feat: upgrade to Rsbuild 2.0 and Rspack 2.0

[Patrick Lafrance (patricklafrance)]

• Updated package configurations and API to align with new Rsbuild 2.0 features, improvements, and deprecations.
• Added new options: polyfill, splitChunks, and setup to defineBuildConfig and defineDevConfig.
• Introduced migration documentation for Rsbuild v2.0 and Rslib v2.0, detailing package updates, Node.js requirements, and changed defaults.
• Refactored internal optimization configuration to use Rsbuild's new output structure.

[pkg-pr-new]

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@workleap/browserslist-config

pnpm add https://pkg.pr.new/@workleap/browserslist-config@430

@workleap/eslint-configs

pnpm add https://pkg.pr.new/@workleap/eslint-configs@430

@workleap/postcss-configs

pnpm add https://pkg.pr.new/@workleap/postcss-configs@430

@workleap/rsbuild-configs

pnpm add https://pkg.pr.new/@workleap/rsbuild-configs@430

@workleap/rslib-configs

pnpm add https://pkg.pr.new/@workleap/rslib-configs@430

@workleap/stylelint-configs

pnpm add https://pkg.pr.new/@workleap/stylelint-configs@430

@workleap/swc-configs

pnpm add https://pkg.pr.new/@workleap/swc-configs@430

@workleap/tsup-configs

pnpm add https://pkg.pr.new/@workleap/tsup-configs@430

@workleap/typescript-configs

pnpm add https://pkg.pr.new/@workleap/typescript-configs@430

@workleap/webpack-configs

pnpm add https://pkg.pr.new/@workleap/webpack-configs@430

commit: f55b851

[Copilot]

Pull request overview

This PR updates @workleap/rsbuild-configs to align with the Rsbuild 2.0 / Rspack 2.0 ecosystem, including new configuration options, revised optimization/minification handling, and accompanying migration documentation.

Changes:

• Added polyfill and splitChunks options to defineBuildConfig, and a setup option to defineDevConfig.
• Refactored optimization/minification configuration to match Rsbuild v2 output/minify and optimization shapes.
• Added migration docs for Rsbuild/Rslib v2 and updated CI cache keys and dependency lockfiles (including core-js).

Reviewed changes

Copilot reviewed 16 out of 17 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Locks updated dependency graph, including core-js wiring with Rsbuild/Rslib packages.
packages/rsbuild-configs/package.json	Adds core-js as a direct dependency to preserve polyfill support.
packages/rsbuild-configs/src/build.ts	Introduces polyfill/splitChunks options and refactors minify/optimization handling.
packages/rsbuild-configs/src/dev.ts	Adds setup passthrough to Rsbuild server.setup.
packages/rsbuild-configs/src/storybook.ts	Changes Storybook default lazyCompilation behavior.
packages/rsbuild-configs/tests/build.test.ts	Adds/updates tests for new build options and refactored helpers.
packages/rsbuild-configs/tests/dev.test.ts	Adds test coverage for the new setup dev option.
docs/rslib/migrate-to-v2.md	Adds Rslib v2 migration guidance for consumers.
docs/rsbuild/migrate-to-v2.md	Adds Rsbuild v2 migration guidance and describes new/changed defaults.
docs/rsbuild/configure-build.md	Documents new polyfill and splitChunks options.
docs/rsbuild/configure-dev.md	Documents new setup option.
docs/rsbuild/configure-storybook.md	Updates lazyCompilation default documentation to match code.
.github/workflows/pr-pkg.yml	Updates Turborepo cache key namespace (v11).
.github/workflows/claude.yml	Updates Turborepo cache key namespace (v11).
.github/workflows/changeset.yml	Updates Turborepo cache key namespace (v11).
.changeset/rsbuild-v2-options.md	Declares release note for new Rsbuild v2-aligned options and refactor.
.changeset/nice-sails-teach.md	Adds an additional changeset entry (currently informal/duplicative).

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (2)

packages/rsbuild-configs/src/storybook.ts:35

• defineStorybookConfig now defaults lazyCompilation to true, which is a behavior change for consumers. There’s no test asserting the default value (or the override behavior) in tests/storybook.test.ts, and this change isn’t mentioned in the changeset/migration notes; consider adding coverage and calling it out in release notes if intentional.

    const {
        plugins = [],
        lazyCompilation = true,
        sourceMap = {
            js: "cheap-module-source-map",
            css: true
        },

.changeset/nice-sails-teach.md:6

• This changeset summary reads informal/unprofessional ("my bad") and is also largely duplicative of rsbuild-v2-options.md. Consider deleting this changeset or rewriting it as a concise, user-facing release note without commentary about prior versioning mistakes.

(Should have been 4.0.0 my bad) - Update the package configurations and API to match the new Rsbuild 2.0 features / improvements / deprecation.

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