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291 lines
9.3 KiB
291 lines
9.3 KiB
/** |
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* Copyright (c) 2015-present, Facebook, Inc. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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*/ |
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'use strict'; |
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// Inspired by https://github.com/airbnb/javascript but less opinionated. |
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// We use eslint-loader so even warnings are very visible. |
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// This is why we prefer to use "WARNING" level for potential errors, |
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// and we try not to use "ERROR" level at all. |
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// In the future, we might create a separate list of rules for production. |
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// It would probably be more strict. |
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// The ESLint browser environment defines all browser globals as valid, |
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// even though most people don't know some of them exist (e.g. `name` or `status`). |
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// This is dangerous as it hides accidentally undefined variables. |
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// We blacklist the globals that we deem potentially confusing. |
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// To use them, explicitly reference them, e.g. `window.name` or `window.status`. |
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const restrictedGlobals = require('confusing-browser-globals'); |
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module.exports = { |
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extends: [require.resolve('./base')], |
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plugins: ['import', 'flowtype', 'jsx-a11y', 'react-hooks'], |
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overrides: [ |
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{ |
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files: ['**/*.ts?(x)'], |
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parser: '@typescript-eslint/parser', |
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parserOptions: { |
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ecmaVersion: 2018, |
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sourceType: 'module', |
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ecmaFeatures: { |
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jsx: true, |
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}, |
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// typescript-eslint specific options |
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warnOnUnsupportedTypeScriptVersion: true, |
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}, |
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plugins: ['@typescript-eslint'], |
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// If adding a typescript-eslint version of an existing ESLint rule, |
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// make sure to disable the ESLint rule here. |
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rules: { |
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// TypeScript's `noFallthroughCasesInSwitch` option is more robust (#6906) |
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'default-case': 'off', |
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// 'tsc' already handles this (https://github.com/typescript-eslint/typescript-eslint/issues/291) |
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'no-dupe-class-members': 'off', |
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// 'tsc' already handles this (https://github.com/typescript-eslint/typescript-eslint/issues/477) |
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'no-undef': 'off', |
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// Add TypeScript specific rules (and turn off ESLint equivalents) |
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'@typescript-eslint/consistent-type-assertions': 'warn', |
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'no-array-constructor': 'off', |
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'@typescript-eslint/no-array-constructor': 'warn', |
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'no-redeclare': 'off', |
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'@typescript-eslint/no-redeclare': 'warn', |
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'no-use-before-define': 'off', |
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'@typescript-eslint/no-use-before-define': [ |
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'warn', |
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{ |
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functions: false, |
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classes: false, |
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variables: false, |
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typedefs: false, |
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}, |
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], |
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'no-unused-expressions': 'off', |
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'@typescript-eslint/no-unused-expressions': [ |
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'error', |
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{ |
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allowShortCircuit: true, |
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allowTernary: true, |
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allowTaggedTemplates: true, |
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}, |
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], |
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'no-unused-vars': 'off', |
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'@typescript-eslint/no-unused-vars': [ |
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'warn', |
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{ |
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args: 'none', |
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ignoreRestSiblings: true, |
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}, |
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], |
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'no-useless-constructor': 'off', |
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'@typescript-eslint/no-useless-constructor': 'warn', |
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}, |
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}, |
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], |
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// NOTE: When adding rules here, you need to make sure they are compatible with |
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// `typescript-eslint`, as some rules such as `no-array-constructor` aren't compatible. |
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rules: { |
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// http://eslint.org/docs/rules/ |
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'array-callback-return': 'warn', |
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'default-case': ['warn', { commentPattern: '^no default$' }], |
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'dot-location': ['warn', 'property'], |
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eqeqeq: ['warn', 'smart'], |
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'new-parens': 'warn', |
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'no-array-constructor': 'warn', |
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'no-caller': 'warn', |
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'no-cond-assign': ['warn', 'except-parens'], |
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'no-const-assign': 'warn', |
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'no-control-regex': 'warn', |
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'no-delete-var': 'warn', |
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'no-dupe-args': 'warn', |
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'no-dupe-class-members': 'warn', |
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'no-dupe-keys': 'warn', |
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'no-duplicate-case': 'warn', |
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'no-empty-character-class': 'warn', |
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'no-empty-pattern': 'warn', |
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'no-eval': 'warn', |
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'no-ex-assign': 'warn', |
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'no-extend-native': 'warn', |
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'no-extra-bind': 'warn', |
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'no-extra-label': 'warn', |
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'no-fallthrough': 'warn', |
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'no-func-assign': 'warn', |
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'no-implied-eval': 'warn', |
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'no-invalid-regexp': 'warn', |
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'no-iterator': 'warn', |
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'no-label-var': 'warn', |
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'no-labels': ['warn', { allowLoop: true, allowSwitch: false }], |
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'no-lone-blocks': 'warn', |
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'no-loop-func': 'warn', |
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'no-mixed-operators': [ |
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'warn', |
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{ |
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groups: [ |
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['&', '|', '^', '~', '<<', '>>', '>>>'], |
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['==', '!=', '===', '!==', '>', '>=', '<', '<='], |
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['&&', '||'], |
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['in', 'instanceof'], |
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], |
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allowSamePrecedence: false, |
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}, |
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], |
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'no-multi-str': 'warn', |
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'no-global-assign': 'warn', |
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'no-unsafe-negation': 'warn', |
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'no-new-func': 'warn', |
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'no-new-object': 'warn', |
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'no-new-symbol': 'warn', |
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'no-new-wrappers': 'warn', |
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'no-obj-calls': 'warn', |
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'no-octal': 'warn', |
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'no-octal-escape': 'warn', |
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'no-redeclare': 'warn', |
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'no-regex-spaces': 'warn', |
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'no-restricted-syntax': ['warn', 'WithStatement'], |
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'no-script-url': 'warn', |
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'no-self-assign': 'warn', |
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'no-self-compare': 'warn', |
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'no-sequences': 'warn', |
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'no-shadow-restricted-names': 'warn', |
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'no-sparse-arrays': 'warn', |
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'no-template-curly-in-string': 'warn', |
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'no-this-before-super': 'warn', |
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'no-throw-literal': 'warn', |
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'no-undef': 'error', |
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'no-restricted-globals': ['error'].concat(restrictedGlobals), |
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'no-unreachable': 'warn', |
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'no-unused-expressions': [ |
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'error', |
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{ |
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allowShortCircuit: true, |
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allowTernary: true, |
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allowTaggedTemplates: true, |
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}, |
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], |
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'no-unused-labels': 'warn', |
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'no-unused-vars': [ |
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'warn', |
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{ |
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args: 'none', |
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ignoreRestSiblings: true, |
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}, |
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], |
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'no-use-before-define': [ |
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'warn', |
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{ |
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functions: false, |
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classes: false, |
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variables: false, |
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}, |
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], |
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'no-useless-computed-key': 'warn', |
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'no-useless-concat': 'warn', |
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'no-useless-constructor': 'warn', |
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'no-useless-escape': 'warn', |
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'no-useless-rename': [ |
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'warn', |
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{ |
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ignoreDestructuring: false, |
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ignoreImport: false, |
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ignoreExport: false, |
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}, |
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], |
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'no-with': 'warn', |
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'no-whitespace-before-property': 'warn', |
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'react-hooks/exhaustive-deps': 'warn', |
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'require-yield': 'warn', |
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'rest-spread-spacing': ['warn', 'never'], |
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strict: ['warn', 'never'], |
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'unicode-bom': ['warn', 'never'], |
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'use-isnan': 'warn', |
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'valid-typeof': 'warn', |
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'no-restricted-properties': [ |
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'error', |
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{ |
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object: 'require', |
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property: 'ensure', |
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message: |
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'Please use import() instead. More info: https://facebook.github.io/create-react-app/docs/code-splitting', |
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}, |
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{ |
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object: 'System', |
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property: 'import', |
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message: |
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'Please use import() instead. More info: https://facebook.github.io/create-react-app/docs/code-splitting', |
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}, |
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], |
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'getter-return': 'warn', |
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// https://github.com/benmosher/eslint-plugin-import/tree/master/docs/rules |
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'import/first': 'error', |
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'import/no-amd': 'error', |
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'import/no-anonymous-default-export': 'warn', |
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'import/no-webpack-loader-syntax': 'error', |
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// https://github.com/yannickcr/eslint-plugin-react/tree/master/docs/rules |
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'react/forbid-foreign-prop-types': ['warn', { allowInPropTypes: true }], |
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'react/jsx-no-comment-textnodes': 'warn', |
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'react/jsx-no-duplicate-props': 'warn', |
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'react/jsx-no-target-blank': 'warn', |
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'react/jsx-no-undef': 'error', |
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'react/jsx-pascal-case': [ |
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'warn', |
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{ |
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allowAllCaps: true, |
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ignore: [], |
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}, |
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], |
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'react/no-danger-with-children': 'warn', |
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// Disabled because of undesirable warnings |
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// See https://github.com/facebook/create-react-app/issues/5204 for |
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// blockers until its re-enabled |
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// 'react/no-deprecated': 'warn', |
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'react/no-direct-mutation-state': 'warn', |
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'react/no-is-mounted': 'warn', |
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'react/no-typos': 'error', |
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'react/require-render-return': 'error', |
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'react/style-prop-object': 'warn', |
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// https://github.com/evcohen/eslint-plugin-jsx-a11y/tree/master/docs/rules |
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'jsx-a11y/alt-text': 'warn', |
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'jsx-a11y/anchor-has-content': 'warn', |
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'jsx-a11y/anchor-is-valid': [ |
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'warn', |
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{ |
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aspects: ['noHref', 'invalidHref'], |
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}, |
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], |
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'jsx-a11y/aria-activedescendant-has-tabindex': 'warn', |
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'jsx-a11y/aria-props': 'warn', |
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'jsx-a11y/aria-proptypes': 'warn', |
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'jsx-a11y/aria-role': ['warn', { ignoreNonDOM: true }], |
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'jsx-a11y/aria-unsupported-elements': 'warn', |
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'jsx-a11y/heading-has-content': 'warn', |
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'jsx-a11y/iframe-has-title': 'warn', |
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'jsx-a11y/img-redundant-alt': 'warn', |
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'jsx-a11y/no-access-key': 'warn', |
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'jsx-a11y/no-distracting-elements': 'warn', |
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'jsx-a11y/no-redundant-roles': 'warn', |
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'jsx-a11y/role-has-required-aria-props': 'warn', |
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'jsx-a11y/role-supports-aria-props': 'warn', |
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'jsx-a11y/scope': 'warn', |
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// https://github.com/facebook/react/tree/main/packages/eslint-plugin-react-hooks |
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'react-hooks/rules-of-hooks': 'error', |
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// https://github.com/gajus/eslint-plugin-flowtype |
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'flowtype/define-flow-type': 'warn', |
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'flowtype/require-valid-file-annotation': 'warn', |
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'flowtype/use-flow-type': 'warn', |
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}, |
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};
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