.eslintrc.json

{
    "env": {
        "browser": false,
        "commonjs": false,
        "es6": true,
        "node": true
    },
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": false
        },
        "sourceType": "script"
    },
    "extends": ["eslint:recommended"],
    "rules": {
        "indent": ["error", 2],
        "linebreak-style": ["error", "unix"],
        "quotes": ["error", "double"],
        "semi": ["error", "always"],
        "no-extra-semi": "error",

        "curly": ["error", "all"],
        "brace-style": ["error", "1tbs"],
        "object-curly-spacing": ["error", "never"],
        "keyword-spacing": "error",

        "no-trailing-spaces": "error",
        "no-mixed-spaces-and-tabs": "error",
        "no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 1 }],
        "eol-last": ["error", "always"],

        "no-else-return": ["error", { "allowElseIf": true }],
        "no-lonely-if": "error",
        "no-useless-return": "error",

        "no-floating-decimal": "error",
        "no-octal": "error",
        "no-delete-var": "error",

        "array-bracket-newline": ["error", "consistent"],
        "array-bracket-spacing": ["error", "never"],

        "operator-linebreak": ["error", "before"],
        "no-mixed-operators": "error",

        "no-unneeded-ternary": "error",
        "no-unsafe-negation": "error",
        "no-regex-spaces": "error",
        "wrap-iife": "error",
        "new-parens": "error",
        "no-unused-labels": "error",
        "func-call-spacing": "error",
        "space-in-parens": ["error", "never"],
        "comma-spacing": ["error", {"before": false, "after": true}],
        "no-console": "off"
    }
}