.eslintrc.json

{
    "env": {
        "browser": true,
        "commonjs": true,
        "es6": true,
        "node": true,
        "mocha": true
    },
    "parser": "babel-eslint",
    "plugins": [
        "flowtype",
        "mocha"
    ],
    "extends": [
        "eslint:recommended",
        "plugin:flowtype/recommended"
    ],
    "parserOptions": {
        "ecmaFeatures": {
            "experimentalObjectRestSpread": true,
            "jsx": true
        },
        "sourceType": "module"
    },
    "rules": {
        "mocha/no-exclusive-tests": "error",
        "indent": [
            "error",
            4
        ],
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ],
        "comma-dangle": [
            "error",
            "never"
        ],
        "no-console": [
            "error",
            {"allow": [
                "log",
                "error"
            ]}
        ]
    }
}