.eslintrc.json

{
  "extends": ["eslint:recommended", "plugin:prettier/recommended"],
  "parser": "@babel/eslint-parser",
  "parserOptions": {
    "ecmaVersion": "latest",
    "requireConfigFile": false
  },
  "env": {
    "es6": true,
    "browser": true,
    "node": true
  },
  "rules": {
    "no-console": 2,
    "curly": 2,
    "dot-notation": 1,
    "eqeqeq": 2,
    "no-alert": 2,
    "no-caller": 2,
    "no-eval": 2,
    "no-extra-bind": 2,
    "no-implied-eval": 2,
    "no-multi-spaces": 2,
    "no-with": 2,
    "no-shadow": 2,
    "no-shadow-restricted-names": 2,
    "brace-style": ["error", "1tbs"],
    "camelcase": 2,
    "comma-style": ["error", "last"],
    "eol-last": 2,
    "key-spacing": 2,
    "new-cap": 1,
    "no-array-constructor": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multiple-empty-lines": 2,
    "semi-spacing": 2,
    "no-spaced-func": 2,
    "no-trailing-spaces": 2,
    "space-before-blocks": 2,
    "spaced-comment": 1,
    "no-var": 2
  },
  "overrides": [
    {
      "files": ["**/*.ts"],
      "parser": "@typescript-eslint/parser",
      "plugins": ["@typescript-eslint"],
      "extends": ["plugin:@typescript-eslint/recommended"]
    },
    {
      "files": ["test/**/*.{js,ts}", "*.spec.{js,ts}", "*.stories.{js,ts}"],
      "plugins": [
        "jest",
        "testing-library",
        "jest-dom"
      ],
      "extends": ["plugin:jest-dom/recommended"],
      "env": {
        "jest/globals": true
      },
      "rules": {
        "no-console": 0,
        "no-shadow": 0,
        "@typescript-eslint/no-explicit-any": 0
      }
    }
  ]
}