.eslintrc.js

module.exports = {
  parser: "@typescript-eslint/parser",
  extends: [
    "plugin:@typescript-eslint/recommended",
    "prettier/@typescript-eslint",
    "prettier",
    "plugin:prettier/recommended",
  ],
  plugins: ["@typescript-eslint", "simple-import-sort"],
  parserOptions: {
    project: "./tsconfig.json",
    sourceType: "module",
    ecmaVersion: 2018,
    tsconfigRootDir: "./",
  },
  env: {
    node: true,
  },
  rules: {
    "prettier/prettier": [
      "error",
      {
        singleQuote: true,
        printWidth: 90,
        arrowParens: "avoid",
        bracketSpacing: true,
      },
    ],
    "@typescript-eslint/no-unused-vars-experimental": [
      "warn",
      { ignoredNamesRegex: "^_" },
    ],
    "@typescript-eslint/no-unused-vars": "off", // in favor of the one above so we can ignore vars prefixed with _
  },
};