.eslintrc.js

module.exports = {
  env: {
    node: true,
    browser: true,
    jest: true,
  },
  extends: [
    'airbnb',
    'plugin:@typescript-eslint/recommended',
    'plugin:import/errors',
    'plugin:import/warnings',
    'plugin:import/typescript',
    'plugin:prettier/recommended',
    'prettier/@typescript-eslint',
    'plugin:jest/recommended',
    'plugin:jest-dom/recommended',
    'plugin:testing-library/react',
  ],
  overrides: [
    {
      files: ['*.{ts,tsx,js,jsx}'],
    },
  ],
  settings: {
    'import/parsers': {
      '@typescript-eslint/parser': ['.ts', '.tsx'],
    },
    'import/resolver': {
      typescript: {},
    },
  },
  rules: {
    'import/extensions': [
      'error',
      'ignorePackages',
      {
        ts: 'never',
        tsx: 'never',
        js: 'never',
        jsx: 'never',
        mjs: 'never',
      },
    ],
    'react/jsx-filename-extension': [
      1,
      { extensions: ['.js', '.jsx', '.ts', '.tsx'] },
    ],
    'spaced-comment': ['error', 'always', { markers: ['/'] }],
    'import/no-unresolved': [
      'error',
      { ignore: ['express-serve-static-core'] },
    ],
    'import/prefer-default-export': 0,
    'no-underscore-dangle': ['error', { allow: ['_id'] }],
    'no-unused-vars': 'off',
    '@typescript-eslint/no-unused-vars': ['error'],
    camelcase: 0,
    '@typescript-eslint/naming-convention': [
      'error',
      {
        selector: 'default',
        format: ['camelCase'],
        leadingUnderscore: 'forbid',
        trailingUnderscore: 'forbid',
        filter: {
          regex: '^(oauth_token|access_token|Content-Type|_id|__esModule)$',
          match: false,
        },
      },
      {
        selector: 'variable',
        format: ['camelCase', 'UPPER_CASE', 'PascalCase'],
        leadingUnderscore: 'forbid',
        trailingUnderscore: 'forbid',
      },
      {
        selector: 'typeLike',
        format: ['PascalCase'],
      },
    ],
    'react/jsx-wrap-multilines': 0,
    'jsx-a11y/anchor-is-valid': 0,
    'react/prop-types': 0,
  },
};