.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "jest/globals": true,
    "node": true
  },
  "extends": ["eslint:recommended"],
  "parserOptions": {
    "ecmaVersion": 2019,
    "sourceType": "module"
  },
  "plugins": ["jest", "svelte3"],
  "overrides": [
    {
      "files": ["**/*.svelte"],
      "processor": "svelte3/svelte3"
    }
  ]
}