.eslintrc

{
    "parser": "babel-eslint",
    "env": {
        "node": true
    },
    rules: {
        // general 

        "strict": [2, "global"],
        "one-var": [2, "never"],
        "max-len": [1, 150, 4, {"ignoreComments": true, "ignoreUrls": true}],        

        // code errors
        "vars-on-top": 0,
        "consistent-return": 0,
        "no-with": 2,
        "no-undef": 2,
        "no-new-object": 2,
        "no-array-constructor": 2,
        "no-shadow-restricted-names": 1,
        "no-redeclare": 2,
        "eqeqeq": 2,
        "no-octal": 2,
        "eol-last": 2,
        "no-dupe-args": 2,
        "no-unexpected-multiline": 2,
        "valid-typeof": 2,
        "valid-jsdoc": 2,
        "no-sparse-arrays": 2,
        "block-scoped-var": 2,
        "new-parens": 2,
        "no-eval": 2,
        "no-unneeded-ternary": 2,
        "no-new-wrappers": 2,
        "no-fallthrough": 2,
        "no-lone-blocks": 2,
        "no-cond-assign": 2,

        // code warnings

        "no-nested-ternary": 1,
        "consistent-this": [1, "that"],
        "radix": 1,
        "camelcase": 1,
        "new-cap": 1,
        "dot-location": [1, "property"],

        "no-unused-vars": 1                 // could be reasons such as "catch" and placeholders
    },
    "ecmaFeatures": {
        "modules": true
    }
}