.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended", // Uses the recommended rules from the @typescript-eslint/eslint-plugin
    "plugin:lit/recommended",
    "google",
    "prettier/@typescript-eslint", // Uses eslint-config-prettier to disable ESLint rules
    // from @typescript-eslint/eslint-plugin that would conflict with prettier
    "plugin:prettier/recommended" // Enables eslint-plugin-prettier and eslint-config-prettier.
    //This will display prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "env": {
    "browser": true,
    "node": true,
    "es6": true
  },
  "plugins": [
    "@typescript-eslint",
    "lit",
    "prettier"
  ],
  "rules": {
    "prettier/prettier": "error",
    "lit/attribute-value-entities": "off",
    "linebreak-style": "off",
    "no-irregular-whitespace": [
      "error",
      {
        "skipTemplates": true
      }
    ],
    "@typescript-eslint/no-object-literal-type-assertion": "off",
    "padded-blocks": "off",
    "brace-style": "off",
    "new-cap": [
      "error",
      {
        "capIsNewExceptions": [
          "GestureEventListeners"
        ],
        "capIsNewExceptionPattern": "^Etools..|..Mixin$"
      }
    ],
    "no-var": "off",
    "require-jsdoc": "off",
    "valid-jsdoc": "off",
    "comma-dangle": [
      "error",
      "never"
    ],
    "max-len": [
      "error",
      {
        "code": 120,
        "ignoreUrls": true
      }
    ],
    "prefer-promise-reject-errors": "off",
    "camelcase": "off",
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/explicit-member-accessibility": "off",
    "@typescript-eslint/camelcase": "off",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/no-non-null-assertion": "off",
    "@typescript-eslint/ban-ts-comment": "off",
    "@typescript-eslint/no-non-null-asserted-optional-chain": "off",
    "@typescript-eslint/ban-types": [
      "warn"
    ],
    "@typescript-eslint/no-use-before-define": [
      "error",
      {
        "functions": false,
        "classes": true,
        "variables": true
      }
    ],
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        "argsIgnorePattern": "^_"
      }
    ]
  },
  "globals": {
    "moment": true
  }
}