refactor: improve linear-weight-sum performance

[PupilTong]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: 8227b08

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

This PR includes changesets to release 9 packages

Name	Type
@lynx-js/web-style-transformer	Patch
@lynx-js/web-elements	Patch
@lynx-js/web-core	Patch
@lynx-js/web-mainthread-apis	Patch
@lynx-js/web-core-server	Patch
@lynx-js/web-worker-runtime	Patch
@lynx-js/web-constants	Patch
@lynx-js/web-worker-rpc	Patch
@lynx-js/web-elements-template	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

[Copilot]

Pull Request Overview

This PR refactors the handling of linear-weight-sum by removing the JS fallback for zero values and moving that logic into CSS, using a clamp-based calculation to default the sum to 1 when it's zero.

• Simplified transformLynxStyles.ts by always emitting the raw value for --lynx-linear-weight-sum
• Updated linear.css to use nested calc + clamp to avoid division by zero at runtime
• Bumped versions via a changeset

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
packages/web-platform/web-style-transformer/src/transformLynxStyles.ts	Remove JS check and override for 0 values on linear-weight-sum
packages/web-platform/web-elements/src/common-css/linear.css	Add nested calc + clamp to default zero sum to 1 in CSS
.changeset/hungry-hoops-sin.md	Version patch bump for the refactor

[Copilot]

Passing values like '0 !important' directly into the custom property will break CSS arithmetic (e.g., clamp and multiplication). Consider stripping out !important from the value and setting it via the style priority argument instead.

Suggested change

	childStyle.push(['--lynx-linear-weight-sum', value]);
	const important = value.includes('!important');
	const sanitizedValue = value.replace('!important', '').trim();
	childStyle.push(['--lynx-linear-weight-sum', sanitizedValue]);
	// Optionally handle `important` if needed in the future

[Copilot]

[nitpick] The nested calc + clamp expression to default zero sums to 1 is non-obvious. Add a brief comment explaining the multiplier and clamp hack to help future maintainers understand the intent.

Suggested change

	flex-shrink: 0;
	flex-shrink: 0;
	/* The following `calc` and `clamp` logic ensures that if
	`--lynx-linear-weight-sum` is zero, it defaults to 1. This prevents
	division by zero and ensures consistent behavior. */

[codspeed-hq]

CodSpeed Performance Report

Merging #1216 will not alter performance

_{Comparing PupilTong:p/hw/weight-use-rename (8227b08) with main (4097b3f)}

Summary

✅ 10 untouched benchmarks

[relativeci]

React Example

#2510 Bundle Size — 234.7KiB (0%).

8227b08(current) vs 4097b3f main#2501(baseline)

Bundle metrics  no changes

	Current #2510	Baseline #2501
Initial JS	0B	0B
Initial CSS	0B	0B
Cache Invalidation	0%	0%
Chunks	0	0
Assets	4	4
Modules	153	153
Duplicate Modules	61	61
Duplicate Code	45.85%	45.85%
Packages	2	2
Duplicate Packages	0	0

Bundle size by type  no changes

	Current #2510	Baseline #2501
IMG	145.76KiB	145.76KiB
Other	88.94KiB	88.94KiB

Bundle analysis report Branch PupilTong:p/hw/weight-use-rename Project dashboard

---

^{Generated by RelativeCI Documentation Report issue}

[relativeci]

Web Explorer

#2501 Bundle Size — 259.22KiB (~+0.01%).

8227b08(current) vs 4097b3f main#2492(baseline)

Bundle metrics   3 changes 1 regression

	Current #2501	Baseline #2492
Initial JS	140.64KiB	140.64KiB
Initial CSS	31.88KiB(+0.19%)	31.82KiB
Cache Invalidation	23.05%	0%
Chunks	4	4
Assets	4	4
Modules	207(-0.48%)	208
Duplicate Modules	16	16
Duplicate Code	3.61%	3.61%
Packages	4	4
Duplicate Packages	0	0

Bundle size by type   2 changes 1 regression 1 improvement

	Current #2501	Baseline #2492
JS	227.34KiB (-0.02%)	227.39KiB
CSS	31.88KiB (+0.19%)	31.82KiB

Bundle analysis report Branch PupilTong:p/hw/weight-use-rename Project dashboard

---

^{Generated by RelativeCI Documentation Report issue}