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

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Apr 29, 2026
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[0.84] Use hermes 0.0.0-2604.21001-94aa5e1d#16035
vmoroz merged 2 commits intomicrosoft:0.84-stablefrom
vmoroz:PR/0.84-use-hermes-0.0.0-2604.21001-94aa5e1d

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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: f2f36c15
Time: 2026-04-29T04:07:26.909Z
Tests: 161/161 passed

✅ Passed

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

SectionList

Scenario Mean Median StdDev Renders vs Baseline
SectionList mount 5.60ms 5.00ms ±1.43ms 1 +0.0%
SectionList unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
SectionList rerender 11.60ms 11.00ms ±1.96ms 2 +4.8%
SectionList with-3-sections-15-items 6.00ms 6.00ms ±1.56ms 1 +9.1%
SectionList with-5-sections-50-items 5.30ms 5.00ms ±0.48ms 1 -16.7%
SectionList with-10-sections-200-items 5.00ms 5.00ms ±0.47ms 1 -9.1%
SectionList with-20-sections-200-items 5.20ms 5.00ms ±2.10ms 1 +0.0%
SectionList with-section-separator 1.90ms 2.00ms ±0.32ms 1 +0.0%
SectionList with-item-separator 2.40ms 2.50ms ±0.97ms 1 +25.0%
SectionList with-header-footer 1.90ms 2.00ms ±0.57ms 1 +0.0%
SectionList with-section-footer 1.80ms 2.00ms ±0.42ms 1 +0.0%
SectionList with-sticky-section-headers 2.10ms 1.50ms ±1.85ms 1 -25.0%
SectionList with-empty-list 0.10ms 0.00ms ±0.32ms 1 -100.0%
SectionList with-50-sections-1000-items 1.70ms 2.00ms ±0.48ms 1 +0.0%

FlatList

Scenario Mean Median StdDev Renders vs Baseline
FlatList mount 5.00ms 5.00ms ±0.94ms 1 +25.0%
FlatList unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
FlatList rerender 10.10ms 9.50ms ±1.66ms 2 +5.6%
FlatList with-10-items 4.70ms 5.00ms ±0.48ms 1 +25.0%
FlatList with-100-items 5.10ms 5.00ms ±1.29ms 1 +0.0%
FlatList with-500-items 4.40ms 4.50ms ±0.70ms 1 +12.5%
FlatList with-1000-items 4.70ms 4.00ms ±1.25ms 1 +0.0%
FlatList horizontal 4.10ms 4.00ms ±0.88ms 1 -20.0%
FlatList with-separator 2.10ms 2.00ms ±0.32ms 1 +0.0%
FlatList with-header-footer 1.60ms 2.00ms ±0.52ms 1 +0.0%
FlatList with-empty-list 0.50ms 0.50ms ±0.53ms 1 +0.0%
FlatList with-get-item-layout 1.50ms 1.50ms ±0.53ms 1 +50.0%
FlatList inverted 1.90ms 1.00ms ±1.85ms 1 -33.3%
FlatList with-num-columns 2.80ms 3.00ms ±0.42ms 1 +0.0%

TouchableOpacity

Scenario Mean Median StdDev Renders vs Baseline
TouchableOpacity mount 0.60ms 0.50ms ±0.70ms 1 -50.0%
TouchableOpacity unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
TouchableOpacity rerender 1.10ms 1.00ms ±0.74ms 2 +0.0%
TouchableOpacity custom-active-opacity 0.70ms 1.00ms ±0.48ms 1 +0.0%
TouchableOpacity disabled 0.60ms 1.00ms ±0.52ms 1 +0.0%
TouchableOpacity with-all-handlers 0.40ms 0.00ms ±0.52ms 1 -100.0%
TouchableOpacity with-hit-slop 0.90ms 1.00ms ±0.32ms 1 +0.0%
TouchableOpacity with-delay 0.60ms 1.00ms ±0.52ms 1 +0.0%
TouchableOpacity nested 1.40ms 1.00ms ±0.97ms 1 +0.0%
TouchableOpacity multiple-10 5.80ms 5.00ms ±1.78ms 1 -16.7%
TouchableOpacity multiple-50 30.07ms 28.00ms ±10.06ms 1 -3.4%
TouchableOpacity multiple-100 38.00ms 44.00ms ±11.65ms 1 -12.0%

ScrollView

Scenario Mean Median StdDev Renders vs Baseline
ScrollView mount 0.30ms 0.00ms ±0.48ms 1 +0.0%
ScrollView unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
ScrollView rerender 0.40ms 0.00ms ±0.52ms 2 -100.0%
ScrollView children-20 3.20ms 3.00ms ±1.15ms 1 -25.0%
ScrollView children-100 16.93ms 15.00ms ±2.79ms 1 -6.3%
ScrollView horizontal 3.20ms 3.00ms ±0.42ms 1 -25.0%
ScrollView sticky-headers 2.90ms 3.00ms ±0.99ms 1 +0.0%
ScrollView scroll-indicators 1.10ms 1.00ms ±1.10ms 1 +0.0%
ScrollView nested 1.20ms 1.00ms ±0.42ms 1 +0.0%
ScrollView content-container-style 0.80ms 1.00ms ±0.42ms 1 +0.0%
ScrollView children-500 20.67ms 21.00ms ±2.50ms 1 +10.5%

TouchableHighlight

Scenario Mean Median StdDev Renders vs Baseline
TouchableHighlight mount 0.60ms 1.00ms ±0.52ms 1 +100.0%
TouchableHighlight unmount 0.10ms 0.00ms ±0.32ms 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 0.40ms 0.00ms ±0.52ms 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 0.50ms 0.50ms ±0.53ms 1 +Infinity%
TouchableHighlight nested-touchables 0.80ms 1.00ms ±0.42ms 1 +0.0%
TouchableHighlight multiple-touchables-10 2.20ms 2.00ms ±0.63ms 1 -33.3%
TouchableHighlight multiple-touchables-50 13.80ms 13.00ms ±2.66ms 1 +4.0%
TouchableHighlight multiple-touchables-100 25.30ms 25.00ms ±4.24ms 1 +11.1%

Pressable

Scenario Mean Median StdDev Renders vs Baseline
Pressable mount 0.50ms 0.50ms ±0.53ms 1 +Infinity%
Pressable unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Pressable rerender 0.60ms 1.00ms ±0.52ms 2 +100.0%
Pressable with-all-handlers 0.40ms 0.00ms ±0.52ms 1 +0.0%
Pressable with-style-function 0.40ms 0.00ms ±0.52ms 1 +0.0%
Pressable disabled 0.30ms 0.00ms ±0.48ms 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 3.13ms 3.00ms ±1.06ms 1 +0.0%
Pressable multiple-50 16.27ms 15.00ms ±2.46ms 1 +7.1%
Pressable multiple-100 17.07ms 11.00ms ±10.23ms 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 0.50ms 0.50ms ±0.53ms 2 +Infinity%
Modal slide-animation 0.30ms 0.00ms ±0.48ms 1 +0.0%
Modal fade-animation 0.30ms 0.00ms ±0.48ms 1 +0.0%
Modal transparent 0.30ms 0.00ms ±0.48ms 1 +0.0%
Modal with-callbacks 0.20ms 0.00ms ±0.42ms 1 +0.0%
Modal rich-content 2.30ms 2.00ms ±0.95ms 1 +0.0%
Modal with-accessibility 0.40ms 0.00ms ±0.52ms 1 +0.0%

Image

Scenario Mean Median StdDev Renders vs Baseline
Image mount 0.10ms 0.00ms ±0.32ms 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 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image with-border-radius 0.00ms 0.00ms ±0.00ms 1 +0.0%
Image with-tint-color 0.10ms 0.00ms ±0.32ms 1 +0.0%
Image with-blur-radius 0.20ms 0.00ms ±0.42ms 1 +0.0%
Image with-accessibility 0.10ms 0.00ms ±0.32ms 1 +0.0%
Image multiple-10 0.87ms 1.00ms ±0.35ms 1 +0.0%
Image multiple-50 3.80ms 4.00ms ±0.56ms 1 +33.3%
Image multiple-100 8.00ms 7.00ms ±1.73ms 1 -12.5%

ActivityIndicator

Scenario Mean Median StdDev Renders vs Baseline
ActivityIndicator mount 0.10ms 0.00ms ±0.32ms 1 +0.0%
ActivityIndicator unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
ActivityIndicator rerender 0.20ms 0.00ms ±0.42ms 2 +0.0%
ActivityIndicator size-large 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator size-small 0.00ms 0.00ms ±0.00ms 1 +0.0%
ActivityIndicator with-color 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator not-animating 0.10ms 0.00ms ±0.32ms 1 +0.0%
ActivityIndicator with-accessibility 0.20ms 0.00ms ±0.42ms 1 +0.0%
ActivityIndicator multiple-10 0.93ms 1.00ms ±0.26ms 1 +0.0%
ActivityIndicator multiple-50 4.00ms 4.00ms ±1.25ms 1 +0.0%
ActivityIndicator multiple-100 8.53ms 8.00ms ±1.36ms 1 +14.3%

Switch

Scenario Mean Median StdDev Renders vs Baseline
Switch mount 0.30ms 0.00ms ±0.48ms 1 +0.0%
Switch unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
Switch rerender 0.40ms 0.00ms ±0.52ms 2 -100.0%
Switch value-true 0.30ms 0.00ms ±0.48ms 1 +0.0%
Switch disabled 0.30ms 0.00ms ±0.48ms 1 +0.0%
Switch custom-colors 0.30ms 0.00ms ±0.48ms 1 +0.0%
Switch on-value-change 0.70ms 0.50ms ±0.95ms 1 +Infinity%
Switch with-accessibility 0.30ms 0.00ms ±0.48ms 1 +0.0%
Switch multiple-10 1.73ms 2.00ms ±0.46ms 1 +0.0%
Switch multiple-50 10.00ms 9.00ms ±3.27ms 1 +0.0%
Switch multiple-100 19.27ms 18.00ms ±3.86ms 1 +12.5%

Button

Scenario Mean Median StdDev Renders vs Baseline
Button mount 0.60ms 1.00ms ±0.52ms 1 +0.0%
Button unmount 0.20ms 0.00ms ±0.42ms 0 +0.0%
Button rerender 1.20ms 1.00ms ±0.42ms 2 +0.0%
Button disabled 0.60ms 1.00ms ±0.52ms 1 +0.0%
Button with-color 0.60ms 1.00ms ±0.52ms 1 +100.0%
Button with-accessibility 0.50ms 0.50ms ±0.53ms 1 -50.0%
Button multiple-10 5.53ms 5.00ms ±0.74ms 1 -16.7%
Button multiple-50 20.47ms 24.00ms ±7.58ms 1 -11.1%
Button multiple-100 22.33ms 18.00ms ±9.69ms 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 0.20ms 0.00ms ±0.42ms 1 +0.0%
TextInput styled 0.10ms 0.00ms ±0.32ms 1 +0.0%
TextInput multiple-100 7.60ms 7.00ms ±1.50ms 1 +0.0%

View

Scenario Mean Median StdDev Renders vs Baseline
View mount 0.20ms 0.00ms ±0.42ms 1 +0.0%
View unmount 0.00ms 0.00ms ±0.00ms 0 +0.0%
View rerender 0.20ms 0.00ms ±0.42ms 2 +0.0%
View nested-50 3.73ms 4.00ms ±0.70ms 1 +33.3%
View nested-100 8.00ms 8.00ms ±1.60ms 1 +14.3%
View shadow 0.20ms 0.00ms ±0.42ms 1 +0.0%
View border-radius 0.10ms 0.00ms ±0.32ms 1 +0.0%
View nested-500 17.20ms 10.00ms ±12.71ms 1 +0.0%

Text

Scenario Mean Median StdDev Renders vs Baseline
Text mount 0.10ms 0.00ms ±0.32ms 1 +0.0%
Text unmount 0.10ms 0.00ms ±0.32ms 0 +0.0%
Text rerender 0.10ms 0.00ms ±0.32ms 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 8.53ms 8.00ms ±1.60ms 1 +14.3%

SectionList.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
SectionList native mount 5.29ms 5.10ms ±0.72ms 1 -21.6%

FlatList.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
FlatList native mount 5.29ms 5.14ms ±0.56ms 1 -44.3%

TouchableHighlight.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
TouchableHighlight native mount 1.58ms 1.56ms ±0.17ms 1 -25.5%

TouchableOpacity.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
TouchableOpacity native mount 1.62ms 1.46ms ±0.61ms 1 -53.4%

Pressable.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Pressable native mount 1.42ms 1.29ms ±0.25ms 1 -48.5%

ScrollView.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
ScrollView native mount 3.20ms 3.10ms ±0.30ms 1 -23.4%

ActivityIndicator.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
ActivityIndicator native mount 1.60ms 1.36ms ±0.89ms 1 -45.3%

TextInput.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
TextInput native mount 2.31ms 2.33ms ±0.26ms 1 -43.0%

Switch.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Switch native mount 1.27ms 1.23ms ±0.19ms 1 -29.1%

Button.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Button native mount 1.91ms 1.88ms ±0.26ms 1 -27.6%

Modal.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Modal native mount 1.09ms 0.89ms ±0.73ms 1 -27.2%

Image.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Image native mount 1.82ms 1.70ms ±0.43ms 1 -24.9%

View.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
View native mount 0.91ms 0.90ms ±0.04ms 1 -37.0%

Text.native-perf-test.ts

Scenario Mean Median StdDev Renders vs Baseline
Text native mount 1.19ms 1.14ms ±0.18ms 1 -34.3%

@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
@vmoroz vmoroz force-pushed the PR/0.84-use-hermes-0.0.0-2604.21001-94aa5e1d branch from 33823dc to 0ff7bb6 Compare April 29, 2026 03:37
@vmoroz vmoroz merged commit 88a4a78 into microsoft:0.84-stable Apr 29, 2026
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