.eslintrc.json

{
    "env": {
        "node": true,
        "commonjs": true,
        "es2021": true
    },
    "extends": ["eslint:recommended", "prettier", "airbnb-base"],
    "plugins": ["markdownlint", "prettier"],
    "overrides": [],
    "parserOptions": {
        "ecmaVersion": "latest"
    },
    "rules": {
        // No camelCase.
        "camelcase": ["off"],
        "comma-dangle": [
            "error",
            {
                "arrays": "always-multiline",
                "functions": "never",
                "imports": "always-multiline",
                "objects": "always-multiline"
            }
        ],
        "consistent-return": ["off"],
        "eqeqeq": ["error", "always"],
        "import/extensions": [
            "error",
            {
                "js": "always"
            }
        ],
        "import/no-absolute-path": ["off"],
        "import/no-unresolved": ["off"],
        "import/prefer-default-export": ["off"],
        // Use 4 space indentation.
        "indent": [
            "error",
            4,
            {
                "SwitchCase": 1
            }
        ],
        "max-len": [
            "error",
            {
                "code": 80,
                "comments": 80,
                "ignoreUrls": true
            }
        ],
        "no-await-in-loop": ["off"],
        "no-continue": ["off"],
        "no-empty": [
            "error",
            {
                "allowEmptyCatch": true
            }
        ],
        "no-plusplus": ["off"],
        "no-restricted-syntax": ["off"],
        "no-underscore-dangle": ["off"],
        "no-use-before-define": [
            "error",
            {
                "functions": false
            }
        ],
        "prettier/prettier": "off",
        "quotes": ["error", "double"],
        "yoda": ["error", "never"]
    }
}