.eslintrc.js

module.exports = {
    parser: "@typescript-eslint/parser",
    parserOptions: {
      ecmaVersion: 2018,
      project: "./tsconfig.json",
      tsconfigRootDir: __dirname,
    },
    plugins: ["@typescript-eslint", "simple-import-sort"],
    extends: [
      "eslint:recommended",
      "react-app",
      "plugin:@typescript-eslint/recommended",
      "prettier/@typescript-eslint",
      "plugin:prettier/recommended",
    ],
    rules: {
      curly: ["warn", "multi-line", "consistent"],
      "no-empty": "off",
      "no-console": [
        "warn",
        {
          allow: ["error", "info", "warn"],
        },
      ],
      "no-param-reassign": "warn",
      "prefer-const": "warn",
      "sort-imports": "off", // we use the simple-import-sort plugin instead
      "spaced-comment": ["warn", "always", { line: { markers: ["/ <reference"] } }],
      "simple-import-sort/sort": "warn",
      "@typescript-eslint/explicit-function-return-type": [
        "error",
        {
          allowExpressions: true,
        },
      ],
      "@typescript-eslint/no-empty-function": "off",
      "@typescript-eslint/no-empty-interface": "off",
      "@typescript-eslint/no-explicit-any": "off",
      "@typescript-eslint/no-unnecessary-type-assertion": "warn",
    },
    overrides: [
      {
        files: "**/*.js",
        rules: {
          "@typescript-eslint/no-var-requires": "off",
          "@typescript-eslint/explicit-function-return-type": "off",
        },
      },
    ],
    settings: {
      react: {
        version: "detect", // Tells eslint-plugin-react to automatically detect the version of React to use
      },
    },
  };