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Add changelog details matching release notes: https://github.com/facebook/react/releases/tag/v19.1.1

@github-actions github-actions bot added the React Core Team Opened by a member of the React Core Team label Jul 28, 2025
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Comparing: cc01584...91a31ee

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable/react-dom/cjs/react-dom.production.js = 6.68 kB 6.68 kB = 1.83 kB 1.83 kB
oss-stable/react-dom/cjs/react-dom-client.production.js = 530.70 kB 530.70 kB = 93.70 kB 93.70 kB
oss-experimental/react-dom/cjs/react-dom.production.js = 6.69 kB 6.69 kB = 1.83 kB 1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js = 655.25 kB 655.25 kB = 115.40 kB 115.40 kB
facebook-www/ReactDOM-prod.classic.js = 675.13 kB 675.13 kB = 118.75 kB 118.75 kB
facebook-www/ReactDOM-prod.modern.js = 665.56 kB 665.56 kB = 117.11 kB 117.11 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against 91a31ee

@jackpope jackpope merged commit eaee530 into facebook:main Jul 28, 2025
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@jackpope jackpope deleted the changelog-19.1.1 branch July 28, 2025 16:09
@gaearon
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gaearon commented Jul 28, 2025

The last two items seem a bit misleading to classify as "React" since they probably only affect the RN renderer (not the React package) and don't get released until someone syncs RN? Should they even be in the React changelog at all?

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gaearon commented Jul 28, 2025

I'll PR with rationale

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gaearon commented Jul 28, 2025

#34023

@jackpope
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Yes thats fair. I only included because they were intentional bug fixes to unblock the next RN version and avoid us having to customize the renderer flags outside of the OSS releases. I'm fine with it moving from this changelog to the next entry for RN.

gaearon added a commit that referenced this pull request Jul 28, 2025
See
#34021 (comment).

The purpose of the changelog is to communicate to React users what
changed in the release.

Therefore, it is important that the changelog is written oriented
towards React end users. Historically this means that we omit
internal-only changes, i.e. changes that have no effect on the end user
behavior. If internal changes are mentioned in the changelog (e.g. if
they affect end user behavior), they should be phrased in a way that is
understandable to the end user — in particular, they should not refer to
internal API names or concepts.

We also try to group changes according to the publicly known packages.

In this PR:

- Make #33680 an actual link (otherwise it isn't linkified in
CHANGELOG.md on GitHub).
- Remove two changelog entries listed under "React" that don't affect
anyone who upgrades the "React" package, that are phrased using
terminology and internal function names unfamiliar to React users, and
that seem to be RN-specific changes (so should probably go into the RN
changelog that goes out with the next renderer sync that includes these
changes).
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5 participants