obsidian-code

Desktop app that analyzes JavaScript/TypeScript codebases and visualizes function call graphs interactively.

Point it at any JS/TS project and instantly see how functions connect — which functions call which, across files, with full import resolution.

Built with LuaJIT + LOVE2D. No Electron, no browser, no JavaScript runtime needed.

Download

Platform	Download	Size
Windows (64-bit)	obsidian-code-win64.zip	~5 MB
Linux (x86_64)	obsidian-code-x86_64.AppImage	~6 MB

How to Use

Windows

1. Download and extract obsidian-code-win64.zip
2. Double-click obsidian-code.exe
3. Enter a project path in the toolbar and click Analyze

First run: Windows SmartScreen may warn about an unknown publisher. Click More info then Run anyway.

Linux

chmod +x obsidian-code-x86_64.AppImage
./obsidian-code-x86_64.AppImage

Enter a project path in the toolbar and click Analyze.

CLI Mode (Linux only, requires LuaJIT)

luajit main.lua --cli /path/to/your/project

Outputs the call graph as JSON to stdout.

Features

• Network Graph — Force-directed layout showing all functions as nodes and calls as edges. Pan, zoom, drag, hover for details.
• Flow View — Select a function to see what it calls (callees) and what calls it (callers) in a linear list.
• Sidebar — Browse files and functions. Click a file to filter the graph. Click a function to select it.
• Import Resolution — Follows require, import, and export across files to accurately map cross-file calls.
• External Filtering — Third-party packages (react, lodash, etc.) are automatically excluded from the graph.

Supported Languages

• JavaScript (.js, .jsx)
• TypeScript (.ts, .tsx)

How It Works

1. Scan — Walks the project directory, respects .gitignore, finds all JS/TS files
2. Parse — Uses tree-sitter to build ASTs for each file
3. Extract — Pulls out function declarations, arrow functions, methods, and all call expressions
4. Resolve — Maps imports/exports across files, links call sites to function definitions
5. Graph — Builds a node+edge graph and renders it with a force-directed layout

Tech Stack

Layer	Tech
Runtime	LuaJIT
GUI	LOVE2D
AST parsing	tree-sitter (via ltreesitter)
File system	luafilesystem
JSON	lua-cjson

Building from Source

Requirements

• LOVE2D 11.5+
• LuaJIT
• ltreesitter, luafilesystem, lua-cjson (install via luarocks)

Run

love .

License

MIT