text: /**
   * Copyright (c) 2015-present, Facebook, Inc.
   * All rights reserved.
   *
   * This source code is licensed under the BSD-style license found in the
   * LICENSE file in the root directory of this source tree. An additional grant
   * of patent rights can be found in the PATENTS file in the same directory.
   */
  
  // Inspired by https://github.com/airbnb/javascript but less opinionated.
  
  // We use eslint-loader so even warnings are very visibile.
  // This is why we only use "WARNING" level for potential errors,
  // and we don't use "ERROR" level at all.
  
  // In the future, we might create a separate list of rules for production.
  // It would probably be more strict.
  
  var WARNING = 1;
  
  module.exports = {
    root: true,
  
    parser: 'babel-eslint',
  
    // import plugin is termporarily disabled, scroll below to see why
    plugins: ['react'/*, 'import'*/],
  
    env: {
      es6: true,
      commonjs: true,
      browser: true
    },
  
    parserOptions: {
      ecmaVersion: 6,
      sourceType: 'module',
      ecmaFeatures: {
        jsx: true,
        generators: true,
        experimentalObjectRestSpread: true
      }
    },
  
    settings: {
      'import/ignore': [
        'node_modules',
        '\\.(json|css|jpg|png|gif|eot|svg|ttf|woff|woff2|mp4|webm)$',
      ],
      'import/extensions': ['.js'],
      'import/resolver': {
        node: {
          extensions: ['.js', '.json']
        }
      }
    },
  
    rules: {
      // http://eslint.org/docs/rules/
      'array-callback-return': WARNING,
      'default-case': [WARNING, { commentPattern: '^no default$' }],
      'dot-location': [WARNING, 'property'],
      eqeqeq: [WARNING, 'allow-null'],
      'guard-for-in': WARNING,
      'new-cap': [WARNING, { newIsCap: true }],
      'new-parens': WARNING,
      'no-array-constructor': WARNING,
      'no-caller': WARNING,
      'no-cond-assign': [WARNING, 'always'],
      'no-const-assign': WARNING,
      'no-control-regex': WARNING,
      'no-delete-var': WARNING,
      'no-dupe-args': WARNING,
      'no-dupe-class-members': WARNING,
      'no-dupe-keys': WARNING,
      'no-duplicate-case': WARNING,
      'no-empty-character-class': WARNING,
      'no-empty-pattern': WARNING,
      'no-eval': WARNING,
      'no-ex-assign': WARNING,
      'no-extend-native': WARNING,
      'no-extra-bind': WARNING,
      'no-extra-label': WARNING,
      'no-fallthrough': WARNING,
      'no-func-assign': WARNING,
      'no-implied-eval': WARNING,
      'no-invalid-regexp': WARNING,
      'no-iterator': WARNING,
      'no-label-var': WARNING,
      'no-labels': [WARNING, { allowLoop: false, allowSwitch: false }],
      'no-lone-blocks': WARNING,
      'no-loop-func': WARNING,
      'no-mixed-operators': [WARNING, {
        groups: [
          ['+', '-', '*', '/', '%', '**'],
          ['&', '|', '^', '~', '<<', '>>', '>>>'],
          ['==', '!=', '===', '!==', '>', '>=', '<', '<='],
          ['&&', '||'],
          ['in', 'instanceof']
        ],
        allowSamePrecedence: false
      }],
      'no-multi-str': WARNING,
      'no-native-reassign': WARNING,
      'no-negated-in-lhs': WARNING,
      'no-new-func': WARNING,
      'no-new-object': WARNING,
      'no-new-symbol': WARNING,
      'no-new-wrappers': WARNING,
      'no-obj-calls': WARNING,
      'no-octal': WARNING,
      'no-octal-escape': WARNING,
      'no-redeclare': WARNING,
      'no-regex-spaces': WARNING,
      'no-restricted-syntax': [
        WARNING,
        'LabeledStatement',
        'WithStatement',
      ],
      'no-return-assign': WARNING,
      'no-script-url': WARNING,
      'no-self-assign': WARNING,
      'no-self-compare': WARNING,
      'no-sequences': WARNING,
      'no-shadow-restricted-names': WARNING,
      'no-sparse-arrays': WARNING,
      'no-this-before-super': WARNING,
      'no-throw-literal': WARNING,
      'no-undef': WARNING,
      'no-unexpected-multiline': WARNING,
      'no-unreachable': WARNING,
      'no-unused-expressions': WARNING,
      'no-unused-labels': WARNING,
      'no-unused-vars': [WARNING, { vars: 'local', args: 'none' }],
      'no-use-before-define': [WARNING, 'nofunc'],
      'no-useless-computed-key': WARNING,
      'no-useless-concat': WARNING,
      'no-useless-constructor': WARNING,
      'no-useless-escape': WARNING,
      'no-useless-rename': [WARNING, {
        ignoreDestructuring: false,
        ignoreImport: false,
        ignoreExport: false,
      }],
      'no-with': WARNING,
      'no-whitespace-before-property': WARNING,
      'operator-assignment': [WARNING, 'always'],
      radix: WARNING,
      'require-yield': WARNING,
      'rest-spread-spacing': [WARNING, 'never'],
      strict: [WARNING, 'never'],
      'unicode-bom': [WARNING, 'never'],
      'use-isnan': WARNING,
      'valid-typeof': WARNING,
  
      // https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/
  
      // TODO: import rules are temporarily disabled because they don't play well
      // with how eslint-loader only checks the file you change. So if module A
      // imports module B, and B is missing a default export, the linter will
      // record this as an issue in module A. Now if you fix module B, the linter
      // will not be aware that it needs to re-lint A as well, so the error
      // will stay until the next restart, which is really confusing.
  
      // This is probably fixable with a patch to eslint-loader.
      // When file A is saved, we want to invalidate all files that import it
      // *and* that currently have lint errors. This should fix the problem.
  
      // 'import/default': WARNING,
      // 'import/export': WARNING,
      // 'import/named': WARNING,
      // 'import/namespace': WARNING,
      // 'import/no-amd': WARNING,
      // 'import/no-duplicates': WARNING,
      // 'import/no-extraneous-dependencies': WARNING,
      // 'import/no-named-as-default': WARNING,
      // 'import/no-named-as-default-member': WARNING,
      // 'import/no-unresolved': [WARNING, { commonjs: true }],
  
      // https://github.com/yannickcr/eslint-plugin-react/tree/master/docs/rules
      'react/jsx-equals-spacing': [WARNING, 'never'],
      'react/jsx-handler-names': [WARNING, {
        eventHandlerPrefix: 'handle',
        eventHandlerPropPrefix: 'on',
      }],
      'react/jsx-no-duplicate-props': [WARNING, { ignoreCase: true }],
      'react/jsx-no-undef': WARNING,
      'react/jsx-pascal-case': [WARNING, {
        allowAllCaps: true,
        ignore: [],
      }],
      'react/jsx-uses-react': WARNING,
      'react/jsx-uses-vars': WARNING,
      'react/no-deprecated': WARNING,
      'react/no-direct-mutation-state': WARNING,
      'react/no-is-mounted': WARNING,
      'react/react-in-jsx-scope': WARNING,
      'react/require-render-return': WARNING
    }
  };
  