.eslintrc.json

{
    "env": {
        "browser": true,
        "commonjs": true,
        "es6": true,
        "node": true
    },
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "sourceType": "module"
    },
    "rules": {
        "no-const-assign": "warn",
        "no-this-before-super": "warn",
        "no-undef": "warn",
        "no-unreachable": "warn",
        "no-unused-vars": ["error", {"vars": "all", "args": "none"}],
        "constructor-super": "warn",
        "valid-typeof": "warn"
    },
    "globals": {
        "atob": true,
        "btoa": true,
        "Components": true,
        "CSSRule": true,
        "clearInterval": true,
        "clearTimeout": true,
        "console": true,
        "CSS": true,
        "DocumentFragment": true,
        "DOMParser": true,
        "dump": true,
        "Element": true,
        "exports": true,
        "gDBView": true,
        "isWorker": true,
        "indexedDB": true,
        "loader": true,
        "module": true,
        "Node": true,
        "reportError": true,
        "require": true,
        "setInterval": true,
        "setTimeout": true,
        "uneval": true,
        "TextDecoder": true,
        "TextEncoder": true,
        "URL": true,
        "WebSocket": true,
        "XMLHttpRequest": true
    }
}