.eslintrc.json

{
    "env": {
      "es6": true,
      "node": true,
      "browser": true
    },
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaVersion": 8,
        "sourceType": "module"
    },
    "rules": {
        "linebreak-style": [
            "error",
            "unix"
        ],
        "semi": [
            "error",
            "always"
        ]
    }
}