Expose DevSettings.openDebugger method to JS

packages/react-native/React/CoreModules/RCTDevSettings.mm

@@ -501,6 +501,15 @@ - (void)setupHMRClientWithAdditionalBundleURL:(NSURL *)bundleURL
   }
 }
 
+RCT_EXPORT_METHOD(openDebugger)
+{
+#ifdef RCT_ENABLE_INSPECTOR
+  [RCTInspectorDevServerHelper
+          openDebugger:self.bundleManager.bundleURL
+      withErrorMessage:@"Failed to open debugger. Please check that the dev server is running and reload the app."];
+#endif
+}
+
 #pragma mark - Internal
 
 /**
@@ -608,6 +617,9 @@ - (void)setupHMRClientWithBundleURL:(NSURL *)bundleURL
 - (void)setupHMRClientWithAdditionalBundleURL:(NSURL *)bundleURL
 {
 }
+- (void)openDebugger
+{
+}
 - (void)addMenuItem:(NSString *)title
 {
 }

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/debug/DevSettingsModule.kt

@@ -61,6 +61,10 @@ public class DevSettingsModule(
     }
   }
 
+  override fun openDebugger() {
+    devSupportManager.openDebugger()
+  }
+
   override fun setIsShakeToShowDevMenuEnabled(enabled: Boolean) {
     // iOS only
   }

packages/react-native/src/private/specs/modules/NativeDevSettings.js

@@ -21,6 +21,7 @@ export interface Spec extends TurboModule {
   +setProfilingEnabled: (isProfilingEnabled: boolean) => void;
   +toggleElementInspector: () => void;
   +addMenuItem: (title: string) => void;
+  +openDebugger?: () => void;
 
   // Events
   +addListener: (eventName: string) => void;