chore(deps): update vitest to v5

[ocavue]

Moves the test stack to Vitest 5: bench is now a test-context fixture, partial text assertions move to toMatchTextContent, text locators that target visible text sitting next to the hidden Markdown syntax kept in the DOM pass { exact: false } now that browser.locators.exact defaults to true, and the code block toolbar tests hover before clicking to satisfy the new actionability check.

vitest-browser-react@2.2.0 still declares a vitest: ^4 peer, so pnpm-workspace.yaml allows v5 for it until a wider range ships.

Heads-up: the hover-driven link-menu.test.tsx tests flake under v5 (3 of 10 local runs red, 0 of 10 on v4); CI retries absorb it, but it is worth a follow-up.

Blocking by vitest-community/vitest-browser-react#63

Summary by CodeRabbit

• Tests

  • Updated automated browser and component tests for more reliable text matching, hover interactions, link handling, previews, and tag-menu validation.
  • Improved benchmark coverage and comparison workflows for conversion, inline formatting, and reference-link scenarios.
  • Updated test infrastructure to support the latest testing environment and browser-test compatibility.

• Chores

  • Modernized internal test and benchmark configuration without changing the product’s user-facing functionality.

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Project	Deployment	Actions	Updated
meowdown	Ready	Preview	Sep 4, 2026 5:54am UTC

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Team

Run ID: 7cac0ffe-026c-491b-87ed-2b338d28806c

📥 Commits

Reviewing files that changed from the base of the PR and between b6eff9b and ae286fc.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (18)

• package.json
• packages/core/package.json
• packages/core/src/converters/check-roundtrip.bench.ts
• packages/core/src/converters/pm-to-md.bench.ts
• packages/core/src/extensions/autolink.test.ts
• packages/core/src/extensions/inline-mark-plugin.bench.ts
• packages/core/src/extensions/math.test.ts
• packages/core/src/extensions/reference-links-transaction.bench.ts
• packages/eslint-rules/package.json
• packages/markdown/package.json
• packages/react/package.json
• packages/react/src/components/code-block-view.test.tsx
• packages/react/src/components/editor.test.tsx
• packages/react/src/components/link-menu.test.tsx
• packages/react/src/components/markdown-view.test.tsx
• packages/react/src/components/tag-menu.test.tsx
• packages/vitest/package.json
• pnpm-workspace.yaml

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The monorepo upgrades Vitest to version 5. Benchmark files adopt the test-scoped benchmark API. Browser tests update text matching, link queries, hover interactions, and tag-label expectations.

Changes

Vitest 5 migration

Layer / File(s)	Summary
Vitest 5 dependency and workspace updates package.json, packages/*/package.json, pnpm-workspace.yaml	Development dependencies now use Vitest 5. The workspace allows vitest-browser-react to resolve against Vitest 5.
Benchmark API migration packages/core/src/converters/*.bench.ts, packages/core/src/extensions/*bench.ts	Benchmarks now use test-scoped bench fixtures and bench.compare. Reference-link scenarios use the typed benchmark registration API.
Test interaction and matcher updates packages/core/src/extensions/*.test.ts, packages/react/src/components/*test.tsx	Tests use toMatchTextContent, non-exact text queries, hover actions before clicks, and hash-prefixed tag labels.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: 🟡 Moderate · up to ae286

This updates the test platform to Vitest 5, but browser-test adapter compatibility remains unresolved and may cause intermittent test failures. The change should wait for the upstream compatibility blocker to be addressed or explicitly accepted.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 11 files. (7 skipped: 7…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely identifies the main change: updating Vitest dependencies and related test changes from v4 to v5.
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.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 11 files. (7 skipped: 7 unsupported.)

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/vitest-5

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commit: ae286fc

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	93.99%	5114 / 5441
🔵	Statements	91.74%	5779 / 6299
🔵	Functions	91.71%	1218 / 1328
🔵	Branches	87.62%	3740 / 4268

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
packages/core/src/converters/check-roundtrip.bench.ts	0%	0%	0%	0%	19-39
packages/core/src/converters/pm-to-md.bench.ts	0%	0%	0%	0%	15-31
packages/core/src/extensions/inline-mark-plugin.bench.ts	0%	100%	0%	0%	14-35
packages/core/src/extensions/reference-links-transaction.bench.ts	0%	0%	0%	0%	57-219

Generated in workflow #2119 for commit ae286fc by the Vitest Coverage Report Action