.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",
    "plugin:prettier/recommended",
  ],
  rules: {
    // override/add rules settings here, such as:
    // 'vue/no-unused-vars': 'error'
    "object-shorthand": ["error", "always"],
    "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",
    "react-redux/useSelector-prefer-selectors": "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",
    "prettier/prettier": "error",
    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", "prettier"],
}