.eslintrc.json

{
  "env": {
    "browser": false,
    "es6": true,
    "node": true
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "tsconfig.json",
    "sourceType": "module",
    "ecmaVersion": 2020
  },
  "plugins": [
    "@typescript-eslint",
    "jest"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:jest/recommended",
    "prettier"
  ],
  "rules": {
    // The following rule is enabled only to supplement the inline suppression
    // examples, and because it is not a recommended rule, you should either
    // disable it, or understand what it enforces.
    // https://typescript-eslint.io/rules/explicit-function-return-type/
    "@typescript-eslint/explicit-function-return-type": "warn",
    "@typescript-eslint/no-empty-function": "warn",
    "@typescript-eslint/no-inferrable-types": "off",
    "@typescript-eslint/no-unused-vars": "warn",
    // @todo temporarily turn off
    "jest/no-export": "off",
    // @todo changing this temporarily to warning (from error, which is the default)
    "prefer-const": "warn"
  }
}