.eslintrc.js

module.exports = {
  parser: "@typescript-eslint/parser",
  extends: [
    "eslint:recommended",
    "plugin:import/errors",
    "plugin:import/typescript",
    "prettier",
    "prettier/@typescript-eslint",
  ],
  plugins: ["jest", "@typescript-eslint", "simple-import-sort", "import"],
  parserOptions: {
    ecmaVersion: 2018,
    sourceType: "module",
  },
  env: {
    node: true,
    jest: true,
    es6: true,
  },
  rules: {
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        argsIgnorePattern: "^_",
        varsIgnorePattern: "^_",
        args: "after-used",
        ignoreRestSiblings: true,
      },
    ],
    curly: "error",
    "no-else-return": 0,
    "no-return-assign": [2, "except-parens"],
    "no-underscore-dangle": 0,
    "jest/no-focused-tests": 2,
    "jest/no-identical-title": 2,
    camelcase: 0,
    "prefer-arrow-callback": [
      "error",
      {
        allowNamedFunctions: true,
      },
    ],
    "class-methods-use-this": 0,
    "no-restricted-syntax": 0,
    "no-param-reassign": [
      "error",
      {
        props: false,
      },
    ],

    "arrow-body-style": 0,
    "no-nested-ternary": 0,

    /*
     * simple-import-sort seems to be the most stable import sorting currently,
     * disable others
     */
    "simple-import-sort/imports": "error",
    "simple-import-sort/exports": "error",
    "sort-imports": "off",
    "import/order": "off",

    "import/no-deprecated": "warn",
    "import/no-duplicates": "error",
  },
};