.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "google",
    "eslint-config-airbnb-base",
    "plugin:wc/best-practice",
    "plugin:lit/recommended"
  ],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module"
  },
  "env": {
    "browser": true
  },
  "rules": {
    "valid-jsdoc": "error",
    "require-jsdoc": "error",
    "import/prefer-default-export": "off",
    "import/extensions": [
      "error",
      {
        "mjs": "ignorePackages"
      }
    ],
    "class-methods-use-this": [
      "error",
      {
        "exceptMethods": [
          "render"
        ]
      }
    ],
    "import/no-extraneous-dependencies": [
      "error",
      {
        "peerDependencies": true,
        "devDependencies": [
          "src/**/*.test.js",
          "karma.conf.js",
          "rollup.config.js",
          "rollup.test.config.js",
          "service-worker.config.js",
          "index.config.js",
          "deploy.js"
        ]
      }
    ]
  },
  "overrides": [
    {
      "files": [
        "*.test.js"
      ],
      "rules": {
        "no-use-before-define": "off",
        "no-useless-escape": "off",
        "no-unused-expressions": "off",
        "import/no-extraneous-dependencies": "off",
        "jsdoc/require-jsdoc": "off",
        "no-unused-vars": [
          "error",
          {
            "varsIgnorePattern": "it|expect|describe|beforeEach|afterEach"
          }
        ]
      }
    }
  ],
  "plugins": [
    "html",
    "wc",
    "lit"
  ],
  "globals": {
    "ShadyCSS": true,
    "describe": true,
    "beforeEach": true,
    "afterEach": true,
    "it": true
  }
}