.eslintrc.js

module.exports = {
  'env': {
    'browser': true,
    'es6': true
  },
  'extends': [
    'eslint:recommended',
    'plugin:react/recommended'
  ],
  'parser': 'babel-eslint',
  'parserOptions': {
    'sourceType': 'module',
    'allowImportExportEverywhere': false
  },
  'plugins': [
    'babel',
    'react',
  ],
  'rules': {
    // Possible Errors
    'no-template-curly-in-string': 'error',
    'no-unsafe-negation': 'error',

    // Best Practices
    'array-callback-return': 'error',
    'consistent-return': 'error',
    'curly': 'error',
    'guard-for-in': 'error',
    'no-alert': 'error',
    'no-caller': 'error',
    'no-eval': 'error',
    'no-extra-bind': 'error',
    'no-extend-native': 'error',
    'no-extra-label': 'error',
    'no-global-assign': 'error',
    'no-implicit-globals': 'error',
    'no-implied-eval': 'error',
    'no-iterator': 'error',
    'no-multi-spaces': 'error',
    'no-new-func': 'error',
    'no-new-wrappers': 'error',
    'no-proto': 'error',
    'no-self-compare': 'error',
    'no-sequences': 'error',
    'no-shadow-restricted-names': 'error',
    'no-throw-literal': 'error',
    'no-useless-concat': 'error',
    'no-useless-escape': 'error',
    'no-with': 'error',
    'strict': ['error', 'safe'],
    'wrap-iife': ['error', 'any'],

    // Stylistic
    'block-spacing': 'error',
    'brace-style': ['error', '1tbs', { 'allowSingleLine': true }],
    'comma-spacing': ['error', { 'before': false, 'after': true }],
    'computed-property-spacing': ['error', 'never'],
    'eol-last': 'error',
    'func-call-spacing': ['error', 'never'],
    'indent': ['error', 2, { SwitchCase: 1 }],
    'jsx-quotes': ['error', 'prefer-double'],
    'keyword-spacing': 'error',
    // TODO this is ok from CLI, but not in Sublime (opposite result!)
    // 'linebreak-style': ['error', 'windows'],
    'no-array-constructor': 'error',
    'no-lonely-if': 'error',
    'no-trailing-spaces': 'error',
    'no-unneeded-ternary': 'error',
    'no-whitespace-before-property': 'error',
    'quotes': ['error', 'single'],
    'semi': ['error', 'always'],
    'semi-spacing': ['error', {'before': false, 'after': true}],
    'space-before-blocks': 'error',
    'space-in-parens': ['error', 'never'],
    // TODO es6 default params not supported :(
    'space-infix-ops': 'off',
    'space-unary-ops': ['error', { 'words': true, 'nonwords': false }],

    // ES6
    'no-useless-rename': 'error',
    'prefer-const': 'error',
    'prefer-rest-params': 'error',
    'prefer-spread': 'error',
    'prefer-template': 'error',
    'rest-spread-spacing': ['error', 'never'],

    // React
    'react/no-danger': 'error',
    'react/no-danger-with-children': 'error',
    'react/no-did-mount-set-state': 'error',
    'react/no-did-update-set-state': 'error',
    'react/no-multi-comp': 'error',
    'react/no-render-return-value': 'error',
    'react/no-string-refs': 'error',
    'react/self-closing-comp': ['error', { 'component': true, 'html': true }],

    // React/JSX
    'react/jsx-equals-spacing': 'error',
    'react/jsx-indent': ['error', 2],
    // TODO not flexible if tag has children props should be indented once more
    // 'react/jsx-indent-props': ['error', 2],
    'react/jsx-key': 'error',
    'react/jsx-no-bind': ['error', { ignoreRefs: false, allowArrowFunctions: true, allowBind: false }],
    'react/jsx-no-comment-textnodes': 'error',
    'react/jsx-no-target-blank': 'error',
    'react/jsx-pascal-case': 'error',
    'react/jsx-wrap-multilines': 'error'
  }
};