v3.4.0

Added

• Event System & Observability: Comprehensive event-driven architecture for monitoring async operations
  • EventDispatcher class for managing event listeners and firing events
  • Promise lifecycle events: promise.created, promise.resolved, promise.rejected, promise.timeout
  • Event classes: PromiseCreated, PromiseResolved, PromiseRejected, PromiseTimeout
  • Helper functions: listen(), eventDispatcher() for easy event handling
• Metrics Collection: Built-in performance monitoring and statistics
  • MetricsCollector class for tracking promise performance and statistics
  • Real-time metrics: active promises, completion rates, success rates, timing data
  • Detailed counters for different operation types and error classes
  • Helper functions: getMetrics(), metricsCollector() for accessing metrics data
• Enhanced Debugging: Event-driven debugging capabilities for better async operation visibility
  • Promise ID generation for tracking individual operations
  • Duration tracking for all async operations
  • Error classification and counting
  • Performance profiling with percentile statistics (p50, p95, p99)
• Comprehensive Test Coverage: Full unit and integration tests for all event and metrics functionality

Changed

• Async Class Enhancement: Modified Async::coro() and Async::timeout() methods to fire events and collect metrics
• Promise Lifecycle Tracking: All promises now automatically fire events during creation, resolution, rejection, and timeout
• Helper Functions Expansion: Added new helper functions for event system and metrics access

Full Changelog: 3.3.1...3.4.0