☾ LUNA - Library Usage in Node.js Analyzer

Description

LUNA is a software development tool for node.js (and other javascript) projects, with a focus on libraries. The goal of LUNA is to aid developers in better understanding how libraries are being utilized in their projects.

Requirements

• Node.js
• Your node.js project

Usage

Inside any node.js project, run:

npx luna-scanner

After analyzing the source code, it will generate a LUNA report, which includes a visualization about the interaction between source code and libraries.

• Drag (click and hold) the mouse to pan around or move nodes around
• Use the mouse wheel to zoom in or out
• Hovering over a node will display information on the bottom left and highlight connected nodes
• Using Shift + Click on a node will lock it, so that focus remains on this node (Shift + Click node again to unlock)
• Double Click nodes or groups in the graph or menu to collapse/expand them
• Use the menu on the left to manipulate the graph:
  1. Adjust the scale of the graph / space between nodes
  2. Adjust the layout of the graph / position of the nodes
  3. Hide a selection of nodes (representing libraries or files)
  4. Highlight a selection of nodes (representing libraries or files)
• Hover your mouse above menu items to find more information about their functionality

Configuration

Via package.json (defaults):

{
   ...
   "luna": {
      "debug": false,            // toggle debug mode
      "components": {            // toggle components of LUNA
         "callGraph": true,      // detection of function calls within files
         "dependencyTree": true, // detection of dependency chains
         "libraryAPI": true,     // detection of used API of libraries
      },
      "ignore": [],              // array of glob patterns for LUNA's scanner to ignore
   },
   ...
}

Via command line arguments (limited):

npx luna-scanner [path_to_project] [debug]

Known Issues

• The library used to handle collapsing and expanding of nodes may break in some situations. Best to avoid excessive collapsing/expanding.

Feedback

Much appreciated! I encourage you to use my feedback form.