.eslintrc

{
  "parser": "@typescript-eslint/parser",
  "plugins": [
    "ordered-imports"
  ],
  "parserOptions": {
    "ecmaVersion": 9,
    "sourceType": "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true
    },
  },
  "env": {
    "es6": true,
    "browser": true,
    "node": true,
    "jest": true,
  },
  "globals": {
    "NodeListOf": true
  },
  "rules": {
    "quotes": ["error", "double"],
    "indent": ["error", 2, { "SwitchCase": 1 }],
    "no-types-missing-file-annotation": 0,
    "comma-dangle": ["error", "always-multiline"],
    "semi-spacing": "error",
    "key-spacing": ["error", {
      "beforeColon": false,
    }],
    "semi": "error",
    "prefer-const": "error",
    "object-property-newline": "off",
    "getter-return": "error",
    "no-cond-assign": "error",
    "no-console": "error",
    "no-constant-condition": "error",
    "no-debugger": "error",
    "no-dupe-args": "error",
    "no-dupe-keys": "error",
    "no-duplicate-case": "error",
    "no-empty": "error",
    "no-empty-character-class": "error",
    "no-ex-assign": "error",
    "no-extra-boolean-cast": "error",
    "no-extra-parens": ["error", "all"],
    "no-extra-semi": "error",
    "no-func-assign": "error",
    "no-inner-declarations": "error",
    "valid-typeof": "error",
    "no-irregular-whitespace": ["error", {
      "skipComments": true,
      "skipRegExps": true,
      "skipTemplates": true,
    }],
    "no-obj-calls": "error",
    "no-sparse-arrays": "error",
    "no-template-curly-in-string": "error",
    "no-unexpected-multiline": "error",
    "no-unreachable": "error",
    "no-unsafe-finally": "error",
    "no-unsafe-negation": "error",
    "use-isnan": "error",
    "valid-jsdoc": "error",
    "array-callback-return": "error",
    "block-scoped-var": "error",
    "curly": "error",
    "default-case": "error",
    "dot-location": ["error", "property"],
    "dot-notation": "error",
    "eqeqeq": ["error", "always"],
    "no-alert": "error",
    "no-case-declarations": "error",
    "no-else-return": "error",
    "no-empty-function": "error",
    "no-empty-pattern": "error",
    "no-eq-null": "error",
    "no-eval": "error",
    "no-extra-bind": "error",
    "no-extra-label": "error",
    "no-fallthrough": "error",
    "no-floating-decimal": "error",
    "no-global-assign": "error",
    "no-implicit-coercion": "error",
    "no-implicit-globals": "error",
    "no-implied-eval": "error",
    "no-invalid-this": "error",
    "no-iterator": "error",
    "no-lone-blocks": "error",
    "no-loop-func": "error",
    "no-magic-numbers": ["error", {
      "ignoreArrayIndexes": true,
      "ignore": [0, 1, -1],
    }],
    "no-multi-spaces": "error",
    "no-multi-str": "error",
    "no-new-func": "error",
    "no-new-wrappers": "error",
    "no-octal": "error",
    "no-octal-escape": "error",
    "no-param-reassign": "error",
    "no-proto": "error",
    "no-redeclare": "error",
    "no-script-url": "error",
    "no-return-assign": "error",
    "no-self-assign": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-throw-literal": "error",
    "no-unused-expressions": "error",
    "no-unused-labels": "error",
    "no-useless-call": "error",
    "no-useless-concat": "error",
    "no-useless-escape": "error",
    "no-void": "error",
    "no-warning-comments": "error",
    "no-with": "error",
    "prefer-promise-reject-errors": "error",
    "radix": "error",
    "vars-on-top": "error",
    "yoda": ["error", "never", {
      "exceptRange": true,
    }],
    "no-delete-var": "error",
    "no-label-var": "error",
    "no-restricted-globals": ["error", "event"],
    "no-shadow-restricted-names": "error",
    "no-undef": "error",
    "no-undef-init": "error",
    "no-unused-vars": "error",
    "no-use-before-define": "error",
    "array-bracket-newline": ["error", "consistent"],
    "array-bracket-spacing": ["error", "never"],
    "block-spacing": "error",
    "brace-style": "error",
    "camelcase": "error",
    "comma-spacing": ["error", {
      "before": false,
      "after": true,
    }],
    "comma-style": ["error", "last"],
    "computed-property-spacing": ["error", "never"],
    "eol-last": ["error", "always"],
    "consistent-this": ["error", "that"],
    "func-call-spacing": ["error", "never"],
    "func-name-matching": ["error", "always"],
    "func-names": ["error", "always"],
    "func-style": ["error", "expression"],
    "implicit-arrow-linebreak": ["error", "beside"],
    "keyword-spacing": ["error", {
      "after": true,
    }],
    "line-comment-position": ["error", {
      "position": "above",
    }],
    "linebreak-style": ["error", "unix"],
    "lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
    "max-len": ["error", {
      "code": 120,
    }],
    "max-nested-callbacks": ["error", 3],
    "new-parens": "error",
    "newline-per-chained-call": ["error", {
      "ignoreChainWithDepth": 2,
    }],
    "no-bitwise": "error",
    "no-inline-comments": "error",
    "no-lonely-if": "error",
    "no-mixed-spaces-and-tabs": "error",
    "no-multi-assign": "error",
    "no-negated-condition": "error",
    "no-nested-ternary": "error",
    "no-new-object": "error",
    "no-trailing-spaces": "error",
    "no-plusplus": ["error", {
      "allowForLoopAfterthoughts": true,
    }],
    "no-unneeded-ternary": "error",
    "no-whitespace-before-property": "error",
    "object-curly-newline": ["error", { "ObjectExpression": { "multiline": true, "consistent": true } }],
    "object-curly-spacing": ["error", "always"],
    "one-var-declaration-per-line": ["error", "always"],
    "padded-blocks": ["error", "never"],
    "space-before-function-paren": ["error", "never"],
    "space-in-parens": ["error", "never"],
    "switch-colon-spacing": "error",
    "arrow-body-style": ["error", "as-needed"],
    "arrow-parens": ["error", "as-needed"],
    "arrow-spacing": "error",
    "constructor-super": "error",
    "no-class-assign": "error",
    "no-useless-constructor": "error",
    "ordered-imports/ordered-imports": [
      "error",
      {
        "symbols-first": true,
        "specifier-ordering": "any",
        "group-ordering": [
          {
            name: "Lit element",
            match:
              "^(lit|(?:\\w+-?)*$)",
            order: 10,
          },
          {
            name: "Local imports",
            match: "^(\\.|\\.\\.)",
            order: 20,
          }
        ]
      }
    ]
  }
}