.eslintrc.json

{
  "env": {
    "browser": true,
    "node": true,
    "es6": true,
    "jest/globals": true
  },
  "parserOptions": {
    "sourceType": "module",
    "ecmaVersion": 2020
  },
  "extends": ["eslint:recommended", "prettier"],
  "rules": {
    "no-unused-vars": ["warn", { "argsIgnorePattern": "^_" }],
    "arrow-body-style": "error",
    "arrow-parens": ["warn", "as-needed"],
    "arrow-spacing": "error",
    "generator-star-spacing": "error",
    "no-duplicate-imports": "error",
    "no-useless-computed-key": "error",
    "no-useless-constructor": "error",
    "no-useless-rename": "error",
    "no-var": "error",
    "object-shorthand": "error",
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "rest-spread-spacing": "error",
    "template-curly-spacing": "error",
    "yield-star-spacing": "error"
  },
  "plugins": ["jest"]
}