.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2020: true,
  },
  extends: [
    'plugin:react/recommended',
    'airbnb',
  ],
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: 11,
    sourceType: 'module',
  },
  plugins: [
    'react',
  ],
  rules: {
    'react/jsx-filename-extension': [1, { extensions: ['.js', '.jsx'] }], // Support for JSX in JS ( in index.js )
    'no-param-reassign': 0, // Changed the parameter directly
    'max-len': 0, // Max Line Length
    'no-plusplus': ['error', { allowForLoopAfterthoughts: true }], // Allow i++ in loops
    'brace-style': ['error', 'stroustrup', { allowSingleLine: true }], // Allow if/else in single line
    'jsx-a11y/no-onchange': 0, // Allow onChange (instead of onBlur)
    'no-nested-ternary': 0, // Allow nested ternary
    'import/no-extraneous-dependencies': ['error', { devDependencies: ['**/*.test.js', '**/*.spec.js', '**/*.test.jsx', '**/*setupTests.js'] }], // For JEST/Enzyme
  },
};