.eslintrc.json

{
    "env": {
        "browser": true,
        "node": true,
        "commonjs": true
    },
    "extends": [
        "eslint:recommended"
    ],
    "plugins": [
        "@jupyterlab/eslint-plugin-jinja"
    ],
    "parserOptions": {
        "ecmaVersion": 6,
        "sourceType": "module",
        "ecmaFeatures": {
            "modules": true
        }
    },
    "rules": {
        "indent": [
            "error",
            2
        ],
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ],
        "no-console": [
            "error",
            { "allow": ["warn", "error"] }
        ]
    }
}