.eslintrc

{
  "parser": "babel-eslint",
  "env": {
    "browser": true,
    "node": true
  },
  "plugins": [
    "babel",
    "no-class",
  ],
  "rules": {
    "no-cond-assign": [2, "always"],
    "no-ex-assign": 2,
    "curly": 2,
    "max-len": [1, 80, 4],
    "max-depth": [2, 5],
    "complexity": [1, 8],
    "indent": "off",
    "no-trailing-spaces": [2, {"skipBlankLines": false}],
    "one-var": [2, "never"],
    "func-names": 2,
    "arrow-parens": 2,
    "arrow-spacing": 2,
    "prefer-spread": 1,
    "callback-return": [2, ["callback", "cb", "next", "done"]],
    "no-useless-call": 2,
    "no-const-assign": 2,
    "no-class-assign": 2,
    "require-yield": 1,
    "key-spacing": [2, {
      "beforeColon": false,
      "afterColon": true
    }],
    "max-nested-callbacks": [2, 3],
    "new-cap": [2, {"newIsCap": true, "capIsNewExceptions": ["IF", "I", "I.List", "I.Map", "I.Set", "BitSet", "I.Record","I.OrderedSet", "I.OrderedMap"]}],
    "new-parens": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multiple-empty-lines": [1, {"max": 1}],
    "no-nested-ternary": 2,
    "no-new-object": 2,
    "no-spaced-func": 2,
    "operator-assignment": [2, "always"],
    "operator-linebreak": [2, "after"],
    "padded-blocks": [2, "never"],
    "quote-props": [2, "as-needed"],
    "keyword-spacing": [2, {"before": true, "after": true}],
    "space-before-blocks": [2, "always"],
    "space-before-function-paren": [2, "never"],
    "object-curly-spacing": [2, "never"],
    "array-bracket-spacing": [2, "never"],
    "space-in-parens": [2, "never"],
    "space-infix-ops": [2, {"int32Hint": true}],
    "space-unary-ops": [2, { "words": true, "nonwords": false }],
    "no-delete-var": 2,
    "no-underscore-dangle": 0,
    "no-shadow": 2,
    "no-shadow-restricted-names": 2,
    "no-undef-init": 2,
    "no-undef": 2,
    "no-undefined": 2,
    "no-unused-vars": [1, {"vars": "all", "args": "after-used"}],
    "no-use-before-define": 2,
    "yoda": [2, "never"],
    "consistent-return": 2,
    "spaced-line-comment": 0,
    "eqeqeq": 2,
    "guard-for-in": 2,
    "no-alert": 2,
    "no-caller": 2,
    "no-labels": 2,
    "no-eval": 2,
    "no-fallthrough": 2,
    "default-case": 2,
    "no-iterator": 2,
    "no-loop-func": 2,
    "no-multi-spaces": 2,
    "no-multi-str": 2,
    "no-new": 2,
    "no-param-reassign": 2,
    "no-proto": 2,
    "no-redeclare": 2,
    "no-return-assign": 2,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-throw-literal": 2,
    "no-unused-expressions": 2,
    "no-with": 2,
    "vars-on-top": 0,
    "wrap-iife": [2, "outside"],
    "valid-typeof": 2,
    "max-statements": [1, 30],
    "max-params": [1, 4],
    "no-var": 2,
    "semi": 2,
    "dot-location": [2, "property"],

    "quotes": 0, # symbols in single quotes
    "global-strict": 0, # "use strict" should be inserted automatically
    "comma-dangle": [1, "always-multiline"], # add last commas to improve diffs

    "babel/generator-star-spacing": 1,
    "babel/object-curly-spacing": 1,
    "babel/object-shorthand": 0,
    "babel/arrow-parens": 1,

    "no-class/no-class": 2,
  }
}