Update scripts/release.js

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: allenhutchison

scripts/release.js

@@ -28,6 +28,12 @@ const deleteFilesByExtension = (dir, ext) => {
 
 const main = async () => {
   const platform = argv.platform;
+  if (platform && typeof platform !== 'string') {
+    console.error(
+      'Error: The --platform argument must be a string (e.g., --platform=linux).'
+    );
+    process.exit(1);
+  }
   const baseName = 'google-workspace-extension';
   const name = platform ? `${platform}.${baseName}` : baseName;
   const extension = 'tar.gz';