Removing `@types/eslint` as peer dependency

[brettz9]

Hi,

We (at eslint-plugin-jsdoc) have installed a package (eslint-config-canonical) which depends on eslint-plugin-prettier, but its presence in our dependencies is causing TypeScript errors apparently as a result of your package's inclusion of @types/eslint as a peer dependency.

In ESLint 9, @types/eslint is no longer needed, with ESLint having its own types, and indeed its presence can cause conflicts when other packages are trying to rely on the types of up-to-date ESLint 9.

Would you be able to remove this from peerDependencies? I think ESLint 8 users should be able to still manually install @types/eslint if this is an issue for them.

Thanks!

[JounQin]

Isn't @types/eslint already an optional peer dependency already?

[brettz9]

Yes, but one has to install with a specific directive or otherwise peer dependencies are now typically automatically installed.

[JounQin]

If @types/eslint v9 is intended not to be used, it should be deprecated and marked as unneeded, so that it should be an empty package like https://www.npmjs.com/package/@types/uuid

So I believe there is something wrong with @types/eslint which is already remove in DefinitelyTyped but not included in https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/notNeededPackages.json.

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related DefinitelyTyped/DefinitelyTyped#70735