.eslintrc.js

// cspell:words setstate, eqeqeq, iife
/* eslint-env node */
/*
    ESLint Rule Documentation Sites
        https://eslint.org/docs/rules/
        https://github.com/yannickcr/eslint-plugin-react
        https://github.com/benmosher/eslint-plugin-import
        https://github.com/testing-library/eslint-plugin-testing-library
        https://github.com/jest-community/eslint-plugin-jest
        https://github.com/typescript-eslint/typescript-eslint/tree/master/packages/eslint-plugin
        https://github.com/jsx-eslint/eslint-plugin-jsx-a11y
*/

const path = require("path");

module.exports = {
  parser: "@typescript-eslint/parser", // Specifies the ESLint parser
  plugins: ["@typescript-eslint", "react", "simple-import-sort"],
  env: {
    browser: true,
    jest: true,
  },
  extends: [
    "plugin:@typescript-eslint/recommended", // Uses the recommended rules from the @typescript-eslint/eslint-plugin
    "prettier",
  ],
  parserOptions: {
    project: path.resolve(__dirname, "./tsconfig.json"),
    tsconfigRootDir: __dirname,
    ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
    sourceType: "module", // Allows for the use of imports
    ecmaFeatures: {
      jsx: true, // Allows for the parsing of JSX
    },
  },
  rules: {
    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
    // e.g. "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/no-unused-vars": "off",
    "@typescript-eslint/ban-ts-comment": "off",
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/ban-types": "off",
    // These rules don't add much value, are better covered by TypeScript and good definition files
    "react/no-direct-mutation-state": "off",
    "react/no-deprecated": "off",
    "react/no-string-refs": "off",
    "react/require-render-return": "off",
    "simple-import-sort/imports": "error",
    "simple-import-sort/exports": "error",
    "@typescript-eslint/no-empty-interface": "off",

    "react/jsx-filename-extension": [
      "warn",
      {
        extensions: [".jsx", ".tsx"],
      },
    ], // also want to use with ".tsx"
    "react/prop-types": "off", // Is this incompatible with TS props type?
  },
  settings: {
    react: {
      version: "detect", // Tells eslint-plugin-react to automatically detect the version of React to use
    },
  },
  overrides: [
    // override "simple-import-sort" config
    {
      files: ["*.js", "*.jsx", "*.ts", "*.tsx"],
      rules: {
        "simple-import-sort/imports": [
          "error",
          {
            groups: [
              // Packages `react` related packages come first.
              ["^react", "^@?\\w"],
              // Internal packages.
              ["^(@|components)(/.*|$)"],
              // Side effect imports.
              ["^\\u0000"],
              // Parent imports. Put `..` last.
              ["^\\.\\.(?!/?$)", "^\\.\\./?$"],
              // Other relative imports. Put same-folder imports and `.` last.
              ["^\\./(?=.*/)(?!/?$)", "^\\.(?!/?$)", "^\\./?$"],
              // Style imports.
              ["^.+\\.?(css)$"],
            ],
          },
        ],
      },
    },
  ],
};