Library project tsconfig errors - module value, overwrite input file

[hyunbinseo]

Describe the bug

Out-of-the box, two errors occur in the tsconfig.json file.

Cannot write file '/src/lib/index.js' because it would overwrite input file. // ts

1. Provided index.ts instead of index.js if TypeScript is selected.
2. Related: Svelte kit demo project tsconfig errors #9552

Option 'module' must be set to 'NodeNext' when option 'moduleResolution' is set to 'NodeNext'. // ts

1. The documentation does mention setting "moduleResolution": "NodeNext" in the caveats section.

Reproduction

pnpm create svelte@latest

create-svelte version 5.1.1

┌  Welcome to SvelteKit!
│
◇  Where should we create your project?
│  [email protected]
│
◇  Which Svelte app template?
│  Library project
│
◇  Add type checking with TypeScript?
│  Yes, using TypeScript syntax
│
◇  Select additional options (use arrow keys/space bar)
│  none
│
└  Your project is ready!

• Open the workspace in VS Code.

pnpm i
pnpm check

• Reload VS Code Window
• Open src/lib/index.js
• Open tsconfig.json -- 1st error message is shown
• Rename to src/lib/index.ts
• Open tsconfig.json -- 2nd error message is shown

Logs

No response

System Info

System:
  OS: macOS 14.0
  CPU: (10) arm64 Apple M1 Pro
  Memory: 60.42 MB / 16.00 GB
  Shell: 5.9 - /bin/zsh
Binaries:
  Node: 20.8.1 - ~/Library/pnpm/node
  npm: 10.1.0 - ~/Library/pnpm/npm
  pnpm: 8.10.2 - ~/Library/pnpm/pnpm
Browsers:
  Chrome: 119.0.6045.123
  Edge: 119.0.2151.58
  Safari: 17.0
npmPackages:
  @sveltejs/adapter-auto: ^2.0.0 => 2.1.1 
  @sveltejs/kit: ^1.20.4 => 1.27.5 
  @sveltejs/package: ^2.0.0 => 2.2.2 
  svelte: ^4.0.5 => 4.2.3 
  vite: ^4.4.2 => 4.5.0

Severity

annoyance

Additional Information

No response

[eltigerchino]

I can't reproduce this issue given the reproduction steps. Can you re-confirm the issue?

[hyunbinseo]

I've updated the reproduction steps.