fix: type origin-trial meta directive

[harlan-zw]

🔗 Linked issue

None.

❓ Type of change

• 📖 Documentation
• 🐞 Bug fix
• 👌 Enhancement
• ✨ New feature
• 🧹 Chore
• ⚠️ Breaking change

📚 Description

The http-equiv type accepted custom strings, but editor autocomplete omitted origin-trial. Add it to the strict and generic meta value unions.

Summary by CodeRabbit

• New Features
  • Added support for the origin-trial value in HTTP-equivalent metadata definitions.
  • Improved compatibility with pages using origin trial browser features.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 5f76b7ec-0386-4bcc-a2f6-0872ce7a2593

📥 Commits

Reviewing files that changed from the base of the PR and between cc1e03b and c70077b.

📒 Files selected for processing (2)

• packages/unhead/src/types/schema/head.ts
• packages/unhead/src/types/schema/meta.ts

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📝 Walkthrough

Walkthrough

The change adds 'origin-trial' to the accepted http-equiv values in MetaGeneric and HttpEquivMeta.

Changes

Origin trial meta types

Layer / File(s)	Summary
Extend HTTP equivalent type contracts packages/unhead/src/types/schema/head.ts, packages/unhead/src/types/schema/meta.ts	Both exported type declarations now accept the 'origin-trial' literal for http-equiv.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the type fix for the origin-trial meta directive.
Description check	✅ Passed	The description includes the linked issue, change type, and a clear explanation of the autocomplete problem and solution.
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.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/origin-trial-meta-type

---

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[github-actions]

📦 Bundle Size

✅ No notable changes

All bundles (14)

Bundle	Gzipped	Brotli	Raw
Core
Client (Minimal)	5.4 kB	4.9 kB	13.6 kB	✅
Client (Full)	9.6 kB	8.8 kB	25.2 kB	✅
Client (Self-Contained)	5.7 kB	5.1 kB	14.3 kB	✅
Server (Minimal)	4.9 kB	4.4 kB	12.3 kB	✅
Server (Self-Contained)	5.2 kB	4.7 kB	13 kB	✅
Vue
Vue Client (Minimal)	5.9 kB	5.3 kB	14.6 kB	✅
Vue Client (Full)	10.7 kB	9.7 kB	28 kB	✅
Vue Server (Minimal)	5.4 kB	4.9 kB	13.4 kB	✅
React
React Client (Minimal)	5.8 kB	5.3 kB	14.7 kB	✅
React Client (Full)	10.8 kB	9.8 kB	28.4 kB	✅
React Server (Minimal)	5.2 kB	4.7 kB	13 kB	✅
Schema.org
Schema.org (Minimal)	11.7 kB	10.5 kB	34.2 kB	✅
Schema.org Imports	0.1 kB	0.1 kB	0.1 kB	✅
Schema.org Vue Meta	0.5 kB	0.4 kB	1 kB	✅

---

📦 Runtime Dependencies

✅ No runtime dependency changes

All packages (10)

Package	External deps	Install size	Largest dependency	Skipped optional
@unhead/angular	10	773.6 kB	@jridgewell/trace-mapping 146.7 kB	0
@unhead/bundler	10	786.9 kB	@jridgewell/trace-mapping 146.7 kB	0
@unhead/cli	18	4.4 MB	@oxc-parser/binding-linux-arm64-gnu 2 MB	19
@unhead/eslint-plugin	9	683.2 kB	@jridgewell/trace-mapping 146.7 kB	0
@unhead/react	11	810.7 kB	@jridgewell/trace-mapping 146.7 kB	0
@unhead/schema-org	9	683.2 kB	@jridgewell/trace-mapping 146.7 kB	0
@unhead/solid-js	11	810.7 kB	@jridgewell/trace-mapping 146.7 kB	0
@unhead/svelte	11	810.7 kB	@jridgewell/trace-mapping 146.7 kB	0
@unhead/vue	11	810.7 kB	@jridgewell/trace-mapping 146.7 kB	0
unhead	9	683.2 kB	@jridgewell/trace-mapping 146.7 kB	0

Skipped optional dependencies (19)

• @unhead/cli: oxc-parser -> @oxc-parser/binding-android-arm-eabi, oxc-parser -> @oxc-parser/binding-android-arm64, oxc-parser -> @oxc-parser/binding-darwin-arm64, oxc-parser -> @oxc-parser/binding-darwin-x64, oxc-parser -> @oxc-parser/binding-freebsd-x64, oxc-parser -> @oxc-parser/binding-linux-arm-gnueabihf, oxc-parser -> @oxc-parser/binding-linux-arm-musleabihf, oxc-parser -> @oxc-parser/binding-linux-arm64-musl, oxc-parser -> @oxc-parser/binding-linux-ppc64-gnu, oxc-parser -> @oxc-parser/binding-linux-riscv64-gnu, oxc-parser -> @oxc-parser/binding-linux-riscv64-musl, oxc-parser -> @oxc-parser/binding-linux-s390x-gnu, oxc-parser -> @oxc-parser/binding-linux-x64-gnu, oxc-parser -> @oxc-parser/binding-linux-x64-musl, oxc-parser -> @oxc-parser/binding-openharmony-arm64, oxc-parser -> @oxc-parser/binding-wasm32-wasi, oxc-parser -> @oxc-parser/binding-win32-arm64-msvc, oxc-parser -> @oxc-parser/binding-win32-ia32-msvc, oxc-parser -> @oxc-parser/binding-win32-x64-msvc

_{Production dependencies only. Peer dependencies and Unhead workspace packages are excluded. Skipped optional dependencies are unavailable on the CI platform.}

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⚡ Performance (directional)

🟢 1 faster

Benchmark	base → PR	Δ
Bundler: ssrStaticReplace skip unrelated code	0.002 ms → 0.002 ms	🟢 -5.2%

All benchmarks (25)

Benchmark	PR	Δ	RME
SSR render (CPU)	0.361 ms	~ noise	±9.6%
SSR render (wall)	0.263 ms	~ noise	±4.9%
SSR allocated / render	242.8 KiB	~ noise	±5.8%
Schema.org cached render (CPU)	0.355 ms	~ noise	±6.6%
Schema.org cached render (wall)	0.254 ms	~ noise	±2.8%
Schema.org cached allocated / render	139.1 KiB	~ noise	±0.8%
Streaming wrapStream drain (CPU)	0.239 ms	~ noise	±4.9%
Streaming wrapStream drain (wall)	0.153 ms	~ noise	±5.1%
Streaming allocated / drain	149.8 KiB	~ noise	±0.2%
Streaming suspense chunk (CPU)	0.013 ms	~ noise	±9.5%
Streaming allocated / suspense chunk	5.1 KiB	~ noise	±0.5%
CSR DOM mutations / nav	38	~ noise	—
CSR re-render (CPU)	0.859 ms	~ noise	±5.0%
CSR re-render (wall)	0.487 ms	~ noise	±2.2%
Bundler: transformInclude mixed ids	0.409 ms	~ noise	±1.7%
Bundler: useSeoMetaTransform static calls	3.585 ms	~ noise	±4.3%
Bundler: minifyTransform inline script/style	0.525 ms	~ noise	±3.7%
Bundler: treeshakeServerComposables many calls	2.605 ms	~ noise	±6.1%
Bundler: treeshakeServerComposables skip unrelated code	0.002 ms	~ noise	±1.0%
Bundler: ssrStaticReplace many head.ssr reads	1.658 ms	~ noise	±6.7%
Bundler: ssrStaticReplace skip unrelated code	0.002 ms	🟢 -5.2%	±0.5%
Bundler: createHeadTransform many createHead calls	0.599 ms	~ noise	±5.0%
Bundler: react streaming skip JSX without head calls	0.003 ms	~ noise	±1.4%
Bundler: react streaming transform JSX with head calls	1.604 ms	~ noise	±6.5%
Bundler: solid streaming skip JSX without head calls	0.003 ms	~ noise	±1.2%

_{Baseline: main @ cc1e03b · 2026-08-04 · gzipped is the headline size metric · perf is directional (shared-runner, gated)}