Fix defaulting type errors

Author: kitten

packages/react-native/scripts/codegen/generate-artifacts-executor/index.js

@@ -229,10 +229,18 @@ function computeOutputPath(
     return baseOutputPath;
   }
   if (platform === 'android') {
-    return defaultOutputPathForAndroid(baseOutputPath);
+    return defaultOutputPathForAndroid(
+      baseOutputPath != null && baseOutputPath.length > 0
+        ? baseOutputPath
+        : projectRoot,
+    );
   }
   if (platform === 'ios') {
-    return defaultOutputPathForIOS(baseOutputPath);
+    return defaultOutputPathForIOS(
+      baseOutputPath != null && baseOutputPath.length > 0
+        ? baseOutputPath
+        : projectRoot,
+    );
   }
   return baseOutputPath;
 }

packages/react-native/scripts/codegen/generate-artifacts-executor/utils.js

@@ -104,7 +104,9 @@ function readGeneratedAutolinkingOutput(
   // NOTE: Generated by scripts/cocoapods/autolinking.rb in list_native_modules (called by use_native_modules)
   // The `baseOutputPath` is based on a CLI argument and optional
   const autolinkingGeneratedPath = path.resolve(
-    baseOutputPath || projectRoot,
+    baseOutputPath != null && baseOutputPath.length > 0
+      ? baseOutputPath
+      : projectRoot,
     'build/generated/autolinking/autolinking.json',
   );
   if (fs.existsSync(autolinkingGeneratedPath)) {