v16.3.0-preview.10

Summary

Misc Changes Unify allow-runtime with Partial Prefetching: #96106 Attempt static prefetch before resorting to runtime: #96095 Block prefetch task until sufficient response is received: #96017 Use a safe clock for Request Insights bookkeeping: #96274 Count key length in remaining byte-budgeted LRUs: #96231 Serve cached misses from the filesystem route cache: #96230 Count URL key length in the filesystem route cache LRU: #96229 Turbopack: Only extend the watcher's batch window for unfiltered events: #96186 Turbopack: Store watcher batch state with bitflags instead of 4 different sets: #96114 docs: document query-only href resolution and fix with-vercel-blob : #96280 Micro-optimization for string format: #95774 Upgrade React from 28cd4bb0-20260723 to 756fdd47-20260727 : #96270 [test] Unflake more tests: #96081 [test] Run the navigation e2e suite under cacheComponents: #95877 [test] Run more test suites under cacheComponents flag, again: #96196 [test] Unflake a prefetch-related race: #96222 docs(ai-agents): restructure as steps and close 16.2/16.3 coverage gaps: #96247 Replace vendored http-proxy with httpxy : #96060 Update vendored @mswjs/interceptors to 0.41.9: #96059 Track whether runtime data is accessed during prefetch: #95964 Add Instant Insights request timing: #95958 [turbopack] Tree-shake module.exports = {...} (CJS): #95996 [turbopack] Fix de-opt in getChunkRelativeUrl(): #96183 Add shell offset to static segment prefetches: #95963 Turbopack: support import.meta.glob caseSensitive option: #96226 fix(sandbox): release one-shot timeout ids after they run: #96161 Fix dev overlay symbolication for project paths needing percent-encoding: #96221 [internal] Add a skill for benching changes in a sandbox: #95943 Run dev validation in process when using Webpack: #96219 Read chunk source maps from disk in the dev validation worker: #96218 Retry the source map lookup with a plain path: #96215 Pass fallback params to the dev validation worker as maps: #96210 [sourcemaps] Reuse source map payloads and consumers across stack frames: #96198 fix: release compression stream when client disconnects mid-response: #96173 Run Cache Components dev validation on a worker thread: #96153 Add a benchmark for dev Cache Components validation on a worker thread: #96152 [test] Unflake the enabled-features-trace test suite: #96175 [refactor] Prepare dev validation for running on a worker thread: #96151 Add the experimental.devValidationWorker config flag: #96150 [refactor] Model dev validation render outputs as a discriminated union: #96149 Forward dev invalid dynamic usage errors from the render, not validation: #96148 Optimize implicit cache tag derivation: #96120 Avoid quadratic HMR queue shifts: #96137 [sourcemaps] Use file: sourcemaps for Turbopack to improve dev performance: #95946 Give RouteCacheEntry a single hidden class across its lifecycle: #96164 Keep optimistic-route param handling monomorphic: #96169 Store RouteTree slots in a Map to keep slot access monomorphic: #96168 Make reifyRouteTree object literals match the canonical RouteTree key order: #96162 Keep VaryPath monomorphic by making isRootParam required: #96122 docs: expand and modernize the Single-Page Applications guide: #95860 docs: navigation interrupts after streaming has started (notFound, forbidden, unauthorized): #95851 docs: reframe prefetching around automatic vs. controllable behavior: #95896 docs(view-transitions): fix the skill install command: #96142 Include additional prerender metadata about build-time routes: #96080 Optimize app page entry analysis: #96058 [ts-plugin] Preserve TypeScript quick info metadata: #95863 [turbopack] Import Webpack's tests for tree-shaking: #95811 [turbopack] Drop dead require() calls: #95718 [turbopack] Track usage of modules imported with require() : #95717 Return plain text 404 for non-document requests to unknown paths: #95930 [RSC HMR] Fix a flurry of refetches when a editing component imported from many routes: #96102 [turbopack] Track re-exports in import_usage inside of compute_import_usage : #95989 Turbopack: Very minor improvements for watcher loop: #96103 Turbopack: Refactor watcher event handling and batching logic: #96087 fix: remove deprecated url.parse() from custom-server example: #96105 Upgrade React from 711c445b-20260722 to 28cd4bb0-20260723 : #96100 Throw for empty or incomplete generateStaticParams results with output: export: #95969 Throw when generateStaticParams returns invalid values: #95968 Remove inert experimental.viewTransition flag: #96098 Restore partial fallback shell upgrade coverage: #96096 fix(next/font/google): bound Google Fonts fetch timeout on Turbopack: #95981 Rewrite edge server source map sources in Rust, drop JS fallback: #95980 docs: view transitions guide — skill section, source-audit fixes, flag-removal docs: #96097 Restore canary version 16.3.0-canary.94 after v16.3.0-preview.9 preview release Credits Huge thanks to @acdlite , @DavidIlie , @gaearon , @bgw , @icyJoseph , @jimmyhmiller , @vercel-release-bot , @aurorascharff , @eps1lon , @timneutkens , @sampoder , @petehunt , @unstubbable , @marcoshernanz , @gnoff , @devjiwonchoi , @wasim-builds , and @lukesandberg for helping!

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