.eslintrc.js

const fs = require('fs');
const path = require('path');

const prettierOptions = JSON.parse(
  fs.readFileSync(path.resolve(__dirname, '.prettierrc'), 'utf8'),
);

module.exports = {
  extends: ['react-app', 'prettier', 'prettier/react'],
  plugins: ['prettier'],
  rules: {
    'prettier/prettier': ['error', prettierOptions],
    'array-element-newline': [
      'error',
      {
        ArrayExpression: 'consistent',
      },
    ],
    'object-curly-spacing': ['warn', 'always'],
    'no-unused-vars': [
      'warn',
      {
        vars: 'all',
        args: 'none',
      },
    ],
    '@typescript-eslint/no-unused-vars': [
      'warn',
      {
        vars: 'all',
        args: 'none',
      },
    ],
    '@typescript-eslint/no-explicit-any': [
      'warn',
      {
        ignoreRestArgs: true,
      },
    ],
    'max-params': ['error', 3],
    'max-lines': [
      'error',
      { max: 160, skipBlankLines: true, skipComments: true },
    ],
    'max-len': [
      'warn',
      {
        code: 80,
        ignoreStrings: true,
        ignoreTemplateLiterals: true,
        ignoreComments: true,
      },
    ],
    'no-plusplus': [
      'error',
      {
        allowForLoopAfterthoughts: true,
      },
    ],
    'react/jsx-key': 'error',
    'react/jsx-uses-react': 'off',
    'react/react-in-jsx-scope': 'off',
    'react/button-has-type': 'off',
    'import/no-extraneous-dependencies': [
      'error',
      {
        devDependencies: [
          '**/*.test.js',
          '**/*.test.jsx',
          '**/*.test.ts',
          '**/*.test.tsx',
          'src/setupTests.ts',
          'src/serviceWorker.ts',
          'src/tests/**/*',
        ],
      },
    ],
    'react/jsx-props-no-spreading': 'off',
    'import/prefer-default-export': 'off',
    'react/jsx-boolean-value': 'off',
    'react/prop-types': 'off',
    'react/no-unescaped-entities': 'off',
    'react/jsx-one-expression-per-line': 'off',
    'react/jsx-wrap-multilines': 'off',
    'react/destructuring-assignment': 'off',
    'react/no-array-index-key': 'warn',
    'no-duplicate-imports': ['error', { includeExports: true }],
    'func-style': ['error', 'expression'],
    quotes: ['error', 'single', { allowTemplateLiterals: true }],
    '@typescript-eslint/comma-dangle': ['off'],
    'jsx-a11y/click-events-have-key-events': 0,
    'jsx-a11y/no-static-element-interactions': ['off'],
  },
  overrides: [
    {
      files: ['**/*.ts?(x)'],
      rules: { 'prettier/prettier': ['warn', prettierOptions] },
    },
  ],
};