.eslintrc.json

{
    "env": {
        "browser": true,
        "es2021": true
    },
    "extends": [
        "airbnb-base"
    ],
    "parserOptions": {
        "ecmaVersion": "latest",
        "sourceType": "script"
    },
    "rules": {
        "brace-style": ["error", "stroustrup", { "allowSingleLine": true }],
        "camelcase": ["error", {"allow": ["^GM_", "^day_names$", "_useDefault$"]}],
        "comma-dangle": ["error", "never"],
        "consistent-return": ["error", { "treatUndefinedAsUnspecified": true }], // Good
        "curly": ["error", "multi-or-nest", "consistent"], // GOod
        "func-names": ["error", "never"],
        "global-require": "off",
        "indent": ["error", 4, { "SwitchCase": 1 }],
        "import/no-unresolved": "off",
        "lines-around-directive": ["error", { "before": "never", "after": "always" }],
        "max-len": ["error", 216, { "ignoreUrls": true, "ignorePattern": "data:image\/png;base64,", "ignoreTrailingComments": true, "ignoreTemplateLiterals": true }],
        "newline-per-chained-call": ["error", { "ignoreChainWithDepth": 5 }],
        "no-console": "off", // Good
        "no-param-reassign": "off", // Good
        "no-plusplus": "off",
        "no-promise-executor-return": "off",
        "no-prototype-builtins": "off", // Good
        "no-restricted-globals": "off",
        "no-underscore-dangle": "off",
        "no-use-before-define": ["error", "nofunc"],
        "nonblock-statement-body-position": ["error", "below"],
        "one-var": "off",
        "radix": ["error", "as-needed"],
        "strict": ["error", "function"],
        "wrap-iife": ["error", "any"]
    }
}