eslint configuration

.eslintrc

{
    "extends": "google",
    "plugins": [],
    "parserOptions": {
        "ecmaVersion": 6,
        "sourceType": "module"
    },
    "settings": {
        "import/core-modules": [
            "aws-sdk"
        ]
    },
    "rules": {
        "brace-style": "error",
        "callback-return": 1,
        "camelcase": "off",
        "comma-dangle": ["error", "never"],
        "comma-spacing": ["error", {"before": false, "after": true}],
        "complexity": ["error", 25],
        "curly": "error",
        "func-names": "off",
        "func-call-spacing": ["error", "never"],
        "handle-callback-err": "error",
        "key-spacing": ["error", {"beforeColon": false, "afterColon": true}],
        "keyword-spacing": [2, {"before": true, "after": true}],
        "max-len": [
            "error",
            120,
            4,
            {
                "ignorePattern": "/.+/",
                "ignoreUrls": true
            }
        ],
        "new-cap": "off",
        "no-alert": 1,
        "no-const-assign": "error",
        "no-debugger": "error",
        "no-duplicate-case": "error",
        "no-fallthrough": "error",
        "no-floating-decimal": "error",
        "no-label-var": "error",
        "no-multi-assign": "off",
        "no-multi-spaces": "error",
        "no-multiple-empty-lines": ["error", {"max": 1}],
        "no-octal": "error",
        "no-process-exit": 1,
        "no-redeclare": 1,
        "no-restricted-modules": 1,
        "no-self-assign": 1,
        "no-this-before-super": "error",
        "no-unused-labels": 1,
        "no-useless-escape": 1,
        "no-unused-vars": 1,
        "padded-blocks": [1, {"blocks": "never"}],
        "prefer-rest-params": "off",
        "quotes": ["error", "single", {"allowTemplateLiterals": true}],
        "space-before-function-paren": ["error", {"anonymous": "always", "named": "never"}],
        "space-infix-ops": "error",
        "space-in-parens": ["error", "never"],
        "space-unary-ops": "error",
        // doesn't work in node v4 :(
        "strict": "off",
        "switch-colon-spacing": 1,
        "template-curly-spacing": "error",
        "use-isnan": "error",
        "valid-typeof": "error",
        "yield-star-spacing": ["error", "both"]
    }
}