.eslintrc.json

{
    "parser": "babel-eslint",
    "env": {
        "browser": true
    },
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaFeatures": {
            "experimentalObjectRestSpread": true,
            "jsx": true,
            "modules": true
        }
    },
    "plugins": [
        "react"
    ],
    "rules": {
        "indent": [
            "error",
            4,
            {"SwitchCase": 1}
        ],
        "linebreak-style": 0,
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ],
        "eqeqeq": [
            "error",
            "always"
        ],
        "space-before-function-paren": [
            "error",
            "never"
        ],
        "space-before-blocks": [
            "error", 
            "always"
        ],
        "no-unused-vars": 0,
        "no-case-declarations": 0,
        "no-console": 0,
        "space-before-function-paren": ["error", "never"],
        "keyword-spacing": [
            "error", 
            {
                "after": true,
                "overrides": { 
                    "if": { "after": false },
                    "else": { "before": false },
                    "switch": { "after": false },
                    "for": { "after": false }
                }
            }
        ]
    }
}