.eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true,
    browser: true,
    jest: true
  },
  parserOptions: {
    parser: '@typescript-eslint/parser',
    sourceType: "module",
    ecmaVersion: 2018,
    ecmaFeatures: {
      jsx: true,
    },

    // typescript-eslint specific options
    warnOnUnsupportedTypeScriptVersion: true,
  },
  extends: [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:react-redux/recommended",
    'plugin:@typescript-eslint/recommended'
  ],
  rules: {
    // override/add rules settings here, such as:
    // 'vue/no-unused-vars': 'error'
    "react/prop-types": 'off',
    // Add TypeScript specific rules (and turn off ESLint equivalents)
    '@typescript-eslint/consistent-type-assertions': 'warn',
    'no-array-constructor': 'off',
    '@typescript-eslint/no-array-constructor': 'warn',
    'no-redeclare': 'off',
    '@typescript-eslint/no-redeclare': 'warn',
    'no-use-before-define': 'off',
    '@typescript-eslint/no-use-before-define': [
       'warn',
       {
         functions: false,
         classes: false,
         variables: false,
         typedefs: false,
       },
     ],
    'no-unused-expressions': 'off',
    '@typescript-eslint/no-unused-expressions': [
      'error',
      {
        allowShortCircuit: true,
        allowTernary: true,
        allowTaggedTemplates: true,
      },
    ],
    'no-unused-vars': 'off',
    '@typescript-eslint/no-unused-vars': [
      'warn',
      {
        args: 'none',
        ignoreRestSiblings: true,
      },
    ],
    'no-useless-constructor': 'off',
    '@typescript-eslint/no-useless-constructor': 'warn',
    'react/no-unused-prop-types': 'off',
    'react-redux/no-unused-prop-types': 'warn',
    'react-redux/prefer-separate-component-file': 'off',
    semi: [ 'warn', 'never' ]
  },
  settings: {
    react: {
      createClass: "createReactClass", // Regex for Component Factory to use,
                                         // default to "createReactClass"
      pragma: "React",  // Pragma to use, default to "React"
      fragment: "Fragment",  // Fragment to use (may be a property of <pragma>), default to "Fragment"
      version: "detect", // React version. "detect" automatically picks the version you have installed.
                           // You can also use `16.0`, `16.3`, etc, if you want to override the detected value.
                           // It will default to "latest" and warn if missing, and to "detect" in the future
      flowVersion: "0.53" // Flow version
    },
    propWrapperFunctions: [
        // The names of any function used to wrap propTypes, e.g. `forbidExtraProps`. If this isn't set, any propTypes wrapped in a function will be skipped.
        "forbidExtraProps",
        {"property": "freeze", "object": "Object"},
        {"property": "myFavoriteWrapper"},
        // for rules that check exact prop wrappers
        {"property": "forbidExtraProps", "exact": true}
    ],
    componentWrapperFunctions: [
        // The name of any function used to wrap components, e.g. Mobx `observer` function. If this isn't set, components wrapped by these functions will be skipped.
        "observer", // `property`
        {"property": "styled"}, // `object` is optional
        {"property": "observer", "object": "Mobx"},
        {"property": "observer", "object": "<pragma>"} // sets `object` to whatever value `settings.react.pragma` is set to
    ],
    formComponents: [
      // Components used as alternatives to <form> for forms, eg. <Form endpoint={ url } />
      "CustomForm",
      {"name": "Form", "formAttribute": "endpoint"}
    ],
    linkComponents: [
      // Components used as alternatives to <a> for linking, eg. <Link to={ url } />
      "Hyperlink",
      {"name": "Link", "linkAttribute": "to"}
    ]
  },
  plugins: [
     "react",
     "react-redux",
     "@typescript-eslint"
   ]
}