finding-duplicate-functions

SKILL.md

Finding Duplicate-Intent Functions

Overview

LLM-generated codebases accumulate semantic duplicates: functions that serve the same purpose but were implemented independently. Classical copy-paste detectors (jscpd) find syntactic duplicates but miss "same intent, different implementation."

This skill uses a two-phase approach: classical extraction followed by LLM-powered intent clustering.

When to Use

Codebase has grown organically with multiple contributors (human or LLM)

You suspect utility functions have been reimplemented multiple times

Before major refactoring to identify consolidation opportunities

After jscpd has been run and syntactic duplicates are already handled

Quick Reference