.eslintrc.json

{
    "root": true,
    "env": {
        "es2020": true,
        "jest": true,
        "node": true
    },
    "parserOptions": {
        "ecmaVersion": 2020
    },
    "extends": ["eslint:recommended", "prettier"],
    "plugins": ["prettier"],
    "rules": {
        "no-unused-vars": ["error", { "args": "after-used" }],
        "semi": 2,
        "eqeqeq": [2, "allow-null"],
        "no-console": 0,
        "no-irregular-whitespace": 2,
        "no-useless-escape": 0,
        "indent": ["error", 4],
        "space-before-function-paren": [
            "error",
            {
                "anonymous": "always",
                "named": "never",
                "asyncArrow": "always"
            }
        ],
        "brace-style": [2, "1tbs", { "allowSingleLine": true }],
        "arrow-body-style": [2, "as-needed"],
        "array-bracket-spacing": [2, "never"],
        "object-curly-spacing": [2, "always"],
        "prettier/prettier": ["error"],
        "key-spacing": ["error", { "beforeColon": false }]
    },
    "env": {
        "node": true,
        "browser": true
    }
}