index.js 8.14 KiB
/**
 * 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.
 */
'use strict';
// Inspired by https://github.com/airbnb/javascript but less opinionated.
// We use eslint-loader so even warnings are very visible.
// 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.
// The ESLint browser environment defines all browser globals as valid,
// even though most people don't know some of them exist (e.g. `name` or `status`).
// This is dangerous as it hides accidentally undefined variables.
// We blacklist the globals that we deem potentially confusing.
// To use them, explicitly reference them, e.g. `window.name` or `window.status`.
var restrictedGlobals = [
  'addEventListener',
  'blur',
  'close',
  'closed',
  'confirm',
  'defaultStatus',
  'defaultstatus',
  'event',
  'external',
  'find',
  'focus',
  'frameElement',
  'frames',
  'history',
  'innerHeight',
  'innerWidth',
  'length',
  'location',
  'locationbar',
  'menubar',
  'moveBy',
  'moveTo',
  'name',
  'onblur',
  'onerror',
  'onfocus',
  'onload',
  'onresize',
  'onunload',
  'open',
  'opener',
  'opera',
  'outerHeight',
  'outerWidth',
  'pageXOffset',
  'pageYOffset',
  'parent',
  'print',
  'removeEventListener',
  'resizeBy',
  'resizeTo',
  'screen',
  'screenLeft',
  'screenTop',
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'screenX', 'screenY', 'scroll', 'scrollbars', 'scrollBy', 'scrollTo', 'scrollX', 'scrollY', 'self', 'status', 'statusbar', 'stop', 'toolbar', 'top', ]; module.exports = { root: true, parser: 'babel-eslint', plugins: ['import', 'flowtype', 'jsx-a11y', 'react'], env: { browser: true, commonjs: true, es6: true, jest: true, node: true, }, parserOptions: { ecmaVersion: 6, sourceType: 'module', ecmaFeatures: { jsx: true, generators: true, experimentalObjectRestSpread: true, }, }, rules: { // http://eslint.org/docs/rules/ 'array-callback-return': 'warn', 'default-case': ['warn', { commentPattern: '^no default$' }], 'dot-location': ['warn', 'property'], eqeqeq: ['warn', 'allow-null'], 'new-parens': 'warn', 'no-array-constructor': 'warn', 'no-caller': 'warn', 'no-cond-assign': ['warn', 'always'], 'no-const-assign': 'warn', 'no-control-regex': 'warn', 'no-delete-var': 'warn', 'no-dupe-args': 'warn', 'no-dupe-class-members': 'warn', 'no-dupe-keys': 'warn', 'no-duplicate-case': 'warn', 'no-empty-character-class': 'warn', 'no-empty-pattern': 'warn', 'no-eval': 'warn', 'no-ex-assign': 'warn', 'no-extend-native': 'warn', 'no-extra-bind': 'warn', 'no-extra-label': 'warn', 'no-fallthrough': 'warn', 'no-func-assign': 'warn', 'no-implied-eval': 'warn', 'no-invalid-regexp': 'warn', 'no-iterator': 'warn',
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'no-label-var': 'warn', 'no-labels': ['warn', { allowLoop: true, allowSwitch: false }], 'no-lone-blocks': 'warn', 'no-loop-func': 'warn', 'no-mixed-operators': [ 'warn', { groups: [ ['&', '|', '^', '~', '<<', '>>', '>>>'], ['==', '!=', '===', '!==', '>', '>=', '<', '<='], ['&&', '||'], ['in', 'instanceof'], ], allowSamePrecedence: false, }, ], 'no-multi-str': 'warn', 'no-native-reassign': 'warn', 'no-negated-in-lhs': 'warn', 'no-new-func': 'warn', 'no-new-object': 'warn', 'no-new-symbol': 'warn', 'no-new-wrappers': 'warn', 'no-obj-calls': 'warn', 'no-octal': 'warn', 'no-octal-escape': 'warn', 'no-redeclare': 'warn', 'no-regex-spaces': 'warn', 'no-restricted-syntax': ['warn', 'WithStatement'], 'no-script-url': 'warn', 'no-self-assign': 'warn', 'no-self-compare': 'warn', 'no-sequences': 'warn', 'no-shadow-restricted-names': 'warn', 'no-sparse-arrays': 'warn', 'no-template-curly-in-string': 'warn', 'no-this-before-super': 'warn', 'no-throw-literal': 'warn', 'no-undef': 'error', 'no-restricted-globals': ['error'].concat(restrictedGlobals), 'no-unexpected-multiline': 'warn', 'no-unreachable': 'warn', 'no-unused-expressions': [ 'warn', { allowShortCircuit: true, allowTernary: true, }, ], 'no-unused-labels': 'warn', 'no-unused-vars': [ 'warn', { args: 'none', ignoreRestSiblings: true, }, ], 'no-use-before-define': [ 'warn', { functions: false, classes: false, variables: false, }, ], 'no-useless-computed-key': 'warn', 'no-useless-concat': 'warn', 'no-useless-constructor': 'warn', 'no-useless-escape': 'warn', 'no-useless-rename': [
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'warn', { ignoreDestructuring: false, ignoreImport: false, ignoreExport: false, }, ], 'no-with': 'warn', 'no-whitespace-before-property': 'warn', radix: 'warn', 'require-yield': 'warn', 'rest-spread-spacing': ['warn', 'never'], strict: ['warn', 'never'], 'unicode-bom': ['warn', 'never'], 'use-isnan': 'warn', 'valid-typeof': 'warn', 'no-restricted-properties': [ 'error', // TODO: reenable once import() is no longer slow. // https://github.com/facebookincubator/create-react-app/issues/2176 // { // object: 'require', // property: 'ensure', // message: 'Please use import() instead. More info: https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/template/README.md#code-splitting', // }, { object: 'System', property: 'import', message: 'Please use import() instead. More info: https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/template/README.md#code-splitting', }, ], // https://github.com/benmosher/eslint-plugin-import/tree/master/docs/rules 'import/first': 'error', 'import/no-amd': 'error', 'import/no-webpack-loader-syntax': 'error', // https://github.com/yannickcr/eslint-plugin-react/tree/master/docs/rules 'react/jsx-no-comment-textnodes': 'warn', 'react/jsx-no-duplicate-props': ['warn', { ignoreCase: true }], 'react/jsx-no-target-blank': 'warn', 'react/jsx-no-undef': 'error', 'react/jsx-pascal-case': [ 'warn', { allowAllCaps: true, ignore: [], }, ], 'react/jsx-uses-react': 'warn', 'react/jsx-uses-vars': 'warn', 'react/no-danger-with-children': 'warn', 'react/no-deprecated': 'warn', 'react/no-direct-mutation-state': 'warn', 'react/no-is-mounted': 'warn', 'react/react-in-jsx-scope': 'error', 'react/require-render-return': 'error', 'react/style-prop-object': 'warn', // https://github.com/evcohen/eslint-plugin-jsx-a11y/tree/master/docs/rules 'jsx-a11y/accessible-emoji': 'warn', 'jsx-a11y/alt-text': 'warn', 'jsx-a11y/anchor-has-content': 'warn', 'jsx-a11y/aria-activedescendant-has-tabindex': 'warn', 'jsx-a11y/aria-props': 'warn', 'jsx-a11y/aria-proptypes': 'warn', 'jsx-a11y/aria-role': 'warn', 'jsx-a11y/aria-unsupported-elements': 'warn', 'jsx-a11y/heading-has-content': 'warn',
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'jsx-a11y/href-no-hash': 'warn', 'jsx-a11y/iframe-has-title': 'warn', 'jsx-a11y/img-redundant-alt': 'warn', 'jsx-a11y/no-access-key': 'warn', 'jsx-a11y/no-distracting-elements': 'warn', 'jsx-a11y/no-redundant-roles': 'warn', 'jsx-a11y/role-has-required-aria-props': 'warn', 'jsx-a11y/role-supports-aria-props': 'warn', 'jsx-a11y/scope': 'warn', // https://github.com/gajus/eslint-plugin-flowtype 'flowtype/define-flow-type': 'warn', // TODO: Reenable once https://github.com/gajus/eslint-plugin-flowtype/issues/165 is fixed //'flowtype/require-valid-file-annotation': 'warn', 'flowtype/use-flow-type': 'warn', }, };