`immutable-object-methods` is a tiny utility library that lets you work with plain JavaScript objects in an immutable way, offering functions such as `setIn`, `mergeDeep`, `assign`, `set`, and `without` to produce new updated objects without mutating the originals. It’s aimed at JavaScript/TypeScript developers who need simple, lightweight immutable‑update helpers as an alternative to larger libraries like immutable.js or seamless‑immutable.