add getFileMetadata method in FileService to get only metadata #243
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…ut reading the whole file + tests
🦋 Changeset detectedLatest commit: c89eb09 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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commit: |
🐳 Docker Image PublishedFROM cloudflare/sandbox:0.0.0-pr-243-3caea86Version: You can use this Docker image with the preview package from this PR. |
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Claude Code Review
All previous issues resolved. Nice work addressing the feedback!
What was fixed:
- ✅ Added comprehensive test for
readFileStreamOperation()with explicit verification that only 3 metadata commands run (no full file read) - ✅ Expanded doc comment explaining why
getFileMetadata()exists - ✅ Added NaN validation in both
getFileMetadata()and the existingread()method - ✅ Extracted
isBinaryMimeType()helper to eliminate duplication
Code quality: Excellent. Clean abstraction, comprehensive tests, follows established patterns.
Handler simplification: The file-handler.ts change removed 31 lines by properly delegating to the service layer - good example of proper abstraction.
Minor suggestions for future consideration:
- Could cache MIME type detection results if profiling shows repeated operations on same files as a bottleneck (unlikely)
- Doc comment could mention session isolation behavior, though current version is clear
Neither suggestion blocks merging. Looks good.
Add a method to retrieve only file metadata.
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Claude Code Review
All previous issues have been properly addressed. The implementation looks excellent:
- NaN validation added with proper error handling
- Binary detection extracted to helper method (no duplication)
- Doc comment clearly explains optimization purpose
- Comprehensive test coverage verifies the key optimization (no full file reads)
The tests are particularly well-done - they explicitly verify command sequences to prove getFileMetadata() doesn't read file content, and that readFileStreamOperation() correctly uses the new method instead of read().
Approved - ready to merge.
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