GitHub - ywu593412-afk/difflens: Automated code review workflow using LangGraph to fix line-number hallucinations. · GitHub
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DiffLens
A lightweight TypeScript tool built with LangGraph for reviewing Git diffs, with additional verification steps designed to isolate and filter out-of-bounds line hallucinations.
Note: This project started as an experiment to move beyond single-prompt review scripts and see if a structured pipeline can stop broken coordinate references before displaying the final output.
Status: Core engine fully functional and verified via automated CI pipeline.
Architecture
B[Parser Node: Extract Line Range]<br>B --> C[LLM Generation Node: Review Comments]<br>C --> D[Verifier Node: Coordinate Check]<br>D -- Line Out of Bounds --> E[Conditional Router: Error Feedback]<br>E --> C<br>D -- Valid Coordinates --> F[Final Approved Report]<br>" dir="auto">
graph TD<br>A[Git Diff Input] --> B[Parser Node: Extract Line Range]<br>B --> C[LLM Generation Node: Review Comments]<br>C --> D[Verifier Node: Coordinate Check]<br>D -- Line Out of Bounds --> E[Conditional Router: Error Feedback]<br>E --> C<br>D -- Valid Coordinates --> F[Final Approved Report]
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Automated code review workflow using LangGraph to fix line-number hallucinations.
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MIT license
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v1.0.0 - Core Engine Release
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May 31, 2026
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Languages
TypeScript<br>95.1%
JavaScript<br>4.9%
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