.eslintrc

{
    "parser": "babel-eslint",
    "parserOptions": {
        "ecmaVersion": 8,
        "sourceType": "module"
    },
    "env": {
        "browser": true,
        "es6": true,
        "greasemonkey": true,
        "jquery": true,
        "node": true
    },
    "globals": {
        "Howl": true
    },
    "extends": "eslint:recommended",
    "rules": {
        "brace-style": [2, "1tbs"],
        "camelcase": 0,
        "comma-spacing": [2, {"before": false, "after": true}],
        "comma-style": [2, "last"],
        "curly": 2,
        "dot-notation": 0,
        "eol-last": 2,
        "guard-for-in": 2,
        "handle-callback-err": 2,
        "key-spacing": [2, {"beforeColon": false, "afterColon": true}],
        "keyword-spacing": [2, {"before": true, "after": true}],
        "new-parens": 2,
        "no-array-constructor": 2,
        "no-bitwise": 2,
        "no-constant-condition": 2,
        "no-else-return": 2,
        "no-eq-null": 2,
        "no-extra-semi": 2,
        "no-floating-decimal": 2,
        "no-inline-comments": 0,
        "no-invalid-regexp": 2,
        "no-irregular-whitespace": 2,
        "no-lonely-if": 0,
        "no-mixed-requires": 2,
        "no-mixed-spaces-and-tabs": 2,
        "no-multiple-empty-lines": 2,
        "no-negated-in-lhs": 2,
        "no-new-object": 2,
        "no-path-concat": 2,
        "no-process-env": 2,
        "no-redeclare": 0,
        "no-regex-spaces": 2,
        "no-self-compare": 2,
        "no-sequences": 2,
        "no-shadow": 0,
        "no-spaced-func": 2,
        "no-trailing-spaces": 2,
        "no-unused-expressions": 2,
        "no-unused-vars": 2,
        //"no-use-before-define": 2,
        "no-void": 2,
        "quote-props": [2, "as-needed"],
        "quotes": [2, "single"],
        "radix": 2,
        "semi": [2, "always"],
        "semi-spacing": 2,
        "space-before-blocks": [2, "always"],
        "spaced-comment": [2, "always"],
        "space-in-parens": [2, "never"],
        "space-unary-ops": [2, {"words": true, "nonwords": false}],
        "strict": 0,
        "valid-typeof": 2,
        "wrap-iife": [2, "outside"],
        "yoda": [2, "never"],
        // ECMAScript 6
        "arrow-body-style": "off",
        "arrow-parens": "error",
        "arrow-spacing": "error",
        "generator-star-spacing": "error",
        "no-confusing-arrow": "error",
        "no-duplicate-imports": "error",
        "no-restricted-imports": "error",
        "no-useless-computed-key": "error",
        "no-useless-constructor": "error",
        "no-useless-rename": "error",
        "no-var": "error",
        "object-shorthand": "error",
        "prefer-arrow-callback": "error",
        "prefer-const": "error",
        "prefer-numeric-literals": "error",
        "prefer-rest-params": "error",
        "prefer-spread": "error",
        "prefer-template": "error",
        "rest-spread-spacing": "error",
        "sort-imports": "off",
        "symbol-description": "error",
        "template-curly-spacing": "error",
        "yield-star-spacing": "error"
    }
}