.eslintrc.json

{
  "root": true,
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "prettier"
  ],
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2019,
    "sourceType": "module"
  },
  "plugins": [
    "@typescript-eslint",
    "svelte3",
    "html",
    "markdown"
  ],
  "overrides": [
    {
      "files": ["./*.js","tools/**/*.js","**/*.config.js","bin/**/*.js"],
      "env": {
        "node": true,
        "browser": false
      }
    },
    {
      "files": ["**/*.svelte"],
      "processor": "svelte3/svelte3",
      "rules": {
        "import/first": "off",
        "import/no-duplicates": "off",
        "import/no-mutable-exports": "off",
        "import/no-unresolved": "off"
      }
    },
    {
      "files": ["**/*.svx","**/*.md"],
      "processor": "markdown/markdown",
      "rules": {
        "no-undef": "off",
        "no-unused-vars": "off",
        "no-console": "off",
        "padded-blocks": "off"
      }
    },
    {
      "files": ["**/*.svx/*.**","**/*.md/*.**"],
      "rules": {
        "no-undef": "off",
        "no-unused-vars": "off",
        "no-console": "off",
        "padded-blocks": "off"
      }
    },
    {
      "files": [
        "**/*.test.js"
      ],
      "env": {
        "jest": true, // now **/*.svite.test.js files' env has both es6 *and* jest
        "node": true,
        "browser": true
      },
      // Can't extend in overrides: https://github.com/eslint/eslint/issues/8813
      // "extends": ["plugin:jest/recommended"]
      "plugins": ["jest"],
      "rules": {
        "jest/no-disabled-tests": "warn",
        "jest/no-focused-tests": "error",
        "jest/no-identical-title": "error",
        "jest/prefer-to-have-length": "warn",
        "jest/valid-expect": "error"
      }
    }
  ],
  "ignorePatterns": [
    "examples/svelte-preprocess-auto/src/App.svelte",
    "examples/typescript/svelte-preprocess-auto/src/App.svelte",
    "CHANGELOG.md"
  ]
}