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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.0.0 - 2025-11-02

Added

  • ✨ Initial production release
  • 🚀 CLI tool for MongoDB data migration and backup
  • 📦 Programmatic API for Node.js integration
  • 🪄 Copy entire databases or specific collections
  • ⚡ Batch processing with adjustable batch size
  • 🧰 Dry-run mode to simulate operations
  • 💾 JSON export/import for backups
  • 🤖 CI-ready with --yes flag to skip confirmations
  • 📊 Beautiful progress feedback with spinners
  • 🧠 Environment-based configuration via .env file
  • 🔧 Support for custom batch sizes
  • 📝 Comprehensive logging with file output option

Fixed

  • 🐛 Environment validation no longer blocks --help command
  • 🐛 JSON export now writes proper array format instead of multiple arrays
  • 🐛 Improved error handling for missing environment variables

Security

  • 🔒 Environment variables validation
  • 🔒 Secure connection string handling

1.1.0 - 2025-11-02

Added

  • ✨ Progress Bars: Real-time visual feedback with document counts during copy operations using cli-progress
  • 🔄 Incremental Backups: Copy only new/updated documents since a specific date using --incremental, --timestamp-field, and --since options
  • 🔑 Index Copying: Automatically copy indexes from source to target collections with --copy-indexes flag
  • ✅ Schema Validation: Optional pre-copy validation to ensure data compatibility with --validate-schema flag
  • 🚀 Performance Optimizations: Enhanced batch processing with streaming and bulk operations for very large datasets
  • 📊 Progress Control: Added --no-progress flag to disable progress bars when needed
  • 🧪 Enhanced Test Coverage: Comprehensive test suite covering all new features, parameter validation, and integration points

Changed

  • 🔧 Improved batch processing with bulkWrite operations for incremental mode
  • 🔧 Optimized cursor streaming for better memory efficiency
  • 📚 Updated documentation with new CLI examples and API usage patterns
  • 📦 Bumped version to 1.1.0 with updated package description

Technical Details

  • Incremental mode uses replaceOne with upsert for efficient document updates
  • Progress bars show collection name, percentage, and document counts
  • Index copying filters out _id_ index and handles conflicts gracefully
  • Schema validation performs test insert/delete to verify compatibility
  • All new features work seamlessly with JSON export/import modes

[Unreleased]

Planned

  • TypeScript version
  • Change streams support for real-time sync
  • Parallel collection processing
  • Compression for JSON exports