.eslintrc.json

{
    "rules": {
        "indent": ["error", "tab"],
        "quotes": ["error", "single"],
        "quote-props": ["warn", "as-needed"],
        "semi": ["error", "always"],
        "keyword-spacing": ["error"],
        "no-unused-vars": ["warn", { "vars": "all", "args": "none" }],
        "no-console": ["off"],
        "no-mixed-spaces-and-tabs": ["error", "smart-tabs"],
        "no-new-object": ["error"],
        "no-array-constructor": ["error"],
        "space-before-blocks": ["error", "always"],
        "space-before-function-paren": ["error", "never"],
        "space-in-parens": ["error", "never"],
        "space-infix-ops": ["error"],
        "space-unary-ops": ["error", { "words": true, "nonwords": false }],
        "object-curly-spacing": ["error", "always"],
        "array-bracket-spacing": ["error", "never"],
        "guard-for-in": "error",
        "no-spaced-func": "error",
        "no-trailing-spaces": ["error", { "skipBlankLines": true }],
        "handle-callback-err": "error",
        "comma-spacing": ["error", {"before": false, "after": true}],
        "one-var": ["error", "never"],
        "no-redeclare": 0,
        "comma-dangle": ["error", "never"],
        "arrow-parens": ["warn", "always"],
        "arrow-spacing": ["error"],
        "no-confusing-arrow": ["error"],
        "no-useless-computed-key": ["error"],
        "object-shorthand": ["warn", "methods"],
        "prefer-arrow-callback": ["error"],
        "prefer-rest-params": ["warn"],
        "template-curly-spacing": ["warn", "never"]
    },
    "env": {
        "node": true,
        "es6": true,
        "mocha": true
    },
    "extends": "eslint:recommended"
}