.eslintrc.js

module.exports = {
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:jest/recommended',
    'prettier',
    'plugin:prettier/recommended',
    'plugin:react/recommended',
    'plugin:import/recommended',
    'plugin:import/typescript',
  ],
  plugins: ['react', '@typescript-eslint', 'jest', 'import'],
  env: {
    browser: true,
    es6: true,
    jest: true,
  },
  globals: {
    Atomics: 'readonly',
    SharedArrayBuffer: 'readonly',
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: 2018,
    sourceType: 'module',
    project: './tsconfig.json',
  },
  ignorePatterns: ['.eslintrc.js'],
  settings: {
    'import/resolver': {
      node: {
        paths: ['./src'],
      },
    },
  },
  rules: {
    'linebreak-style': 'off',
    'prettier/prettier': [
      'error',
      {
        endOfLine: 'auto',
      },
    ],
    'import/order': [
      'error',
      {
        groups: [['builtin', 'external'], 'internal', 'parent', 'sibling', 'index'],
        pathGroups: [
          {
            pattern: 'react',
            group: 'external',
            position: 'before',
          },
        ],
        pathGroupsExcludedImportTypes: ['react'],
        'newlines-between': 'always',
        alphabetize: {
          order: 'asc',
          caseInsensitive: true,
        },
      },
    ],
    'sort-imports': [
      'error',
      {
        ignoreCase: false,
        ignoreDeclarationSort: true,
        ignoreMemberSort: false,
        memberSyntaxSortOrder: ['all', 'single', 'multiple', 'none'],
      },
    ],
    'import/newline-after-import': ['error', { count: 1 }],
    'no-param-reassign': ['error', { props: true, ignorePropertyModificationsFor: ['state'] }],
  },
};