first commit

node_modules/@react-navigation/native/lib/module/useBackButton.native.js

@@ -0,0 +1,21 @@
+"use strict";
+
+import * as React from 'react';
+import { BackHandler } from 'react-native';
+export function useBackButton(ref) {
+  React.useEffect(() => {
+    const subscription = BackHandler.addEventListener('hardwareBackPress', () => {
+      const navigation = ref.current;
+      if (navigation == null) {
+        return false;
+      }
+      if (navigation.canGoBack()) {
+        navigation.goBack();
+        return true;
+      }
+      return false;
+    });
+    return () => subscription.remove();
+  }, [ref]);
+}
+//# sourceMappingURL=useBackButton.native.js.map