.eslintrc

{
  "parser": "babel-eslint",
  "env": {
    "node": true
  },
  "rules": {
    // possible errors
    "comma-dangle": [ 2, "always-multiline" ],
    "no-cond-assign": [ 2, "except-parens" ],
    "no-console": 2,
    "no-constant-condition": 2,
    "no-control-regex": 2,
    "no-debugger": 2,
    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-empty-character-class": 2,
    "no-empty": 2,
    "no-ex-assign": 2,
    "no-extra-boolean-cast": 2,
    "no-extra-parens": 0,
    "no-extra-semi": 2,
    "no-func-assign": 2,
    "no-inner-declarations": 2,
    "no-invalid-regexp": 2,
    "no-irregular-whitespace": 2,
    "no-negated-in-lhs": 2,
    "no-obj-calls": 2,
    "no-regex-spaces": 2,
    "no-reserved-keys": 2,
    "no-sparse-arrays": 2,
    "no-unreachable": 2,
    "use-isnan": 2,
    "valid-typeof": 2,
    "no-unexpected-multiline": 2,

    // best practice
    "accessor-pairs": [ 2, { "getWithoutSet": false, "setWithoutGet": true } ],
    "block-scoped-var": 0,
    "consistent-return": 2,
    "curly": [ 2, "all" ],
    "default-case": 2,
    "dot-notation": 0,
    "dot-location": 2,
    "eqeqeq": 2,
    "guard-for-in": 2,
    "no-alert": 2,
    "no-caller": 2,
    "no-div-regex": 2,
    "no-else-return": 2,
    "no-empty-label": 2,
    "no-eq-null": 2,
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-fallthrough": 2,
    "no-floating-decimal": 2,
    "no-implied-eval": 2,
    "no-iterator": 2,
    "no-labels": 2,
    "no-lone-blocks": 2,
    "no-loop-func": 2,
    "no-multi-spaces": 2,
    "no-multi-str": 2,
    "no-native-reassign": 2,
    "no-new-func": 2,
    "no-new-wrappers": 2,
    "no-new": 2,
    "no-octal-escape": 2,
    "no-octal": 2,
    "no-param-reassign": 0,
    "no-process-env": 2,
    "no-proto": 2,
    "no-redeclare": 2,
    "no-return-assign": 2,
    "no-script-url": 2,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-throw-literal": 2,
    "no-unused-expressions": 2,
    "no-void": 2,
    "no-warning-comments": 0,
    "no-with": 2,
    "radix": 2,
    "vars-on-top": 2,
    "wrap-iife": [ 2, "inside" ],
    "yoda": 0,

    // strict mode
    "strict": [ 2, "never" ],

    // variables
    "no-catch-shadow": 2,
    "no-delete-var": 2,
    "no-label-var": 2,
    "no-shadow-restricted-names": 2,
    "no-shadow": 0,
    "no-undef-init": 2,
    "no-undef": 2,
    "no-undefined": 2,
    "no-unused-vars": 2,
    "no-use-before-define": [ 2, "nofunc" ],

    // style
    "array-bracket-spacing": [ 2, "always" ],
    "camelcase": [ 2, { "properties": "always" } ],
    "comma-spacing": [ 2, { "before": false, "after": true } ],
    "comma-style": [ 2, "last" ],
    "computed-property-spacing": [ 2, "never" ],
    "consistent-this": [ 2, "_this" ],
    "eol-last": 2,
    "func-names": 0,
    "func-style": 0,
    "indent": [ 2, 2 ],
    "key-spacing": 2,
    "linebreak-style": [ 2, "unix" ],
    "max-nested-callbacks": 0,
    "new-cap": 2,
    "new-parens": 2,
    "newline-after-var": [ 2, "always" ],
    "no-array-constructor": 2,
    "no-continue": 0,
    "no-inline-comments": 2,
    "no-lonely-if": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multiple-empty-lines": 2,
    "no-nested-ternary": 2,
    "no-new-object": 2,
    "no-spaced-func": 2,
    "no-ternary": 0,
    "no-trailing-spaces": 2,
    "no-underscore-dangle": 0,
    "no-unneeded-ternary": 2,
    "object-curly-spacing": [ 2, "always" ],
    "one-var": 0,
    "operator-assignment": [ 2, "always" ],
    "operator-linebreak": [ 2, "before" ],
    "padded-blocks": [ 2, "never" ],
    "quote-props": [ 2, "as-needed" ],
    "quotes": [ 2, "double", "avoid-escape" ],
    "semi-spacing": [ 2, { "before": false, "after": true } ],
    "semi": [ 2, "always" ],
    "sort-vars": 0,
    "space-after-keywords": [ 2, "always" ],
    "space-before-blocks": [ 2, "always" ],
    "space-before-function-paren": [ 2, "never" ],
    "space-in-parens": [ 2, "never" ],
    "space-infix-ops": [ 2, { "int32Hint": true } ],
    "space-return-throw-case": 2,
    "space-unary-ops": [ 2, { "words": true, "nonwords": false } ],
    "spaced-comment": [ 2, "always" ],
    "wrap-regex": 0,

    // es6
    "constructor-super": 2,
    "no-this-before-super": 2,
    "no-var": 2,
    "object-shorthand": 0,
    "prefer-const": 0,
  }
}