the resolved list.

Estimated code review effort: 2 (Simple) | ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly reflects the main change: handling workflow events that lack commit data.
Linked Issues check	✅ Passed	The change addresses #218 by avoiding unsafe _links access and handling missing commit information with a clearer fallback.
Out of Scope Changes check	✅ Passed	The changes stay focused on commit resolution and error handling in src/main.ts, with no obvious unrelated additions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

Warning

There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure.

🔧 ast-grep (0.45.0)

lib/index.js

ast-grep timed out on this file

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