.eslintrc.cjs

module.exports = {
  env: {
    es2021: true,
    node: true,
    browser: true,
    mocha: true,
  },
  parser: '@babel/eslint-parser',
  extends: ['eslint:recommended', 'prettier'],
  plugins: ['react'],
  globals: {
    Promise: false,
    describe: true,
    after: true,
    it: true,
    fetch: true,
  },
  parserOptions: {
    sourceType: 'module',
  },
  rules: {
    eqeqeq: [2, 'allow-null'],

    // ###########################################################
    // ### Semantics / Performance impacting
    // ###########################################################
    // babel inserts `'use strict';` for us
    strict: 0,

    'no-redeclare': [2, { builtinGlobals: false }],

    // If a class method does not use this, it can safely be made a static function.
    // http://eslint.org/docs/rules/class-methods-use-this
    'class-methods-use-this': ['off'],

    // ###########################################################
    // ### Style
    // ###########################################################
    indent: ['off', 2],
    'linebreak-style': ['error', 'unix'],
    quotes: ['error', 'single', { avoidEscape: true, allowTemplateLiterals: true }],
    semi: ['error', 'always'],
    'no-console': ['error', { allow: ['warn', 'error'] }],

    // ###########################################################
    // ### React
    // ###########################################################
    // Specify whether double or single quotes should be used in JSX attributes
    // http://eslint.org/docs/rules/jsx-quotes
    'jsx-quotes': ['error', 'prefer-double'],

    // Prevent missing displayName in a React component definition
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/display-name.md
    'react/display-name': ['off'],

    // Forbid certain propTypes (any, array, object)
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/forbid-prop-types.md
    'react/forbid-prop-types': 'off',

    // Validate closing bracket location in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-closing-bracket-location.md
    'react/jsx-closing-bracket-location': ['off'],

    // Enforce or disallow spaces inside of curly braces in JSX attributes
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-curly-spacing.md
    'react/jsx-curly-spacing': ['off'],

    // Enforce event handler naming conventions in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-handler-names.md
    'react/jsx-handler-names': [
      'off',
      {
        eventHandlerPrefix: 'handle',
        eventHandlerPropPrefix: 'on',
      },
    ],

    // Validate props indentation in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-indent-props.md
    'react/jsx-indent-props': 'off',

    // Validate JSX has key prop when in array or iterator
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-key.md
    'react/jsx-key': 'off',

    // Limit maximum of props on a single line in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-max-props-per-line.md
    'react/jsx-max-props-per-line': ['off'],

    // Prevent usage of .bind() in JSX props
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-bind.md
    'react/jsx-no-bind': [
      'error',
      {
        ignoreRefs: true,
        allowArrowFunctions: true,
        allowBind: false,
      },
    ],

    // Prevent duplicate props in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-duplicate-props.md
    'react/jsx-no-duplicate-props': ['error', { ignoreCase: true }],

    // Prevent usage of unwrapped JSX strings
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-literals.md
    'react/jsx-no-literals': 'off',

    // Disallow undeclared variables in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-undef.md
    'react/jsx-no-undef': 'error',

    // Enforce PascalCase for user-defined JSX components
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-pascal-case.md
    'react/jsx-pascal-case': [
      'error',
      {
        allowAllCaps: true,
        ignore: [],
      },
    ],

    // Enforce propTypes declarations alphabetical sorting
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/sort-prop-types.md
    'react/sort-prop-types': [
      'off',
      {
        ignoreCase: true,
        callbacksLast: false,
        requiredFirst: false,
      },
    ],

    // Deprecated in favor of react/jsx-sort-props
    'react/jsx-sort-prop-types': 'off',

    // Enforce props alphabetical sorting
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-sort-props.md
    'react/jsx-sort-props': 'off',

    // Prevent React to be incorrectly marked as unused
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-uses-react.md
    'react/jsx-uses-react': 'error',

    // Prevent variables used in JSX to be incorrectly marked as unused
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-uses-vars.md
    'react/jsx-uses-vars': 'error',

    // Prevent usage of dangerous JSX properties
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-danger.md
    'react/no-danger': 'warn',

    // Prevent usage of deprecated methods
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-deprecated.md
    'react/no-deprecated': ['error'],

    // Prevent usage of setState in componentDidMount
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-did-mount-set-state.md
    'react/no-did-mount-set-state': ['error'],

    // Prevent usage of setState in componentDidUpdate
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-did-update-set-state.md
    'react/no-did-update-set-state': ['warn'],

    // Prevent direct mutation of this.state
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-direct-mutation-state.md
    'react/no-direct-mutation-state': 'off',

    // Prevent usage of isMounted
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-is-mounted.md
    'react/no-is-mounted': 'error',

    // Prevent usage of setState
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-set-state.md
    'react/no-set-state': 'off',

    // Prevent using string references
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-string-refs.md
    'react/no-string-refs': 'warn',

    // Prevent usage of unknown DOM property
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-unknown-property.md
    'react/no-unknown-property': 'error',

    // Prevent missing props validation in a React component definition
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/prop-types.md
    'react/prop-types': ['error', { ignore: [], customValidators: [], skipUndeclared: true }],

    // Prevent missing React when using JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/react-in-jsx-scope.md
    'react/react-in-jsx-scope': 'error',

    // Restrict file extensions that may be required
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/require-extension.md
    // deprecated in favor of import/extensions
    'react/require-extension': ['off', { extensions: ['.jsx', '.js'] }],

    // Require render() methods to return something
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/require-render-return.md
    'react/require-render-return': 'error',

    // Prevent extra closing tags for components without children
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/self-closing-comp.md
    'react/self-closing-comp': 'warn',

    // Enforce component methods order
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/sort-comp.md
    'react/sort-comp': 'off',

    // Prevent missing parentheses around multilines JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-wrap-multilines.md
    'react/jsx-wrap-multilines': [
      'warn',
      {
        declaration: true,
        assignment: true,
        return: true,
      },
    ],
    'react/wrap-multilines': 'off', // deprecated version

    // Require that the first prop in a JSX element be on a new line when the element is multiline
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-first-prop-new-line.md
    'react/jsx-first-prop-new-line': ['off'],

    // Enforce spacing around jsx equals signs
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-equals-spacing.md
    'react/jsx-equals-spacing': ['warn', 'never'],

    // Disallow target="_blank" on links
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-target-blank.md
    'react/jsx-no-target-blank': 'error',

    // only .jsx files may have JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-filename-extension.md
    'react/jsx-filename-extension': ['error', { extensions: ['.jsx'] }],

    // prevent accidental JS comments from being injected into JSX as text
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-comment-textnodes.md
    'react/jsx-no-comment-textnodes': 'error',
    'react/no-comment-textnodes': 'off', // deprecated version

    // disallow using React.render/ReactDOM.render's return value
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-render-return-value.md
    'react/no-render-return-value': 'error',

    // require a shouldComponentUpdate method, or PureRenderMixin
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/require-optimization.md
    'react/require-optimization': ['off', { allowDecorators: [] }],

    // warn against using findDOMNode()
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-find-dom-node.md
    'react/no-find-dom-node': 'warn',

    // Forbid certain props on Components
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/forbid-component-props.md
    'react/forbid-component-props': ['off', { forbid: [] }],

    // Prevent problem with children and props.dangerouslySetInnerHTML
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-danger-with-children.md
    'react/no-danger-with-children': 'error',

    // Prevent unused propType definitions
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-unused-prop-types.md
    'react/no-unused-prop-types': [
      'warn',
      {
        customValidators: [],
        skipShapeProps: true,
      },
    ],

    // Require style prop value be an object or var
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/style-prop-object.md
    'react/style-prop-object': 'error',

    // Prevent passing of children as props
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-children-prop.md
    'react/no-children-prop': 'warn',

  },
};