.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "parserOptions": {
    "ecmaVersion": 9,
    "sourceType": "module"
  },
  "plugins": ["vue"],
  "extends": [
    "eslint:recommended",
    "plugin:vue/recommended"
  ],
  "rules": {
    "accessor-pairs": "error",
    "array-bracket-newline": ["warn", "consistent"],
    "array-bracket-spacing": ["warn", "never"],
    "array-callback-return": "error",
    "array-element-newline": ["warn", "consistent"],
    "arrow-body-style": "error",
    "arrow-parens": "warn",
    "arrow-spacing": "warn",
    "block-spacing": "warn",
    "brace-style": ["warn", "stroustrup"],
    "camelcase": "warn",
    "class-methods-use-this": "error",
    "comma-dangle": "warn",
    "comma-spacing": "warn",
    "comma-style": "warn",
    "complexity": ["error", 5],
    "computed-property-spacing": "warn",
    "consistent-return": "error",
    "curly": ["warn", "multi-or-nest", "consistent"],
    "default-case": "error",
    "dot-location": ["warn", "property"],
    "dot-notation": ["warn"],
    "eol-last": ["warn", "never"],
    "eqeqeq": ["error", "smart"],
    "func-call-spacing": "warn",
    "function-paren-newline": ["warn", "never"],
    "generator-star-spacing": ["warn", "after"],
    "global-require": "error",
    "implicit-arrow-linebreak": "warn",
    "indent": ["warn", 2],
    "key-spacing": "warn",
    "keyword-spacing": "warn",
    "line-comment-position": "warn",
    "lines-between-class-members": "warn",
    "max-classes-per-file": ["error", 1],
    "max-depth": "error",
    "max-len": "warn",
    "max-params": "error",
    "max-statements-per-line": "warn",
    "multiline-ternary": ["warn", "always-multiline"],
    "new-cap": "error",
    "new-parens": "warn",
    "newline-per-chained-call": ["warn", {
      "ignoreChainWithDepth": 1
    }],
    "no-alert": "error",
    "no-array-constructor": "error",
    "no-bitwise": "error",
    "no-buffer-constructor": "error",
    "no-console": "off",
    "no-else-return": "warn",
    "no-empty-function": "error",
    "no-eval": "error",
    "no-extra-bind": "error",
    "no-extra-parens": "warn",
    "no-floating-decimal": "warn",
    "no-implicit-coercion": "error",
    "no-implicit-globals": "error",
    "no-invalid-this": "error",
    "no-labels": "error",
    "no-lone-blocks": "error",
    "no-lonely-if": "error",
    "no-loop-func": "error",
    "no-magic-numbers": "error",
    "no-mixed-requires": ["warn", {
      "grouping": true,
      "allowCall": false
    }],
    "no-multi-assign": "error",
    "no-multi-spaces": "warn",
    "no-multi-str": "error",
    "no-multiple-empty-lines": ["warn", {
      "max": 2,
      "maxBOF": 0,
      "maxEOF": 0
    }],
    "no-negated-condition": "error",
    "no-nested-ternary": "error",
    "no-new": "error",
    "no-new-func": "error",
    "no-new-object": "error",
    "no-new-require": "error",
    "no-new-wrappers": "error",
    "no-param-reassign": "error",
    "no-path-concat": "error",
    "no-process-env": "warn",
    "no-process-exit": "error",
    "no-return-assign": "error",
    "no-return-await": "error",
    "no-script-url": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-shadow-restricted-names": "error",
    "no-sync": ["error", {
      "allowAtRootLevel": true
    }],
    "no-template-curly-in-string": "error",
    "no-throw-literal": "error",
    "no-trailing-spaces": "warn",
    "no-undef-init": "warn",
    "no-underscore-dangle": "error",
    "no-unmodified-loop-condition": "error",
    "no-unneeded-ternary": "error",
    "no-unused-expressions": "error",
    "no-use-before-define": "error",
    "no-useless-call": "error",
    "no-useless-catch": "error",
    "no-useless-computed-key": "error",
    "no-useless-concat": "warn",
    "no-useless-constructor": "warn",
    "no-useless-rename": "error",
    "no-useless-return": "warn",
    "no-void": "error",
    "no-whitespace-before-property": "warn",
    "no-with": "error",
    "object-curly-newline": "warn",
    "object-curly-spacing": "warn",
    "object-shorthand": "error",
    "one-var": ["error", "never"],
    "operator-assignment": "error",
    "operator-linebreak": ["warn", "before"],
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-destructuring": "warn",
    "prefer-named-capture-group": "warn",
    "prefer-numeric-literals": "error",
    "prefer-object-spread": "error",
    "prefer-promise-reject-errors": "error",
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "quote-props": ["warn", "as-needed"],
    "require-await": "error",
    "rest-spread-spacing": "warn",
    "semi": "error",
    "semi-spacing": "warn",
    "semi-style": "warn",
    "space-before-blocks": "warn",
    "space-before-function-paren": ["warn", {
      "anonymous": "always",
      "named": "never",
      "asyncArrow": "always"
    }],
    "space-in-parens": "warn",
    "space-infix-ops": "warn",
    "space-unary-ops": "warn",
    "spaced-comment": "warn",
    "switch-colon-spacing": "warn",
    "symbol-description": "error",
    "template-curly-spacing": "warn",
    "template-tag-spacing": "warn",
    "vars-on-top": "warn",
    "wrap-iife": ["warn", "inside"],
    "yield-star-spacing": ["warn", "after"],
    "yoda": "warn"
  }
}