Fix cpp-lib codegen spec include

[vivekjm]

Summary

Fixes #15094.

Updates the C++ library template to derive generated codegen include names from package.json codegenConfig.name when it exists, matching codegen-windows normalization. This avoids generating headers that include Native<project folder>Spec.g.h for libraries whose codegen spec name intentionally differs from the package or Windows project name, such as react-native-webview.

The template now falls back to the previous <ProjectName>Spec naming behavior when codegenConfig.name is unavailable, and no longer scans existing generated codegen output during template generation.

Test Plan

• node --check vnext/templates/cpp-lib/template.config.js
• git diff --check
• Static render check for a codegenConfig.name of RNCWebViewSpec, confirming the generated header references NativeRNCWebViewSpec.g.h and ReactNativeWebviewCodegen::RNCWebViewSpec.

Note: yarn change --help could not run in this checkout because the local Beachball binary is not installed (command not found: beachball), so I added the Beachball change file manually using the existing schema.

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Performance Test Results

Branch: codex/fix-cpp-lib-codegen-spec-name
Commit: 13188f7f
Time: 2026-05-29T04:09:45.065Z
Tests: 161/161 passed

✅ Passed

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

SectionList

Scenario	Mean	Median	StdDev	Renders	vs Baseline
SectionList mount	3.40ms	3.00ms	±0.52ms	1	-40.0%
SectionList unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
SectionList rerender	7.40ms	7.50ms	±0.97ms	2	-28.6%
SectionList with-3-sections-15-items	3.70ms	4.00ms	±0.48ms	1	-27.3%
SectionList with-5-sections-50-items	3.90ms	4.00ms	±0.99ms	1	-33.3%
SectionList with-10-sections-200-items	3.90ms	4.00ms	±1.29ms	1	-27.3%
SectionList with-20-sections-200-items	3.50ms	3.50ms	±1.72ms	1	-30.0%
SectionList with-section-separator	1.30ms	1.00ms	±0.48ms	1	-50.0%
SectionList with-item-separator	1.60ms	1.50ms	±0.70ms	1	-25.0%
SectionList with-header-footer	1.70ms	1.00ms	±1.25ms	1	-50.0%
SectionList with-section-footer	1.00ms	1.00ms	±0.00ms	1	-50.0%
SectionList with-sticky-section-headers	1.40ms	1.00ms	±0.52ms	1	-50.0%
SectionList with-empty-list	0.70ms	0.00ms	±1.25ms	1	-100.0%
SectionList with-50-sections-1000-items	1.00ms	1.00ms	±0.00ms	1	-50.0%

FlatList

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList mount	2.90ms	3.00ms	±1.20ms	1	-25.0%
FlatList unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
FlatList rerender	6.10ms	6.00ms	±0.57ms	2	-33.3%
FlatList with-10-items	2.90ms	3.00ms	±0.32ms	1	-25.0%
FlatList with-100-items	3.30ms	3.00ms	±0.48ms	1	-40.0%
FlatList with-500-items	3.40ms	3.00ms	±0.97ms	1	-25.0%
FlatList with-1000-items	3.20ms	3.00ms	±0.42ms	1	-25.0%
FlatList horizontal	3.20ms	3.00ms	±1.23ms	1	-40.0%
FlatList with-separator	1.40ms	1.00ms	±0.52ms	1	-50.0%
FlatList with-header-footer	1.50ms	1.00ms	±1.58ms	1	-50.0%
FlatList with-empty-list	0.30ms	0.00ms	±0.48ms	1	-100.0%
FlatList with-get-item-layout	1.00ms	1.00ms	±0.00ms	1	+0.0%
FlatList inverted	1.10ms	1.00ms	±0.32ms	1	-33.3%
FlatList with-num-columns	2.20ms	2.00ms	±1.75ms	1	-33.3%

TouchableOpacity

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableOpacity mount	0.70ms	1.00ms	±0.48ms	1	+0.0%
TouchableOpacity unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
TouchableOpacity rerender	0.60ms	1.00ms	±0.52ms	2	+0.0%
TouchableOpacity custom-active-opacity	0.50ms	0.50ms	±0.53ms	1	-50.0%
TouchableOpacity disabled	0.30ms	0.00ms	±0.48ms	1	-100.0%
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	1.10ms	1.00ms	±0.32ms	1	+0.0%
TouchableOpacity multiple-10	3.93ms	4.00ms	±1.10ms	1	-33.3%
TouchableOpacity multiple-50	17.60ms	17.00ms	±1.99ms	1	-41.4%
TouchableOpacity multiple-100	14.60ms	14.00ms	±2.97ms	1	-72.0%

ScrollView

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ScrollView mount	0.40ms	0.00ms	±0.97ms	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	2.13ms	2.00ms	±0.35ms	1	-50.0%
ScrollView children-100	11.67ms	11.00ms	±1.72ms	1	-31.3%
ScrollView horizontal	2.40ms	2.00ms	±0.52ms	1	-50.0%
ScrollView sticky-headers	2.20ms	2.00ms	±1.14ms	1	-33.3%
ScrollView scroll-indicators	0.60ms	1.00ms	±0.52ms	1	+0.0%
ScrollView nested	1.10ms	1.00ms	±0.32ms	1	+0.0%
ScrollView content-container-style	0.60ms	1.00ms	±0.52ms	1	+0.0%
ScrollView children-500	14.73ms	14.00ms	±1.94ms	1	-26.3%

TouchableHighlight

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight mount	0.20ms	0.00ms	±0.42ms	1	-100.0%
TouchableHighlight unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
TouchableHighlight rerender	0.40ms	0.00ms	±0.52ms	2	-100.0%
TouchableHighlight custom-underlay-color	0.60ms	0.00ms	±1.26ms	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	0.10ms	0.00ms	±0.32ms	1	+0.0%
TouchableHighlight with-hit-slop	0.20ms	0.00ms	±0.42ms	1	+0.0%
TouchableHighlight nested-touchables	0.50ms	0.50ms	±0.53ms	1	-50.0%
TouchableHighlight multiple-touchables-10	1.50ms	1.50ms	±0.53ms	1	-50.0%
TouchableHighlight multiple-touchables-50	9.30ms	9.00ms	±1.16ms	1	-28.0%
TouchableHighlight multiple-touchables-100	18.00ms	18.00ms	±2.11ms	1	-20.0%

Pressable

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable mount	0.20ms	0.00ms	±0.42ms	1	+0.0%
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	0.30ms	0.00ms	±0.48ms	1	+0.0%
Pressable with-style-function	0.20ms	0.00ms	±0.42ms	1	+0.0%
Pressable disabled	0.20ms	0.00ms	±0.42ms	1	+0.0%
Pressable with-hit-slop	0.10ms	0.00ms	±0.32ms	1	+0.0%
Pressable nested	0.50ms	0.50ms	±0.53ms	1	-50.0%
Pressable multiple-10	2.00ms	2.00ms	±0.00ms	1	-33.3%
Pressable multiple-50	10.40ms	10.00ms	±1.30ms	1	-28.6%
Pressable multiple-100	11.33ms	9.00ms	±6.44ms	1	-25.0%

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	0.30ms	0.00ms	±0.48ms	1	+0.0%
Modal fade-animation	0.20ms	0.00ms	±0.42ms	1	+0.0%
Modal transparent	0.10ms	0.00ms	±0.32ms	1	+0.0%
Modal with-callbacks	0.20ms	0.00ms	±0.42ms	1	+0.0%
Modal rich-content	1.00ms	1.00ms	±0.00ms	1	-50.0%
Modal with-accessibility	0.10ms	0.00ms	±0.32ms	1	+0.0%

Image

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Image mount	0.10ms	0.00ms	±0.32ms	1	+0.0%
Image unmount	0.10ms	0.00ms	±0.32ms	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	0.10ms	0.00ms	±0.32ms	1	+0.0%
Image with-tint-color	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image with-blur-radius	0.00ms	0.00ms	±0.00ms	1	+0.0%
Image with-accessibility	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image multiple-10	0.73ms	1.00ms	±0.46ms	1	+0.0%
Image multiple-50	4.93ms	5.00ms	±1.10ms	1	+66.7%
Image multiple-100	6.40ms	6.00ms	±2.85ms	1	-25.0%

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	0.60ms	0.00ms	±1.26ms	2	+0.0%
ActivityIndicator size-large	0.10ms	0.00ms	±0.32ms	1	+0.0%
ActivityIndicator size-small	0.10ms	0.00ms	±0.32ms	1	+0.0%
ActivityIndicator with-color	0.00ms	0.00ms	±0.00ms	1	+0.0%
ActivityIndicator not-animating	0.10ms	0.00ms	±0.32ms	1	+0.0%
ActivityIndicator with-accessibility	0.00ms	0.00ms	±0.00ms	1	+0.0%
ActivityIndicator multiple-10	0.53ms	1.00ms	±0.52ms	1	+0.0%
ActivityIndicator multiple-50	2.40ms	2.00ms	±0.51ms	1	-50.0%
ActivityIndicator multiple-100	5.47ms	5.00ms	±0.74ms	1	-28.6%

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	0.10ms	0.00ms	±0.32ms	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	0.30ms	0.00ms	±0.48ms	1	+0.0%
Switch on-value-change	0.20ms	0.00ms	±0.42ms	1	+0.0%
Switch with-accessibility	0.00ms	0.00ms	±0.00ms	1	+0.0%
Switch multiple-10	1.00ms	1.00ms	±0.00ms	1	-50.0%
Switch multiple-50	6.47ms	6.00ms	±1.73ms	1	-33.3%
Switch multiple-100	12.60ms	11.00ms	±3.50ms	1	-31.3%

Button

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Button mount	0.50ms	0.50ms	±0.53ms	1	-50.0%
Button unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Button rerender	1.10ms	1.00ms	±1.10ms	2	+0.0%
Button disabled	0.50ms	0.50ms	±0.53ms	1	-50.0%
Button with-color	0.40ms	0.00ms	±0.52ms	1	-100.0%
Button with-accessibility	0.50ms	0.50ms	±0.53ms	1	-50.0%
Button multiple-10	3.93ms	4.00ms	±1.22ms	1	-33.3%
Button multiple-50	14.73ms	17.00ms	±5.79ms	1	-37.0%
Button multiple-100	10.87ms	10.00ms	±1.55ms	1	-47.4%

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	0.20ms	0.00ms	±0.42ms	2	+0.0%
TextInput multiline	0.10ms	0.00ms	±0.32ms	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	5.00ms	5.00ms	±0.93ms	1	-28.6%

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	2.47ms	2.00ms	±1.06ms	1	-33.3%
View nested-100	5.20ms	5.00ms	±1.32ms	1	-28.6%
View shadow	0.10ms	0.00ms	±0.32ms	1	+0.0%
View border-radius	0.10ms	0.00ms	±0.32ms	1	+0.0%
View nested-500	12.40ms	7.00ms	±9.66ms	1	-30.0%

Text

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text mount	0.00ms	0.00ms	±0.00ms	1	+0.0%
Text unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Text rerender	0.50ms	0.00ms	±1.27ms	2	+0.0%
Text long-1000	0.20ms	0.00ms	±0.42ms	1	+0.0%
Text nested	0.20ms	0.00ms	±0.42ms	1	+0.0%
Text styled	0.10ms	0.00ms	±0.32ms	1	+0.0%
Text multiple-100	5.60ms	5.00ms	±1.18ms	1	-28.6%

SectionList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
SectionList native mount	3.76ms	3.63ms	±0.46ms	1	-44.1%

FlatList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList native mount	3.85ms	3.71ms	±0.62ms	1	-59.7%

TouchableHighlight.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight native mount	1.06ms	1.03ms	±0.17ms	1	-50.7%

TouchableOpacity.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableOpacity native mount	1.15ms	1.13ms	±0.05ms	1	-63.9%

Pressable.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable native mount	1.06ms	1.02ms	±0.13ms	1	-59.4%

ScrollView.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ScrollView native mount	2.24ms	2.19ms	±0.18ms	1	-45.9%

ActivityIndicator.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ActivityIndicator native mount	0.99ms	0.89ms	±0.17ms	1	-64.0%

TextInput.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TextInput native mount	1.47ms	1.40ms	±0.18ms	1	-65.7%

Switch.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Switch native mount	0.80ms	0.77ms	±0.06ms	1	-55.5%

Button.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Button native mount	1.37ms	1.35ms	±0.15ms	1	-48.1%

Modal.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Modal native mount	0.75ms	0.73ms	±0.09ms	1	-40.1%

Image.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Image native mount	1.31ms	1.23ms	±0.27ms	1	-45.8%

View.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
View native mount	0.86ms	0.82ms	±0.20ms	1	-42.4%

Text.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text native mount	0.98ms	0.92ms	±0.16ms	1	-46.9%