Code Check Complexity - VS Code Extension

Real-time code complexity analysis with Cyclomatic and Halstead metrics, refactoring suggestions, and visual feedback right inside Visual Studio Code.

A VS Code extension that analyzes code complexity and provides visual feedback through status bar indicators, gutter decorations, and file explorer badges.

Features

• Real-time Complexity Analysis: Automatically analyzes your code as you work
• Visual Feedback:
  • Status bar percentage indicator
  • Color-coded gutter decorations (green/blue/red)
  • File explorer badges (L/M/H)
• Multiple Language Support: Works with JavaScript, TypeScript, Python, Java, and more
• Customizable Thresholds: Configure your own complexity thresholds

Installation

1. Open VS Code
2. Go to the Extensions view (Ctrl+Shift+X)
3. Search for "Code Check Complexity"
4. Click Install

Alternatively, you can install from the VS Code Marketplace.

Usage

The extension works automatically when you:

• Open a file
• Save a file
• Switch between files

Manual Analysis

You can manually trigger analysis:

1. Open the Command Palette (Ctrl+Shift+P)
2. Type "Analyze Code Complexity"
3. Press Enter

Understanding the Indicators

Indicator	Complexity Level	Color	Description
L	Low (<40%)	Green	Simple, easy to understand code
M	Medium (40-70%)	Blue	Moderately complex code
H	High (>70%)	Red	Complex code that may need refactoring

Configuration

You can customize the extension behavior by adding these settings to your VS Code settings.json:

{
  "codeCheckComplexity.keywords": [
    "if", "for", "while", "function", 
    "switch", "case", "catch", "try",
    "else if", "else"
  ],
  "codeCheckComplexity.lowThreshold": 40,
  "codeCheckComplexity.mediumThreshold": 70
}