.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "extends": "eslint:recommended",
  "parser": "babel-eslint",
  "parserOptions": {
    "sourceType": "module"
  },
  "rules": {
    "array-bracket-spacing": "error",
    "array-callback-return": "error",
    "arrow-parens": ["error", "as-needed"],
    "arrow-spacing": "error",
    "block-scoped-var": "error",
    "block-spacing": "error",
    "brace-style": ["error", "1tbs", {
      "allowSingleLine": true
    }],
    "camelcase": "error",
    "comma-dangle": ["error", {
        "arrays": "always-multiline",
        "objects": "always-multiline",
        "imports": "always-multiline",
        "exports": "always-multiline",
        "functions": "always-multiline"
    }],
    "comma-spacing": ["error", {
        "before": false,
        "after": true
    }],
    "comma-style": "error",
    "computed-property-spacing": "error",
    "consistent-return": 2,
    "curly": ["error", "multi-or-nest", "consistent"],
    "dot-location": ["error", "property"],
    "dot-notation": "error",
    "eol-last": "error",
    "eqeqeq": "error",
    "func-call-spacing": "error",
    "indent": ["error", 2],
    "key-spacing": "error",
    "keyword-spacing": "error",
    "linebreak-style": "error",
    "no-alert": "error",
    "no-caller": "error",
    "no-duplicate-imports": "error",
    "no-else-return": "error",
    "no-empty-function": "error",
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-extra-label": 2,
    "no-implicit-coercion": "error",
    "no-implicit-globals": "error",
    "no-implied-eval": "error",
    "no-invalid-this": "error",
    "no-iterator": "error",
    "no-labels": "error",
    "no-lone-blocks": "error",
    "no-lonely-if": "error",
    "no-loop-func": "error",
    "no-multiple-empty-lines": ["error", {
      "max": 1,
      "maxBOF": 0
    }],
    "no-multi-spaces": "error",
    "no-new": "error",
    "no-new-func": "error",
    "no-new-wrappers": "error",
    "no-param-reassign": "error",
    "no-proto": "error",
    "no-return-assign": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-tabs": "error",
    "no-throw-literal": "error",
    "no-trailing-spaces": "error",
    "no-unneeded-ternary": "error",
    "no-unused-expressions": "error",
    "no-unused-vars": ["error", { "ignoreRestSiblings": true }],
    "no-useless-call": "error",
    "no-useless-computed-key": "error",
    "no-useless-concat": "error",
    "no-useless-constructor": "error",
    "no-useless-escape": "error",
    "no-useless-rename": "error",
    "no-useless-return": "error",
    "no-var": "error",
    "no-void": "error",
    "no-whitespace-before-property": "error",
    "object-curly-newline": "error",
    "object-curly-spacing": ["error", "always"],
    "object-property-newline": "error",
    "object-shorthand": "error",
    "operator-assignment": "error",
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-destructuring": "error",
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "quote-props": ["error", "consistent-as-needed"],
    "quotes": ["error", "single"],
    "require-await": "error",
    "rest-spread-spacing": "error",
    "semi": ["error", "never"],
    "sort-imports": "error",
    "space-before-blocks": "error",
    "space-before-function-paren": ["error", {
        "anonymous": "never",
        "named": "never",
        "asyncArrow": "always"
    }],
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "spaced-comment": "error",
    "template-curly-spacing": "error",
    "valid-jsdoc": "error",
    "wrap-iife": "error"
  }
}