duplicate-code-detection

Detect duplicate JavaScript/TypeScript code blocks across files and modules.

1|Updated Apr 6, 2026
One-click install
npx skills add https://github.com/kirti/react-ai-skills --skill duplicate-code-detection
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: duplicate-code-detection
Source: https://github.com/kirti/react-ai-skills/tree/main/skills/duplicate-code-detection
Command: npx skills add https://github.com/kirti/react-ai-skills --skill duplicate-code-detection

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Automatically detect and refactor duplicate code blocks in JavaScript/TypeScript projects, helping teams reduce maintenance costs and improve consistency.

Core Features & Use Cases

  • Detection & Reporting: Identify exact, structural, and logical duplicate code across files using static analysis and heuristic checks.
  • Automated Refactoring: Suggest or apply function extraction to consolidate duplicates into reusable utilities.
  • CI/CD & Pre-commit Ready: Integrates with Git hooks and workflows to prevent regression due to duplication.

Quick Start

Use the detection workflow to scan your repository and review the resulting duplication report.

Frequently Asked Questions about duplicate-code-detection

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

FAQPage Schema
How do I detect duplicate code in JavaScript and TypeScript projects?

To detect duplicate code in JavaScript and TypeScript projects, you can scan your repository to identify exact, structural, and logical duplication across files and modules using static analysis with configurable thresholds.

Can I automate duplicate code refactoring by extracting reusable functions?

Yes, you can automate duplicate code refactoring by applying function extraction to consolidate repeated blocks into reusable utilities, which reduces maintenance costs and improves codebase consistency.

Does this duplicate code detection tool work with CI/CD and pre-commit workflows?

This duplicate code detection tool works with CI/CD and pre-commit workflows by integrating with Git hooks to output detailed reports with locations and prevent regression due to duplication.

What is the best way to find structural and logical code duplication across files?

The best way to find structural and logical code duplication across files is using a pluggable detection pipeline with heuristic checks that identifies duplicated blocks regardless of variable names or minor syntax differences.

Can I configure ignore lists and thresholds for code duplication detection?

Yes, you can configure ignore lists and detection thresholds within the pipeline to customize the sensitivity of the code duplication scan and exclude specific files or patterns from the report.

Is this structural duplication detection suitable for large scale codebases?

This structural duplication detection is suitable for codebases of any size, applying static analysis across files and modules to effectively identify repeated code blocks in large JavaScript and TypeScript projects.