[0.83] Use hermes 0.0.0-2604.21001-94aa5e1d

[vmoroz]

Cherry pick:

• Use hermes-windows 0.0.0-2604.21001-94aa5e1d #16019

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Performance Test Results

Branch: PR/0.83-use-hermes-0.0.0-2604.21001-94aa5e1d
Commit: 8993c8d9
Time: 2026-04-22T21:46:17.321Z
Tests: 159/161 passed

❌ Regressions Detected

Button

Scenario	Baseline	Current	Change	Status
Button multiple-50	22.40ms	31.73ms	+37.0%	❌
Button multiple-100	19.13ms	53.07ms	+263.2%	❌

Button multiple-50: Duration increased by 37.0% / +10.00ms (threshold: 15% & 5ms)
Button multiple-100: Duration increased by 263.2% / +50.00ms (threshold: 10% & 10ms)

✅ Passed

152 scenario(s) across 27 suite(s) — no regressions

SectionList

Scenario	Mean	Median	StdDev	Renders	vs Baseline
SectionList mount	5.30ms	5.00ms	±0.82ms	1	+0.0%
SectionList unmount	0.20ms	0.00ms	±0.42ms	0	+0.0%
SectionList rerender	13.10ms	12.50ms	±2.88ms	2	+19.0%
SectionList with-3-sections-15-items	6.80ms	7.00ms	±1.32ms	1	+27.3%
SectionList with-5-sections-50-items	5.70ms	6.00ms	±0.67ms	1	+0.0%
SectionList with-10-sections-200-items	7.40ms	8.00ms	±2.41ms	1	+45.5%
SectionList with-20-sections-200-items	5.70ms	5.50ms	±2.36ms	1	+10.0%
SectionList with-section-separator	2.60ms	2.00ms	±1.90ms	1	+0.0%
SectionList with-item-separator	2.70ms	2.50ms	±1.06ms	1	+25.0%
SectionList with-header-footer	3.70ms	3.00ms	±2.31ms	1	+50.0%
SectionList with-section-footer	2.30ms	2.00ms	±0.95ms	1	+0.0%
SectionList with-sticky-section-headers	2.20ms	2.00ms	±1.03ms	1	+0.0%
SectionList with-empty-list	0.60ms	1.00ms	±0.52ms	1	+0.0%
SectionList with-50-sections-1000-items	2.10ms	2.00ms	±0.74ms	1	+0.0%

FlatList

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList mount	5.00ms	4.00ms	±2.05ms	1	+0.0%
FlatList unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
FlatList rerender	11.70ms	11.50ms	±2.67ms	2	+27.8%
FlatList with-10-items	5.20ms	5.00ms	±0.42ms	1	+25.0%
FlatList with-100-items	6.10ms	5.00ms	±1.91ms	1	+0.0%
FlatList with-500-items	5.80ms	5.00ms	±1.62ms	1	+25.0%
FlatList with-1000-items	5.90ms	5.00ms	±2.02ms	1	+25.0%
FlatList horizontal	4.30ms	5.00ms	±1.25ms	1	+0.0%
FlatList with-separator	2.20ms	2.00ms	±0.79ms	1	+0.0%
FlatList with-header-footer	1.40ms	1.00ms	±0.52ms	1	-50.0%
FlatList with-empty-list	0.50ms	0.50ms	±0.53ms	1	+0.0%
FlatList with-get-item-layout	2.00ms	2.00ms	±0.47ms	1	+100.0%
FlatList inverted	1.60ms	2.00ms	±0.52ms	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	1.00ms	1.00ms	±0.00ms	1	+0.0%
TouchableOpacity unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
TouchableOpacity rerender	1.60ms	2.00ms	±0.52ms	2	+100.0%
TouchableOpacity custom-active-opacity	0.90ms	1.00ms	±0.32ms	1	+0.0%
TouchableOpacity disabled	0.70ms	1.00ms	±0.48ms	1	+0.0%
TouchableOpacity with-all-handlers	0.80ms	1.00ms	±0.42ms	1	+0.0%
TouchableOpacity with-hit-slop	1.10ms	1.00ms	±0.32ms	1	+0.0%
TouchableOpacity with-delay	0.80ms	1.00ms	±0.42ms	1	+0.0%
TouchableOpacity nested	1.60ms	2.00ms	±0.52ms	1	+100.0%
TouchableOpacity multiple-10	7.67ms	7.00ms	±2.79ms	1	+16.7%
TouchableOpacity multiple-50	36.00ms	35.00ms	±4.99ms	1	+20.7%
TouchableOpacity multiple-100	58.87ms	62.00ms	±12.82ms	1	+24.0%

ScrollView

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ScrollView mount	0.50ms	0.50ms	±0.53ms	1	+Infinity%
ScrollView unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
ScrollView rerender	0.60ms	1.00ms	±0.52ms	2	+0.0%
ScrollView children-20	3.53ms	3.00ms	±1.41ms	1	-25.0%
ScrollView children-100	18.07ms	17.00ms	±4.22ms	1	+6.3%
ScrollView horizontal	4.40ms	4.00ms	±1.07ms	1	+0.0%
ScrollView sticky-headers	3.00ms	3.00ms	±1.15ms	1	+0.0%
ScrollView scroll-indicators	0.80ms	1.00ms	±0.42ms	1	+0.0%
ScrollView nested	1.70ms	2.00ms	±0.67ms	1	+100.0%
ScrollView content-container-style	1.10ms	1.00ms	±0.32ms	1	+0.0%
ScrollView children-500	22.27ms	21.00ms	±4.62ms	1	+10.5%

TouchableHighlight

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight mount	0.40ms	0.00ms	±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	0.40ms	0.00ms	±0.52ms	1	+0.0%
TouchableHighlight custom-active-opacity	0.30ms	0.00ms	±0.48ms	1	+0.0%
TouchableHighlight disabled	0.20ms	0.00ms	±0.42ms	1	+0.0%
TouchableHighlight with-all-handlers	0.40ms	0.00ms	±0.52ms	1	+0.0%
TouchableHighlight with-hit-slop	0.40ms	0.00ms	±0.52ms	1	+0.0%
TouchableHighlight nested-touchables	1.60ms	1.00ms	±1.35ms	1	+0.0%
TouchableHighlight multiple-touchables-10	2.80ms	3.00ms	±0.42ms	1	+0.0%
TouchableHighlight multiple-touchables-50	17.20ms	17.50ms	±3.16ms	1	+40.0%
TouchableHighlight multiple-touchables-100	28.10ms	27.00ms	±5.88ms	1	+20.0%

Pressable

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable mount	0.50ms	0.50ms	±0.53ms	1	+Infinity%
Pressable unmount	0.70ms	0.00ms	±1.89ms	0	+0.0%
Pressable rerender	0.80ms	1.00ms	±0.63ms	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	0.50ms	0.50ms	±0.53ms	1	+Infinity%
Pressable with-hit-slop	0.40ms	0.00ms	±0.52ms	1	+0.0%
Pressable nested	0.70ms	1.00ms	±0.48ms	1	+0.0%
Pressable multiple-10	3.07ms	3.00ms	±0.26ms	1	+0.0%
Pressable multiple-50	19.20ms	19.00ms	±3.63ms	1	+35.7%
Pressable multiple-100	20.53ms	14.00ms	±13.06ms	1	+16.7%

Modal

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Modal mount	0.40ms	0.00ms	±0.52ms	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	±0.70ms	1	+0.0%
Modal fade-animation	0.50ms	0.50ms	±0.53ms	1	+Infinity%
Modal transparent	0.30ms	0.00ms	±0.48ms	1	+0.0%
Modal with-callbacks	0.40ms	0.00ms	±0.52ms	1	+0.0%
Modal rich-content	2.20ms	2.00ms	±1.32ms	1	+0.0%
Modal with-accessibility	0.30ms	0.00ms	±0.48ms	1	+0.0%

Image

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Image mount	0.30ms	0.00ms	±0.48ms	1	+0.0%
Image unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Image rerender	0.40ms	0.00ms	±0.52ms	2	+0.0%
Image with-resize-mode	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image with-border-radius	0.20ms	0.00ms	±0.42ms	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	0.30ms	0.00ms	±0.48ms	1	+0.0%
Image multiple-10	1.07ms	1.00ms	±0.70ms	1	+0.0%
Image multiple-50	4.07ms	4.00ms	±0.96ms	1	+33.3%
Image multiple-100	10.93ms	11.00ms	±1.98ms	1	+37.5%

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	0.50ms	0.50ms	±0.53ms	2	+Infinity%
ActivityIndicator size-large	0.10ms	0.00ms	±0.32ms	1	+0.0%
ActivityIndicator size-small	0.00ms	0.00ms	±0.00ms	1	+0.0%
ActivityIndicator with-color	0.10ms	0.00ms	±0.32ms	1	+0.0%
ActivityIndicator not-animating	0.30ms	0.00ms	±0.48ms	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	4.60ms	4.00ms	±1.72ms	1	+0.0%
ActivityIndicator multiple-100	10.67ms	10.00ms	±2.32ms	1	+42.9%

Switch

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Switch mount	0.30ms	0.00ms	±0.48ms	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	0.50ms	0.50ms	±0.53ms	1	+Infinity%
Switch disabled	0.10ms	0.00ms	±0.32ms	1	+0.0%
Switch custom-colors	0.20ms	0.00ms	±0.42ms	1	+0.0%
Switch on-value-change	0.50ms	0.00ms	±0.71ms	1	+0.0%
Switch with-accessibility	0.20ms	0.00ms	±0.42ms	1	+0.0%
Switch multiple-10	2.13ms	2.00ms	±1.30ms	1	+0.0%
Switch multiple-50	11.20ms	10.00ms	±2.83ms	1	+11.1%
Switch multiple-100	22.60ms	20.00ms	±4.75ms	1	+25.0%

TextInput

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TextInput mount	0.20ms	0.00ms	±0.42ms	1	+0.0%
TextInput unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
TextInput rerender	0.20ms	0.00ms	±0.42ms	2	+0.0%
TextInput multiline	0.30ms	0.00ms	±0.48ms	1	+0.0%
TextInput with-value	0.20ms	0.00ms	±0.42ms	1	+0.0%
TextInput styled	0.30ms	0.00ms	±0.48ms	1	+0.0%
TextInput multiple-100	9.73ms	10.00ms	±1.67ms	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	4.73ms	4.00ms	±1.33ms	1	+33.3%
View nested-100	10.00ms	9.00ms	±2.17ms	1	+28.6%
View shadow	0.40ms	0.00ms	±0.52ms	1	+0.0%
View border-radius	0.10ms	0.00ms	±0.32ms	1	+0.0%
View nested-500	22.27ms	13.00ms	±16.62ms	1	+30.0%

Text

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text mount	0.10ms	0.00ms	±0.32ms	1	+0.0%
Text unmount	0.20ms	0.00ms	±0.63ms	0	+0.0%
Text rerender	1.00ms	0.50ms	±1.83ms	2	+Infinity%
Text long-1000	0.20ms	0.00ms	±0.42ms	1	+0.0%
Text nested	0.40ms	0.00ms	±0.52ms	1	+0.0%
Text styled	0.20ms	0.00ms	±0.42ms	1	+0.0%
Text multiple-100	10.40ms	10.00ms	±2.56ms	1	+42.9%

SectionList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
SectionList native mount	4.89ms	4.47ms	±0.77ms	1	-31.3%

FlatList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList native mount	4.32ms	4.11ms	±0.72ms	1	-55.4%

TouchableHighlight.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight native mount	1.61ms	1.34ms	±0.59ms	1	-35.7%

TouchableOpacity.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableOpacity native mount	1.61ms	1.56ms	±0.18ms	1	-50.3%

Pressable.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable native mount	1.50ms	1.40ms	±0.23ms	1	-44.3%

ScrollView.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ScrollView native mount	3.44ms	3.13ms	±0.86ms	1	-22.7%

ActivityIndicator.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ActivityIndicator native mount	1.28ms	1.22ms	±0.19ms	1	-50.9%

TextInput.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TextInput native mount	2.03ms	1.83ms	±0.63ms	1	-55.2%

Switch.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Switch native mount	1.30ms	1.26ms	±0.16ms	1	-27.5%

Button.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Button native mount	1.91ms	1.89ms	±0.15ms	1	-27.4%

Modal.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Modal native mount	1.20ms	1.14ms	±0.13ms	1	-6.5%

Image.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Image native mount	1.79ms	1.75ms	±0.15ms	1	-22.7%

View.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
View native mount	1.25ms	1.15ms	±0.30ms	1	-19.2%

Text.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text native mount	1.45ms	1.37ms	±0.26ms	1	-21.1%