The Next.js plugin was not detected in your ESLint configuration

[stackerito]

I tried to follow the docs as best as possible, but now when I run npm run build I get the following message:

warn - The Next.js plugin was not detected in your ESLint
configuration. See
https://nextjs.org/docs/basic-features/eslint#migrating-existing-config

This is the package.json:

{
  "private": true,
  "scripts": {
    "dev": "next dev",
    "build": "next build",
    "start": "next start",
    "lint": "next lint"
  },
  "dependencies": {
    "next": "latest",
    "react": "^17.0.2",
    "react-dom": "^17.0.2"
  },
  "devDependencies": {
    "@next/eslint-plugin-next": "^11.1.0",
    "autoprefixer": "^10.2.6",
    "eslint": "^7.32.0",
    "eslint-config-next": "11.1.0",
    "eslint-plugin-react": "^7.24.0",
    "postcss": "^8.3.5",
    "tailwindcss": "^2.2.4"
  }
}

This is the .eslintrc.json:

{
  "extends": "next/core-web-vitals"
}

This is .eslinrc.js:

module.exports = {
    "env": {
        "browser": true,
        "es2021": true
    },
    "extends": [
        "eslint:recommended",
        "plugin:react/recommended"
    ],
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "ecmaVersion": 12,
        "sourceType": "module"
    },
    "plugins": [
        "react"
    ],
    "rules": {
    }
};

Do you see anything wrong here?

[thibautsabot]

Hello !
I don't think you need both .eslintrc.json and .eslinrc.js.
In fact it might be the root cause of your issue.

The second file seems to override the first.

If you get rid of .eslintrc.json to only keep .eslinrc.js and add the next plugin at the end like :

"env": {
        "browser": true,
        "es2021": true
    },
    "extends": [
        "eslint:recommended",
        "plugin:react/recommended",
      	"next/core-web-vitals"
    ],
 ...

it should fix your problem.

[stackerito]

Thank you, that worked!

[beatrixbee]

Thanks you very much

[qwikag]

Can I ask that the above answer be fixed to include the correct file naming; and the file locations of these config files?
I need this answer but it does not provide enough info when I do not have these files in the first place, yet I have the same error.