Title: Warning when installing TypeScript-related modules – @types/eslint__js deprecated

[akippiko]

Hi scott,

While setting up a TypeScript-based LWC project in Illuminated Cloud, I encountered a warning during dependency installation.

After I created the project and started using TypeScript, I saw a notification (probably from WebStorm or the IDE itself) asking something like "Install TypeScript modules?" — I accepted it, and then ran this command suggested in some guides:

npm install --save-dev --legacy-peer-deps globals @types/node @types/jest @sa11y/jest typescript eslint eslint-plugin-import eslint-import-resolver-typescript @eslint/eslintrc @eslint/js @types/eslint__js typescript-eslint @typescript-eslint/eslint-plugin @typescript-eslint/parser @salesforce/sfdx-lwc-jest@latest

Then I got this warning:

npm WARN deprecated @types/eslin...@9.14.0: This is a stub types definition. @eslint/js provides its own type definitions, so you do not need this installed.

After looking into it, I found that @eslint/js already includes its own type definitions, and @types/eslint__js is now deprecated and unnecessary.

✅ Solution:
Just remove @types/eslint__js from the installation command:

npm install --save-dev --legacy-peer-deps \ globals \ @types/node \ @types/jest \ @sa11y/jest \ typescript \ eslint \ eslint-plugin-import \ eslint-import-resolver-typescript \ @eslint/js \ typescript-eslint \ @typescript-eslint/eslint-plugin \ @typescript-eslint/parser \ @salesforce/sfdx-lwc-jest@latest

This resolved the warning for me, and everything is working fine so far.

Hope this helps others who run into the same issue!