DiffLens is a lightweight, TypeScript-based tool designed to enhance the review process of Git diffs by leveraging LangGraph. This innovative application incorporates additional verification steps to effectively isolate and filter out-of-bounds line hallucinations, ensuring accuracy in code reviews.

Key Features

• Automated Code Review: Streamlines the process of reviewing Git diffs, improving efficiency and reducing human error.
• Structured Pipeline: Moves beyond simple review scripts to a structured approach, minimizing issues related to broken coordinate references before the final output is presented.
• Verified Engine: The core engine is fully functional and continuously validated through an automated CI pipeline, guaranteeing reliability and consistency in results.

Architecture Overview

The architecture of DiffLens is designed to efficiently handle the review workflow:

graph TD
    A[Git Diff Input] --> B[Parser Node: Extract Line Range]
    B --> C[LLM Generation Node: Review Comments]
    C --> D[Verifier Node: Coordinate Check]
    D -- Line Out of Bounds --> E[Conditional Router: Error Feedback]
    E --> C
    D -- Valid Coordinates --> F[Final Approved Report]

With DiffLens, the code review process becomes more reliable by addressing line-number hallucinations and ensuring that feedback is both accurate and actionable.