SCARF Meta’s best tool?

Meta’s software development team utilizes a tool called SCARF to automatically eliminate unused code.

Here’s how SCARF accomplishes this task:

1. Identifying Dead Code: SCARF employs a combination of static and dynamic analysis to locate and flag dead code, which refers to code segments that are no longer utilized by the software.

2. Automated Cleanup: SCARF automatically generates requests to remove the identified dead code, enhancing software quality and reducing code clutter.

3. Multi-Language Support: SCARF effectively handles various programming languages employed within Meta’s software ecosystem.

4. Fine-Grained Cleanup: SCARF operates at a granular level, targeting specific code elements rather than entire files.

5. Garbage Collection: SCARF eliminates entire interconnected code groups, including circular dependencies, streamlining the cleanup process.

6. Automation with CodemodService: SCARF collaborates with
CodemodService, enabling large-scale automated code modifications. Engineers review the generated requests for verification.

7. Ongoing Improvement: SCARF undergoes continuous enhancements, and mechanisms are in place to rectify any erroneous code removals.

8. Workflow Management: SCARF offers workflow support, allowing engineers to manually remove code when appropriate, working collaboratively with the tool.

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