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duplicate-finder

Detect duplicated logic across TypeScript and JavaScript codebases.

11|Updated Apr 16, 2026
Search Tags:#refactor#abstraction#grep#code#static-analysis#duplicate
One-click install
npx skills add https://github.com/berkcangumusisik/claude-code-practices --skill duplicate-finder
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: duplicate-finder
Source: https://github.com/berkcangumusisik/claude-code-practices/tree/main/skills/duplicate-finder
Command: npx skills add https://github.com/berkcangumusisik/claude-code-practices --skill duplicate-finder

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Duplicated logic across a codebase leads to maintenance pain, inconsistent fixes, and higher risk of bugs. This Skill identifies recurring patterns and proposes centralized abstractions to improve consistency and reduce technical debt.

Core Features & Use Cases

  • Duplicate detection: scans files to surface similar code blocks and overlapping responsibilities across modules.
  • Abstraction proposals: suggests shared utilities, hooks, or base classes to consolidate logic.
  • Guided consolidation: provides a plan outlining affected call sites and migration steps to minimize churn.

Quick Start

Provide a codebase path and let the tool analyze for duplicates and recommended abstractions.

Frequently Asked Questions about duplicate-finder

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I find duplicate code in a TypeScript project?▼

To find duplicate code in a TypeScript project, this Skill scans your multi-file codebase path to surface similar code blocks and overlapping responsibilities across modules, reducing maintenance pain and inconsistent fixes.

What is the best way to refactor duplicated logic into shared abstractions?▼

Refactoring duplicated logic into shared abstractions is handled by validating structural pattern matches and proposing centralized utilities, hooks, or base classes to consolidate logic and reduce technical debt.

How does static analysis identify cross-file code duplication?▼

Static analysis identifies cross-file code duplication by validating structural and pattern matching across a codebase, surfacing recurring patterns to guide the extraction of shared utilities and reduce technical debt.

Can I use this duplicate detection tool on single-file JavaScript applications?▼

Using this duplicate detection tool on single-file JavaScript applications is not the intended use case; it is applied specifically to multi-file TypeScript and JavaScript projects to surface cross-file duplication.

How do I plan code consolidation for duplicated call sites?▼

To plan code consolidation for duplicated call sites, this Skill provides a guided migration plan outlining affected call sites and extraction steps to centralize abstractions and minimize churn.

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