.eslintrc

{
  "parser": "@babel/eslint-parser",
  "extends": "eslint:recommended",
  "parserOptions": {
    "requireConfigFile": false,
    "sourceType": "module"
  },
  "rules": {
    "no-alert": 2,
    "no-array-constructor": 2,
    "no-caller": 2,
    "no-catch-shadow": 2,
    "no-console": 2,
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-implied-eval": 2,
    "no-iterator": 2,
    "no-label-var": 2,
    "no-labels": 2,
    "no-lone-blocks": 2,
    "no-loop-func": 2,
    "no-multi-str": 2,
    "no-native-reassign": 2,
    "no-new": 2,
    "no-new-func": 2,
    "no-new-object": 2,
    "no-new-wrappers": 2,
    "no-octal-escape": 2,
    "no-proto": 2,
    "no-return-assign": 0,
    "no-script-url": 2,
    "no-sequences": 2,
    "no-shadow": 2,
    "no-shadow-restricted-names": 2,
    "no-spaced-func": 2,
    "no-undef-init": 2,
    "no-unused-expressions": 2,
    "no-with": 2,
    "camelcase": 2,
    "comma-spacing": 2,
    "consistent-return": 2,
    "eqeqeq": 2,
    "semi": 2,
    "semi-spacing": [2, {"before": false, "after": true}],
    "space-infix-ops": 2,
    "space-unary-ops": [2, { "words": true, "nonwords": false }],
    "yoda": [2, "never"],
    "brace-style": [2, "stroustrup", { "allowSingleLine": false }],
    "eol-last": 2,
    "indent": [2, 4, { "SwitchCase": 1 }],
    "key-spacing": [2, { "align": "value" }],
    "max-nested-callbacks": [2, 3],
    "new-parens": 2,
    "padding-line-between-statements": [
      2,
      { "blankLine": "always", "prev": ["const", "let", "var"], "next": "*"},
      { "blankLine": "any",    "prev": ["const", "let", "var"], "next": ["const", "let", "var"]}
    ],
    "no-useless-escape": 0,
    "no-lonely-if": 2,
    "no-multiple-empty-lines":  [2, { "max": 2 }],
    "no-nested-ternary": 2,
    "no-underscore-dangle": 0,
    "no-unneeded-ternary": 2,
    "object-curly-spacing": [2, "always"],
    "operator-assignment": [2, "always"],
    "quotes": [2, "single", "avoid-escape"],
    "keyword-spacing" : 2,
    "space-before-blocks": [2, "always"],
    "prefer-const": 2,
    "no-path-concat": 2,
    "no-undefined": 2,
    "strict": 0,
    "curly": [2, "multi-or-nest"],
    "dot-notation": 0,
    "no-else-return": 2,
    "one-var": [2, "never"],
    "no-multi-spaces": [2, {
      "exceptions": {
        "VariableDeclarator": true,
        "AssignmentExpression": true
      }
    }],
    "radix": 2,
    "no-extra-parens": 2,
    "new-cap": [2, { "capIsNew": false }],
    "space-before-function-paren": [2, "always"],
    "no-use-before-define" : [2, "nofunc"],
    "handle-callback-err": 0
  },
  "env": {
    "node": true
  }
}