.eslintrc.json

{
    "root": true,
    "env": {
        "browser": true,
        "es2021": true
    },
    "extends": [
        "eslint:recommended",
        "plugin:@typescript-eslint/recommended",
        "plugin:jest/recommended",
        "prettier"
    ],
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "ecmaVersion": "latest",
        "sourceType": "module"
    },
    "plugins": ["@typescript-eslint", "jest"],
    "rules": {
        "indent": "off",
        "linebreak-style": ["error", "unix"],
        "quotes": [1, "single"],
        "semi": ["error", "always"],
        "eqeqeq": "error",
        "no-unused-vars": "off",
        "@typescript-eslint/no-unused-vars": [
            "warn", // or error
            {
                "argsIgnorePattern": "^_",
                "varsIgnorePattern": "^_",
                "caughtErrorsIgnorePattern": "^_"
            }
        ],
        "jest/no-identical-title": "error",
        "jest/valid-expect": "error"
    }
}