feat(mf): support layered container exposes by ScriptedAlchemy · Pull Request #14912 · web-infra-dev/rspack

ScriptedAlchemy · 2026-07-22T22:37:48Z

Motivation

Expose the same source in different layers without requiring users to assign each variant through module.rules.

Changes

Add exposes.*.layer to enhanced containers and carry the configured layer through bindings, dependencies, and module builds:

exposes: {
  './server': { import: './src/component.js', layer: 'server' },
  './client': { import: './src/component.js', layer: 'client' },
}

Omitting layer leaves it unspecified. Legacy expose configurations retain their behavior. The final stack adds nonempty-name validation in #14913.

Direct expose tests cover server/client and omitted layers in both runtime modes. Type tests check the enhanced API boundary; serial fixtures cover layered remote loading.

Stack 3/4: #12977 → #14911 → #14912 → #14913.

Enhanced Webpack parity and layer-aware federation RFC.

codspeed · 2026-07-22T22:57:55Z

Merging this PR will not alter performance

✅ 57 untouched benchmarks
⏩ 47 skipped benchmarks¹

_{Comparing codex/mf-layered-container-exposes (728b7a9) with codex/mf-share-scope-runtime (5b1e45a)}

47 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

github-actions · 2026-07-22T23:12:05Z

📦 Binary Size-limit

Comparing 728b7a9 to fix: allocative crate package names (#16212) by AsyncIter

Note

This PR is stacked on codex/mf-share-scope-runtime. Sizes are compared against main, so the diff below covers the whole stack, not this PR alone.

❌ Size increased by 56.13KB from 67.74MB to 67.80MB (⬆️0.08%)

github-actions · 2026-07-22T23:13:30Z

Rsdoctor Bundle Diff Analysis

Found 5 projects in monorepo, 0 projects with changes.

📊 Quick Summary

Project	Total Size	Gzip Size
popular-libs	1.7 MB	536.3 KB
react-10k	5.4 MB	1.3 MB
react-1k	827.7 KB	225.2 KB
react-5k	2.6 MB	670.6 KB
ui-components	4.7 MB	1.4 MB

Generated by Rsdoctor GitHub Action

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…to codex/work-pr14912

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# Conflicts: # crates/rspack_plugin_mf/src/sharing/shared_used_exports_optimizer_plugin.rs

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…tainer-exposes

…tainer-exposes # Conflicts: # crates/rspack_plugin_mf/src/container/container_entry_module.rs

…tainer-exposes

Replace the parallel expose_layers vector, its constructors, and the ExposeIdentifierPayload mirror with an optional layer field on ExposeOptions, serialized only when present so unlayered container identifiers keep webpack's [[key, options]] payload. Follows ProvideOptions::layer.

…ures Validate exposes.layer where the option is introduced, drop the empty-layer expose from the option fixture and docs, and remove experiments.outputModule from the ported layers-full fixtures, which already set output.module.

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Apply the upstream optional-name contract to enhanced base options and cover consumer-only constructors.

This was referenced Jul 22, 2026

feat(mf): initialize ordered share scopes at runtime #14911

Open

feat(mf): emit layered federation manifest metadata #14913

Open

ScriptedAlchemy force-pushed the codex/mf-layered-container-exposes branch from 9d29773 to 5ffeb7a Compare July 22, 2026 23:05

ScriptedAlchemy force-pushed the codex/mf-layered-container-exposes branch from 5ffeb7a to 684b404 Compare July 23, 2026 00:49

feat(mf): support layered container exposes

c4d3c04

ScriptedAlchemy force-pushed the codex/mf-layered-container-exposes branch from 684b404 to c4d3c04 Compare July 23, 2026 01:16

ScriptedAlchemy marked this pull request as ready for review July 23, 2026 01:52

ScriptedAlchemy requested review from ahabhgk and hardfist as code owners July 23, 2026 01:52

chatgpt-codex-connector Bot reviewed Jul 23, 2026

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Comment thread packages/rspack/src/container/ContainerPlugin.ts Outdated

Merge remote-tracking branch 'origin/codex/mf-share-scope-runtime' in…

b3a3fed

…to codex/work-pr14912

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Comment thread crates/rspack_plugin_mf/src/container/container_exposed_dependency.rs Outdated

ScriptedAlchemy added 3 commits July 27, 2026 22:12

Merge commit '2a348f967f' into codex/work-pr14912

c0f445d

Merge commit 'e0a975ff10' into codex/work-pr14912

f16f215

Merge commit '223f6e860f' into codex/work-pr14912

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Comment thread packages/rspack/src/container/ContainerPlugin.ts Outdated

Merge commit '3e4af0cb5f' into codex/work-pr14912

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Comment thread packages/rspack/src/container/ContainerPlugin.ts Outdated

ScriptedAlchemy added 4 commits July 27, 2026 22:47

perf(mf): use unstable sorts for deterministic strings

1c3eb05

perf(mf): patch shared exports without typed stats

bce2884

perf(mf): compact optional exposed layers

53b1f7e

Merge commit '9392c3bb75' into codex/work-pr14912

b21cf1d

# Conflicts: # crates/rspack_plugin_mf/src/sharing/shared_used_exports_optimizer_plugin.rs

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Comment thread packages/rspack/src/container/ModuleFederationPluginV1.ts Outdated

ScriptedAlchemy added 10 commits September 9, 2026 07:28

Merge branch 'codex/mf-share-scope-runtime' into codex/mf-layered-con…

a00b374

…tainer-exposes

Merge branch 'codex/mf-share-scope-runtime' into codex/mf-layered-con…

fca6e72

…tainer-exposes # Conflicts: # crates/rspack_plugin_mf/src/container/container_entry_module.rs

Merge branch 'codex/mf-share-scope-runtime' into codex/mf-layered-con…

1ae37ab

…tainer-exposes

Merge branch 'codex/mf-share-scope-runtime' into codex/mf-layered-con…

e3dab88

…tainer-exposes

Merge branch 'stack-refresh/14911' into stack-refresh/14912

b55df4a

Merge branch 'stack-refresh2/14911' into stack-refresh2/14912

4605029

Merge branch 'stack-refresh2/14911' into stack-refresh2/14912

2e2ec31

Merge branch 'stack-refresh2/14911' into stack-refresh2/14912

5acd724

Merge branch 'stack-refresh2/14911' into stack-refresh2/14912

fc9224a

Merge branch 'stack-refresh2/14911' into stack-refresh2/14912

a47cc84

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Comment thread packages/rspack/src/container/ContainerPlugin.ts Outdated

ScriptedAlchemy and others added 15 commits September 22, 2026 22:46

Merge branch 'stack-refresh2/14911' into stack-refresh2/14912

ef7c751

Merge ordered share scope runtime into layered container exposes

6fb8b6b

Merge corrected workspace lockfile into layered container exposes

b0bf215

fix(mf): preserve unnamed consumers after base refresh

3c0aed3

Apply the upstream optional-name contract to enhanced base options and cover consumer-only constructors.

fix(mf): enforce reusable expose map types and relocate Rust coverage

c9cb2be

Merge reviewed MF runtime fixes and format test dependency

f65fa5e

fix(mf): preserve Rust container options source compatibility

046f3b2

Merge Rust sharing API compatibility into layered containers

baf20fb

test(mf): retain enhanced expose serialization coverage

1dbc84d

Merge branch 'api-compat-runtime' into HEAD

acf8939

Merge branch 'api-compat-runtime' into HEAD

d0d70ae

Merge branch 'api-compat-runtime' into HEAD

27c7890

chore: update layered exposes stack base

1162106

chore: propagate federation lockfile fix

27998da

chore: propagate combined preview build

728b7a9

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