fix: inability to disable hermesV1 on Android (#55399)

tjzel · meta-codesync[bot] · commit 45896674d14d · 2026-02-05T03:38:47.000-08:00
Summary: Changing the line in `ReactPlugin.kt` that always set `hermesV1Enabled` to `true` even if it was explicitly disabled, accidentally omitted in #54989. In recent update of hermes V1 binary a file `RuntimeAdapter.h` was removed. ## Changelog: [ANDROID] [FIXED] - ReactPlugin.kt always setting `hermesV1Enabled` to `true` Pull Request resolved: #55399 Test Plan: Build React Native from source on latest 0.84 RC, disable hermesV1 and see that it compiles now. Reviewed By: cipolleschi Differential Revision: D92267385 Pulled By: cortinico fbshipit-source-id: 58ecae6d3064995ef9e63ddbd67ac04db2a1126b
diff --git a/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactPlugin.kt b/packages/gradle-plugin/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactPlugin.kt
@@ -55,8 +55,8 @@ class ReactPlugin : Plugin<Project> {
                 project,
             )
 
-    if (project.rootProject.isHermesV1Enabled) {
-      rootExtension.hermesV1Enabled.set(true)
+    if (!project.rootProject.isHermesV1Enabled) {
+      rootExtension.hermesV1Enabled.set(false)
     }
 
     // App Only Configuration

Original file line number	Diff line number	Diff line change
`@@ -55,8 +55,8 @@ class ReactPlugin : Plugin<Project> {`
`55`	`55`	`project,`
`56`	`56`	`)`
`57`	`57`
`58`		`- if (project.rootProject.isHermesV1Enabled) {`
`59`		`- rootExtension.hermesV1Enabled.set(true)`
	`58`	`+ if (!project.rootProject.isHermesV1Enabled) {`
	`59`	`+ rootExtension.hermesV1Enabled.set(false)`
`60`	`60`	`}`
`61`	`61`
`62`	`62`	`// App Only Configuration`