Ffetch v2.0 Is Out!

Ffetch v2.0 is out!

Ffetch is a lightweight, production-ready TypeScript-first drop-in replacement for native fetch.

This version has no breaking changes, but a couple of major improvements and a complete overhaul of the documentation.

Bug Fixes

Critical Signal Handling Issues

• Fixed AbortSignal.any fallback - Was completely broken and ignoring user signals
• Fixed signal duplication bug - transformRequest hook could cause same signal to be added twice
• Fixed transformRequest signal preservation - Signals from transformed requests are now properly combined

Compatibility Issues

• Removed mandatory AbortSignal.timeout requirement - Now works in older environments
• Added manual timeout implementation - Falls back to setTimeout + AbortController when AbortSignal.timeout unavailable
• Enhanced signal combination logic - Properly handles multiple signals (user + timeout + transformed)

Timeout Behavior

• Fixed timeout: 0 handling - Now properly disables timeout instead of causing errors
• Better timeout signal cleanup - Prevents memory leaks in complex abort scenarios

New Features

Enhanced Error System

• Better error type detection - More precise mapping of native errors to custom types
• Preserved original errors - All custom errors maintain .cause property with original error
• Improved error context - Better error messages and debugging information

Request Tracking

• Added pending requests tracking - client.pendingRequests array to monitor active requests
• Proper request lifecycle management - Automatic cleanup when requests complete

Documentation & Developer Experience

• Comprehensive Documentation Overhaul
  • Migration guide - Complete guide for transitioning from native fetch
  • Enhanced API documentation - Better examples and edge case coverage
  • Advanced usage patterns - Detailed hooks and configuration examples
  • Compatibility documentation - Environment requirements and polyfill guidance
  • To be perfectly honest, I relied heavily on AI to write the documentation. It still needs some polishing, but it's a huge improvement over the previous version.

GitHub: gkoos/ffetch

Any feedback or contributions are welcome in the GitHub repository.