fix(editor): migrate autoformat-kit to PlateJS v53 inputRules API

[ryota-murakami]

Summary

• Fixes 17/19 CI jobs that broke after the supply-chain pnpm install pulled in @platejs/* v53.0.0 (commit 6623b40). Build/Test/TypeCheck/Vercel/all 12 E2E shards were failing because v53 removed the pre-built rule arrays (autoformatSmartQuotes, autoformatPunctuation, autoformatLegal, autoformatLegalHtml, autoformatArrow, autoformatMath) and deprecated AutoformatPlugin.
• Migrates src/components/editor/plugins/autoformat-kit.tsx to the v53 plugin-owned inputRules pattern using createSlatePlugin({ key: 'markdownShortcuts', inputRules: [...] }) plus the new Rules.markdown() factories from @platejs/basic-nodes, @platejs/code-block, and @platejs/list.
• Preserves the v52 codeBlock-disable behavior via the v53 enabled callback.

Notes

• v52 text substitution rules (smart quotes, punctuation, legal, arrow, math) are intentionally not migrated in this PR — they require createTextSubstitutionInputRule with custom patterns and are tracked separately as a follow-up. They are not blocking CI.
• No other @platejs/* import in src/ needed migration (verified by grep + typecheck). The blast radius was 1 file.
• Cannot use key: 'autoformat' for the new plugin because v53 throws AutoformatPlugin cannot be used with plugin-owned input rules when both coexist. Used markdownShortcuts instead.

Test plan

• pnpm typecheck — exit 0
• pnpm lint — exit 0
• pnpm vitest run — 91 files, 1295 tests passed
• pnpm build — 15 routes built
• CI green (Build / Test / TypeCheck / 12 E2E shards / Vercel)
• Manual smoke test: **bold**, # heading, - list, [] todo markdown shortcuts trigger correctly in the editor

Summary by CodeRabbit

• Refactor
  • Restructured markdown shortcut formatting to use an improved plugin architecture. All existing shortcuts (headings, blockquotes, code blocks, marks, lists, and task lists) remain available.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
gitbox	Ready	Preview, Comment	Apr 29, 2026 3:08am

[coderabbitai]

Warning

Rate limit exceeded

@ryota-murakami has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 21 minutes and 36 seconds before requesting another review.

To keep reviews running without waiting, you can enable usage-based add-on for your organization. This allows additional reviews beyond the hourly cap. Account admins can enable it under billing.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 40a39e3e-d059-422c-8580-1aa197d706ef

📥 Commits

Reviewing files that changed from the base of the PR and between 6623b40 and 7222c3c.

📒 Files selected for processing (2)

• src/components/editor/plugins/autoformat-kit.tsx
• src/components/editor/plugins/basic-blocks-kit.tsx

📝 Walkthrough

Walkthrough

The autoformat plugin configuration was refactored to use createSlatePlugin with rule helpers from @platejs/basic-nodes, @platejs/code-block, and @platejs/list, replacing the previous @platejs/autoformat manual configuration approach. The code-block disabling logic was centralized into a shared isNotInCodeBlock function.

Changes

Cohort / File(s)	Summary
Autoformat Plugin Refactoring src/components/editor/plugins/autoformat-kit.tsx	Replaced manual AutoformatPlugin.configure() with createSlatePlugin() using inputRules for headings, blockquotes, horizontal rules, code blocks, marks (bold/italic/underline/strikethrough/subscript/superscript/highlight), and lists. Centralized code-block disabling logic into isNotInCodeBlock function applied per rule.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Poem

📝 From manual marks to rules so neat,
A plugin refresh, refactored complete!
Code blocks now safer, logic condensed—
Less clutter, more clarity, perfectly tensed! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: migrating the autoformat-kit plugin from the deprecated v52 AutoformatPlugin to the v53 inputRules API, which is the core objective of this PR.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/platejs-v53-migration

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Review rate limit: 0/1 reviews remaining, refill in 21 minutes and 36 seconds.}

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 70.37%. Comparing base (ba9aec3) to head (7222c3c).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/components/editor/plugins/basic-blocks-kit.tsx	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #175      +/-   ##
==========================================
+ Coverage   70.16%   70.37%   +0.20%     
==========================================
  Files         161      161              
  Lines        4659     4641      -18     
  Branches     1228     1227       -1     
==========================================
- Hits         3269     3266       -3     
+ Misses       1371     1356      -15     
  Partials       19       19              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[github-actions]

🧪 E2E Coverage Report (Sharded: 12 parallel jobs)

Metric	Coverage
Lines	93.25%
Functions	21.87%
Branches	18.16%
Statements	31.46%

📊 Full report available in workflow artifacts

[ryota-murakami]

@coderabbitai full review

[coderabbitai]

✅ Actions performed

Full review triggered.