[Bug]: peer dependency error with eslint@9

[johnhunter]

Is there an existing issue for this?

• I have searched the existing issues and my issue is unique
• My issue appears in the command-line and not only in the text editor

Description Overview

We support eslint@9 but the peerDependencies do not include it. This causes npm import failure when using current npm versions.

Steps to repro:

1. Update to eslint@9
2. Install [email protected]
3. Examine the console output

Expected:
eslint-plugin-react install ok

Actual:
eslint-plugin-react install fails with

npm ERR! Could not resolve dependency:
npm ERR! peer eslint@"^3 || ^4 || ^5 || ^6 || ^7 || ^8" from [email protected]
npm ERR! node_modules/eslint-plugin-react
npm ERR!   dev eslint-plugin-react@"7.34.1" from the root project

Environment:
node: v20.12.2
npm: 10.5.0

The fail will downgrade to a warning if npm legacy-peer-deps is used, but we should address the root cause.

Expected Behavior

eslint-plugin-react should install ok

eslint-plugin-react version

v7.34.1

eslint version

v9.0.0

node version

v20.12.2

[ljharb]

Please wait to file PRs until a maintainer tells you it's desired. Your PR is a duplicate of #3726, and this issue is a duplicate of #3699.