I Built RepoMap: An Open-Source Tool That Turns GitHub Repositories into Interactive Knowledge Graphs

Arman hansda — Wed, 29 Jul 2026 17:07:55 +0000

Every developer has faced this problem.

You find an interesting open-source project, clone it, open it in your editor, and then...

You're staring at hundreds (or thousands) of files wondering:

Where does the application start?
Which files are actually important?
How are components connected?
Where is authentication implemented?
What happens when a button is clicked?

Understanding an unfamiliar codebase often takes hours—or even days.

I wanted a better way.

The Idea

Instead of reading source code file by file, what if you could see the architecture?

That's why I built RepoMap.

RepoMap analyzes a GitHub repository and converts it into an interactive knowledge graph, allowing developers to explore relationships visually instead of manually tracing imports.

Demo

🌐 Live Demo: https://repomap.armanx.online

⭐ GitHub: https://github.com/armannhansda/repomap

How It Works

The analysis pipeline is fairly straightforward.

GitHub Repository
│
▼
Repository Scanner
│
▼
AST Parser (ts-morph)
│
▼
Import Resolver
│
▼
Relationship Extraction
│
▼
Knowledge Graph Builder
│
▼
Interactive Visualization

Rather than treating files as isolated pieces of code, RepoMap builds a graph where every file becomes a node and every dependency becomes a relationship.

For example:

App.tsx
│
imports
▼
Navbar.tsx
│
renders
▼
Avatar.tsx

This makes navigating large repositories significantly easier.

Current Features

✅ Repository visualization

✅ Interactive dependency graph

✅ Repository explorer

✅ File search

✅ Import resolution

✅ Interactive graph navigation

Technical Challenges

One of the biggest challenges wasn't parsing code—it was accurately resolving imports.

Consider imports like:

import Button from "@/components/Button";

import Navbar from "../Navbar";

Resolving these correctly requires handling:

Relative paths
Path aliases
index.ts files
Missing file extensions
Circular dependencies

Without proper resolution, the graph quickly becomes inaccurate.

Using ts-morph made it possible to analyze the TypeScript AST instead of relying on fragile regular expressions.

Why a Knowledge Graph?

Most dependency visualizers simply draw lines between files.

I wanted something more flexible.

Representing repositories as a knowledge graph opens the door to richer relationships, such as:

Imports
Function calls
Component hierarchies
API interactions
Database usage
Route relationships This foundation also enables future capabilities like impact analysis, architecture exploration, and AI-powered repository understanding.

What's Next?

RepoMap is still evolving.

Some of the features I'm currently working on include:

Function call graphs
Component relationship graphs
Route visualization
Multi-language support with Tree-sitter
AI-powered repository exploration
Better scalability for very large repositories
RepoMap is Open Source

I've decided to make the entire project open source because I believe developer tools improve through community collaboration.

Whether you'd like to:

Fix bugs
Improve the UI
Add support for new languages
Optimize performance
Improve documentation
Suggest new features

I'd love to have your contributions.

GitHub Repository:

https://github.com/armannhansda/repomap

I'd Love Your Feedback

If you try RepoMap, I'd really appreciate your thoughts.

What would make it more useful?
Which repository should I test next?
What features would you like to see?

If you find the project interesting, consider giving it a ⭐ on GitHub.

Thanks for reading, and happy coding!

DEV Community: Arman hansda

I Built RepoMap: An Open-Source Tool That Turns GitHub Repositories into Interactive Knowledge Graphs