feat(core): support decorators version 2023-11

[chenjiahan]

Summary

This PR adds support for the 2023-11 decorators version in Rsbuild core, keeps Babel and SWC snapshots aligned with the new config, and updates the English and Chinese docs to document the option.

Related Links

• https://github.com/tc39/proposal-decorators
• https://babeljs.io/docs/babel-plugin-proposal-decorators
• feat(es/proposal): add decorators 2023-11 support swc-project/swc#11686

[gemini-code-assist]

Code Review

This pull request introduces support for the 2023-11 decorator version, aligning with the November 2023 Stage 3 proposal. The implementation includes updates to the SWC and Babel plugins, type definitions, and documentation in both English and Chinese. Additionally, the @swc/helpers dependency has been upgraded to version 0.5.20, and comprehensive E2E and unit tests have been added. Review feedback identified minor typos in the reference URLs within the documentation that should be corrected to avoid unnecessary redirects.

[cloudflare-workers-and-pages]

Deploying rsbuild with    Cloudflare Pages

Latest commit:	8d1ffbd
Status:	✅  Deploy successful!
Preview URL:	https://6d25c047.rsbuild-v2.pages.dev
Branch Preview URL:	https://codex-feat-decorators-2023-1.rsbuild-v2.pages.dev

View logs

[Copilot]

Pull request overview

Adds a new source.decorators.version: '2023-11' option to Rsbuild, updates SWC/Babel snapshots and E2E coverage, and documents the new option in both English and Chinese docs.

Changes:

• Extend Decorators.version type and document '2023-11' in EN/ZH docs.
• Update SWC decorator config wiring and add unit/E2E tests + snapshots for '2023-11'.
• Bump @swc/helpers and refresh pnpm-lock.yaml snapshots.

Reviewed changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
website/docs/zh/guide/basic/typescript.mdx	Mentions '2023-11' as an available decorators version.
website/docs/zh/config/source/decorators.mdx	Documents '2023-11' in the decorators config reference (ZH).
website/docs/en/guide/basic/typescript.mdx	Mentions '2023-11' as an available decorators version.
website/docs/en/config/source/decorators.mdx	Documents '2023-11' in the decorators config reference (EN).
pnpm-lock.yaml	Lockfile updates reflecting dependency graph changes (incl. @swc/helpers).
packages/plugin-babel/tests/index.test.ts	Adds a snapshot test ensuring Babel is configured for decorators version: '2023-11'.
packages/plugin-babel/tests/snapshots/index.test.ts.snap	Snapshot update for Babel decorators '2023-11'.
packages/core/tests/swc.test.ts	Adds a snapshot test for SWC config when using decorators '2023-11'.
packages/core/tests/snapshots/swc.test.ts.snap	Snapshot update for SWC decorators '2023-11'.
packages/core/src/types/config.ts	Extends Decorators.version union to include '2023-11'.
packages/core/src/plugins/swc.ts	Updates SWC decorator config application logic for '2023-11'.
packages/core/package.json	Bumps @swc/helpers to ^0.5.20.
e2e/cases/syntax-es/decorator-config/index.test.ts	Adds E2E cases for '2023-11' (with and without Babel plugin).

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

builtin:swc-loader/SWC does not currently implement a working transform for decoratorVersion: '2023-11' (it can crash when that code path is hit). Setting swcConfig.jsc.transform.decoratorVersion to the user-provided '2023-11' risks breaking builds at runtime.

Suggestion: avoid passing '2023-11' into SWC until it’s supported. Either (a) throw a clear error when source.decorators.version === '2023-11' and SWC is the active transformer, recommending using the Babel plugin for 2023-11, or (b) map '2023-11' to '2022-03' for SWC and warn that semantics may differ.