Use hermes-windows 0.0.0 2604.6001 5335deff

[vmoroz]

Description

Type of Change

• Dependencies (updating a dependency version)

Why

Update the Hermes engine NuGet package to pick up the latest Hermes build from the hermes-windows repo.

What

• Updated HermesVersion in vnext/PropertySheets/JSEngine.props from 0.0.0-2512.22001-bc3d0ed7 to 0.0.0-2604.6001-5335deff
• Regenerated all packages.lock.json files across the repo to reflect the new package version (32 files updated)

NuGet package: https://www.nuget.org/packages/Microsoft.JavaScript.Hermes/0.0.0-2604.6001-5335deff

Screenshots

N/A

Testing

• Built vnext/ReactWindows-Desktop.sln (Debug|x64) successfully — all native projects compiled with no errors related to the Hermes update.

Changelog

Should this change be included in the release notes: no

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Performance Test Results

Branch: PR/use-hermes-0.0.0-2604.6001-5335deff
Commit: ed133537
Time: 2026-04-10T21:40:32.716Z
Tests: 161/161 passed

✅ Passed

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

SectionList

Scenario	Mean	Median	StdDev	Renders	vs Baseline
SectionList mount	7.00ms	6.50ms	±1.56ms	1	+30.0%
SectionList unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
SectionList rerender	13.30ms	12.00ms	±3.30ms	2	+14.3%
SectionList with-3-sections-15-items	7.40ms	7.50ms	±2.17ms	1	+36.4%
SectionList with-5-sections-50-items	7.00ms	6.50ms	±1.25ms	1	+8.3%
SectionList with-10-sections-200-items	7.10ms	7.00ms	±1.66ms	1	+27.3%
SectionList with-20-sections-200-items	6.10ms	6.00ms	±2.47ms	1	+20.0%
SectionList with-section-separator	2.80ms	3.00ms	±0.42ms	1	+50.0%
SectionList with-item-separator	2.50ms	2.00ms	±0.97ms	1	+0.0%
SectionList with-header-footer	2.40ms	2.00ms	±0.84ms	1	+0.0%
SectionList with-section-footer	2.20ms	2.00ms	±0.63ms	1	+0.0%
SectionList with-sticky-section-headers	2.70ms	2.00ms	±2.41ms	1	+0.0%
SectionList with-empty-list	0.50ms	0.50ms	±0.53ms	1	-50.0%
SectionList with-50-sections-1000-items	1.80ms	2.00ms	±0.63ms	1	+0.0%

FlatList

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList mount	4.90ms	4.50ms	±1.52ms	1	+12.5%
FlatList unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
FlatList rerender	10.90ms	11.00ms	±1.91ms	2	+22.2%
FlatList with-10-items	5.50ms	5.00ms	±1.08ms	1	+25.0%
FlatList with-100-items	5.90ms	5.00ms	±2.23ms	1	+0.0%
FlatList with-500-items	4.80ms	4.00ms	±1.55ms	1	+0.0%
FlatList with-1000-items	5.20ms	5.00ms	±2.10ms	1	+25.0%
FlatList horizontal	4.20ms	4.50ms	±1.40ms	1	-10.0%
FlatList with-separator	1.90ms	2.00ms	±0.74ms	1	+0.0%
FlatList with-header-footer	2.30ms	2.00ms	±0.67ms	1	+0.0%
FlatList with-empty-list	0.40ms	0.00ms	±0.52ms	1	-100.0%
FlatList with-get-item-layout	1.70ms	2.00ms	±0.67ms	1	+100.0%
FlatList inverted	2.40ms	1.50ms	±2.46ms	1	+0.0%
FlatList with-num-columns	4.00ms	4.50ms	±1.15ms	1	+50.0%

TouchableOpacity

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableOpacity mount	0.90ms	1.00ms	±0.32ms	1	+0.0%
TouchableOpacity unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
TouchableOpacity rerender	1.30ms	1.00ms	±0.67ms	2	+0.0%
TouchableOpacity custom-active-opacity	1.00ms	1.00ms	±0.00ms	1	+0.0%
TouchableOpacity disabled	0.10ms	0.00ms	±0.32ms	1	-100.0%
TouchableOpacity with-all-handlers	0.70ms	1.00ms	±0.48ms	1	+0.0%
TouchableOpacity with-hit-slop	0.60ms	1.00ms	±0.52ms	1	+0.0%
TouchableOpacity with-delay	0.70ms	1.00ms	±0.48ms	1	+0.0%
TouchableOpacity nested	1.50ms	1.50ms	±0.53ms	1	+50.0%
TouchableOpacity multiple-10	7.47ms	8.00ms	±1.77ms	1	+33.3%
TouchableOpacity multiple-50	30.00ms	31.00ms	±4.63ms	1	+6.9%
TouchableOpacity multiple-100	46.87ms	48.00ms	±11.61ms	1	-4.0%

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	0.70ms	1.00ms	±0.48ms	2	+0.0%
ScrollView children-20	4.00ms	4.00ms	±1.41ms	1	+0.0%
ScrollView children-100	18.93ms	18.00ms	±5.64ms	1	+12.5%
ScrollView horizontal	4.10ms	4.00ms	±1.29ms	1	+0.0%
ScrollView sticky-headers	3.30ms	4.00ms	±1.34ms	1	+33.3%
ScrollView scroll-indicators	0.80ms	1.00ms	±0.42ms	1	+0.0%
ScrollView nested	2.00ms	2.00ms	±1.05ms	1	+100.0%
ScrollView content-container-style	1.20ms	1.00ms	±1.40ms	1	+0.0%
ScrollView children-500	35.47ms	25.00ms	±26.57ms	1	+31.6%

TouchableHighlight

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight mount	0.50ms	0.50ms	±0.53ms	1	+0.0%
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	0.60ms	1.00ms	±0.52ms	1	+Infinity%
TouchableHighlight custom-active-opacity	1.00ms	0.50ms	±1.83ms	1	+Infinity%
TouchableHighlight disabled	0.50ms	0.50ms	±0.53ms	1	+Infinity%
TouchableHighlight with-all-handlers	0.40ms	0.00ms	±0.52ms	1	+0.0%
TouchableHighlight with-hit-slop	0.30ms	0.00ms	±0.48ms	1	+0.0%
TouchableHighlight nested-touchables	1.10ms	1.00ms	±0.32ms	1	+0.0%
TouchableHighlight multiple-touchables-10	2.70ms	3.00ms	±0.82ms	1	+0.0%
TouchableHighlight multiple-touchables-50	15.30ms	15.00ms	±1.89ms	1	+20.0%
TouchableHighlight multiple-touchables-100	34.40ms	28.50ms	±14.74ms	1	+26.7%

Pressable

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable mount	0.60ms	1.00ms	±0.52ms	1	+Infinity%
Pressable unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Pressable rerender	0.50ms	0.50ms	±0.53ms	2	+0.0%
Pressable with-all-handlers	0.60ms	1.00ms	±0.52ms	1	+Infinity%
Pressable with-style-function	0.30ms	0.00ms	±0.48ms	1	+0.0%
Pressable disabled	0.20ms	0.00ms	±0.42ms	1	+0.0%
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	3.40ms	3.00ms	±1.18ms	1	+0.0%
Pressable multiple-50	17.93ms	17.00ms	±2.76ms	1	+21.4%
Pressable multiple-100	19.13ms	14.00ms	±12.19ms	1	+16.7%

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	1.00ms	1.00ms	±1.15ms	2	+Infinity%
Modal slide-animation	0.30ms	0.00ms	±0.48ms	1	+0.0%
Modal fade-animation	0.60ms	1.00ms	±0.52ms	1	+Infinity%
Modal transparent	0.40ms	0.00ms	±0.52ms	1	+0.0%
Modal with-callbacks	0.10ms	0.00ms	±0.32ms	1	+0.0%
Modal rich-content	1.70ms	2.00ms	±0.48ms	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	0.20ms	0.00ms	±0.42ms	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	0.10ms	0.00ms	±0.32ms	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	0.73ms	1.00ms	±0.46ms	1	+0.0%
Image multiple-50	4.20ms	4.00ms	±0.94ms	1	+33.3%
Image multiple-100	8.67ms	8.00ms	±2.29ms	1	+0.0%

ActivityIndicator

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ActivityIndicator mount	0.10ms	0.00ms	±0.32ms	1	+0.0%
ActivityIndicator unmount	0.00ms	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	0.20ms	0.00ms	±0.42ms	1	+0.0%
ActivityIndicator with-accessibility	0.20ms	0.00ms	±0.42ms	1	+0.0%
ActivityIndicator multiple-10	0.80ms	1.00ms	±0.41ms	1	+0.0%
ActivityIndicator multiple-50	4.20ms	4.00ms	±1.01ms	1	+0.0%
ActivityIndicator multiple-100	8.80ms	8.00ms	±1.74ms	1	+14.3%

Switch

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Switch mount	0.20ms	0.00ms	±0.42ms	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	0.40ms	0.00ms	±0.52ms	1	+0.0%
Switch disabled	0.60ms	0.00ms	±1.26ms	1	+0.0%
Switch custom-colors	0.30ms	0.00ms	±0.48ms	1	+0.0%
Switch on-value-change	0.10ms	0.00ms	±0.32ms	1	+0.0%
Switch with-accessibility	0.20ms	0.00ms	±0.42ms	1	+0.0%
Switch multiple-10	1.73ms	2.00ms	±0.59ms	1	+0.0%
Switch multiple-50	9.80ms	9.00ms	±2.46ms	1	+0.0%
Switch multiple-100	19.67ms	18.00ms	±3.75ms	1	+12.5%

Button

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Button mount	0.80ms	1.00ms	±0.42ms	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	0.50ms	0.50ms	±0.53ms	1	-50.0%
Button with-color	0.60ms	1.00ms	±0.52ms	1	+100.0%
Button with-accessibility	0.60ms	1.00ms	±0.52ms	1	+0.0%
Button multiple-10	6.13ms	6.00ms	±1.46ms	1	+0.0%
Button multiple-50	24.40ms	27.00ms	±8.89ms	1	+0.0%
Button multiple-100	21.60ms	18.00ms	±11.89ms	1	-5.3%

TextInput

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TextInput mount	0.10ms	0.00ms	±0.32ms	1	+0.0%
TextInput unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
TextInput rerender	0.90ms	0.00ms	±2.18ms	2	+0.0%
TextInput multiline	0.20ms	0.00ms	±0.42ms	1	+0.0%
TextInput with-value	0.10ms	0.00ms	±0.32ms	1	+0.0%
TextInput styled	0.10ms	0.00ms	±0.32ms	1	+0.0%
TextInput multiple-100	8.07ms	8.00ms	±1.39ms	1	+14.3%

View

Scenario	Mean	Median	StdDev	Renders	vs Baseline
View mount	0.40ms	0.00ms	±0.52ms	1	+0.0%
View unmount	0.40ms	0.00ms	±1.26ms	0	+0.0%
View rerender	0.20ms	0.00ms	±0.42ms	2	+0.0%
View nested-50	5.60ms	6.00ms	±2.97ms	1	+100.0%
View nested-100	9.73ms	8.00ms	±3.03ms	1	+14.3%
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	20.27ms	15.00ms	±15.13ms	1	+50.0%

Text

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text mount	0.20ms	0.00ms	±0.42ms	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	0.20ms	0.00ms	±0.42ms	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	9.73ms	9.00ms	±2.71ms	1	+28.6%

SectionList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
SectionList native mount	5.18ms	4.88ms	±0.83ms	1	-24.9%

FlatList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList native mount	4.87ms	4.50ms	±1.07ms	1	-51.3%

TouchableHighlight.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight native mount	1.47ms	1.46ms	±0.22ms	1	-30.1%

TouchableOpacity.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableOpacity native mount	1.91ms	1.77ms	±0.26ms	1	-43.5%

Pressable.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable native mount	1.60ms	1.57ms	±0.18ms	1	-37.6%

ScrollView.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ScrollView native mount	3.39ms	3.28ms	±0.34ms	1	-19.0%

ActivityIndicator.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ActivityIndicator native mount	1.66ms	1.48ms	±0.56ms	1	-40.4%

TextInput.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TextInput native mount	2.14ms	2.07ms	±0.38ms	1	-49.3%

Switch.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Switch native mount	1.22ms	1.21ms	±0.21ms	1	-30.4%

Button.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Button native mount	1.86ms	1.80ms	±0.31ms	1	-30.7%

Modal.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Modal native mount	1.00ms	0.92ms	±0.32ms	1	-24.8%

Image.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Image native mount	1.87ms	1.69ms	±0.48ms	1	-25.3%

View.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
View native mount	1.05ms	0.95ms	±0.21ms	1	-33.3%

Text.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text native mount	1.23ms	1.18ms	±0.17ms	1	-32.3%