What's new
in Solo Kit

Next.js 15 Features

• React 19 support with improved concurrent features
• Turbopack improvements for faster development builds
• Enhanced App Router with better caching strategies
• Improved Static Site Generation with partial prerendering

Performance Optimizations

Significant improvements across the board:

• Bundle size reduction by 15% through better tree-shaking
• Faster page loads with optimized hydration
• Improved Core Web Vitals scores across all pages
• Better image optimization with next/image enhancements

New Developer Features

• Enhanced TypeScript support with better inference
• Improved error overlay with actionable suggestions
• Better debugging tools for server components
• Enhanced middleware capabilities for custom routing

API Improvements

• Server Actions stability improvements and new patterns
• Route Handlers with better type safety
• Metadata API enhancements for SEO optimization
• Edge Runtime optimizations for better performance

Migration Benefits

• Backward compatibility maintained for smooth upgrades
• Automatic code migrations for deprecated patterns
• Performance gains without code changes
• Future-ready architecture for upcoming React features

This upgrade positions Solo Kit at the cutting edge of modern web development with the latest React and Next.js capabilities.

New Design System Components

• Enhanced Button variants with new ghost, destructive, and link styles
• Improved Form controls with better focus states and validation feedback
• Advanced Data tables with sorting, filtering, and pagination
• Interactive Timeline component for changelog and activity feeds

Animation & Micro-interactions

Enhanced user experience with smooth animations:

• Page transitions with fade and slide effects
• Loading states with skeleton loaders and spinners
• Hover effects on interactive elements
• Form feedback with success/error animations

Mobile-First Improvements

• Responsive navigation with collapsible mobile menu
• Touch-friendly interactions with proper tap targets
• Improved scrolling performance on mobile devices
• Optimized typography scaling across all screen sizes

Accessibility Enhancements

• WCAG 2.1 AA compliance across all components
• Keyboard navigation improvements throughout the app
• Screen reader support with proper ARIA labels
• High contrast mode support for better visibility

Theme System Expansion

• Custom color palettes for brand customization
• Dark mode optimization with improved contrast ratios
• System preference detection for automatic theme switching
• Theme persistence across browser sessions

This release transforms Solo Kit into a modern, accessible, and beautiful application that users love to interact with.

Animation System

• Page transitions with smooth enter/exit animations
• Component animations for interactive elements
• Layout animations that adapt to content changes
• Gesture support for mobile-friendly interactions

Micro-interactions

Delightful details that enhance usability:

• Button hover effects with spring animations
• Loading spinners with custom easing curves
• Form feedback with success/error animations
• Navigation highlights with smooth position changes

Performance Optimizations

• Hardware acceleration for smooth 60fps animations
• Reduced layout thrash with transform-based animations
• Conditional animations based on user preferences
• Memory efficiency with proper cleanup on unmount

Accessibility Features

• Respect motion preferences with prefers-reduced-motion
• Focus management during animated transitions
• Screen reader compatibility with appropriate ARIA attributes
• Keyboard navigation maintained during animations

Animation Variants

• Stagger animations for list items and grids
• Orchestrated sequences for complex interactions
• Responsive animations that adapt to screen size
• Theme-aware animations that work in light/dark modes

Developer Experience

• Type-safe animations with TypeScript support
• Reusable variants for consistent motion language
• Animation debugging tools for development
• Documentation examples for common patterns

Component Library

• Animated layouts with auto-sizing capabilities
• Modal transitions with backdrop animations
• Carousel components with gesture controls
• Loading states with engaging placeholder animations

These animations bring Solo Kit to life while maintaining excellent performance and accessibility standards.

New OAuth Providers Added

• Google OAuth - Complete setup with type-safe configuration
• GitHub OAuth - Developer-friendly authentication for technical users
• Discord OAuth - Perfect for community-driven applications

Session Management Improvements

Enhanced session handling with better security and performance:

• Secure session tokens with automatic rotation
• Remember me functionality for better UX
• Multi-device support with session management dashboard
• Automatic cleanup of expired sessions

Type Safety Enhancements

• Fully typed auth hooks throughout the application
• Schema validation for all auth-related forms
• TypeScript interfaces for OAuth provider responses
• Enhanced error handling with proper type definitions

Security Hardening

• Rate limiting on auth endpoints to prevent abuse
• CSRF protection for all authentication flows
• Secure headers implementation across auth routes
• Session hijacking protection with IP validation

Developer Experience

• Auth setup guide with step-by-step instructions
• Demo credentials for instant development setup
• Debug endpoints for testing authentication flows
• Comprehensive logging for troubleshooting

This release makes Solo Kit's authentication system production-ready while maintaining the smooth development experience developers love.

TypeScript 5.0 Upgrade

• Decorators support for better framework integration
• Const type parameters for more precise typing
• Bundle size reduction with smaller runtime overhead
• Improved performance in large codebases

Enhanced Type Safety

Stronger typing throughout the application:

• Strict mode enabled across all packages
• Better API response typing with generated schemas
• Improved form validation with Zod integration
• Database query type safety with Drizzle ORM

Developer Experience Improvements

• Better IntelliSense with improved autocomplete
• Faster type checking with incremental builds
• Enhanced error messages with actionable suggestions
• Improved refactoring support in IDEs

New Type Utilities

• Custom utility types for common patterns
• Environment variable typing with compile-time validation
• API client types auto-generated from schemas
• Component prop typing with better inference

Code Quality Enhancements

• Stricter ESLint rules with TypeScript integration
• Automated type imports configuration
• Path mapping for cleaner imports
• Type-only imports optimization for better performance

Documentation Updates

• Type examples in all component documentation
• Migration guide for upgrading existing codebases
• Best practices guide for TypeScript patterns
• Common patterns documentation with examples

These improvements make Solo Kit more reliable, maintainable, and enjoyable to work with while catching more errors at compile time.

Query Performance Improvements

• Optimized database indexes for frequently accessed tables
• Query optimization reducing average response time by 40%
• Prepared statements implemented across all database operations
• N+1 query elimination in user and organization lookups

Connection Management

Enhanced database connection handling:

• Connection pooling with configurable limits
• Automatic retry logic for transient connection failures
• Health checks to ensure database availability
• Graceful degradation when database is under load

Schema Optimizations

• Normalized data structures to reduce redundancy
• Foreign key constraints properly configured
• Column indexing strategy refined for common queries
• Database size reduction through data archiving

Migration Improvements

• Zero-downtime migrations for production deployments
• Rollback capabilities for failed migration scenarios
• Migration validation to prevent schema corruption
• Automated testing of migration scripts

Monitoring & Observability

• Query performance metrics integrated into application monitoring
• Slow query logging with alerting capabilities
• Database health dashboard for real-time monitoring
• Connection pool metrics for capacity planning

These optimizations result in faster page loads, improved user experience, and better scalability for growing applications.

Stripe Integration Fixes

• Webhook signature verification now properly validates all incoming events
• Payment intent handling fixed for declined cards and insufficient funds
• Currency formatting corrected for international payments
• Payment method validation improved to prevent invalid card details

Subscription Management

Fixed critical issues with subscription lifecycle:

• Subscription cancellation now properly handles immediate vs end-of-period
• Proration calculations fixed for mid-billing cycle changes
• Failed payment retry logic improved with exponential backoff
• Grace period handling for failed payments before suspension

Error Handling Improvements

• Payment failure messages now display user-friendly error descriptions
• Retry mechanisms implemented for transient payment failures
• Fallback payment methods automatically suggested when primary fails
• Error logging enhanced for better debugging and monitoring

Security Enhancements

• PCI compliance maintained through proper token handling
• Sensitive data filtering from application logs
• API key rotation process documented and automated
• Webhook endpoint security hardened against replay attacks

User Experience Fixes

• Loading states properly displayed during payment processing
• Success/failure redirects now work correctly across all payment flows
• Mobile payment forms optimized for better usability
• Payment history displays accurate transaction details

These fixes ensure reliable payment processing and improved user confidence in the checkout experience.

TanStack Query Setup

• Complete integration with React components
• SSR compatibility with Next.js App Router
• Optimistic updates for better user experience
• Background refetching for fresh data

Advanced Caching Strategies

Intelligent data management:

• Stale-while-revalidate patterns for instant UI updates
• Query invalidation with smart dependency tracking
• Offline support with cached data fallbacks
• Memory optimization with automatic garbage collection

Real-time Features

• WebSocket integration for live data updates
• Polling strategies for frequently changing data
• Mutation synchronization across multiple tabs
• Conflict resolution for concurrent updates

Developer Tools

• DevTools integration for debugging queries
• Query inspection with detailed cache information
• Performance monitoring for slow queries
• Error boundary integration for better error handling

Performance Benefits

• Reduced API calls through intelligent caching
• Faster page loads with prefetched data
• Better UX with loading and error states
• Optimized re-renders with selective updates

Common Patterns

• Infinite queries for pagination and scrolling
• Dependent queries with conditional fetching
• Parallel queries for multiple data sources
• Mutation queues for reliable data updates

This integration transforms data fetching from a pain point into a powerful feature that enhances both developer experience and application performance.

Template System Overhaul

• React Email templates with improved cross-client compatibility
• Responsive design that works across all email clients
• Brand customization with configurable colors and logos
• Template previews in development environment

Multi-Provider Support

Enhanced email delivery with provider redundancy:

• Primary/fallback providers for improved delivery rates
• Automatic failover when primary provider is unavailable
• Provider-specific optimizations for Resend, SendGrid, and Postmark
• Delivery analytics tracking across all providers

Delivery Reliability

• Retry logic for failed email sends with exponential backoff
• Bounce handling with automatic list management
• Spam score checking before sending campaigns
• Delivery status tracking with webhook integration

Development Experience

• Email preview mode for testing without sending
• Template hot-reloading during development
• Test email commands for debugging email flows
• Email logs with detailed delivery information

Personalization Features

• Dynamic content based on user preferences and behavior
• Merge tags for personalized email content
• Conditional sections showing relevant information only
• A/B testing support for email campaigns

Performance Improvements

• Bulk sending optimization for newsletters and announcements
• Queue management for high-volume email processing
• Template caching to reduce rendering time
• Image optimization for faster email loading

These improvements ensure reliable email delivery while providing a great experience for both developers and end users.