v16.4.0-canary.40

Summary

Misc Changes Keep cached root parameters out of generic fallback shells: #98950 Fix missing content in Cached Navigations: #98767 [turbopack] Track members across namespace re-exports: #96396 [PPF] Implement unstable_ensureStatic = "shell" | "prefetch" : #98191 [PPF] Validate unstable_ensureStatic nesting: #98357 Replace lerna task-runner usage with pnpm: #99040 [cd] Fix release branch gate and drop dead lerna publish config: #99039 Turbopack: fix "ModuleId not found for ident" regression: #99090 Fix private-cache segment reuse across root params: #98810 Turbopack: fix Unknown module type error for imports in webpack loaders: #99088 Nudge future defaults upgrades for manual next dev|build : #98874 Nudge latest version upgrades for manual next dev|build : #98873 Nudge security upgrades for manual next dev|build : #98872 Upgrade React from 59aff3e1-20260918 to 8b0da1c6-20260922 : #99059 refactor(turbo-rcstr): drop unsupported 16-byte pointer width: #98355 test(turbo-tasks-backend): run the db_versioning tests on wasm: #97901 fix(turbo-tasks): let parking_lot block on wasm instead of panicking: #97860 test(turbo-tasks): run the wasm tests with a Node wasi host: #97789 [cd] Skip the release job when no new commits warrant a release: #98664 [test] Add fallback param deployment regression coverage: #98883 Turbopack: mangle exports behind an escaping namespace via the facade: #97770 test(dev): add dedicated compiler polling coverage: #97673 build(turbopack): upgrade notify to 9.0.0-rc.5: #98737 test(turbopack): add polling to filesystem watcher fuzzer: #98863 test(turbopack): fix filesystem watcher symlink expectations: #98983 test(turbopack): fix filesystem watcher read-write tracking: #98982 Don't re-request the App Shell to upgrade an ISR fallback: #94808 Fix unstable ensure static task annotation: #99075 test: update React 18 hydration error snapshots: #99073 Remove redundant unsafe_ignore annotations: #98961 Remove TraceRawVcs: #98953 test(turbopack): remove remaining test unmarks: #98376 Credits Huge thanks to @gnoff , @unstubbable , @sampoder , @lubieowoce , @eps1lon , @mischnic , @devjiwonchoi , @sokra , @acdlite , and @lukesandberg for helping!

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