RichText: Remove dead exports and consolidate deprecations

[Mamaduka]

What?

Removes the unused PrivateRichText private API and the dead createLinkInParagraph util, moves the onSplit deprecation into withDeprecations, and breaks the content.jsx / index.jsx import cycle. No user-visible change.

Why?

PrivateRichText existed so Caption could pass readOnly (#58916); its last consumer was dropped in #74771. createLinkInParagraph was React Native only (#35204) and lost its caller in #78747.

How?

All deprecated prop handling (array value, multiline, onSplit) now sits in withDeprecations. isEmpty moves to utils.jsx, so content.jsx no longer imports the component from ./. withDeprecations keeps its forwardRef since @wordpress/element still supports React 18.

Testing Instructions

1. Open a post or page.
2. Insert a Paragraph block, type text, and press Enter. A new paragraph is created.
3. Insert an Image block, add a caption, and press Enter at its end. A paragraph is inserted after the image.

[github-actions]

🤖 PR meta 🤖

📦 Bundle size

Size Change: -57 B (0%)

Total Size: 8.22 MB

📦 View Changed

Filename	Size	Change
build/scripts/block-editor/index.min.js	505 kB	-57 B (-0.01%)

_{059728e Run}

⚡ Performance

Show the results

Client side metrics exclude the server response time.

front-end-block-theme

Metric	09d9ca9	trunk	% Change
timeToFirstByte	58.1 ms +9.38% -5.59%	55.7 ms +3.05% -2.6%	4.31%
largestContentfulPaint	94 ms +8.51% -6.38%	92 ms +4.35% -4.35%	2.17%
lcpMinusTtfb	34.4 ms +6.98% -3.05%	34.6 ms +20.09% -3.9%	-0.58%
wpBeforeTemplate	28.16 ms +18.11% -2.84%	27.05 ms +6.54% -0.81%	4.1%
wpTemplate	24.49 ms +2.9% -3.92%	23.62 ms +5.5% -3.73%	3.68%
wpTotal	54.3 ms +8.08% -6.1%	51.74 ms +3.03% -2.57%	4.95%
wpMemoryUsage	7.61 MB +0% -0%	7.57 MB +0% -0%	0.51%
wpDbQueries	17 +0% -0%	17 +0% -0%	0%

front-end-classic-theme

Metric	09d9ca9	trunk	% Change
timeToFirstByte	40.55 ms +5.92% -1.97%	45.05 ms +9.43% -1%	-9.99%
largestContentfulPaint	88 ms +6.82% -0%	100 ms +4% -0%	-12%
lcpMinusTtfb	48.1 ms +1.35% -1.35%	54.8 ms +1.09% -1%	-12.23%
wpBeforeTemplate	24.11 ms +1.91% -2.41%	23.72 ms +5.94% -0.97%	1.64%
wpTemplate	13.43 ms +3.13% -0.74%	18.13 ms +2.7% -1.54%	-25.92%
wpTotal	37.72 ms +6.1% -2.6%	41.9 ms +9.47% -1.07%	-9.98%
wpMemoryUsage	6.09 MB +0% -0%	6.19 MB +0% -0%	-1.64%
wpDbQueries	10 +0% -0%	14 +0% -0%	-28.57%

media-processing

Metric	09d9ca9	trunk	% Change
mediaProcessingJpeg	413.09 ms +0.71% -0.63%	409.09 ms +0.73% -0.94%	0.98%
mediaProcessingAvif	6206 ms +0.22% -0.13%	6135.38 ms +0.36% -0.17%	1.15%
mediaProcessingJpegToAvif	4310.67 ms +0.07% -0.25%	4304.01 ms +0.07% -0.23%	0.15%

media-upload

Metric	09d9ca9	trunk	% Change
jpegUploadProcessing	1686.18 ms +15.38% -14.9%	1412.45 ms +0.73% -0.5%	19.38%
pngUploadProcessing	200.31 ms +7.02% -13.97%	190.03 ms +7.8% -9.71%	5.41%
largeJpegUploadProcessing	1407.33 ms +1.33% -0.75%	1410.53 ms +0.27% -0.68%	-0.23%
multipleImageUploadProcessing	1555.93 ms +0.67% -0.12%	1549.85 ms +1.42% -0.21%	0.39%

post-editor

Metric	09d9ca9	trunk	% Change
serverResponse	393.19 ms +7.39% -5.05%	416.79 ms +4.71% -6.61%	-5.66%
firstPaint	202.6 ms +18.27% -18.27%	194.12 ms +23% -6.4%	4.37%
domContentLoaded	1089.38 ms +1.36% -2.14%	1077.11 ms +2.47% -0.56%	1.14%
loaded	1090.59 ms +1.35% -2.15%	1078.42 ms +2.46% -0.57%	1.13%
firstContentfulPaint	457.44 ms +7.89% -3.93%	452.27 ms +5.03% -2.9%	1.14%
firstBlock	3143.81 ms +4.69% -1.63%	3128.65 ms +1.11% -0.68%	0.48%
type	18.12 ms +1.71% -7.23%	18.56 ms +3.5% -3.72%	-2.37%
typeWithoutInspector	17.19 ms +8.67% -2.09%	17.55 ms +3.87% -3.53%	-2.05%
typeWithTopToolbar	22.87 ms +3.19% -3.98%	23.42 ms +2.05% -6.92%	-2.35%
typeContainer	8.68 ms +3.69% -8.53%	8.73 ms +6.3% -11%	-0.57%
focus	67.86 ms +1.34% -6.97%	70.28 ms +3.69% -4.68%	-3.44%
firstFocus	198.73 ms +0% -0%	204.29 ms +0% -0%	-2.72%
selectAll	489.91 ms +5.48% -0.94%	487.22 ms +2.33% -2.61%	0.55%
listViewOpen	60.31 ms +4.08% -10.18%	56.44 ms +12.24% -3.63%	6.86%
inserterOpen	23.03 ms +16.76% -3.78%	23.06 ms +4.25% -1.52%	-0.13%
inserterHover	2.01 ms +14.43% -3.98%	2.3 ms +6.96% -9.13%	-12.61%
inserterSearch	8 ms +5.5% -3.37%	8.37 ms +11.95% -4.54%	-4.42%
loadPatterns	617.97 ms +4.39% -2.06%	654.94 ms +3.35% -3.68%	-5.64%
wpTotal	382.4 ms +7.55% -5.27%	405.45 ms +4.77% -6.82%	-5.69%
wpMemoryUsage	13.14 MB +0% -0%	13.11 MB +0% -0%	0.28%
wpDbQueries	54 +0% -1.85%	54 +0% -1.85%	0%

site-editor

Metric	09d9ca9	trunk	% Change
serverResponse	489.59 ms +5.09% -3.11%	466.84 ms +6.44% -3.21%	4.87%
firstPaint	250.85 ms +16.1% -4.62%	236.35 ms +14.45% -11.05%	6.13%
domContentLoaded	1145.92 ms +1.22% -1.51%	1128.63 ms +1.27% -0.67%	1.53%
loaded	1147.2 ms +1.19% -1.52%	1129.83 ms +1.27% -0.69%	1.54%
firstContentfulPaint	456.55 ms +3.04% -1.84%	445.96 ms +2.37% -3.08%	2.37%
firstBlock	4165.13 ms +0.66% -0.7%	4097.26 ms +0.84% -0.62%	1.66%
type	18.67 ms +3.16% -5.52%	18.55 ms +4.42% -4.8%	0.65%
navigate	119.07 ms +8.08% -8.54%	110.4 ms +7.47% -3.53%	7.85%
loadPatterns	1356.11 ms +12.21% -5.46%	1279.05 ms +10.31% -4.37%	6.02%
loadPages	1061.01 ms +1.08% -1.4%	1061.05 ms +2.87% -1.04%	0%
wpTotal	479.7 ms +5.22% -3.05%	457.32 ms +6.44% -3.39%	4.89%
wpMemoryUsage	12.11 MB +0% -0%	12.09 MB +0% -0%	0.13%
wpDbQueries	43 +2.33% -0%	43 +2.33% -0%	0%

_{059728e Run}

🏁 Flaky tests

Show the failures

Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

A button allows the block to switch from legacy mode to editable mode in /test/e2e/specs/editor/blocks/comments.spec.js, passed after 1 failed attempt.

Error: apiRequestContext.fetch: socket hang up
Call log:
  - → GET http://localhost:8889/wp-json/wp/v2/comments?per_page=100&status=all&type=comment
    - user-agent: Playwright/1.63.0 (x64; ubuntu 24.04) node/24.18 CI/1
    - accept: */*
    - accept-encoding: gzip,deflate,br
    - X-WP-Nonce: 338096c077
    - cookie: wordpress_test_cookie=WP%20Cookie%20check; wordpress_logged_in_23778236db82f19306f247e20a353a99=admin%7C1790362231%7CcrfQGyQS1EreFN67HNZaK7ZOS3vIjxNzmndiRq8OtUo%7C08a9c86deb32382842353973091a82aeb90267ec4439c3bef931dcc51956027b; wp-settings-time-1=1790189475

    at RequestUtils.rest (/home/runner/work/gutenberg/gutenberg/packages/e2e-test-utils-playwright/src/request-utils/rest.ts:112:39)
    at RequestUtils.deleteAllComments (/home/runner/work/gutenberg/gutenberg/packages/e2e-test-utils-playwright/src/request-utils/comments.ts:54:30)
    at /home/runner/work/gutenberg/gutenberg/test/e2e/specs/editor/blocks/comments.spec.js:35:22

does not show the notice when the autosave content is already in the shared document in /test/e2e/specs/editor/collaboration/collaboration-autosave-notice-suppression.spec.ts, passed after 1 failed attempt.

Error: apiRequestContext.fetch: socket hang up
Call log:
  - → GET http://localhost:8889/wp-json/wp/v2/posts/34/autosaves?context=edit
    - user-agent: Playwright/1.63.0 (x64; ubuntu 24.04) node/24.18 CI/1
    - accept: */*
    - accept-encoding: gzip,deflate,br
    - X-WP-Nonce: 338096c077
    - cookie: wordpress_test_cookie=WP%20Cookie%20check; wordpress_logged_in_23778236db82f19306f247e20a353a99=admin%7C1790362231%7CcrfQGyQS1EreFN67HNZaK7ZOS3vIjxNzmndiRq8OtUo%7C08a9c86deb32382842353973091a82aeb90267ec4439c3bef931dcc51956027b; wp-settings-time-1=1790189517

    at RequestUtils.rest (/home/runner/work/gutenberg/gutenberg/packages/e2e-test-utils-playwright/src/request-utils/rest.ts:112:39)
    at /home/runner/work/gutenberg/gutenberg/test/e2e/specs/editor/collaboration/collaboration-autosave-notice-suppression.spec.ts:102:40

_{059728e Run}

[aduth]

Minor: This pull request removed the last bit of JSX syntax from this file and we could have renamed it to .js. As part of #80123, I considered future expansion to the rule to help detect this. Though in this case, it likely would not have surfaced as a distinct error since the rule was already being suppressed in suppressions.json.

[Mamaduka]

Thanks, @aduth!

Here's the follow-up PR - #83758.