[stachbial]

Description

• The opacity of a group applies to the paths inside it. A semi-transparent group of several shapes stays a group after flattening, and its paths were drawn opaque. Same-color paths in such a group merge into one layer, so the group is drawn once at its opacity, as in the SVG.
• A non-numeric group opacity ("", inherit) counts as 1, none and transparent fills under opacity stay unpainted, and the opacity of the root <svg> applies too.

Test plan

• yarn test (625 tests), ts-check and lint clean. New: group opacity on several paths, nested group opacities, and the layers of SWM Duotone Command.

• The 12,068 SVGs in packages/react-native-nano-icons/test_icons: only the 12 SWM Duotone icons with a semi-transparent group of several shapes change. Built into fonts and rendered next to the original SVGs in Chrome, they match.

  

• iOS 27 simulator and Android API 36 emulator: SWM Duotone Command and Grid4 keep their light tone.

[github-actions]

Font benchmark: ✅ pass

base 9ceb62c → pr b002d89. 3 runs per set. Sizes are exact; times come from separate runners.

Details

Fonts

Raw is the .ttf on disk. Compressed is the same file after deflate at level 9, which is roughly what an APK or IPA carries.

Set	Raw	Compressed
MaterialIcons_baseline	307,528 → 307,528 (0.0%)	163,775 → 163,775 (0.0%)
MaterialIcons_outline	338,072 → 338,072 (0.0%)	182,651 → 182,651 (0.0%)
MaterialIcons_round	416,936 → 416,936 (0.0%)	216,846 → 216,846 (0.0%)
MaterialIcons_sharp	273,232 → 273,232 (0.0%)	150,630 → 150,630 (0.0%)
MaterialIcons_twotone	451,268 → 451,268 (0.0%)	236,463 → 236,463 (0.0%)
SWMIcons_outline	107,116 → 107,116 (0.0%)	28,632 → 28,632 (0.0%)
SWMIcons_duotone	115,620 → 115,860 (+0.2%)	34,126 → 34,184 (+0.2%)
SWMIcons_curved	102,524 → 102,524 (0.0%)	31,597 → 31,597 (0.0%)

Package

	base	pr	Δ
Tarball bytes	135,614	135,800	+0.1%
Files	290	290

Checks

Check	Limit	Result
Raw font growth	≤ 6% per set	✅
Tarball growth	≤ 6%	✅
Byte-identical rebuilds	required	✅ (base: yes)
OpenType Sanitizer	every font accepted	✅

Build time, median of 3 runs (not gated)

Set	base	pr	Δ
MaterialIcons_baseline	4,989 ms	2,964 ms	-40.6%
MaterialIcons_outline	5,365 ms	3,164 ms	-41.0%
MaterialIcons_round	6,576 ms	3,997 ms	-39.2%
MaterialIcons_sharp	4,506 ms	2,684 ms	-40.4%
MaterialIcons_twotone	6,725 ms	3,981 ms	-40.8%
SWMIcons_outline	2,558 ms	1,507 ms	-41.1%
SWMIcons_duotone	2,726 ms	1,598 ms	-41.4%
SWMIcons_curved	2,445 ms	1,393 ms	-43.0%