preactjs / preact
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web-flow 
forwardport from v10.x (#5122)

* Fix hydrate error recovery with null excess DOM children (#5112)

(cherry picked from commit 82ed24ef6)

* perf(hooks): avoid redundant allocations and writes in SCU and diffed (#5115)

(cherry picked from commit 6aced2101)

* Fix memory leak hotspots (#5116)

- render: clear the root Fragment's props.children after commit so replaced vnode generations are not retained

- unmount: clear component._globalContext with the other component references

(cherry picked from commit bd0302ddc)

* Flush subtree effects (#5055)

(cherry picked from commit d9e898430)

* Fix useId stability across async Suspense (#5108)

Assisted-By: devx/1b997072-d89c-4f6a-a18f-9525b3ef7a9e
(cherry picked from commit 67f02906e)

* Fix error recovery for partially rendered subtrees (#5120)

When a component throws after `diffChildren()` has already started, its
`newVNode._children` may contain partially mounted children. The error recovery
path always replaced those children with `oldVNode._children`, which can be
`undefined` during initial mount.

That loses the partially rendered subtree, so children that queued updates are
not unmounted and keep their _parentDom. A later queued update can then call
`getDomSibling()` through an ancestor whose `_children` is undefined and crash.

Only restore old children when the new vnode has no children yet, and discard
commit/ref queue entries produced by the failed partial render so lifecycles from
the aborted subtree are not committed.

(cherry picked from commit 1a3b8b56b)

576 of 594 branches covered (96.97%)

24 of 24 new or added lines in 2 files covered. (100.0%)

1 existing line in 1 file now uncovered.

2154 of 2187 relevant lines covered (98.49%)

810.26 hits per line

Relevant lines Covered
2187 RELEVANT LINES 2154 COVERED LINES
810.26 HITS PER LINE
Source Files on master

Recent builds

Builds Branch Commit Type Ran Committer Via Coverage
28243481061 main forwardport from v10.x (#5122) * Fix hydrate error recovery with null excess DOM children (#5112) (cherry picked from commit 82ed24ef6) * perf(hooks): avoid redundant allocations and writes in SCU and diffed (#511... push web-flow github
98.49
28179027625 forwardport-v10x Merge 807538556 into bb52524ed Pull #5122 web-flow github
98.49
28178493473 forwardport-v10x Merge dd73a04c6 into bb52524ed Pull #5122 web-flow github
98.53
28178366928 forwardport-v10x Merge 1e5487502 into bb52524ed Pull #5122 web-flow github
98.53
28149999343 main Implement streamed hydration rfc (#5035) * Implement streamed hydration rfc * Golfing push web-flow github
98.53
28149929714 streamed-hydration Merge 1be190b19 into 03253d5bd Pull #5035 web-flow github
98.53
28149901312 main ci: bump pinned GitHub actions (#5110) push web-flow github
98.53
27457122721 ci/bump-pinned-github-actions Merge 847236fd6 into 54f628c62 Pull #5110 web-flow github
98.53
27411550950 fix-hardenedjs-compat Merge a628f412d into 54f628c62 Pull #5078 web-flow github
98.54
27318722503 upgrade-to-pnpm Merge 060a238b9 into 54f628c62 Pull #5085 web-flow github
98.53
See All Builds (7722)