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[0.84] Use hermes 0.0.0-2604.21001-94aa5e1d#16035

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[0.84] Use hermes 0.0.0-2604.21001-94aa5e1d#16035
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@vmoroz vmoroz commented Apr 22, 2026 •
edited by microsoft-github-policy-service Bot
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@vmoroz vmoroz requested review from a team as code owners April 22, 2026 21:24
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Performance Test Results

Branch: PR/0.84-use-hermes-0.0.0-2604.21001-94aa5e1d
Commit: 85d1146a
Time: 2026-04-22T23:12:40.049Z
Tests: 161/161 passed

✅ Passed

161 scenario(s) across 28 suite(s) — no regressions

SectionList

Scenario Mean Median StdDev Renders vs Baseline
SectionList mount 4.80ms 5.00ms ±0.79ms 1 +0.0%
SectionList unmount 0.40ms 0.00ms ±0.52ms 0 +0.0%
SectionList rerender 11.00ms 11.00ms ±1.49ms 2 +4.8%
SectionList with-3-sections-15-items 5.60ms 5.00ms ±0.84ms 1 -9.1%
SectionList with-5-sections-50-items 6.40ms 6.00ms ±1.35ms 1 +0.0%
SectionList with-10-sections-200-items 5.00ms 5.00ms ±0.47ms 1 -9.1%
SectionList with-20-sections-200-items 5.50ms 5.00ms ±2.51ms 1 +0.0%
SectionList with-section-separator 1.90ms 2.00ms ±0.32ms 1 +0.0%
SectionList with-item-separator 2.10ms 2.00ms ±0.88ms 1 +0.0%
SectionList with-header-footer 1.70ms 2.00ms ±0.48ms 1 +0.0%
SectionList with-section-footer 1.90ms 2.00ms ±0.57ms 1 +0.0%
SectionList with-sticky-section-headers 1.90ms 2.00ms ±0.32ms 1 +0.0%
SectionList with-empty-list 0.50ms 0.50ms ±0.53ms 1 -50.0%
SectionList with-50-sections-1000-items 1.60ms 1.50ms ±0.70ms 1 -25.0%

FlatList

Scenario Mean Median StdDev Renders vs Baseline
FlatList mount 4.60ms 5.00ms ±0.84ms 1 +25.0%
FlatList unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
FlatList rerender 10.10ms 10.00ms ±1.20ms 2 +11.1%
FlatList with-10-items 4.90ms 5.00ms ±0.57ms 1 +25.0%
FlatList with-100-items 5.80ms 5.00ms ±1.55ms 1 +0.0%
FlatList with-500-items 4.50ms 4.50ms ±0.53ms 1 +12.5%
FlatList with-1000-items 4.80ms 4.50ms ±1.23ms 1 +12.5%
FlatList horizontal 4.20ms 4.50ms ±1.23ms 1 -10.0%
FlatList with-separator 2.00ms 2.00ms ±1.49ms 1 +0.0%
FlatList with-header-footer 1.60ms 2.00ms ±0.52ms 1 +0.0%
FlatList with-empty-list 0.40ms 0.00ms ±0.52ms 1 -100.0%
FlatList with-get-item-layout 1.50ms 1.50ms ±0.53ms 1 +50.0%
FlatList inverted 2.10ms 2.00ms ±1.79ms 1 +33.3%
FlatList with-num-columns 2.90ms 3.00ms ±0.32ms 1 +0.0%

TouchableOpacity

Scenario Mean Median StdDev Renders vs Baseline
TouchableOpacity mount 0.80ms 1.00ms ±0.42ms 1 +0.0%
TouchableOpacity unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
TouchableOpacity rerender 1.70ms 1.00ms ±2.26ms 2 +0.0%
TouchableOpacity custom-active-opacity 0.50ms 0.50ms ±0.53ms 1 -50.0%
TouchableOpacity disabled 0.50ms 0.50ms ±0.53ms 1 -50.0%
TouchableOpacity with-all-handlers 0.40ms 0.00ms ±0.52ms 1 -100.0%
TouchableOpacity with-hit-slop 0.70ms 1.00ms ±0.48ms 1 +0.0%
TouchableOpacity with-delay 0.60ms 1.00ms ±0.52ms 1 +0.0%
TouchableOpacity nested 1.10ms 1.00ms ±0.32ms 1 +0.0%
TouchableOpacity multiple-10 6.33ms 5.00ms ±2.44ms 1 -16.7%
TouchableOpacity multiple-50 27.27ms 26.00ms ±2.81ms 1 -10.3%
TouchableOpacity multiple-100 36.80ms 43.00ms ±11.70ms 1 -14.0%

ScrollView

Scenario Mean Median StdDev Renders vs Baseline
ScrollView mount 0.50ms 0.50ms ±0.53ms 1 +Infinity%
ScrollView unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
ScrollView rerender 0.70ms 1.00ms ±0.48ms 2 +0.0%
ScrollView children-20 3.73ms 3.00ms ±1.39ms 1 -25.0%
ScrollView children-100 16.47ms 16.00ms ±2.61ms 1 +0.0%
ScrollView horizontal 3.60ms 3.00ms ±0.97ms 1 -25.0%
ScrollView sticky-headers 2.70ms 3.00ms ±0.95ms 1 +0.0%
ScrollView scroll-indicators 0.80ms 1.00ms ±0.42ms 1 +0.0%
ScrollView nested 1.40ms 1.00ms ±0.70ms 1 +0.0%
ScrollView content-container-style 0.90ms 1.00ms ±0.32ms 1 +0.0%
ScrollView children-500 24.80ms 20.00ms ±16.98ms 1 +5.3%

TouchableHighlight

Scenario Mean Median StdDev Renders vs Baseline
TouchableHighlight mount 0.60ms 1.00ms ±0.52ms 1 +100.0%
TouchableHighlight unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
TouchableHighlight rerender 0.70ms 1.00ms ±0.48ms 2 +0.0%
TouchableHighlight custom-underlay-color 0.50ms 0.50ms ±0.53ms 1 +Infinity%
TouchableHighlight custom-active-opacity 0.30ms 0.00ms ±0.48ms 1 +0.0%
TouchableHighlight disabled 0.30ms 0.00ms ±0.48ms 1 +0.0%
TouchableHighlight with-all-handlers 0.40ms 0.00ms ±0.52ms 1 +0.0%
TouchableHighlight with-hit-slop 0.90ms 0.50ms ±1.52ms 1 +Infinity%
TouchableHighlight nested-touchables 0.70ms 1.00ms ±0.48ms 1 +0.0%
TouchableHighlight multiple-touchables-10 2.80ms 3.00ms ±0.63ms 1 +0.0%
TouchableHighlight multiple-touchables-50 14.30ms 14.00ms ±1.34ms 1 +12.0%
TouchableHighlight multiple-touchables-100 25.30ms 25.50ms ±3.13ms 1 +13.3%

Pressable

Scenario Mean Median StdDev Renders vs Baseline
Pressable mount 0.40ms 0.00ms ±0.52ms 1 +0.0%
Pressable unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
Pressable rerender 0.60ms 1.00ms ±0.52ms 2 +100.0%
Pressable with-all-handlers 0.30ms 0.00ms ±0.48ms 1 +0.0%
Pressable with-style-function 0.60ms 0.00ms ±1.26ms 1 +0.0%
Pressable disabled 0.40ms 0.00ms ±0.52ms 1 +0.0%
Pressable with-hit-slop 0.30ms 0.00ms ±0.48ms 1 +0.0%
Pressable nested 0.70ms 1.00ms ±0.48ms 1 +0.0%
Pressable multiple-10 3.40ms 3.00ms ±0.83ms 1 +0.0%
Pressable multiple-50 16.13ms 16.00ms ±1.41ms 1 +14.3%
Pressable multiple-100 17.67ms 11.00ms ±11.29ms 1 -8.3%

Modal

Scenario Mean Median StdDev Renders vs Baseline
Modal mount 0.30ms 0.00ms ±0.48ms 1 +0.0%
Modal unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Modal rerender 0.40ms 0.00ms ±0.52ms 2 +0.0%
Modal slide-animation 0.40ms 0.00ms ±0.52ms 1 +0.0%
Modal fade-animation 0.30ms 0.00ms ±0.48ms 1 +0.0%
Modal transparent 0.40ms 0.00ms ±0.52ms 1 +0.0%
Modal with-callbacks 0.70ms 0.00ms ±1.25ms 1 +0.0%
Modal rich-content 1.90ms 2.00ms ±0.74ms 1 +0.0%
Modal with-accessibility 0.60ms 0.00ms ±0.97ms 1 +0.0%

Image

Scenario Mean Median StdDev Renders vs Baseline
Image mount 0.00ms 0.00ms ±0.00ms 1 +0.0%
Image unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Image rerender 0.10ms 0.00ms ±0.32ms 2 +0.0%
Image with-resize-mode 0.10ms 0.00ms ±0.32ms 1 +0.0%
Image with-border-radius 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image with-tint-color 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image with-blur-radius 0.10ms 0.00ms ±0.32ms 1 +0.0%
Image with-accessibility 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image multiple-10 1.00ms 1.00ms ±0.00ms 1 +0.0%
Image multiple-50 4.00ms 4.00ms ±0.93ms 1 +33.3%
Image multiple-100 8.40ms 8.00ms ±1.24ms 1 +0.0%

ActivityIndicator

Scenario Mean Median StdDev Renders vs Baseline
ActivityIndicator mount 0.10ms 0.00ms ±0.32ms 1 +0.0%
ActivityIndicator unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
ActivityIndicator rerender 0.30ms 0.00ms ±0.48ms 2 +0.0%
ActivityIndicator size-large 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator size-small 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator with-color 0.10ms 0.00ms ±0.32ms 1 +0.0%
ActivityIndicator not-animating 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator with-accessibility 0.10ms 0.00ms ±0.32ms 1 +0.0%
ActivityIndicator multiple-10 1.00ms 1.00ms ±0.00ms 1 +0.0%
ActivityIndicator multiple-50 4.00ms 4.00ms ±1.31ms 1 +0.0%
ActivityIndicator multiple-100 8.13ms 8.00ms ±1.19ms 1 +14.3%

Switch

Scenario Mean Median StdDev Renders vs Baseline
Switch mount 0.40ms 0.00ms ±0.52ms 1 +0.0%
Switch unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
Switch rerender 0.40ms 0.00ms ±0.52ms 2 -100.0%
Switch value-true 0.20ms 0.00ms ±0.42ms 1 +0.0%
Switch disabled 0.20ms 0.00ms ±0.42ms 1 +0.0%
Switch custom-colors 0.40ms 0.00ms ±0.52ms 1 +0.0%
Switch on-value-change 0.30ms 0.00ms ±0.48ms 1 +0.0%
Switch with-accessibility 0.20ms 0.00ms ±0.42ms 1 +0.0%
Switch multiple-10 1.73ms 2.00ms ±0.46ms 1 +0.0%
Switch multiple-50 9.87ms 9.00ms ±2.50ms 1 +0.0%
Switch multiple-100 18.93ms 20.00ms ±3.17ms 1 +25.0%

Button

Scenario Mean Median StdDev Renders vs Baseline
Button mount 0.70ms 1.00ms ±0.48ms 1 +0.0%
Button unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Button rerender 0.80ms 1.00ms ±0.42ms 2 +0.0%
Button disabled 1.10ms 1.00ms ±1.45ms 1 +0.0%
Button with-color 0.40ms 0.00ms ±0.52ms 1 -100.0%
Button with-accessibility 0.60ms 1.00ms ±0.52ms 1 +0.0%
Button multiple-10 5.93ms 6.00ms ±1.28ms 1 +0.0%
Button multiple-50 25.87ms 27.00ms ±9.52ms 1 +0.0%
Button multiple-100 20.47ms 20.00ms ±4.26ms 1 +5.3%

TextInput

Scenario Mean Median StdDev Renders vs Baseline
TextInput mount 0.10ms 0.00ms ±0.32ms 1 +0.0%
TextInput unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
TextInput rerender 0.30ms 0.00ms ±0.48ms 2 +0.0%
TextInput multiline 0.20ms 0.00ms ±0.42ms 1 +0.0%
TextInput with-value 0.00ms 0.00ms ±0.00ms 1 +0.0%
TextInput styled 0.20ms 0.00ms ±0.42ms 1 +0.0%
TextInput multiple-100 10.73ms 10.00ms ±2.19ms 1 +42.9%

View

Scenario Mean Median StdDev Renders vs Baseline
View mount 0.10ms 0.00ms ±0.32ms 1 +0.0%
View unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
View rerender 0.30ms 0.00ms ±0.48ms 2 +0.0%
View nested-50 4.67ms 4.00ms ±2.23ms 1 +33.3%
View nested-100 10.80ms 11.00ms ±1.74ms 1 +57.1%
View shadow 0.20ms 0.00ms ±0.42ms 1 +0.0%
View border-radius 0.20ms 0.00ms ±0.42ms 1 +0.0%
View nested-500 19.33ms 12.00ms ±15.68ms 1 +20.0%

Text

Scenario Mean Median StdDev Renders vs Baseline
Text mount 0.30ms 0.00ms ±0.48ms 1 +0.0%
Text unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Text rerender 0.30ms 0.00ms ±0.48ms 2 +0.0%
Text long-1000 0.10ms 0.00ms ±0.32ms 1 +0.0%
Text nested 0.30ms 0.00ms ±0.48ms 1 +0.0%
Text styled 0.10ms 0.00ms ±0.32ms 1 +0.0%
Text multiple-100 9.07ms 9.00ms ±1.83ms 1 +28.6%

SectionList.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
SectionList native mount 4.46ms 4.37ms ±0.36ms 1 -32.8%

FlatList.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
FlatList native mount 4.43ms 4.46ms ±0.46ms 1 -51.7%

TouchableHighlight.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
TouchableHighlight native mount 1.39ms 1.26ms ±0.35ms 1 -39.6%

TouchableOpacity.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
TouchableOpacity native mount 1.56ms 1.50ms ±0.16ms 1 -52.3%

Pressable.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Pressable native mount 1.32ms 1.29ms ±0.09ms 1 -48.5%

ScrollView.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
ScrollView native mount 3.47ms 3.40ms ±0.43ms 1 -16.2%

ActivityIndicator.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
ActivityIndicator native mount 1.59ms 1.38ms ±0.59ms 1 -44.3%

TextInput.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
TextInput native mount 2.21ms 2.19ms ±0.22ms 1 -46.4%

Switch.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Switch native mount 1.15ms 1.16ms ±0.06ms 1 -33.2%

Button.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Button native mount 1.91ms 1.82ms ±0.24ms 1 -29.9%

Modal.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Modal native mount 1.00ms 0.85ms ±0.46ms 1 -29.9%

Image.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Image native mount 2.00ms 1.80ms ±0.59ms 1 -20.2%

View.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
View native mount 1.02ms 0.93ms ±0.20ms 1 -34.6%

Text.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Text native mount 1.34ms 1.20ms ±0.47ms 1 -31.1%

@vmoroz vmoroz enabled auto-merge (squash) April 22, 2026 22:46
@vmoroz vmoroz force-pushed the PR/0.84-use-hermes-0.0.0-2604.21001-94aa5e1d branch from 87e95c2 to 33823dc Compare April 22, 2026 22:46
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