`fast-path-set` is a tiny npm package that provides a drop‑in replacement for `lodash.set`, letting developers assign values deep inside objects using dot‑separated paths (e.g., `set(obj, 'a.b.c', 1)`). It is aimed at JavaScript developers who need higher performance and safer behavior—preventing prototype‑pollution and refusing to overwrite non‑object values—while retaining the familiar lodash API.