[Bug]: sparkling java path verification missed undefined

[wwxiaoqi]

Preflight checklist

• I searched existing issues to avoid duplicates.
• I can reproduce this issue on the latest main (or have provided the exact version/commit below).

Component

packages/sparkling-cli

What happened?

PS D:\200_Projects\my-app> npm install -D --save-exact sparkling-app-cli@2.1.0-rc.33

up to date in 731ms

139 packages are looking for funding
  run `npm fund` for details
npm warn allow-scripts 1 package has install scripts not yet covered by allowScripts:
npm warn allow-scripts   core-js@3.47.0 (install: (install scripts present))
npm warn allow-scripts
npm warn allow-scripts Run `npm approve-scripts --allow-scripts-pending` to review, or `npm approve-scripts <pkg>` to allow.
PS D:\200_Projects\my-app> 
PS D:\200_Projects\my-app> npx sparkling doctor                                     

Sparkling Doctor
================

General:
  [✓] Node.js 24.18.0 (required: ^22 || ^24)
D:\200_Projects\my-app\node_modules\sparkling-app-cli\dist\commands\doctor\checks.js:79
            const text = typeof stderr === 'string' ? stderr.trim() : stderr.toString('utf8').trim();
                                                                             ^

TypeError: Cannot read properties of undefined (reading 'toString')
    at getJavaVersionOutput (D:\200_Projects\my-app\node_modules\sparkling-app-cli\dist\commands\doctor\checks.js:79:78)
    at checkJdk (D:\200_Projects\my-app\node_modules\sparkling-app-cli\dist\commands\doctor\checks.js:137:20)
    at doctor (D:\200_Projects\my-app\node_modules\sparkling-app-cli\dist\commands\doctor\index.js:66:51)
    at Command.<anonymous> (D:\200_Projects\my-app\node_modules\sparkling-app-cli\dist\index.js:143:31)
    at Command.listener [as _actionHandler] (D:\200_Projects\my-app\node_modules\commander\lib\command.js:542:17)
    at D:\200_Projects\my-app\node_modules\commander\lib\command.js:1502:14
    at Command._chainOrCall (D:\200_Projects\my-app\node_modules\commander\lib\command.js:1386:12)
    at Command._parseCommand (D:\200_Projects\my-app\node_modules\commander\lib\command.js:1501:27)
    at D:\200_Projects\my-app\node_modules\commander\lib\command.js:1265:27
    at Command._chainOrCall (D:\200_Projects\my-app\node_modules\commander\lib\command.js:1386:12)

Node.js v24.18.0
PS D:\200_Projects\my-app>

Steps to reproduce

On a Windows device without a JDK environment:

1. npm install -D --save-exact sparkling-app-cli@2.1.0-rc.33
2. npx sparkling doctor

Expected behavior

D:\200_Projects\my-app>npx sparkling doctor

Sparkling Doctor
================

General:
  [✓] Node.js 24.18.0 (required: ^22 || ^24)

Android:
  [✗] JDK (required: >= 11) — Java is not installed or not found in PATH
  [✓] Android SDK C:\Users\XXXXXXXX\AppData\Local\Android\Sdk
  [✓] adb 1.0.41

iOS:
  [-] Xcode — Not on macOS — Xcode check skipped
  [-] CocoaPods — Not on macOS — CocoaPods check skipped
  [-] iOS Simulator — Not on macOS — iOS Simulator check skipped

────────────────────────────────────────
1 issue found.

To fix them, copy the following prompt into your Coding Agent (e.g. Cursor):

┌─────────────────────────────────────────────────────────────────────────────┐
│  My Sparkling project environment has the following issues:                 │
│  1. Java (JDK) is not installed. I need JDK 11 or higher.                   │
│  Please help me fix my environment so I can build and run a Sparkling app.  │
└─────────────────────────────────────────────────────────────────────────────┘


D:\200_Projects\my-app>

Actual behavior

~

Logs / screenshots

Environment

• Host OS: Windows
• Target platform (Android/iOS): ~
• Node.js version: 24.18.0
• pnpm version: ~
• Lynx version: ~
• Sparkling version / commit: 2.1.0-rc.33

Contribution

• I’m willing to submit a PR to fix this.