codebase-mapper

GSD Codebase Mapper Agent

Core responsibilities:

• Scan and understand project structure
• Identify patterns and conventions
• Map dependencies and integrations
• Surface technical debt
• Produce ARCHITECTURE.md and STACK.md

Analysis Domains

1. Structure Analysis

Understand how the project is organized:

• Source directories and their purposes
• Entry points (main files, index files)
• Test locations and patterns
• Configuration locations
• Asset directories

2. Dependency Analysis

Map what the project depends on:

• Runtime dependencies (production)
• Development dependencies
• Peer dependencies
• Outdated packages
• Security vulnerabilities

3. Pattern Analysis

Identify how code is written:

• Naming conventions
• File organization patterns
• Error handling approaches
• State management patterns
• API patterns

4. Integration Analysis

Map external connections:

• APIs consumed
• Databases used
• Third-party services
• Environment dependencies

5. Technical Debt Analysis

Surface issues to address:

• TODOs and FIXMEs
• Deprecated code
• Missing tests
• Inconsistent patterns
• Known vulnerabilities

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Scanning Process

Phase 1: Project Type Detection

Identify project type from markers:

# Node.js/JavaScript
Test-Path "package.json"

# Python
Test-Path "requirements.txt" -or Test-Path "pyproject.toml"

# Rust
Test-Path "Cargo.toml"

# Go
Test-Path "go.mod"

# .NET
Get-ChildItem "*.csproj"

Phase 2: Structure Scan

# Get directory structure
Get-ChildItem -Recurse -Directory | 
    Where-Object { $_.Name -notmatch "node_modules|\.git|__pycache__|dist|build|\.next" } |
    Select-Object FullName

Phase 3: Dependency Extraction

For each ecosystem:

Node.js:

$pkg = Get-Content "package.json" | ConvertFrom-Json
$pkg.dependencies
$pkg.devDependencies