feat(rspack): support eager exposes

[2heal1]

Description

Add opt-in eager: true support for Rspack exposes without changing Rspack itself. Eager expose modules are included in the container entry chunk, avoiding a separate async chunk request while preserving the asynchronous container.get() contract and deferring module evaluation until the exposed factory is called.

The enhanced Rspack ModuleFederationPlugin applies the behavior automatically. ExposeEagerPlugin is also exported from @module-federation/rspack/plugin for use alongside Rspack's built-in module federation plugin. Integration tests cover both forms with a container-only entry: {} configuration and verify eager versus lazy output assets.

Validation run:

• pnpm exec turbo run build --filter=@module-federation/rspack
• pnpm exec turbo run lint --filter=@module-federation/rspack --force
• pnpm exec turbo run test --filter=@module-federation/rspack --force
• pnpm exec prettier --check packages/rspack/src/ExposeEagerPlugin.ts packages/rspack/src/ModuleFederationPlugin.ts packages/rspack/__tests__/ExposeEagerPlugin.spec.ts packages/rspack/README.md .changeset/eager-exposes-rspack.md

The full-repository pnpm exec prettier --check . remains blocked by 682 pre-existing generated files, primarily under apps/website-new/doc_build; none are part of this branch.

Related Issue

No related issue.

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have added tests to cover my changes.
• All new and existing tests passed.
• I have updated the documentation.

[changeset-bot]

🦋 Changeset detected

Latest commit: c754723

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

This PR includes changesets to release 48 packages

Name	Type
@module-federation/rspack	Patch
@module-federation/enhanced	Patch
@module-federation/modern-js-v3	Patch
@module-federation/modern-js	Patch
@module-federation/nextjs-mf	Patch
@module-federation/node	Patch
@module-federation/rsbuild-plugin	Patch
@module-federation/rspress-plugin	Patch
@module-federation/rstest	Patch
@module-federation/storybook-addon	Patch
shared-tree-shaking-no-server-host	Patch
shared-tree-shaking-no-server-provider	Patch
shared-tree-shaking-with-server-host	Patch
shared-tree-shaking-with-server-provider	Patch
node-dynamic-remote-new-version	Patch
node-dynamic-remote	Patch
@module-federation/playground	Patch
remote5	Patch
remote6	Patch
website-new	Patch
@module-federation/devtools	Patch
@module-federation/cli	Patch
create-module-federation	Patch
@module-federation/dts-plugin	Patch
@module-federation/error-codes	Patch
@module-federation/managers	Patch
@module-federation/manifest	Patch
@module-federation/metro	Patch
@module-federation/metro-plugin-rnc-cli	Patch
@module-federation/metro-plugin-rnef	Patch
@module-federation/metro-plugin-rock	Patch
@module-federation/retry-plugin	Patch
@module-federation/runtime-core	Patch
@module-federation/runtime-tools	Patch
@module-federation/runtime	Patch
@module-federation/sdk	Patch
@module-federation/third-party-dts-extractor	Patch
@module-federation/treeshake-frontend	Patch
@module-federation/treeshake-server	Patch
@module-federation/webpack-bundler-runtime	Patch
@module-federation/bridge-react-webpack-plugin	Patch
@module-federation/bridge-react	Patch
@module-federation/bridge-shared	Patch
@module-federation/bridge-vue3	Patch
@module-federation/inject-external-runtime-core-plugin	Patch
@module-federation/esbuild	Patch
@module-federation/observability-plugin	Patch
@module-federation/utilities	Patch

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

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-02T08:16:54.413465Z	c754723	PR opened

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review" or "@codex security review".

Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.

[pkg-pr-new]

Open in StackBlitz

@module-federation/devtools

pnpm add https://pkg.pr.new/@module-federation/devtools@c754723

@module-federation/cli

pnpm add https://pkg.pr.new/@module-federation/cli@c754723

create-module-federation

pnpm add https://pkg.pr.new/create-module-federation@c754723

@module-federation/dts-plugin

pnpm add https://pkg.pr.new/@module-federation/dts-plugin@c754723

@module-federation/enhanced

pnpm add https://pkg.pr.new/@module-federation/enhanced@c754723

@module-federation/error-codes

pnpm add https://pkg.pr.new/@module-federation/error-codes@c754723

@module-federation/esbuild

pnpm add https://pkg.pr.new/@module-federation/esbuild@c754723

@module-federation/managers

pnpm add https://pkg.pr.new/@module-federation/managers@c754723

@module-federation/manifest

pnpm add https://pkg.pr.new/@module-federation/manifest@c754723

@module-federation/metro

pnpm add https://pkg.pr.new/@module-federation/metro@c754723

@module-federation/metro-plugin-rnc-cli

pnpm add https://pkg.pr.new/@module-federation/metro-plugin-rnc-cli@c754723

@module-federation/metro-plugin-rnef

pnpm add https://pkg.pr.new/@module-federation/metro-plugin-rnef@c754723

@module-federation/metro-plugin-rock

pnpm add https://pkg.pr.new/@module-federation/metro-plugin-rock@c754723

@module-federation/modern-js

pnpm add https://pkg.pr.new/@module-federation/modern-js@c754723

@module-federation/modern-js-v3

pnpm add https://pkg.pr.new/@module-federation/modern-js-v3@c754723

@module-federation/native-federation-tests

pnpm add https://pkg.pr.new/@module-federation/native-federation-tests@c754723

@module-federation/native-federation-typescript

pnpm add https://pkg.pr.new/@module-federation/native-federation-typescript@c754723

@module-federation/nextjs-mf

pnpm add https://pkg.pr.new/@module-federation/nextjs-mf@c754723

@module-federation/node

pnpm add https://pkg.pr.new/@module-federation/node@c754723

@module-federation/observability-plugin

pnpm add https://pkg.pr.new/@module-federation/observability-plugin@c754723

@module-federation/playground

pnpm add https://pkg.pr.new/@module-federation/playground@c754723

@module-federation/retry-plugin

pnpm add https://pkg.pr.new/@module-federation/retry-plugin@c754723

@module-federation/rsbuild-plugin

pnpm add https://pkg.pr.new/@module-federation/rsbuild-plugin@c754723

@module-federation/rspack

pnpm add https://pkg.pr.new/@module-federation/rspack@c754723

@module-federation/rspress-plugin

pnpm add https://pkg.pr.new/@module-federation/rspress-plugin@c754723

@module-federation/rstest

pnpm add https://pkg.pr.new/@module-federation/rstest@c754723

@module-federation/runtime

pnpm add https://pkg.pr.new/@module-federation/runtime@c754723

@module-federation/runtime-core

pnpm add https://pkg.pr.new/@module-federation/runtime-core@c754723

@module-federation/runtime-tools

pnpm add https://pkg.pr.new/@module-federation/runtime-tools@c754723

@module-federation/sdk

pnpm add https://pkg.pr.new/@module-federation/sdk@c754723

@module-federation/storybook-addon

pnpm add https://pkg.pr.new/@module-federation/storybook-addon@c754723

@module-federation/third-party-dts-extractor

pnpm add https://pkg.pr.new/@module-federation/third-party-dts-extractor@c754723

@module-federation/treeshake-frontend

pnpm add https://pkg.pr.new/@module-federation/treeshake-frontend@c754723

@module-federation/treeshake-server

pnpm add https://pkg.pr.new/@module-federation/treeshake-server@c754723

@module-federation/typescript

pnpm add https://pkg.pr.new/@module-federation/typescript@c754723

@module-federation/utilities

pnpm add https://pkg.pr.new/@module-federation/utilities@c754723

@module-federation/webpack-bundler-runtime

pnpm add https://pkg.pr.new/@module-federation/webpack-bundler-runtime@c754723

@module-federation/bridge-react

pnpm add https://pkg.pr.new/@module-federation/bridge-react@c754723

@module-federation/bridge-react-webpack-plugin

pnpm add https://pkg.pr.new/@module-federation/bridge-react-webpack-plugin@c754723

@module-federation/bridge-shared

pnpm add https://pkg.pr.new/@module-federation/bridge-shared@c754723

@module-federation/bridge-vue3

pnpm add https://pkg.pr.new/@module-federation/bridge-vue3@c754723

@module-federation/inject-external-runtime-core-plugin

pnpm add https://pkg.pr.new/@module-federation/inject-external-runtime-core-plugin@c754723

commit: c754723

[github-actions]

Bundle Size Report

8 package(s) changed, 35 unchanged.

Package dist + ESM entry

Package	Total dist (raw)	Delta	ESM gzip	Delta
@module-federation/playground	28.91 MB	-686 B (-0.0%)	45.7 kB	no change
@module-federation/rspack	66.0 kB	+9.6 kB (+17.0%)	161 B	no change

Bundle targets

Package	Web bundle (gzip)	Delta	Node bundle (gzip)	Delta
@module-federation/cli	2.3 kB	-2 B (-0.1%)	2.4 kB	-31 B (-1.3%)
@module-federation/core	1.0 kB	-5 B (-0.5%)	1.0 kB	-32 B (-2.9%)
@module-federation/devtools	30.3 kB	no change	30.3 kB	-23 B (-0.1%)
@module-federation/enhanced	2.7 kB	+4 B (+0.1%)	2.8 kB	-42 B (-1.5%)
@module-federation/metro-plugin-rnc-cli	416 B	-1 B (-0.2%)	435 B	-25 B (-5.4%)
@module-federation/node	9.1 kB	-1 B (-0.0%)	9.2 kB	-28 B (-0.3%)
@module-federation/rspack	3.1 kB	+415 B (+15.2%)	3.1 kB	+412 B (+15.0%)

Consumer scenarios

Scenario	Web output (gzip)	Delta	Node output (gzip)	Delta	Gap (node-web)	Delta
Enhanced remoteEntry	22.3 kB	-16 B (-0.1%)	23.8 kB	-17 B (-0.1%)	+1.6 kB	-1 B

Total dist (raw): 36.17 MB (+8.9 kB (+0.0%))
Total ESM gzip: 111.4 kB (no change)
Total web bundle (gzip): 253.5 kB (+410 B (+0.2%))
Total node bundle (gzip): 255.7 kB (+231 B (+0.1%))
Tracked ./bundler entry gzip: 563 B (no change)
Tracked ./bundler web bundle (gzip): 4.9 kB (no change)
Tracked ./bundler node bundle (gzip): 4.9 kB (no change)

Bundle sizes are generated with rslib (Rspack). Package-root metrics preserve the historical report. Tracked subpath exports such as ./bundler are measured separately so ENV_TARGET-driven tree-shaking is visible. Bare imports are externalized to keep package-level sizes consistent, and assets are emitted as resources.