perf(core): create hot path for unmounting a tree of context

[JoviDeCroock]

currently when we unmount an entire tree we have to look at the subscribers of the Provider even though this is unmounted. This can also avoid a memory leak by freeing all subs automatically even though components could refer to them, all though this is very much an edge case.

Resolves #4347

[github-actions]

📊 Tachometer Benchmark Results

Summary

duration

• create10k: unsure 🔍 -0% - +1% (-2.56ms - +5.62ms)
  ^{preact-local vs preact-main}
• filter-list: unsure 🔍 -1% - +0% (-0.18ms - +0.07ms)
  ^{preact-local vs preact-main}
• hydrate1k: unsure 🔍 -1% - +2% (-0.73ms - +1.62ms)
  ^{preact-local vs preact-main}
• many-updates: unsure 🔍 -4% - +3% (-0.52ms - +0.41ms)
  ^{preact-local vs preact-main}
• replace1k: unsure 🔍 -1% - +2% (-1.07ms - +1.29ms)
  ^{preact-local vs preact-main}
• text-update: unsure 🔍 -5% - +4% (-0.10ms - +0.09ms)
  ^{preact-local vs preact-main}
• todo: unsure 🔍 -2% - +3% (-0.67ms - +0.92ms)
  ^{preact-local vs preact-main}
• update10th1k: faster ✔ 0% - 2% (0.02ms - 0.56ms)
  ^{preact-local vs preact-main}

usedJSHeapSize

• create10k: unsure 🔍 -0% - +0% (-0.01ms - +0.01ms)
  ^{preact-local vs preact-main}
• filter-list: unsure 🔍 -0% - +0% (-0.00ms - +0.00ms)
  ^{preact-local vs preact-main}
• hydrate1k: unsure 🔍 -3% - +3% (-0.40ms - +0.40ms)
  ^{preact-local vs preact-main}
• many-updates: unsure 🔍 -0% - +0% (-0.01ms - +0.00ms)
  ^{preact-local vs preact-main}
• replace1k: unsure 🔍 -1% - +0% (-0.03ms - +0.02ms)
  ^{preact-local vs preact-main}
• text-update: unsure 🔍 -0% - -0% (-0.00ms - -0.00ms)
  ^{preact-local vs preact-main}
• todo: unsure 🔍 -0% - +0% (-0.00ms - +0.00ms)
  ^{preact-local vs preact-main}
• update10th1k: unsure 🔍 -0% - -0% (-0.00ms - -0.00ms)
  ^{preact-local vs preact-main}

Results

create10k

• Browser: chrome-headless
• Sample size: 50
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	875.99ms - 882.45ms	-	unsure 🔍 -0% - +1% -2.56ms - +5.62ms
preact-main	875.18ms - 880.21ms	unsure 🔍 -1% - +0% -5.62ms - +2.56ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	27.30ms - 27.31ms	-	unsure 🔍 -0% - +0% -0.01ms - +0.01ms
preact-main	27.30ms - 27.31ms	unsure 🔍 -0% - +0% -0.01ms - +0.01ms	-

filter-list

• Browser: chrome-headless
• Sample size: 50
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	16.77ms - 16.93ms	-	unsure 🔍 -1% - +0% -0.18ms - +0.07ms
preact-main	16.81ms - 17.00ms	unsure 🔍 -0% - +1% -0.07ms - +0.18ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	1.76ms - 1.76ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.00ms
preact-main	1.76ms - 1.77ms	unsure 🔍 -0% - +0% -0.00ms - +0.00ms	-

hydrate1k

• Browser: chrome-headless
• Sample size: 50
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	76.73ms - 78.73ms	-	unsure 🔍 -1% - +2% -0.73ms - +1.62ms
preact-main	76.66ms - 77.90ms	unsure 🔍 -2% - +1% -1.62ms - +0.73ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	14.37ms - 14.94ms	-	unsure 🔍 -3% - +3% -0.40ms - +0.40ms
preact-main	14.38ms - 14.94ms	unsure 🔍 -3% - +3% -0.40ms - +0.40ms	-

many-updates

• Browser: chrome-headless
• Sample size: 50
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	13.92ms - 14.68ms	-	unsure 🔍 -4% - +3% -0.52ms - +0.41ms
preact-main	14.08ms - 14.62ms	unsure 🔍 -3% - +4% -0.41ms - +0.52ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	4.95ms - 4.95ms	-	unsure 🔍 -0% - +0% -0.01ms - +0.00ms
preact-main	4.95ms - 4.95ms	unsure 🔍 -0% - +0% -0.00ms - +0.01ms	-

replace1k

• Browser: chrome-headless
• Sample size: 100
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	73.43ms - 74.80ms	-	unsure 🔍 -1% - +2% -1.07ms - +1.29ms
preact-main	73.04ms - 74.97ms	unsure 🔍 -2% - +1% -1.29ms - +1.07ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	3.80ms - 3.83ms	-	unsure 🔍 -1% - +0% -0.03ms - +0.02ms
preact-main	3.80ms - 3.83ms	unsure 🔍 -0% - +1% -0.02ms - +0.03ms	-

run-warmup-0

Version	Avg time	vs preact-local	vs preact-main
preact-local	29.70ms - 30.57ms	-	unsure 🔍 -3% - +1% -0.94ms - +0.23ms
preact-main	30.10ms - 30.88ms	unsure 🔍 -1% - +3% -0.23ms - +0.94ms	-

run-warmup-1

Version	Avg time	vs preact-local	vs preact-main
preact-local	35.82ms - 37.86ms	-	unsure 🔍 -5% - +2% -2.02ms - +0.91ms
preact-main	36.34ms - 38.44ms	unsure 🔍 -3% - +6% -0.91ms - +2.02ms	-

run-warmup-2

Version	Avg time	vs preact-local	vs preact-main
preact-local	27.50ms - 28.02ms	-	unsure 🔍 -1% - +2% -0.27ms - +0.43ms
preact-main	27.44ms - 27.92ms	unsure 🔍 -2% - +1% -0.43ms - +0.27ms	-

run-warmup-3

Version	Avg time	vs preact-local	vs preact-main
preact-local	25.55ms - 26.36ms	-	unsure 🔍 -1% - +3% -0.24ms - +0.85ms
preact-main	25.28ms - 26.01ms	unsure 🔍 -3% - +1% -0.85ms - +0.24ms	-

run-warmup-4

Version	Avg time	vs preact-local	vs preact-main
preact-local	27.56ms - 29.33ms	-	unsure 🔍 -2% - +7% -0.50ms - +1.92ms
preact-main	26.91ms - 28.56ms	unsure 🔍 -7% - +2% -1.92ms - +0.50ms	-

run-final

Version	Avg time	vs preact-local	vs preact-main
preact-local	24.31ms - 25.28ms	-	unsure 🔍 -3% - +3% -0.64ms - +0.82ms
preact-main	24.16ms - 25.25ms	unsure 🔍 -3% - +3% -0.82ms - +0.64ms	-

text-update

• Browser: chrome-headless
• Sample size: 80
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	2.02ms - 2.16ms	-	unsure 🔍 -5% - +4% -0.10ms - +0.09ms
preact-main	2.03ms - 2.16ms	unsure 🔍 -4% - +5% -0.09ms - +0.10ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	0.98ms - 0.98ms	-	unsure 🔍 -0% - -0% -0.00ms - -0.00ms
preact-main	0.98ms - 0.98ms	unsure 🔍 +0% - +0% +0.00ms - +0.00ms	-

todo

• Browser: chrome-headless
• Sample size: 50
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	28.55ms - 29.94ms	-	unsure 🔍 -2% - +3% -0.67ms - +0.92ms
preact-main	28.74ms - 29.50ms	unsure 🔍 -3% - +2% -0.92ms - +0.67ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	1.25ms - 1.25ms	-	unsure 🔍 -0% - +0% -0.00ms - +0.00ms
preact-main	1.25ms - 1.25ms	unsure 🔍 -0% - +0% -0.00ms - +0.00ms	-

update10th1k

• Browser: chrome-headless
• Sample size: 50
• Built by: Benchmarks #1514

• Commit: cbca0e6

duration

Version	Avg time	vs preact-local	vs preact-main
preact-local	29.06ms - 29.25ms	-	faster ✔ 0% - 2% 0.02ms - 0.56ms
preact-main	29.19ms - 29.69ms	slower ❌ 0% - 2% 0.02ms - 0.56ms	-

usedJSHeapSize

Version	Avg time	vs preact-local	vs preact-main
preact-local	3.74ms - 3.74ms	-	unsure 🔍 -0% - -0% -0.00ms - -0.00ms
preact-main	3.74ms - 3.74ms	unsure 🔍 +0% - +0% +0.00ms - +0.00ms	-

_{tachometer-reporter-action v2 for Benchmarks}

[github-actions]

Size Change: +61 B (+0.1%)

Total Size: 61.6 kB

Filename	Size	Change
dist/preact.js	4.66 kB	+11 B (+0.24%)
dist/preact.min.js	4.69 kB	+10 B (+0.21%)
dist/preact.min.module.js	4.68 kB	+9 B (+0.19%)
dist/preact.min.umd.js	4.72 kB	+11 B (+0.23%)
dist/preact.module.js	4.67 kB	+10 B (+0.21%)
dist/preact.umd.js	4.73 kB	+10 B (+0.21%)

ℹ️ View Unchanged

Filename	Size
compat/dist/compat.js	4.09 kB
compat/dist/compat.module.js	4.01 kB
compat/dist/compat.umd.js	4.14 kB
debug/dist/debug.js	3.71 kB
debug/dist/debug.module.js	3.71 kB
debug/dist/debug.umd.js	3.79 kB
devtools/dist/devtools.js	231 B
devtools/dist/devtools.module.js	240 B
devtools/dist/devtools.umd.js	314 B
hooks/dist/hooks.js	1.55 kB
hooks/dist/hooks.module.js	1.59 kB
hooks/dist/hooks.umd.js	1.63 kB
jsx-runtime/dist/jsxRuntime.js	976 B
jsx-runtime/dist/jsxRuntime.module.js	949 B
jsx-runtime/dist/jsxRuntime.umd.js	1.06 kB
test-utils/dist/testUtils.js	453 B
test-utils/dist/testUtils.module.js	454 B
test-utils/dist/testUtils.umd.js	536 B

_{compressed-size-action}