Source Map Visualizer

Advanced source map visualization and visual mapping editor for Visual Studio Code.

Features

🔍 Source Map Viewer

• Interactive Visualization: View .map files with synchronized source and generated code
• Smart Connections: Visual bezier curves show mappings between code segments
• Click & Highlight: Click any segment to trace its mapping
• Multiple Styles: Choose between bezier, straight, or step connection lines
• Auto-reload: Automatically updates when source files change

✏️ Visual Desc Editor

• Drag & Drop Mapping: Create source maps visually by connecting code segments
• Character Precision: Map individual characters or ranges with Cmd/Ctrl+Click
• Semantic Types: Assign types (PGM, APP, LAM, INTEGER) to mappings
• Live Validation: Real-time validation ensures correct mappings
• Export to .map: Convert human-readable .desc files to standard source maps

🎯 Additional Features

• File Type Agnostic: Works with any file type (.js, .ts, .uwu, .uplc, etc.)
• Toggle Views: Easy switching between visual and text editor modes
• Browse Integration: File browser buttons for easy file selection
• Performance Optimized: Handles large files with virtualization

Installation

From VSCode Marketplace

1. Open VSCode
2. Go to Extensions (Cmd/Ctrl + Shift + X)
3. Search for "Source Map Visualizer"
4. Click Install

From VSIX Package

code --install-extension sourcemap-visualizer-1.0.0.vsix

Usage

Viewing Source Maps

1. Open any .map file - the visualizer opens automatically
2. Click segments to highlight mappings
3. Use "Open as Text" in title bar to switch to JSON view

Creating Visual Mappings

1. Open a .desc file - the editor opens automatically
2. Click "Add Mapping" to start
3. Cmd/Ctrl+Click characters in the generated panel
4. Click corresponding characters in the source panel
5. Export to standard .map format when done

See the User Guide for detailed instructions.

Requirements

• VSCode 1.74.0 or higher
• Node.js 16.x or higher (for development)

Development

Prerequisites

• Node.js 16+
• VSCode
• (Optional) Nix for reproducible environment

Setup

git clone https://github.com/zw3rk/sourcemap-tools
cd sourcemap-tools
make init     # Install dependencies
make dev      # Start development mode

Available Commands

make help     # Show all available commands
make build    # Build the extension
make test     # Run tests
make lint     # Run linter
make package  # Create .vsix package
make publish  # Publish to marketplace

Project Structure

├── src/              # Extension source code
│   ├── extension.ts  # Main entry point
│   ├── viewer/       # Source map viewer
│   └── editor/       # Desc editor
├── webview/          # Frontend code
│   ├── viewer/       # Viewer UI
│   └── editor/       # Editor UI
├── docs/             # Documentation
├── test/             # Test files
└── resources/        # Icons and assets

Contributing

We welcome contributions! Please see our Contributing Guide for details.

Development Guidelines

• TypeScript strict mode must be enabled
• All code must pass linting (make lint)
• Tests must pass (make test)
• Follow existing code style

Support

• 📖 User Guide
• 🐛 Report Issues

License

Apache License 2.0 - see LICENSE for details.

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Made with ❤️ in 🇸🇬 Singapore by zw3rk pte. ltd.