perf(transform): skip parsing files without await

[TheAlexLichter]

Thightens shouldTransform given that await is needed as keyword.

Summary by CodeRabbit

• Bug Fixes
  • Tightened transformation eligibility so code is only processed when it includes both a supported target function call and a real await keyword.
  • Avoids triggering on lookalike or unrelated patterns that merely contain “await” text.
• Tests
  • Expanded shouldTransform test coverage with additional negative and edge-case inputs (e.g., target call without await, await without the target call, and non-keyword “await” usage).

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: d9e10adc-f9d9-476a-b130-2baf3b29c249

📥 Commits

Reviewing files that changed from the base of the PR and between fe2bf77 and 901160d.

📒 Files selected for processing (2)

• src/transform.ts
• test/transform.test.ts

🚧 Files skipped from review as they are similar to previous changes (2)

• test/transform.test.ts
• src/transform.ts

---

📝 Walkthrough

Walkthrough

Adds an AWAIT_RE regex to src/transform.ts and updates shouldTransform to return true only when both the configured function-call pattern and the await keyword are present in the source. New tests verify all four conditions.

shouldTransform await guard

Layer / File(s)	Summary
AWAIT_RE regex and shouldTransform guard src/transform.ts, test/transform.test.ts	AWAIT_RE detects the await keyword; shouldTransform now ANDs it with the existing matchRE check. Tests assert true only when both are present and false for missing function, missing await, or non-keyword await.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐇 A hop through the code, a quick little check,
No await? No transform — keep logic in spec!
The regex stands guard like a sentinel keen,
Only matched calls with await shall convene.
Carrots for correctness, the rabbit agrees! 🥕

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: skipping transform work when no await keyword is present.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/transform.ts`:
- Line 38: The `AWAIT_RE` fast path in `shouldTransform()` is too broad because
it matches member accesses like `obj.await()` and `$await()` even when no
`AwaitExpression` exists. Tighten the regex or guard logic in `shouldTransform`
to only detect real async/await syntax, and add test coverage for member-access
and `$`-prefixed identifiers to ensure those cases do not trigger parsing.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0c0818a1-3201-42e7-a1bf-9761959b36f3

📥 Commits

Reviewing files that changed from the base of the PR and between 7005e81 and fe2bf77.

📒 Files selected for processing (2)

• src/transform.ts
• test/transform.test.ts

[pi0]

I think we can reorder await check before matchRe as it is more predictable/restrictive.

[TheAlexLichter]

I don't think that'll be more efficient.

At the moment, we check less files for both the functions + await
If we put the await regex first we have more files in the first selection (more files have await than one of the functions checked matchRE), and then reject a lot of files after.

[TheAlexLichter]

CI is failing due to setup issues that I resolved via #134 already