.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es6: true,
    jest: true,
  },

  extends: [
    'react-app',
    'prettier/@typescript-eslint',
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
  ],
  settings: {
    react: {
      version: 'detect',
    },
    'import/parsers': {
      '@typescript-eslint/parser': ['.ts', '.tsx'],
    },
    'import/resolver': {
      node: {
        extensions: ['.js', '.jsx', '.ts', '.tsx'],
      },
      typescript: {
        alwaysTryTypes: true,
        // always try to resolve types under `<root>@types` directory even it doesn't contain any source code, like `@types/unist`
        project: ['tsconfig.json', 'server/tsconfig.json'],
      },
    },
  },
  rules: {
    'import/order': [
      'warn',
      {
        groups: [
          'builtin',
          'external',
          'internal',
          'parent',
          'sibling',
          'index',
          'object',
        ],
        'newlines-between': 'always',

        alphabetize: {
          order: 'asc',
          caseInsensitive: true,
        },
      },
    ],
  },
  parser: '@typescript-eslint/parser',
  plugins: ['react', '@typescript-eslint'],
};