**is-json** is a tiny Node.js utility that determines whether a given value is a syntactically valid JSON string (or, optionally, a plain JavaScript object) without resorting to `try / catch`. It exposes a simple `isJSON(value, passObjects?)` function and a stricter `isJSON.strict` variant for those who prefer the more robust `try / catch` approach. The package is aimed at JavaScript developers who need a lightweight, dependency‑free way to quickly validate JSON input.