feat(rsbuild-plugin): apply the build engine for rslib by upupming · Pull Request #3696 · lynx-family/lynx-stack

upupming · 2026-08-31T03:40:53Z

rslib was left out of the engine entirely, so a library build read none of the
Lynx config and had to mirror the parts it needed by hand.

Apply the engine there too, and skip the plugins that shape or serve a bundle:
rslib assembles its own, and rstest has none.

changeset-bot · 2026-08-31T03:40:57Z

🦋 Changeset detected

Latest commit: a99556e

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

This PR includes changesets to release 6 packages

Name	Type
@lynx-js/react-rsbuild-plugin	Patch
@lynx-js/rsbuild-plugin	Patch
upgrade-rspeedy	Patch
@lynx-js/rspeedy	Patch
@lynx-js/react-alias-rsbuild-plugin	Patch
create-rspeedy	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

coderabbitai · 2026-08-31T03:40:59Z

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pkg-pr-new · 2026-08-31T03:50:06Z

background-only

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/background-only@a99556e

@lynx-js/use-sync-external-store

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/use-sync-external-store@a99556e

@lynx-js/rspeedy

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/rspeedy@a99556e

create-rspeedy

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/create-rspeedy@a99556e

@lynx-js/debug-metadata-rsbuild-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/debug-metadata-rsbuild-plugin@a99556e

@lynx-js/rsbuild-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/rsbuild-plugin@a99556e

@lynx-js/react-rsbuild-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/react-rsbuild-plugin@a99556e

@lynx-js/react-alias-rsbuild-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/react-alias-rsbuild-plugin@a99556e

@lynx-js/vanilla-rsbuild-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/vanilla-rsbuild-plugin@a99556e

upgrade-rspeedy

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/upgrade-rspeedy@a99556e

@lynx-js/websocket

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/websocket@a99556e

@lynx-js/css-serializer

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/css-serializer@a99556e

@lynx-js/debug-metadata

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/debug-metadata@a99556e

@lynx-js/web-core

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/web-core@a99556e

@lynx-js/web-elements

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/web-elements@a99556e

@lynx-js/web-rsbuild-server-middleware

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/web-rsbuild-server-middleware@a99556e

@lynx-js/web-worker-rpc

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/web-worker-rpc@a99556e

@lynx-js/cache-events-webpack-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/cache-events-webpack-plugin@a99556e

@lynx-js/chunk-loading-webpack-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/chunk-loading-webpack-plugin@a99556e

@lynx-js/css-extract-webpack-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/css-extract-webpack-plugin@a99556e

@lynx-js/react-refresh-webpack-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/react-refresh-webpack-plugin@a99556e

@lynx-js/react-webpack-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/react-webpack-plugin@a99556e

@lynx-js/runtime-wrapper-webpack-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/runtime-wrapper-webpack-plugin@a99556e

@lynx-js/template-webpack-plugin

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/template-webpack-plugin@a99556e

@lynx-js/webpack-dev-transport

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/webpack-dev-transport@a99556e

@lynx-js/webpack-runtime-globals

pnpm add https://pkg.pr.new/lynx-family/lynx-stack/@lynx-js/webpack-runtime-globals@a99556e

commit: a99556e

codecov · 2026-08-31T03:54:03Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

📢 Thoughts on this report? Let us know!

codspeed-hq · 2026-08-31T04:00:11Z

Merging this PR will degrade performance by 1.1%

⚠️

Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 3 improved benchmarks
❌ 1 regressed benchmark
✅ 264 untouched benchmarks
⏩ 26 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	`BASE`	`HEAD`	Efficiency
❌	WallTime	`basic-performance-div-1000`	5.5 ms	8.4 ms	-34.23%
⚡	WallTime	`basic-performance-text-200`	3.5 ms	2.8 ms	+26.41%
⚡	WallTime	`basic-performance-scroll-view-100`	2.1 ms	2 ms	+7.45%
⚡	WallTime	`basic-performance-image-100`	2 ms	1.8 ms	+7.09%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

_{Comparing feat/rslib-auto-lynx (a99556e) with fix/auto-lynx-per-environment (08fa6ae)}

26 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. ↩

relativeci · 2026-08-31T04:11:16Z

React MTF Example

#5008 Bundle Size — 210.55KiB (0%).

6717276(current) vs 08fa6ae fix/auto-lynx-per-environment#4994(baseline)

Bundle metrics no changes

	Current #5008	Baseline #4994
Initial JS	`0B`	`0B`
Initial CSS	`0B`	`0B`
Cache Invalidation	`0%`	`0%`
Chunks	`0`	`0`
Assets	`3`	`3`
Modules	`215`	`215`
Duplicate Modules	`82`	`82`
Duplicate Code	`42.99%`	`42.99%`
Packages	`2`	`2`
Duplicate Packages	`0`	`0`

Bundle size by type no changes

	Current #5008	Baseline #4994
IMG	`111.23KiB`	`111.23KiB`
Other	`99.32KiB`	`99.32KiB`

Bundle analysis report Branch feat/rslib-auto-lynx Project dashboard

^{Generated by RelativeCI Documentation Report issue}

relativeci · 2026-08-31T04:11:17Z

Web Explorer

#13480 Bundle Size — 1.29MiB (0%).

a99556e(current) vs 08fa6ae fix/auto-lynx-per-environment#13463(baseline)

Bundle metrics

1 change

	Current #13480	Baseline #13463
Initial JS	`45.99KiB`	`45.99KiB`
Initial CSS	`2.37KiB`	`2.37KiB`
Cache Invalidation	`0%`	`0%`
Chunks	`11`	`11`
Assets	`13`	`13`
Modules	`320`(`+0.31%`)	`319`
Duplicate Modules	`15`	`15`
Duplicate Code	`19.37%`	`19.37%`
Packages	`14`	`14`
Duplicate Packages	`0`	`0`

Bundle size by type no changes

	Current #13480	Baseline #13463
JS	`756.75KiB`	`756.75KiB`
Other	`564.93KiB`	`564.93KiB`
CSS	`2.37KiB`	`2.37KiB`

Bundle analysis report Branch feat/rslib-auto-lynx Project dashboard

^{Generated by RelativeCI Documentation Report issue}

relativeci · 2026-08-31T04:11:18Z

React Example

#11897 Bundle Size — 239.07KiB (0%).

a99556e(current) vs 08fa6ae fix/auto-lynx-per-environment#11877(baseline)

Bundle metrics no changes

	Current #11897	Baseline #11877
Initial JS	`0B`	`0B`
Initial CSS	`0B`	`0B`
Cache Invalidation	`0%`	`0%`
Chunks	`0`	`0`
Assets	`4`	`4`
Modules	`220`	`220`
Duplicate Modules	`85`	`85`
Duplicate Code	`43.55%`	`43.55%`
Packages	`2`	`2`
Duplicate Packages	`0`	`0`

Bundle size by type no changes

	Current #11897	Baseline #11877
IMG	`145.76KiB`	`145.76KiB`
Other	`93.32KiB`	`93.32KiB`

Bundle analysis report Branch feat/rslib-auto-lynx Project dashboard

^{Generated by RelativeCI Documentation Report issue}

relativeci · 2026-08-31T04:11:20Z

React Example with Element Template

#4152 Bundle Size — 227.26KiB (0%).

a99556e(current) vs 08fa6ae fix/auto-lynx-per-environment#4134(baseline)

Bundle metrics no changes

	Current #4152	Baseline #4134
Initial JS	`0B`	`0B`
Initial CSS	`0B`	`0B`
Cache Invalidation	`0%`	`0%`
Chunks	`0`	`0`
Assets	`4`	`4`
Modules	`175`	`175`
Duplicate Modules	`62`	`62`
Duplicate Code	`36.46%`	`36.46%`
Packages	`2`	`2`
Duplicate Packages	`0`	`0`

Bundle size by type no changes

	Current #4152	Baseline #4134
IMG	`145.76KiB`	`145.76KiB`
Other	`81.5KiB`	`81.5KiB`

Bundle analysis report Branch feat/rslib-auto-lynx Project dashboard

^{Generated by RelativeCI Documentation Report issue}

relativeci · 2026-08-31T04:11:20Z

React External

#4991 Bundle Size — 583.94KiB (~+0.01%).

6717276(current) vs 08fa6ae fix/auto-lynx-per-environment#4977(baseline)

Bundle metrics

2 changes

	Current #4991	Baseline #4977
Initial JS	`0B`	`0B`
Initial CSS	`0B`	`0B`
Cache Invalidation	`2.56%`	`2.56%`
Chunks	`0`	`0`
Assets	`3`	`3`
Modules	`19`(`-5%`)	`20`
Duplicate Modules	`5`	`5`
Duplicate Code	`5.09%`(`-6.43%`)	`5.44%`
Packages	`0`	`0`
Duplicate Packages	`0`	`0`

Bundle size by type

1 change

1 regression

	Current #4991	Baseline #4977
Other	`583.94KiB` (`~+0.01%`)	`583.94KiB`

Bundle analysis report Branch feat/rslib-auto-lynx Project dashboard

^{Generated by RelativeCI Documentation Report issue}

upupming · 2026-08-31T09:18:18Z

+      // A test run emits nothing, so the engine has nothing to add. `rslib`
+      // does emit a bundle and reads the engine config, so the engine is
+      // applied for it; `pluginLynx` leaves out the plugins that would rewrite
+      // what an external bundle assembles itself.


Just remove verbose comments

`rslib` was left out of the engine entirely, so a library build read none of the Lynx config and had to mirror the parts it needed by hand. Apply the engine there too, and skip the plugins that shape or serve a bundle: `rslib` assembles its own, and `rstest` has none.

upupming requested review from colinaaa and luhc228 as code owners August 31, 2026 03:40

upupming force-pushed the feat/rslib-auto-lynx branch from d6a79d1 to 64bcbf6 Compare August 31, 2026 06:06

upupming force-pushed the feat/rslib-auto-lynx branch from 64bcbf6 to db3dce7 Compare August 31, 2026 07:48

upupming commented Aug 31, 2026

View reviewed changes

upupming force-pushed the feat/rslib-auto-lynx branch from db3dce7 to 491716d Compare August 31, 2026 10:46

upupming changed the title ~~feat(react-rsbuild-plugin): apply the build engine for the rslib caller~~ feat(rsbuild-plugin): apply the build engine for rslib Aug 31, 2026

upupming force-pushed the feat/rslib-auto-lynx branch from 491716d to 6154f41 Compare August 31, 2026 10:51

upupming force-pushed the feat/rslib-auto-lynx branch 2 times, most recently from 325941e to d7102ca Compare August 31, 2026 10:54

upupming force-pushed the feat/rslib-auto-lynx branch 2 times, most recently from 3bea4ff to 6be7738 Compare August 31, 2026 11:43

upupming force-pushed the feat/rslib-auto-lynx branch from 6be7738 to ebac7bd Compare August 31, 2026 14:10

upupming force-pushed the feat/rslib-auto-lynx branch from ebac7bd to 107779c Compare August 31, 2026 15:13

upupming force-pushed the feat/rslib-auto-lynx branch from 107779c to 9c8ff9a Compare August 31, 2026 15:20

upupming force-pushed the feat/rslib-auto-lynx branch 2 times, most recently from ebc517a to 97544b6 Compare September 1, 2026 03:26

upupming force-pushed the feat/rslib-auto-lynx branch 2 times, most recently from 6f622a1 to 1e5d5b1 Compare September 1, 2026 04:19

upupming force-pushed the feat/rslib-auto-lynx branch from 1e5d5b1 to 6723467 Compare September 1, 2026 06:32

upupming force-pushed the feat/rslib-auto-lynx branch 4 times, most recently from 125461e to 6717276 Compare September 1, 2026 13:50

upupming force-pushed the feat/rslib-auto-lynx branch from 6717276 to a99556e Compare September 1, 2026 14:42

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feat(rsbuild-plugin): apply the build engine for rslib - #3696

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