Remove redundant portal children guard

[JoviDeCroock]

Portal vnodes always have a _children array after diffing or error recovery, so this removes the redundant guard before remounting children into a new container.

Co-authored with GPT-5.6-sol.

[github-actions]

📊 Tachometer Benchmark Results

Summary

⏳ Benchmarks are currently running. Results below are out of date.

duration

• create10k: unsure 🔍 -0% - +1% (-3.00ms - +5.25ms)
  ^{preact-local vs preact-main}
• filter-list: slower ❌ 0% - 1% (0.01ms - 0.25ms)
  ^{preact-local vs preact-main}
• hydrate1k: unsure 🔍 -1% - +1% (-0.35ms - +0.65ms)
  ^{preact-local vs preact-main}
• many-updates: unsure 🔍 -0% - +0% (-0.02ms - +0.04ms)
  ^{preact-local vs preact-main}
• replace1k: unsure 🔍 -1% - +3% (-0.49ms - +1.76ms)
  ^{preact-local vs preact-main}
• text-update: unsure 🔍 -2% - +5% (-0.04ms - +0.12ms)
  ^{preact-local vs preact-main}
• todo: unsure 🔍 -1% - +1% (-0.19ms - +0.28ms)
  ^{preact-local vs preact-main}
• update10th1k: unsure 🔍 -2% - +4% (-0.73ms - +1.22ms)
  ^{preact-local vs preact-main}

usedJSHeapSize

• create10k: unsure 🔍 -0% - +0% (-0.03ms - +0.01ms)
  ^{preact-local vs preact-main}
• filter-list: unsure 🔍 -0% - +0% (-0.00ms - +0.00ms)
  ^{preact-local vs preact-main}
• hydrate1k: unsure 🔍 -1% - +4% (-0.07ms - +0.21ms)
  ^{preact-local vs preact-main}
• many-updates: unsure 🔍 -0% - +0% (-0.00ms - +0.00ms)
  ^{preact-local vs preact-main}
• replace1k: unsure 🔍 -0% - +0% (-0.00ms - +0.01ms)
  ^{preact-local vs preact-main}
• text-update: unsure 🔍 -4% - +1% (-0.04ms - +0.01ms)
  ^{preact-local vs preact-main}
• todo: unsure 🔍 -0% - +0% (-0.00ms - +0.00ms)
  ^{preact-local vs preact-main}
• update10th1k: unsure 🔍 -0% - +0% (-0.01ms - +0.01ms)
  ^{preact-local vs preact-main}

Results

⏳ Benchmarks are currently running. Results below are out of date.

create10k

• Browser: chrome-headless
• Sample size: 50
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	823.24ms - 828.72ms	-	unsure 🔍 -0% - +1% -3.00ms - +5.25ms
preact-main	821.77ms - 827.94ms	unsure 🔍 -1% - +0% -5.25ms - +3.00ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	19.23ms - 19.26ms	-	unsure 🔍 -0% - +0% -0.03ms - +0.01ms
preact-main	19.25ms - 19.27ms	unsure 🔍 -0% - +0% -0.01ms - +0.03ms	-

filter-list

• Browser: chrome-headless
• Sample size: 50
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	16.57ms - 16.81ms	-	slower ❌ 0% - 1% 0.01ms - 0.25ms
preact-main	16.54ms - 16.59ms	faster ✔ 0% - 1% 0.01ms - 0.25ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	1.57ms - 1.57ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.00ms
preact-main	1.57ms - 1.57ms	unsure 🔍 -0% - +0% -0.00ms - +0.00ms	-

hydrate1k

• Browser: chrome-headless
• Sample size: 50
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	54.32ms - 55.05ms	-	unsure 🔍 -1% - +1% -0.35ms - +0.65ms
preact-main	54.19ms - 54.88ms	unsure 🔍 -1% - +1% -0.65ms - +0.35ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	5.00ms - 5.25ms	-	unsure 🔍 -1% - +4% -0.07ms - +0.21ms
preact-main	4.98ms - 5.12ms	unsure 🔍 -4% - +1% -0.21ms - +0.07ms	-

many-updates

• Browser: chrome-headless
• Sample size: 50
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	16.54ms - 16.58ms	-	unsure 🔍 -0% - +0% -0.02ms - +0.04ms
preact-main	16.52ms - 16.57ms	unsure 🔍 -0% - +0% -0.04ms - +0.02ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	3.75ms - 3.76ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.00ms
preact-main	3.75ms - 3.76ms	unsure 🔍 -0% - +0% -0.00ms - +0.00ms	-

replace1k

• Browser: chrome-headless
• Sample size: 100
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	55.11ms - 56.64ms	-	unsure 🔍 -1% - +3% -0.49ms - +1.76ms
preact-main	54.41ms - 56.07ms	unsure 🔍 -3% - +1% -1.76ms - +0.49ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	3.02ms - 3.03ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.01ms
preact-main	3.02ms - 3.03ms	unsure 🔍 -0% - +0% -0.01ms - +0.00ms	-

run-warmup-0

Version	Avg time	vs preact-local	vs preact-main
preact-local	27.86ms - 28.52ms	-	unsure 🔍 -2% - +2% -0.42ms - +0.56ms
preact-main	27.75ms - 28.49ms	unsure 🔍 -2% - +1% -0.56ms - +0.42ms	-

run-warmup-1

Version	Avg time	vs preact-local	vs preact-main
preact-local	32.48ms - 33.53ms	-	unsure 🔍 -4% - +2% -1.19ms - +0.60ms
preact-main	32.57ms - 34.03ms	unsure 🔍 -2% - +4% -0.60ms - +1.19ms	-

run-warmup-2

Version	Avg time	vs preact-local	vs preact-main
preact-local	28.45ms - 29.43ms	-	faster ✔ 0% - 5% 0.02ms - 1.51ms
preact-main	29.15ms - 30.27ms	slower ❌ 0% - 5% 0.02ms - 1.51ms	-

run-warmup-3

Version	Avg time	vs preact-local	vs preact-main
preact-local	25.27ms - 25.51ms	-	unsure 🔍 -1% - +0% -0.20ms - +0.13ms
preact-main	25.32ms - 25.53ms	unsure 🔍 -0% - +1% -0.13ms - +0.20ms	-

run-warmup-4

Version	Avg time	vs preact-local	vs preact-main
preact-local	23.59ms - 24.89ms	-	unsure 🔍 -3% - +5% -0.66ms - +1.30ms
preact-main	23.18ms - 24.66ms	unsure 🔍 -5% - +3% -1.30ms - +0.66ms	-

run-final

Version	Avg time	vs preact-local	vs preact-main
preact-local	20.32ms - 20.77ms	-	unsure 🔍 -1% - +2% -0.31ms - +0.44ms
preact-main	20.18ms - 20.77ms	unsure 🔍 -2% - +1% -0.44ms - +0.31ms	-

text-update

• Browser: chrome-headless
• Sample size: 230
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	2.12ms - 2.24ms	-	unsure 🔍 -2% - +5% -0.04ms - +0.12ms
preact-main	2.09ms - 2.20ms	unsure 🔍 -5% - +2% -0.12ms - +0.04ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	1.02ms - 1.06ms	-	unsure 🔍 -4% - +1% -0.04ms - +0.01ms
preact-main	1.04ms - 1.07ms	unsure 🔍 -1% - +4% -0.01ms - +0.04ms	-

todo

• Browser: chrome-headless
• Sample size: 50
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	29.90ms - 30.24ms	-	unsure 🔍 -1% - +1% -0.19ms - +0.28ms
preact-main	29.86ms - 30.19ms	unsure 🔍 -1% - +1% -0.28ms - +0.19ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	1.28ms - 1.28ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.00ms
preact-main	1.28ms - 1.28ms	unsure 🔍 -0% - +0% -0.00ms - +0.00ms	-

update10th1k

• Browser: chrome-headless
• Sample size: 50
• Built by: CI #5717

• Commit: d610cf6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	31.39ms - 32.76ms	-	unsure 🔍 -2% - +4% -0.73ms - +1.22ms
preact-main	31.13ms - 32.52ms	unsure 🔍 -4% - +2% -1.22ms - +0.73ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	2.98ms - 2.99ms	-	unsure 🔍 -0% - +0% -0.01ms - +0.01ms
preact-main	2.98ms - 2.99ms	unsure 🔍 -0% - +0% -0.01ms - +0.01ms	-

_{tachometer-reporter-action v2 for CI}

[github-actions]

Size Change: -4 B (-0.03%)

Total Size: 15.8 kB

📦 View Changed

Filename	Size	Change
dist/preact.mjs	5 kB	-4 B (-0.08%)

ℹ️ View Unchanged

Filename	Size
compat/dist/compat.mjs	3.71 kB
debug/dist/debug.mjs	3.89 kB
devtools/dist/devtools.mjs	274 B
hooks/dist/hooks.mjs	1.55 kB
jsx-runtime/dist/jsxRuntime.mjs	861 B
test-utils/dist/testUtils.mjs	473 B

_{compressed-size-action}

[coveralls]

coverage: 98.534%. remained the same — refactor/remove-portal-children-guard into main