cli: flip repo command help options to use --jest-help instead

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/cli/src/commands/index.ts

@@ -80,7 +80,10 @@ export function registerRepoCommand(program: Command) {
       '--since <ref>',
       'Only test packages that changed since the specified ref',
     )
-    .helpOption(', --backstage-cli-help') // Let Jest handle help
+    .option(
+      '--jest-help',
+      'Show help for Jest CLI options, which are passed through',
+    )
     .description('Run tests, forwarding args to Jest, defaulting to watch mode')
     .action(lazy(() => import('./repo/test').then(m => m.command)));
 }

packages/cli/src/commands/repo/test.ts

@@ -118,7 +118,9 @@ export async function command(opts: OptionValues, cmd: Command): Promise<void> {
   }
 
   // This ensures that the process doesn't exit too early before stdout is flushed
-  if (args.includes('--help')) {
+  if (args.includes('--jest-help')) {
+    removeOptionArg(args, '--jest-help');
+    args.push('--help');
     (process.stdout as any)._handle.setBlocking(true);
   }