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Signals Library - Development Roadmap

Reactive State Management for Go - Inspired by Angular Signals Approach: Angular-compatible API with Go idioms and zero allocations

Last Updated: 2025-10-31 Current Version: v0.1.0 (Stable!) Strategy: Core complete → Documentation → v1.0.0 stable Target: v1.0.0 stable (2026-02-15)

🎯 Vision

Build a production-ready, type-safe reactive state management library for Go that brings the power of Angular Signals to the Go ecosystem with full type safety, thread-safety, and zero allocations in hot paths.

Key Advantages

✅ Angular Signals Compatible

  • Immediate effect execution (Angular pattern)
  • Computed signals with memoization
  • Proper cleanup sequence
  • Read-only encapsulation (AsReadonly)

✅ Go-First Design

  • Full generics support (Go 1.25+)
  • context.Context integration
  • Thread-safe (sync.RWMutex)
  • Zero allocations in hot paths
  • Panic recovery throughout

✅ Production Ready

  • 51 tests, 68.3% coverage
  • Race detector clean
  • Comprehensive benchmarks
  • CI/CD configured

🚀 Version Strategy

Philosophy: Core Complete → Documentation → Stable

v0.1.0-beta (Core complete) ✅ RELEASED 2025-10-31
         ↓ (stabilization)
v0.1.0 (Stable core) ✅ RELEASED 2025-10-31
         ↓ (2-4 weeks)
v0.2.0 (Documentation + Examples) 🎯 NEXT
         ↓ (2-3 weeks)
v0.3.0 (Advanced features)
         ↓ (1-2 weeks)
v1.0.0-RC (Feature complete + API freeze)
         ↓ (2-3 weeks community testing)
v1.0.0 STABLE → Production release

Critical Milestones

v1.0.0-RC = ALL features done + API stable

  • API freeze - no breaking changes
  • Community testing phase
  • Only bug fixes, no new features
  • Complete documentation

🎉 Recent Progress

✅ v0.1.0-beta RELEASED (2025-10-31)

Sprint Duration: 1 day (~16 hours) - All core features complete! 🚀

Completed Phases (3/3 - 100%):

Phase 1: Core Signal[T] ✅

  • Generic reactive state with type safety
  • Thread-safe reads/writes (sync.RWMutex)
  • Map-based subscribers (O(1) unsubscribe)
  • context.Context integration
  • Custom equality functions
  • Panic recovery in callbacks
  • 24 tests passing
  • Performance: Get: 28.8ns/op, Set: 52.8ns/op

Phase 2: Computed Signals ✅

  • Type erasure solution (deps ...any)
  • Lazy evaluation + memoization
  • Double-check locking optimization
  • atomic.Bool dirty flag (lock-free)
  • Support for mixed-type dependencies
  • Chained computed signals
  • 13 tests passing
  • Performance: Clean: 20.65ns/op (2.4x target!), Dirty: 70.5ns/op

Phase 3: Effects ✅

  • Immediate execution (Angular pattern)
  • Cleanup support (old cleanup → effect → new cleanup)
  • Thread-safe Stop() with atomic.Bool
  • Panic recovery in effect and cleanup
  • Works with computed signals
  • 14 tests passing
  • Performance: Execute: 128.8ns/op, Stop: 1,470ns/op
  • Zero allocations in hot paths! 🔥

Repository Infrastructure ✅

  • Professional README.md
  • Complete CI/CD (GitHub Actions)
  • Community files (CONTRIBUTING, CODE_OF_CONDUCT, SECURITY)
  • Makefile with 20+ targets
  • LICENSE (MIT)
  • CHANGELOG.md

Quality Metrics:

  • ✅ 51/51 tests passing (100%)
  • ✅ 68.3% test coverage (target: >70%)
  • ✅ 0 race conditions
  • ✅ 0 lint issues
  • ✅ Zero allocations in hot paths

📋 Roadmap Details

✅ v0.1.0-beta - Core Complete

Status: Released 2025-10-31

All reactive primitives implemented and tested:

  • Signal[T] - Reactive state management
  • Computed[T] - Derived state with memoization
  • Effect - Side effects with cleanup
  • Thread-safety throughout
  • Panic recovery
  • Zero allocations in hot paths
  • Complete test suite (51 tests)
  • Repository infrastructure
  • CI/CD configured

✅ v0.1.0 (CURRENT) - Stable Core Release

Status: Released 2025-10-31 Focus: API stabilization and production readiness

Completed:

  • golangci-lint compliance (0 issues)
  • All documentation updated for accuracy
  • API stability guarantees in place
  • Semantic versioning commitments

Success Criteria (Met):

  • ✅ Zero critical bugs
  • ✅ All tests passing (51 tests)
  • ✅ 67.9% test coverage
  • ✅ Production-ready
  • ✅ 100% Angular Signals compatible

Note: First stable release. Core API is now stable with no breaking changes planned before v2.0.0.

🎯 v0.2.0 (Next) - Documentation & Examples

Target: 2026-01-15 (2-4 weeks after v0.1.0) Focus: Make the library easy to use

Documentation

User Guides:

  • INSTALLATION.md - Setup and requirements
  • QUICKSTART.md - Get started in 5 minutes
  • CONCEPTS.md - Core concepts explained
  • API_REFERENCE.md - Complete API documentation
  • MIGRATION.md - From other reactive libraries
  • TROUBLESHOOTING.md - Common issues
  • FAQ.md - Frequently asked questions

Architecture Docs:

  • ARCHITECTURE.md - How it works internally
  • PERFORMANCE.md - Benchmarks and optimization
  • BEST_PRACTICES.md - Patterns and anti-patterns

Examples

Basic Examples:

  • Counter app (Signal basics)
  • Todo list (Computed signals)
  • Form validation (Effects)
  • Shopping cart (All features combined)

Advanced Examples:

  • HTTP server with reactive state
  • WebSocket real-time updates
  • CLI app with reactive UI
  • Data pipeline with computed chains

Integration Examples:

  • Integration with popular frameworks
  • Testing strategies
  • Debugging techniques

Improvements

API Enhancements:

  • Batch updates (reduce notifications)
  • Conditional effects (run only when condition met)
  • Resource tracking helpers
  • Debug mode with tracing

Developer Experience:

  • More descriptive error messages
  • Better panic recovery context
  • Performance profiling tools
  • Memory usage tracking

Success Criteria:

  • Complete user guides
  • 10+ working examples
  • API documentation with examples
  • 75%+ test coverage

🔮 v0.3.0 - Advanced Features

Target: 2026-02-01 (2-3 weeks) Focus: Power user features

Advanced Reactivity

Batching & Scheduling:

  • Effect batching (multiple changes → single run)
  • Debounced effects (rate limiting)
  • Throttled effects (periodic execution)
  • Priority-based scheduling

Resource Management:

  • Resource tracking (automatic cleanup)
  • Lifecycle hooks (onCreate, onDestroy)
  • Effect groups (start/stop multiple effects)
  • Memory leak detection tools

Performance Monitoring:

  • Effect execution metrics
  • Computed cache hit ratio
  • Signal change frequency tracking
  • Performance profiling API

Developer Tools

Debugging:

  • Signal dependency graph visualization
  • Effect execution tracing
  • State change history
  • Debug assertions mode

Testing Utilities:

  • Test helpers for signal mocking
  • Effect execution control in tests
  • Snapshot testing support
  • Performance regression tests

Success Criteria:

  • All advanced features implemented
  • Complete test coverage (>80%)
  • Performance benchmarks
  • Documentation for power users

🚀 v1.0.0-RC - Release Candidate

Target: 2026-02-15 (1-2 weeks) Focus: API freeze and community testing

API Finalization

API Review:

  • Review all public APIs for consistency
  • Ensure naming follows Go conventions
  • Document all exported types/functions
  • API freeze - no breaking changes after this

Compatibility:

  • Backwards compatibility guarantees
  • Deprecation policy defined
  • Migration guide from beta versions
  • Semantic versioning commitment

Quality Assurance

Testing:

  • 90%+ test coverage
  • Stress tests (1M+ operations)
  • Memory leak tests (long-running)
  • Race condition tests (parallel access)
  • Fuzzing tests for edge cases

Performance:

  • Benchmark all operations
  • Compare with other libraries
  • Identify bottlenecks
  • Optimize hot paths further

Documentation:

  • Complete API reference
  • All examples working and tested
  • Performance benchmarks published
  • Architecture documentation complete

Community Validation

Feedback Collection:

  • Open beta program
  • Collect community feedback
  • Real-world usage validation
  • Bug reports and fixes

Success Criteria:

  • API frozen and stable
  • 90%+ test coverage
  • Zero known critical bugs
  • Positive community feedback
  • 2+ weeks of stable testing

🎊 v1.0.0 - Stable Release

Target: 2026-03-01 (After 2-3 weeks of RC testing) Focus: Production-ready stable release

Release Preparation

Final Validation:

  • All RC feedback addressed
  • Final security audit
  • Final performance validation
  • Documentation review

Release Artifacts:

  • Tagged release on GitHub
  • pkg.go.dev documentation
  • Release notes published
  • Migration guide from beta

Guarantees

Stability Promises:

  • ✅ No breaking changes in 1.x series
  • ✅ Security patches for 1+ year
  • ✅ Bug fixes for 1+ year
  • ✅ Go 1.25+ compatibility

Support:

  • GitHub Issues for bug reports
  • Discussions for questions
  • Examples repository
  • Community-driven improvements

🔮 Future (v1.1.0+)

Post-1.0 Enhancements

Performance:

  • Lock-free signal updates (atomic operations)
  • Computed signal glitch prevention
  • Effect coalescing optimization
  • Custom scheduler support

Advanced Features:

  • Async signals (Promise-like)
  • Signal arrays (lists of reactive values)
  • Nested computed signals optimization
  • Cross-goroutine signal synchronization

Integrations:

  • Template engine integration (html/template)
  • Logging integration (slog)
  • Metrics integration (Prometheus)
  • Tracing integration (OpenTelemetry)

Tooling:

  • Signal inspector CLI tool
  • VS Code extension for debugging
  • Performance profiling dashboard
  • Dependency graph visualization

📊 Progress Tracking

Current Status (v0.1.0 Stable)

Core Features:       [████████████████████] 100% ✅
Documentation:       [███░░░░░░░░░░░░░░░░░]  15%
Examples:            [██░░░░░░░░░░░░░░░░░░]  10%
Advanced Features:   [░░░░░░░░░░░░░░░░░░░░]   0%
Community:           [█░░░░░░░░░░░░░░░░░░░]   5%

Overall Progress:    [████░░░░░░░░░░░░░░░░]  26%

Phase Completion

Phase Status Completion Target Date
Phase 0: Architecture ✅ Complete 100% 2025-10-31
Phase 1: Signal[T] ✅ Complete 100% 2025-10-31
Phase 2: Computed[T] ✅ Complete 100% 2025-10-31
Phase 3: Effect ✅ Complete 100% 2025-10-31
Phase 4: Documentation 🚧 In Progress 15% 2026-01-15
Phase 5: Advanced Features ⏳ Planned 0% 2026-02-01
Phase 6: RC Testing ⏳ Planned 0% 2026-02-15
Phase 7: v1.0.0 Release ⏳ Planned 0% 2026-03-01

🤝 Contributing

We welcome contributions! See CONTRIBUTING.md for guidelines.

Priority Areas

High Priority (v0.2.0):

  1. User documentation and guides
  2. More examples and tutorials
  3. Performance benchmarks
  4. Bug fixes and improvements

Medium Priority (v0.3.0): 5. Advanced features (batching, scheduling) 6. Developer tools and debugging 7. Testing utilities

Low Priority (v1.1.0+): 8. Additional integrations 9. Performance optimizations 10. Nice-to-have features

📞 Support & Feedback

📝 Notes

Version Numbering

Following Semantic Versioning:

  • v0.x.y - Beta releases (API may change)
  • v1.0.0 - First stable release (API frozen)
  • v1.x.y - Stable releases (backward compatible)
  • v2.0.0 - Major release (breaking changes if needed)

Update Frequency

This roadmap is updated:

  • ✅ After each release
  • ✅ Monthly progress reviews
  • ✅ When priorities change

Last Updated: 2025-10-31 Maintainer: @kolkov License: MIT