{
  parser: 'babel-eslint',
  plugins: [
    'react',
    'prettier',
    'babel',
  ],
  env: {
    browser: true,
    mocha: true,
  node: true,
    es6: true,
  },
  globals: {
    expect: true,
  },
  "parserOptions": {
    ecmaFeatures: {
      arrowFunctions: true,
      binaryLiterals: true,
      blockBindings: true,
      classes: true,
      defaultParams: false,
      destructuring: true,
      forOf: false,
      generators: false,
      modules: true,
      objectLiteralComputedProperties: true,
      objectLiteralDuplicateProperties: false,
      objectLiteralShorthandMethods: true,
      objectLiteralShorthandProperties: true,
      octalLiterals: false,
      regexUFlag: false,
      regexYFlag: false,
      restParams: true,
      spread: true,
      superInFunctions: false,
      templateStrings: true,
      unicodeCodePointEscapes: false,
      globalReturn: false,
      jsx: true,
    },
  },
  rules: {
    'quotes': [1, 'single'],
    'func-style': 0,
    'func-names': 0,
    'arrow-parens': 0,
    'comma-dangle': [2, 'always-multiline'],
    'no-cond-assign': 2,
    'no-console': ['error', {allow: ['error', 'warn']}],
    'no-constant-condition': 2,
    'no-control-regex': 2,
    'no-debugger': 2,
    'no-dupe-args': 2,
    'no-dupe-keys': 2,
    'no-duplicate-case': 2,
    'no-empty-character-class': 2,
    'no-empty': 2,
    'no-ex-assign': 2,
    'no-extra-boolean-cast': 2,
    'no-extra-parens': 0,
    'no-extra-semi': 2,
    'no-func-assign': 2,
    'no-inner-declarations': [2, 'both'],
    'no-invalid-regexp': 2,
    'no-irregular-whitespace': 2,
    'no-negated-in-lhs': 2,
    'no-obj-calls': 2,
    'no-regex-spaces': 2,
    'no-sparse-arrays': 2,
    'no-unexpected-multiline': 2,
    'no-unreachable': 2,
    'use-isnan': 2,
    'valid-jsdoc': 0,
    'valid-typeof': 2,

    'accessor-pairs': 2,
    'block-scoped-var': 2,
    'complexity': 0, // TODO: revisit
    'consistent-return': 0,
    'curly': 2,
    'default-case': 0, // TODO: revisit
    'dot-location': [2, 'property'],
    'dot-notation': 2,
    'eqeqeq': 2,
    'no-alert': 2,
    'no-caller': 2,
    'no-case-declarations': 2,
    'no-div-regex': 2,
    'no-else-return': 2,
    'no-labels': 2,
    'no-empty-pattern': 2,
    'no-eq-null': 2,
    'no-eval': 2,
    'no-extend-native': 2,
    'no-extra-bind': 2,
    'no-fallthrough': 2,
    'no-floating-decimal': 2,
    'no-implicit-coercion': 0,
    'no-implied-eval': 2,
    'no-iterator': 2,
    'no-lone-blocks': 2,
    'no-loop-func': 2,
    'no-magic-numbers': [0, {ignore: [-1, 0, 1, 2]}],
    'no-multi-spaces': 2,
    'no-multi-str': 2,
    'no-native-reassign': 2,
    'no-new-func': 2,
    'no-new-wrappers': 2,
    'no-new': 2,
    'no-octal-escape': 2,
    'no-octal': 2,
    'no-proto': 2,
    'no-redeclare': 2,
    'no-script-url': 2,
    'no-self-compare': 2,
    'no-sequences': 2,
    'no-throw-literal': 2,
    'no-unused-expressions': 2,
    'no-useless-call': 2,
    'no-useless-concat': 2,
    'no-void': 2,
    'no-warning-comments': 0,
    'no-with': 2,
    'radix': 2,
    'vars-on-top': 2,

    'strict': [2, 'never'],

    'init-declarations': 0,
    'no-catch-shadow': 2,
    'no-delete-var': 2,
    'no-label-var': 2,
    'no-shadow-restricted-names': 2,
    'no-shadow': 2,
    'no-undef-init': 2,
    'no-undef': 2,
    'no-unused-vars': [2, {args: 'after-used', 'argsIgnorePattern': '^_'}],
    'no-use-before-define': [2, 'nofunc'],

    'array-bracket-spacing': [2, 'never'],
    'block-spacing': [2, 'always'],
    'brace-style': [2, '1tbs'],
    'camelcase': [2, {properties: 'never'}],
    'comma-spacing': [2, {before: false, after: true}],
    'comma-style': [2, 'last'],
    'computed-property-spacing': [2, 'never'],
    'consistent-this': [2, 'self'],
    'eol-last': 0, // TODO: revisit
    'id-length': 0,
    'id-match': 0,
    'indent': [0, 2, {SwitchCase: 1}],
    'key-spacing': [2, {beforeColon: false, afterColon: true}],
    'linebreak-style': [2, 'unix'],
    'lines-around-comment': 0,
    'max-depth': 0,
    'max-len': 0,
    'max-nested-callbacks': 0,
    'max-params': 0,
    'max-statements': 0,
    'new-cap': 0,
    'new-parens': 2,
    'newline-after-var': 0,
    'no-array-constructor': 2,
    'no-negated-condition': 2,
    'no-inline-comments': 0,
    'no-lonely-if': 2,
    'no-mixed-spaces-and-tabs': 2,
    'no-multiple-empty-lines': 2,
    'no-nested-ternary': 2,
    'no-new-object': 2,
    'no-plusplus': [2, {allowForLoopAfterthoughts: true}],
    'no-spaced-func': 2,
    'no-ternary': 0,
    'no-trailing-spaces': 2,
    'no-underscore-dangle': 0,
    'no-unneeded-ternary': 2,
    'object-curly-spacing': [2, 'never'],
    'one-var': 0,
    'operator-assignment': [2, 'always'],
    'padded-blocks': [2, 'never'],
    'quote-props': [2, 'as-needed', {keywords: false, numbers: false }],
    'require-jsdoc': 0,
    'semi-spacing': [2, {before: false, after: true}],
    'semi': [2, 'never'],
    'sort-vars': 0,
    'keyword-spacing': 'error',
    'space-before-blocks': [2, 'always'],
    'space-before-function-paren': [2, 'never'],
    'space-in-parens': [2, 'never'],
    'space-infix-ops': 2,
    'space-unary-ops': 2,
    'spaced-comment': [2, 'always'],
    'wrap-regex': 0,
    'arrow-body-style': 0,
    'arrow-spacing': [2, {before: true, after: true}],
    'no-confusing-arrow': 0,
    'no-class-assign': 2,
    'no-const-assign': 2,
    'no-dupe-class-members': 2,
    'no-this-before-super': 2,
    'no-var': 2,
    'object-shorthand': [2, 'always'],
    'prefer-arrow-callback': 0,
    'prefer-const': 2,
    'prefer-template': 2,

    // React
    'jsx-quotes': [1, "prefer-double"],
    'react/display-name': 0,
    'react/jsx-no-bind': [2, {ignoreRefs: true}],
    'react/jsx-boolean-value': [2, 'always'],
    'react/jsx-curly-spacing': [2, 'never'],
    'react/jsx-equals-spacing': [2, 'never'],
    'react/jsx-key': 2,
    'react/jsx-no-duplicate-props': 2,
    'react/jsx-no-undef': 2,
    'react/jsx-sort-props': 0,
    'react/jsx-sort-prop-types': 0,
    'react/jsx-uses-react': 2,
    'react/jsx-uses-vars': 2,
    'react/no-danger': 2,
    'react/no-did-mount-set-state': 0,
    'react/no-did-update-set-state': 2,
    'react/no-direct-mutation-state': 2,
    'react/no-is-mounted': 2,
    'react/no-multi-comp': 0,
    'react/no-set-state': 0,
    'react/no-string-refs': 0, // TODO: 2
    'react/no-unknown-property': 2,
    'react/prop-types': 2,
    'react/prefer-es6-class': [0, 'never'],
    'react/react-in-jsx-scope': 2,
    'react/require-extension': 0,
    'react/self-closing-comp': 0, // TODO: we can re-enable this if some brave soul wants to update the code (mostly spans acting as icons)
    'react/sort-comp': 0, // TODO: 2

    // Prettier
    'prettier/prettier': ['error', {
      'singleQuote': true,
      'trailingComma': 'es5',
      'bracketSpacing': false,
      'semi': false,
    }],

    // Babel
    'babel/no-invalid-this': 1
  },
}