@kiwicom/eslint-config

// @flow strict const OFF = 0; const WARN = 1; const ERROR = 2; const NEXT_VERSION_ERROR = 3; // special value changed later depending on the required strictness // Please note: there are some TODOs which means we will make it more strict // in the future versions. This change requires major version bump. It's not // safe to immediately switch from OFF to ERROR. Some time for migration is // needed (WARN serves this purpose). module.exports = { // Possible Errors (http://eslint.org/docs/rules/#possible-errors) 'for-direction': ERROR, 'getter-return': ERROR, 'no-async-promise-executor': ERROR, 'no-compare-neg-zero': ERROR, 'no-cond-assign': ERROR, 'no-console': ERROR, 'no-constant-condition': [WARN, { checkLoops: false }], 'no-control-regex': ERROR, 'no-debugger': ERROR, 'no-dupe-args': ERROR, 'no-dupe-keys': ERROR, 'no-duplicate-case': ERROR, 'no-empty': [WARN, { allowEmptyCatch: true }], 'no-empty-character-class': ERROR, 'no-ex-assign': ERROR, 'no-extra-boolean-cast': ERROR, 'no-func-assign': ERROR, 'no-inner-declarations': OFF, 'no-invalid-regexp': ERROR, 'no-irregular-whitespace': ERROR, 'no-misleading-character-class': ERROR, 'no-obj-calls': ERROR, 'no-prototype-builtins': ERROR, 'no-regex-spaces': ERROR, 'no-sparse-arrays': ERROR, 'no-template-curly-in-string': ERROR, 'no-unreachable': ERROR, 'no-unsafe-finally': ERROR, 'no-unsafe-negation': ERROR, 'require-atomic-updates': ERROR, 'use-isnan': ERROR, 'valid-jsdoc': OFF, 'valid-typeof': OFF, // see: babel/valid-typeof // Best Practices (http://eslint.org/docs/rules/#best-practices) 'accessor-pairs': [WARN, { setWithoutGet: true }], 'array-callback-return': ERROR, 'block-scoped-var': OFF, 'class-methods-use-this': OFF, complexity: OFF, 'consistent-return': [ERROR, { treatUndefinedAsUnspecified: false }], curly: [ERROR, 'all'], 'default-case': OFF, 'dot-notation': ERROR, eqeqeq: [ERROR, 'smart'], 'guard-for-in': ERROR, 'max-classes-per-file': OFF, 'no-alert': WARN, 'no-await-in-loop': WARN, 'no-caller': ERROR, 'no-case-declarations': WARN, 'no-div-regex': WARN, 'no-else-return': ERROR, 'no-empty-function': OFF, 'no-empty-pattern': ERROR, 'no-eq-null': OFF, 'no-eval': ERROR, 'no-extend-native': WARN, 'no-extra-bind': WARN, 'no-extra-label': ERROR, 'no-fallthrough': WARN, 'no-global-assign': [ERROR, { exceptions: ['Map', 'Set'] }], 'no-implicit-coercion': OFF, 'no-implicit-globals': OFF, 'no-implied-eval': ERROR, 'no-invalid-this': OFF, 'no-iterator': ERROR, 'no-labels': [ERROR, { allowLoop: true, allowSwitch: true }], 'no-lone-blocks': ERROR, 'no-loop-func': ERROR, 'no-magic-numbers': OFF, 'no-multi-str': ERROR, 'no-new-func': ERROR, 'no-new-wrappers': WARN, 'no-new': WARN, 'no-octal': ERROR, 'no-octal-escape': ERROR, 'no-param-reassign': ERROR, 'no-proto': ERROR, 'no-redeclare': [WARN, { builtinGlobals: true }], 'no-restricted-properties': OFF, 'no-return-assign': WARN, 'no-return-await': WARN, 'no-script-url': ERROR, 'no-self-assign': WARN, 'no-self-compare': WARN, 'no-sequences': WARN, 'no-throw-literal': WARN, 'no-unmodified-loop-condition': OFF, 'no-unused-expressions': OFF, // see: flow/no-unused-expressions 'no-unused-labels': WARN, 'no-useless-call': WARN, 'no-useless-catch': ERROR, 'no-useless-concat': ERROR, 'no-useless-escape': ERROR, 'no-useless-return': WARN, 'no-void': WARN, 'no-warning-comments': OFF, 'no-with': ERROR, 'prefer-named-capture-group': ERROR, 'prefer-promise-reject-errors': WARN, radix: ERROR, 'require-await': ERROR, 'require-unicode-regexp': OFF, 'vars-on-top': ERROR, yoda: NEXT_VERSION_ERROR, // Strict Mode (http://eslint.org/docs/rules/#strict-mode) strict: WARN, // Variables (http://eslint.org/docs/rules/#variables) 'init-declarations': OFF, 'no-delete-var': ERROR, 'no-label-var': ERROR, 'no-restricted-globals': OFF, 'no-shadow-restricted-names': ERROR, 'no-shadow': OFF, 'no-undef-init': ERROR, 'no-undef': ERROR, 'no-undefined': OFF, 'no-unused-vars': [ERROR, { args: 'after-used' }], 'no-use-before-define': OFF, // https://github.com/babel/babel-eslint/issues/485 // Node.js and CommonJS (http://eslint.org/docs/rules/#nodejs-and-commonjs) 'callback-return': OFF, 'global-require': OFF, 'handle-callback-err': WARN, 'no-buffer-constructor': WARN, 'no-mixed-requires': OFF, 'no-new-require': WARN, 'no-path-concat': WARN, 'no-process-env': OFF, 'no-process-exit': OFF, 'no-restricted-modules': OFF, 'no-sync': OFF, // Stylistic Issues (http://eslint.org/docs/rules/#stylistic-issues) camelcase: OFF, // see: babel/camelcase 'capitalized-comments': OFF, 'consistent-this': OFF, 'func-name-matching': OFF, 'func-names': OFF, 'func-style': OFF, 'id-blacklist': OFF, 'id-length': OFF, 'id-match': OFF, 'line-comment-position': OFF, 'lines-between-class-members': [WARN, 'always', { exceptAfterSingleLine: true }], 'max-depth': OFF, 'max-lines': OFF, 'max-lines-per-function': OFF, 'max-nested-callbacks': OFF, 'max-params': OFF, 'max-statements': OFF, 'max-statements-per-line': OFF, 'multiline-comment-style': OFF, 'new-cap': [ WARN, { newIsCap: true, capIsNew: false }], 'no-array-constructor': WARN, 'no-bitwise': ERROR, 'no-continue': OFF, 'no-inline-comments': OFF, 'no-lonely-if': ERROR, 'no-multi-assign': OFF, 'no-negated-condition': OFF, 'no-nested-ternary': ERROR, 'no-new-object': WARN, 'no-plusplus': OFF, 'no-restricted-syntax': OFF, 'no-ternary': OFF, 'no-underscore-dangle': OFF, 'no-unneeded-ternary': WARN, 'one-var': [WARN, { initialized: 'never' }], 'operator-assignment': WARN, 'padding-line-between-statements': OFF, 'prefer-object-spread': OFF, 'require-jsdoc': OFF, 'sort-keys': OFF, 'sort-vars': OFF, 'spaced-comment': [ ERROR, 'always', { block: { balanced: true, markers: [':', '::'] // flow } }], // ECMAScript 6 (http://eslint.org/docs/rules/#ecmascript-6) 'constructor-super': ERROR, 'no-class-assign': WARN, 'no-const-assign': ERROR, 'no-dupe-class-members': ERROR, 'no-duplicate-imports': OFF, 'no-new-symbol': WARN, 'no-restricted-imports': OFF, 'no-this-before-super': ERROR, 'no-useless-computed-key': ERROR, 'no-useless-constructor': ERROR, 'no-var': ERROR, 'no-useless-rename': WARN, 'object-shorthand': OFF, 'prefer-const': [ERROR, { destructuring: 'all' }], 'prefer-destructuring': OFF, 'prefer-numeric-literals': OFF, 'prefer-rest-params': WARN, 'prefer-spread': WARN, 'prefer-template': ERROR, 'require-yield': ERROR, 'sort-imports': OFF, 'symbol-description': NEXT_VERSION_ERROR, // Babel (https://github.com/babel/eslint-plugin-babel) 'babel/camelcase': [ ERROR, { ignoreDestructuring: false, properties: 'never' // it's quite common to have object properties mixed }], 'babel/new-cap': OFF, 'babel/no-invalid-this': OFF, 'babel/no-unused-expressions': OFF, // see: flow/no-unused-expressions 'babel/valid-typeof': ERROR, // flowtype (https://github.com/gajus/eslint-plugin-flowtype) 'flowtype/array-style-complex-type': OFF, 'flowtype/array-style-simple-type': OFF, 'flowtype/arrow-parens': OFF, 'flowtype/define-flow-type': WARN, 'flowtype/newline-after-flow-annotation': [ERROR, 'always'], 'flowtype/no-dupe-keys': ERROR, 'flowtype/no-existential-type': ERROR, // https://github.com/facebook/flow/issues/6308 'flowtype/no-flow-fix-me-comments': OFF, 'flowtype/no-mixed': OFF, 'flowtype/no-mutable-array': OFF, 'flowtype/no-primitive-constructor-types': WARN, 'flowtype/no-types-missing-file-annotation': ERROR, 'flowtype/no-unused-expressions': [ERROR, { allowTaggedTemplates: true }], 'flowtype/no-weak-types': OFF, 'flowtype/require-compound-type-alias': OFF, 'flowtype/require-exact-type': OFF, 'flowtype/require-indexer-name': OFF, 'flowtype/require-inexact-type': ERROR, 'flowtype/require-parameter-type': OFF, 'flowtype/require-readonly-react-props': OFF, // TODO: https://github.com/gajus/eslint-plugin-flowtype/pull/400#issuecomment-492828739 'flowtype/require-return-type': OFF, 'flowtype/require-types-at-top': OFF, 'flowtype/require-valid-file-annotation': [ERROR, 'always'], 'flowtype/require-variable-type': OFF, 'flowtype/sort-keys': OFF, 'flowtype/spread-exact-type': OFF, // TODO: WARN? 'flowtype/type-id-match': OFF, 'flowtype/type-import-style': OFF, 'flowtype/use-flow-type': WARN, 'flowtype/valid-syntax': OFF, // Jest (https://github.com/jest-community/eslint-plugin-jest) 'jest/consistent-test-it': OFF, 'jest/expect-expect': OFF, 'jest/lowercase-name': OFF, 'jest/no-alias-methods': OFF, 'jest/no-commented-out-tests': OFF, 'jest/no-disabled-tests': ERROR, 'jest/no-duplicate-hooks': ERROR, 'jest/no-empty-title': ERROR, 'jest/no-expect-resolves': OFF, 'jest/no-export': ERROR, 'jest/no-focused-tests': ERROR, 'jest/no-hooks': OFF, // TODO: WARN (?) 'jest/no-identical-title': ERROR, 'jest/no-if': OFF, 'jest/no-jasmine-globals': ERROR, 'jest/no-jest-import': ERROR, 'jest/no-large-snapshots': OFF, 'jest/no-mocks-import': ERROR, 'jest/no-standalone-expect': ERROR, 'jest/no-test-callback': OFF, 'jest/no-test-prefixes': OFF, 'jest/no-test-return-statement': ERROR, 'jest/no-truthy-falsy': OFF, 'jest/no-try-expect': OFF, 'jest/prefer-called-with': WARN, 'jest/prefer-expect-assertions': OFF, 'jest/prefer-inline-snapshots': OFF, 'jest/prefer-spy-on': OFF, 'jest/prefer-strict-equal': OFF, // TODO: WARN 'jest/prefer-to-be-null': ERROR, 'jest/prefer-to-be-undefined': ERROR, 'jest/prefer-to-contain': ERROR, 'jest/prefer-to-have-length': ERROR, 'jest/prefer-todo': ERROR, 'jest/require-top-level-describe': OFF, 'jest/require-tothrow-message': OFF, 'jest/valid-describe': ERROR, 'jest/valid-expect': ERROR, 'jest/valid-expect-in-promise': ERROR, // prefer-object-spread (https://github.com/bryanrsmith/eslint-plugin-prefer-object-spread) 'prefer-object-spread/prefer-object-spread': WARN, // React (https://github.com/yannickcr/eslint-plugin-react) 'react/boolean-prop-naming': OFF, 'react/button-has-type': [ERROR, { button: true, submit: true, reset: false }], 'react/default-props-match-prop-types': OFF, 'react/destructuring-assignment': OFF, 'react/display-name': OFF, 'react/forbid-component-props': OFF, 'react/forbid-dom-props': [ ERROR, { forbid: [ 'class', // https://reactjs.org/docs/dom-elements.html#classname 'for' // https://reactjs.org/docs/dom-elements.html#htmlfor ] }], 'react/forbid-elements': OFF, 'react/forbid-foreign-prop-types': OFF, 'react/forbid-prop-types': OFF, 'react/jsx-boolean-value': OFF, 'react/jsx-curly-brace-presence': OFF, 'react/jsx-filename-extension': OFF, 'react/jsx-fragments': OFF, 'react/jsx-handler-names': OFF, 'react/jsx-key': ERROR, 'react/jsx-max-depth': OFF, 'react/jsx-no-bind': [ ERROR, { ignoreDOMComponents: true, ignoreRefs: true, allowArrowFunctions: true, allowFunctions: false, allowBind: false }], 'react/jsx-no-comment-textnodes': NEXT_VERSION_ERROR, 'react/jsx-no-duplicate-props': ERROR, 'react/jsx-no-literals': OFF, 'react/jsx-no-target-blank': OFF, 'react/jsx-no-undef': ERROR, 'react/jsx-pascal-case': ERROR, 'react/jsx-props-no-spreading': OFF, 'react/jsx-sort-default-props': OFF, 'react/jsx-sort-props': OFF, 'react/jsx-uses-react': WARN, 'react/jsx-uses-vars': ERROR, 'react/no-access-state-in-setstate': ERROR, 'react/no-array-index-key': OFF, 'react/no-children-prop': OFF, 'react/no-danger': OFF, 'react/no-danger-with-children': ERROR, 'react/no-deprecated': ERROR, 'react/no-did-mount-set-state': OFF, // https://github.com/airbnb/javascript/issues/684#issuecomment-264094930 'react/no-did-update-set-state': ERROR, 'react/no-direct-mutation-state': ERROR, 'react/no-find-dom-node': ERROR, 'react/no-is-mounted': ERROR, 'react/no-multi-comp': [ERROR, { ignoreStateless: true }], 'react/no-redundant-should-component-update': ERROR, 'react/no-render-return-value': ERROR, 'react/no-set-state': OFF, 'react/no-string-refs': OFF, 'react/no-this-in-sfc': ERROR, 'react/no-typos': OFF, 'react/no-unescaped-entities': ERROR, 'react/no-unknown-property': NEXT_VERSION_ERROR, 'react/no-unsafe': OFF, 'react/no-unused-prop-types': OFF, 'react/no-unused-state': OFF, // Enable when they fix this issue: https://github.com/yannickcr/eslint-plugin-react/issues/1910 'react/no-will-update-set-state': OFF, 'react/prefer-es6-class': [ERROR, 'always'], 'react/prefer-read-only-props': OFF, 'react/prefer-stateless-function': OFF, 'react/prop-types': OFF, // we use Flow instead, 'react/react-in-jsx-scope': WARN, 'react/require-default-props': OFF, 'react/require-optimization': OFF, 'react/require-render-return': ERROR, 'react/self-closing-comp': ERROR, 'react/sort-comp': [ ERROR, { // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/sort-comp.md order: [ 'type-annotations', 'static-methods', 'instance-variables', 'lifecycle', 'everything-else', 'rendering'], groups: { lifecycle: [ 'displayName', 'propTypes', 'contextTypes', 'childContextTypes', 'mixins', 'statics', 'defaultProps', 'constructor', 'getDefaultProps', 'state', 'getInitialState', 'getChildContext', 'getDerivedStateFromProps', // this is added 'getDerivedStateFromError', // this is added 'componentWillMount', 'UNSAFE_componentWillMount', 'componentDidMount', 'componentWillReceiveProps', 'UNSAFE_componentWillReceiveProps', 'shouldComponentUpdate', 'componentWillUpdate', 'UNSAFE_componentWillUpdate', 'getSnapshotBeforeUpdate', 'componentDidUpdate', 'componentDidCatch', 'componentWillUnmount'], rendering: ['/^render.+$/', 'render'] } }], 'react/sort-prop-types': OFF, 'react/state-in-constructor': OFF, 'react/static-property-placement': OFF, 'react/style-prop-object': NEXT_VERSION_ERROR, 'react/void-dom-elements-no-children': ERROR, // React Hooks (https://www.npmjs.com/package/eslint-plugin-react-hooks) 'react-hooks/rules-of-hooks': ERROR, 'react-hooks/exhaustive-deps': ERROR, // React Accessibility (https://github.com/evcohen/eslint-plugin-jsx-a11y) 'jsx-a11y/accessible-emoji': ERROR, 'jsx-a11y/alt-text': ERROR, 'jsx-a11y/anchor-has-content': OFF, 'jsx-a11y/anchor-is-valid': ERROR, 'jsx-a11y/aria-activedescendant-has-tabindex': OFF, 'jsx-a11y/aria-props': ERROR, 'jsx-a11y/aria-proptypes': ERROR, 'jsx-a11y/aria-role': ERROR, 'jsx-a11y/aria-unsupported-elements': ERROR, 'jsx-a11y/click-events-have-key-events': OFF, 'jsx-a11y/control-has-associated-label': OFF, 'jsx-a11y/heading-has-content': OFF, 'jsx-a11y/html-has-lang': ERROR, 'jsx-a11y/iframe-has-title': ERROR, 'jsx-a11y/img-redundant-alt': OFF, 'jsx-a11y/interactive-supports-focus': ERROR, 'jsx-a11y/label-has-associated-control': OFF, 'jsx-a11y/label-has-for': OFF, 'jsx-a11y/lang': ERROR, 'jsx-a11y/media-has-caption': OFF, 'jsx-a11y/mouse-events-have-key-events': OFF, 'jsx-a11y/no-access-key': ERROR, 'jsx-a11y/no-autofocus': [ERROR, { ignoreNonDOM: true }], 'jsx-a11y/no-distracting-elements': [ERROR, { elements: ['marquee', 'blink'] }], 'jsx-a11y/no-interactive-element-to-noninteractive-role': OFF, 'jsx-a11y/no-noninteractive-element-interactions': OFF, 'jsx-a11y/no-noninteractive-element-to-interactive-role': OFF, 'jsx-a11y/no-noninteractive-tabindex': OFF, 'jsx-a11y/no-onchange': OFF, 'jsx-a11y/no-redundant-roles': ERROR, 'jsx-a11y/no-static-element-interactions': OFF, 'jsx-a11y/role-has-required-aria-props': ERROR, 'jsx-a11y/role-supports-aria-props': ERROR, 'jsx-a11y/scope': ERROR, 'jsx-a11y/tabindex-no-positive': ERROR, // React Native (https://github.com/Intellicode/eslint-plugin-react-native) 'react-native/no-color-literals': OFF, 'react-native/no-inline-styles': OFF, 'react-native/no-raw-text': OFF, 'react-native/no-unused-styles': ERROR, 'react-native/sort-styles': OFF, 'react-native/split-platform-components': OFF, // Relay (https://github.com/relayjs/eslint-plugin-relay) 'relay/compat-uses-vars': OFF, // we do not use Relay Compat 'relay/generated-flow-types': ERROR, 'relay/graphql-naming': ERROR, 'relay/graphql-syntax': ERROR, 'relay/hook-required-argument': NEXT_VERSION_ERROR, 'relay/no-future-added-value': ERROR, 'relay/unused-fields': ERROR, // import (https://github.com/benmosher/eslint-plugin-import) 'import/default': OFF, 'import/dynamic-import-chunkname': OFF, // TODO: warn? 'import/export': ERROR, 'import/exports-last': OFF, 'import/extensions': [ERROR, 'never', { json: 'always' }], 'import/first': ERROR, 'import/group-exports': OFF, 'import/imports-first': OFF, 'import/named': OFF, // TODO: warn? seems to be broken 'import/namespace': OFF, 'import/newline-after-import': ERROR, 'import/no-absolute-path': ERROR, 'import/no-amd': ERROR, 'import/no-anonymous-default-export': [ ERROR, { allowArray: true, allowArrowFunction: false, allowAnonymousClass: false, allowAnonymousFunction: false, allowCallExpression: true, allowLiteral: true, allowObject: true }], 'import/no-commonjs': OFF, 'import/no-cycle': WARN, 'import/no-default-export': OFF, 'import/no-deprecated': OFF, 'import/no-duplicates': ERROR, 'import/no-dynamic-require': OFF, 'import/no-extraneous-dependencies': [ ERROR, { devDependencies: [ '**/*.test.js', '**/*.spec.js', '**/*.stories.js', '**/webpack.config.js', '**/metro.config.js'] }], 'import/no-internal-modules': OFF, 'import/no-mutable-exports': ERROR, 'import/no-namespace': OFF, 'import/no-named-as-default': OFF, 'import/no-named-as-default-member': OFF, 'import/no-named-default': ERROR, 'import/no-named-export': OFF, 'import/no-nodejs-modules': OFF, 'import/no-relative-parent-imports': OFF, 'import/no-restricted-paths': OFF, 'import/no-unassigned-import': OFF, 'import/no-unresolved': [ ERROR, { // compatible with Relay 'artifactDirectory' ignore: ['^__generated__/'] }], 'import/no-useless-path-segments': ERROR, 'import/no-webpack-loader-syntax': ERROR, 'import/max-dependencies': OFF, 'import/order': [ ERROR, { groups: [['builtin', 'external'], ['parent', 'sibling'], 'index'], 'newlines-between': 'always' }], 'import/prefer-default-export': OFF, 'import/no-self-import': ERROR, 'import/no-unused-modules': OFF, // TODO: warn? 'import/unambiguous': OFF, // TODO: warn? // monorepo (https://github.com/azz/eslint-plugin-monorepo) 'monorepo/no-internal-import': ERROR, 'monorepo/no-relative-import': ERROR, // Node.js (https://github.com/mysticatea/eslint-plugin-node) 'node/exports-style': OFF, 'node/file-extension-in-import': [ERROR, 'always', { '.js': 'never' }], 'node/no-callback-literal': WARN, // TODO: next version error (?) 'node/no-deprecated-api': ERROR, 'node/no-exports-assign': ERROR, 'node/no-extraneous-import': OFF, // see: import/no-extraneous-dependencies 'node/no-extraneous-require': OFF, // see: import/no-extraneous-dependencies 'node/no-missing-import': OFF, 'node/no-missing-require': ERROR, 'node/no-unpublished-bin': ERROR, 'node/no-unpublished-import': OFF, 'node/no-unpublished-require': OFF, 'node/no-unsupported-features/es-builtins': OFF, 'node/no-unsupported-features/es-syntax': OFF, 'node/no-unsupported-features/node-builtins': OFF, 'node/prefer-global/buffer': ERROR, 'node/prefer-global/console': ERROR, 'node/prefer-global/process': ERROR, 'node/prefer-global/text-decoder': OFF, 'node/prefer-global/text-encoder': OFF, 'node/prefer-global/url': ERROR, 'node/prefer-global/url-search-params': OFF, 'node/prefer-promises/dns': OFF, // TODO: WARN (?) 'node/prefer-promises/fs': OFF, // TODO: WARN (?) 'node/process-exit-as-throw': OFF, // TODO: WARN (?) 'node/shebang': ERROR, // Eslint comments (https://github.com/mysticatea/eslint-plugin-eslint-comments) 'eslint-comments/disable-enable-pair': OFF, 'eslint-comments/no-aggregating-enable': OFF, 'eslint-comments/no-duplicate-disable': ERROR, 'eslint-comments/no-restricted-disable': OFF, 'eslint-comments/no-unlimited-disable': OFF, // Relay disables generated files with unlimited scope 'eslint-comments/no-unused-disable': OFF, 'eslint-comments/no-unused-enable': ERROR, 'eslint-comments/no-use': OFF, // Relay Flow type imports 'relay-imports/no-values': ERROR, 'relay-imports/type-must-exist': ERROR, // Kiwi.com custom rules 'kiwicom-incubator/only-nullable-fields': ERROR, 'kiwicom-incubator/no-invalid-flow-annotations': ERROR };