.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
    jest: true,
  },
  extends: [
    'plugin:react/recommended',
    'airbnb',
    'plugin:security/recommended',
    'plugin:import/typescript',
    'prettier',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: 12,
    sourceType: 'module',
  },
  plugins: ['react', '@typescript-eslint', 'security'],
  rules: {
    // Airbnb ts import issue https://stackoverflow.com/questions/59265981/typescript-eslint-missing-file-extension-ts-import-extensions
    'import/extensions': [
      'error',
      'ignorePackages',
      {
        ts: 'never',
        tsx: 'never',
      },
    ],
    'no-use-before-define': 'off',
    camelcase: 'off',
    'import/prefer-default-export': 'off',
    '@typescript-eslint/no-use-before-define': 'error',
    'no-unused-vars': 'off',
    '@typescript-eslint/no-unused-vars': ['warn'],
    'react/react-in-jsx-scope': 'off',
    'react/jsx-filename-extension': ['error', { extensions: ['.tsx'] }],
    'import/no-extraneous-dependencies': ['error', { devDependencies: true }],
    'import/no-unresolved': [
      'error',
      {
        ignore: ['.svg'],
      },
    ],
    'react/function-component-definition': [
      2,
      {
        namedComponents: 'arrow-function',
        unnamedComponents: 'arrow-function',
      },
    ],
    'react/no-unstable-nested-components': ['error', { allowAsProps: true }],
    'react/prop-types': 'off', // Since we do not use prop-types
    'react/require-default-props': 'off', // Since we do not use prop-types
    'react/jsx-props-no-spreading': 'off', // This is an anti-pattern, to be removed.
    'no-param-reassign': ['error', { props: false }],
  },
  settings: {
    'import/resolver': {
      typescript: {}, // this loads <rootdir>/tsconfig.json to eslint
    },
  },
  globals: {
    React: true,
    JSX: true,
    HubSpotConversations: true,
    fetch: true,
    HeadersInit: true,
  },
  overrides: [
    {
      files: ['*.ts', '*.mts', '*.cts', '*.tsx'],
      rules: {
        'no-undef': 'off',
      },
    },
  ],
};