TS config fails to load: Missing "../dist/babel.cjs" when using jiti; falls back to defaults

[kyashrathore]

Summary
Running npx dspyground dev with a TypeScript config causes the loader to fail with “Cannot find module '../dist/babel.cjs'” and silently falls back to defaults. The dev server still starts, but the user config
is ignored.

Steps To Reproduce

• Create a TS config at apps/formcraft/dspyground.config.ts (any valid config will do).
• Run: npx dspyground dev
• Observe the warning and that defaults are used instead of the TS config.

Actual Behavior

• CLI outputs:
  • “🔍 Looking for config at: /Users/actual-file-path-here/dspyground.config.ts”
  • “Could not load user config, using defaults: Cannot find module '../dist/babel.cjs'”
  • Require stack includes .../node_modules/.pnpm/jiti@2.6.1/node_modules/jiti/lib/jiti.mjs
• App runs, but config is not applied.

Expected Behavior

• The TS config loads via the bundler/loader without requiring a missing ../dist/babel.cjs, and its settings take effect.

Environment

• dspyground: installed via npx dspyground dev on [date]
• Node:v20.19.0
• Package manager: pnpm - 9.15.9
• OS: maxOS
• Jiti version (from require stack): 2.6.1

Logs

• Full CLI output excerpt:
  • “🌐 Opening browser at http://localhost:3002...”
  • “🔍 Looking for config at: /Users/actual-file-path-here/dspyground.config.ts”
  • “⚠️ Could not load user config, using defaults: Cannot find module '../dist/babel.cjs'”
  • “Require stack:
    • /Users/karthikkalyanaraman/work/dspyground/node_modules/.pnpm/jiti@2.6.1/node_modules/jiti/lib/jiti.mjs”

Note: The absolute path to another user’s(Karthik's) home directory in the stack trace suggests a packaging/build artifact may be leaking paths or vendored deps.

[karthikscale3]

Hi @kyashrathore , thanks for reporting. This issue is fixed in 0.3.10. Please upgrade and let me know if you are still facing it.

[kamal]

@karthikscale3 this doesn't seem to be fixed

kamal@kmahyuddin-mbp envoy-mcp % npx dspyground@latest dev
Need to install the following packages:
dspyground@0.3.10
Ok to proceed? (y)

🚀 Starting DSPyGround server...

📂 Data directory: /Users/kamal/src/envoy-mcp/.dspyground/data
⚙️  Config: /Users/kamal/src/envoy-mcp/dspyground.config.ts
🌐 Server will start on: http://localhost:3000

🚀 Running production server

   ▲ Next.js 15.5.3
   - Local:        http://localhost:3000
   - Network:      http://0.0.0.0:3000

 ✓ Starting...
 ✓ Ready in 90ms

🌐 Opening browser at http://localhost:3000...

🔍 Looking for config at: /Users/kamal/src/envoy-mcp/dspyground.config.ts
⚠️  Could not load user config, using defaults: Cannot find module '../dist/babel.cjs'
Require stack:
- /Users/karthikkalyanaraman/work/dspyground/node_modules/.pnpm/jiti@2.6.1/node_modules/jiti/lib/jiti.mjs

[karthikscale3]

Thanks for sharing the snippet. Let me dig deeper and update soon.