Cannot find type definition file for 'jest'

Description

In a very minimal package declaring a dependency on react-native and the @react-native/typescript-config (such as a very simple library), extending the @react-native/typescript-config yields:

error TS2688: Cannot find type definition file for 'jest'.
  The file is in the program because:
    Entry point of type library 'jest' specified in compilerOptions

This happens because the tsconfig declares "types": ["jest"], while neither "react-native" nor "@react-native/typescript-config" declare a dependency on neither jest nor @types/jest.

I'd suggest moving the "types": ["jest"], to the template's tsconfig: https://github.com/react-native-community/template/blob/d2a0bee199b49611ee252dd5d7626f10a714bebd/template/tsconfig.json#L2 since that's the package bringing the jest dependency.

Steps to reproduce

Init a new package with this package.json

{
  "name": "react-native-ts-test",
  "private": true,
  "version": "0.1.0",
  "scripts": {
    "build": "tsc --noEmit"
  },
  "devDependencies": {
    "@react-native/typescript-config": "^0.81.1",
    "typescript": "^5.9.2"
  },
  "dependencies": {
    "react-native": "^0.81.1"
  }
}

and this tsconfig.json

{
  "extends": "@react-native/typescript-config",
  "include": ["src/index.ts"]
}

Run npx tsc --noEmit 💥

error TS2688: Cannot find type definition file for 'jest'.
  The file is in the program because:
    Entry point of type library 'jest' specified in compilerOptions

React Native Version

0.81.1

Affected Platforms

Build - MacOS, Build - Windows, Build - Linux

Output of npx @react-native-community/cli info

N/A

Stacktrace or Logs

error TS2688: Cannot find type definition file for 'jest'.
  The file is in the program because:
    Entry point of type library 'jest' specified in compilerOptions

MANDATORY Reproducer

https://github.com/react-native-community/reproducer-react-native

Screenshots and Videos

packages/typescript-config/tsconfig.json と、リンク先のテンプレートの tsconfig.json および package.json ファイルを比較して、Jest の型がどこで想定されているかを確認します。最小限の再現例で npx tsc --noEmit を実行し、その後、Jest の依存関係がないパッケージでも設定が機能し、テンプレートのセットアップも引き続きサポートされることを確認します。