.eslintrc.js

module.exports = {
  extends: [
    'airbnb',
    'prettier',
    'plugin:react/recommended',
    'plugin:markdown/recommended',
  ],
  env: {
    browser: true,
    node: true,
    jasmine: true,
    jest: true,
    es6: true,
  },
  settings: {
    react: {
      version: '16.9',
    },
  },
  parser: '@babel/eslint-parser',
  parserOptions: {
    requireConfigFile: true,
    parser: '@babel/eslint-parser',
  },
  plugins: ['react', 'babel', 'react-hooks', 'markdown'],
  overrides: [
    {
      // In v2, explicitly apply eslint-plugin-markdown's `markdown`
      // processor on any Markdown files you want to lint.
      files: ['components/*/demo/*.md'],
      processor: 'markdown/markdown',
    },
  ],
  rules: {
    'semi': 0,
    'react/jsx-one-expression-per-line': 0,
    'react/prop-types': 0,
    'react/forbid-prop-types': 0,
    'react/jsx-indent': 0,
    'react/jsx-wrap-multilines': ['error', { declaration: false, assignment: false }],
    'react/state-in-constructor': 0,
    'react/jsx-props-no-spreading': 0,
    'react/destructuring-assignment': 0, // TODO: remove later
    'react/require-default-props': 0,
    'react/sort-comp': 0,
    'react/display-name': 0,
    'react/static-property-placement': 0,
    'react/no-find-dom-node': 0,
    'react/no-unused-prop-types': 0,
    'react/default-props-match-prop-types': 0,
    'react-hooks/rules-of-hooks': 2, // Checks rules of Hooks

    'import/prefer-default-export': 0,
    'import/extensions': 0,
    'import/no-cycle': 0,
    'react/jsx-filename-extension': [2, { 'extensions': ['.js', '.jsx', '.ts', '.tsx'] }],
    'import/no-extraneous-dependencies': [
      'error',
      {
        devDependencies: [
          'site/**',
          'tests/**',
          'scripts/**',
          '**/*.test.js',
          '**/__tests__/*',
          '*.config.js',
          '**/*.md',
        ],
      },
    ],
    'jsx-a11y/no-static-element-interactions': 0,
    'jsx-a11y/anchor-has-content': 0,
    'jsx-a11y/click-events-have-key-events': 0,
    'jsx-a11y/anchor-is-valid': 0,
    'jsx-a11y/no-noninteractive-element-interactions': 0,
    // label-has-for has been deprecated
    // https://github.com/evcohen/eslint-plugin-jsx-a11y/blob/master/docs/rules/label-has-for.md
    'jsx-a11y/label-has-for': 0,

    'comma-dangle': [0, 'always-multiline'],
    'consistent-return': 0, // TODO: remove later
    'no-param-reassign': 0, // TODO: remove later
    'no-underscore-dangle': 0,
    // for (let i = 0; i < len; i++)
    'no-plusplus': 0,
    // https://eslint.org/docs/rules/no-continue
    // labeledLoop is conflicted with `eslint . --fix`
    'no-continue': 0,
    // ban this for Number.isNaN needs polyfill
    'no-restricted-globals': 0,
    'max-classes-per-file': 0,

    // https://github.com/typescript-eslint/typescript-eslint/issues/2540#issuecomment-692866111
    'no-use-before-define': 0,
    'no-shadow': 0,
    // https://github.com/typescript-eslint/typescript-eslint/issues/2528#issuecomment-689369395
    'no-undef': 0,
    'no-console': ['warn', { allow: ['warn', 'error'] }],
    'no-unused-expressions': 'warn',
    'react/no-did-update-set-state': 'warn',
    'react/no-unused-state': 'warn',
    'jsx-a11y/label-has-associated-control': 'warn',
    'no-bitwise': 0,
    'import/no-unresolved': 0,
    'operator-assignment': 0,
    'quotes': ['error', 'single'],
  },
  globals: {
    gtag: true,
  },
}