.eslintrc

{
  "root": true,
  "extends": [
    "plugin:lit/recommended",
    "eslint:recommended",
    "plugin:jsdoc/recommended",
    "plugin:import/recommended",
    "plugin:import/typescript",
    "plugin:promise/recommended"
  ],
  "parser": "@babel/eslint-parser",
  "plugins": ["lit", "jsdoc", "import", "promise"],
  "env": {
    "es6": true,
    "browser": true,
    "node": true,
    "shared-node-browser": true
  },
  "parserOptions": {
    "ecmaVersion": "latest",
    "sourceType": "module",
    "requireConfigFile": false
  },
  "rules": {
    "curly": ["error", "multi-line"],
    "indent": ["error", 2, { "SwitchCase": 1, "MemberExpression": 1 }],
    "no-console": ["error", { "allow": ["info", "debug", "warn", "error"] }],
    "no-trailing-spaces": "warn",
    "no-unreachable-loop": "error",
    "no-unused-vars": "off",
    "no-var": "error",
    "prefer-const": "warn",
    "quotes": ["warn", "single"],
    "semi": ["error", "always"],
    "valid-typeof": ["error", { "requireStringLiterals": true }],
    "jsdoc/check-access": "warn",
    "jsdoc/check-indentation": "warn",
    "jsdoc/check-syntax": "warn",
    "jsdoc/check-tag-names": "off",
    "jsdoc/no-bad-blocks": "warn",
    "jsdoc/no-defaults": "off",
    "jsdoc/no-undefined-types": "off",
    "jsdoc/require-asterisk-prefix": "warn",
    "jsdoc/require-description": ["warn", { "descriptionStyle": "tag" }],
    "jsdoc/require-description-complete-sentence": ["warn",{ "abbreviations": ["etc", "e.g.", "i.e."] }],
    "jsdoc/require-hyphen-before-param-description": "warn",
    "jsdoc/require-jsdoc": "off",
    "import/first": "warn",
    "import/newline-after-import":"warn",
    "import/no-empty-named-blocks": "warn",
    "import/no-unresolved": "off",
    "promise/always-return": "off",
    "promise/catch-or-return": "off"
  }
}