reactjs - ESLint unused variable (React) - Stack Overflow

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Why is ESLint constantly complaining about unused react prop, this code doesn't have any issue. Works as expected. The "Icon" prop is used withing the code.

const PageLink = ({ icon: Icon, title, ...props }) => (
  <Link
    {...props}
    className={cn(
      "p-2 rounded-xl bg-neutral-100 dark:bg-neutral-800 text-center",
      "flex gap-2 justify-center items-center"
    )}
  >
    <Icon className="size-4" />
    {title}
  </Link>
);

Below is the ESLint config file, it was generated by Vite. Not changed at all, just using the default.

import js from '@eslint/js'
import globals from 'globals'
import reactHooks from 'eslint-plugin-react-hooks'
import reactRefresh from 'eslint-plugin-react-refresh'

export default [
  { ignores: ['dist'] },
  {
    files: ['**/*.{js,jsx}'],
    languageOptions: {
      ecmaVersion: 2020,
      globals: globals.browser,
      parserOptions: {
        ecmaVersion: 'latest',
        ecmaFeatures: { jsx: true },
        sourceType: 'module',
      },
    },
    plugins: {
      'react-hooks': reactHooks,
      'react-refresh': reactRefresh,
    },
    rules: {
      ...js.configs.recommended.rules,
      ...reactHooks.configs.recommended.rules,
      'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
      'react-refresh/only-export-components': [
        'warn',
        { allowConstantExport: true },
      ],
    },
  },
]

Why is ESLint constantly complaining about unused react prop, this code doesn't have any issue. Works as expected. The "Icon" prop is used withing the code.

const PageLink = ({ icon: Icon, title, ...props }) => (
  <Link
    {...props}
    className={cn(
      "p-2 rounded-xl bg-neutral-100 dark:bg-neutral-800 text-center",
      "flex gap-2 justify-center items-center"
    )}
  >
    <Icon className="size-4" />
    {title}
  </Link>
);

Below is the ESLint config file, it was generated by Vite. Not changed at all, just using the default.

import js from '@eslint/js'
import globals from 'globals'
import reactHooks from 'eslint-plugin-react-hooks'
import reactRefresh from 'eslint-plugin-react-refresh'

export default [
  { ignores: ['dist'] },
  {
    files: ['**/*.{js,jsx}'],
    languageOptions: {
      ecmaVersion: 2020,
      globals: globals.browser,
      parserOptions: {
        ecmaVersion: 'latest',
        ecmaFeatures: { jsx: true },
        sourceType: 'module',
      },
    },
    plugins: {
      'react-hooks': reactHooks,
      'react-refresh': reactRefresh,
    },
    rules: {
      ...js.configs.recommended.rules,
      ...reactHooks.configs.recommended.rules,
      'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
      'react-refresh/only-export-components': [
        'warn',
        { allowConstantExport: true },
      ],
    },
  },
]

• reactjs
• visual-studio-code
• eslint

Share Improve this question Follow edited Mar 14 at 7:44 Sadiq Salau asked Mar 14 at 5:48 Sadiq SalauSadiq Salau 12966 bronze badges 2

• 1 You must have a eslint config file, where you would have configured an error for this. Search for something like this no-unused-vars or please share the file here – Tushar Shahi Commented Mar 14 at 6:06
• @TusharShahi i have updated it – Sadiq Salau Commented Mar 14 at 7:45

Add a comment  | 

1 Answer 1

Sorted by: Reset to default 0

Given your eslint file, you have the rule:

'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],

which means throw an error when there are unused variables.

Just remove that key from the object and you should be good.

Rule def

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