v0.0.48

What's Changed

New Features

• Added concurrency control flag for prerendering operations
• Added route graph manifest read model for better routing introspection
• Added artifact compatibility metadata for App Router deployments
• Added navigation trace reason-code system for debugging client-side routing
• Added semantic route graph identifiers for improved routing analysis
• Added visible commit version tracking for browser state management
• Added disabled cache proof model for server-side caching scenarios
• Server startup logging is now displayed during prerendering

Bug Fixes

• Fixed ISR app cache regeneration to be variant-safe, preventing cache inconsistencies
• Fixed SSR external module handling (ssr.external: true) in App Router configurations
• Fixed middleware execution by properly stripping internal headers
• Fixed route refresh and traversal outcomes with proper gating logic
• Fixed generateStaticParams validation errors to propagate correctly
• Fixed server action argument decoding with proper size limits
• Fixed App RSC route-match path canonicalization
• Fixed stale server action commits from being processed
• Fixed Windows deployment issues with wrangler .CMD shim resolution
• Fixed parallel slot route rendering for layout-only configurations
• Fixed dynamic segment name parsing to accept any non-] characters (Next.js parity)
• Fixed metadata merge behavior and Twitter card inheritance to match Next.js
• Fixed nested parallel slot sub-route discovery from layout-only parents
• Fixed redirect() and notFound() handling under loading.tsx components
• Fixed well-known property protection in thenable params implementation
• Fixed URL parameter decoding using decodeURIComponent
• Fixed invalid HTTP method handling in App route handlers (now returns 400)
• Fixed RSC cache-busting parameter validation
• Fixed revalidate = false support for App route segment configuration
• Fixed non-standard robots directive support via other field
• Fixed generateStaticParams error handling to catch errors per-source rather than per-loop
• Fixed internal Next.js header filtering from inbound requests

Performance

• Improved ISR performance by caching misses from streamed renders
• Optimized client reference preloads by coalescing multiple requests

Internal / Chores

• Updated Next.js dependency version
• Updated React dependency version
• Extensive internal refactoring to dedupe common patterns and utilities across the codebase
• Removed unused deprecated exports from shims
• Enhanced test coverage for App Router navigation lifecycle and root-layout behavior

Contributors

@NathanDrake2406
@james-elicx
@jgeurts
@piffie