Update swc_core to v38

[Luca Schneider (Mad-Kat)]

This PR updates swc_core and related dependencies so that yak-swc is compatible with next.js >=15.4.4.

I've updated the docs and merging this will create a PR for a new major version 7.0.

Please ensure that the new release is published in a timely manner after completing this PR, as the docs would be updated already

[changeset-bot]

🦋 Changeset detected

Latest commit: 0df99f8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
yak-swc	Major
next-yak	Major

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[codspeed-hq]

CodSpeed Performance Report

Merging #411 will not alter performance

_{Comparing update-swc_core (0df99f8) with main (5367c56)¹}

Summary

✅ 12 untouched

Footnotes

1. No successful run was found on main (0c9f995) during the generation of this report, so 5367c56 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[Copilot]

Pull Request Overview

This PR upgrades swc_core and related dependencies to v38 to enable compatibility with Next.js versions >= 15.4.4. This represents a major version bump (7.0) due to the significant dependency updates.

• Updates swc_core from v27 to v38 and related SWC dependencies
• Adds necessary SWC helper imports for the docs playground
• Updates documentation to reflect new version compatibility requirements

Reviewed Changes

Copilot reviewed 7 out of 10 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
packages/yak-swc/Cargo.toml	Updates SWC dependencies to v38+ with exact version pinning
pnpm-workspace.yaml	Adds @swc/helpers dependency to dev catalog
packages/docs/package.json	Adds @swc/helpers as dev dependency for docs
packages/docs/lib/transformation/useTranspile.tsx	Imports SWC helper functions for transpilation
packages/docs/playground-wasm/src/types.rs	Updates TypeScript definitions for new SWC version
packages/docs/content/docs/getting-started.mdx	Updates compatibility table and installation instructions
.changeset/easy-lies-feel.md	Documents major version change

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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