GitHub PR Analyzer

A tool to analyze GitHub pull requests, fetch changed files, and run repomix analysis on the code.

Features

• Automatically fetches PR diffs and details
• Downloads all changed files from the PR
• Runs Repomix analysis to obtain changed files in a format compatible with LLMs
• Generates LLM prompts for code review
• Supports different output formats (XML, Markdown, Plain Text)
• Includes file list and copy functionality

Installation

1. Clone this repository
2. Install dependencies:

npm install

3. Create a .env file from the example:

cp .env.example .env

4. Add your GitHub token to the .env file:

GITHUB_TOKEN=your_github_personal_access_token

Usage

1. Start the server:

npm start

2. Open your browser and navigate to http://localhost:3000

3. Enter a GitHub PR URL and click "Analyze PR"

4. The app will:

   • Fetch the PR details and diff
   • Download all changed files
   • Run repomix analysis
   • Display the results

5. You can:

   • Change the repomix output format
   • Generate an LLM prompt for code review
   • Copy the diff, PR details, or repomix output

How It Works

Backend

• Uses GitHub API to fetch PR diffs and file content
• Creates a unique directory for each PR's files
• Runs repomix analysis on the downloaded files
• Preserves file structure and paths

Frontend

• Simple UI for entering PR URLs
• Checkboxes for customizing the LLM prompt
• Format selection for repomix output
• File list showing all changed files

Required GitHub Token Scopes

For the GitHub token, you need at least:

• repo scope for accessing private repositories
• read:user scope for accessing PR author details

License

MIT