react-polymorphic-types is a TypeScript‑only utility library that lets React developers create “polymorphic” components—components whose rendered element can be changed via an `as` prop—while providing zero runtime overhead. It supplies precise typings (including autocomplete, prop validation and HTML tag checks) for both regular, forward‑ref, memoized and lazy components, targeting TypeScript‑savvy front‑end developers who want type‑safe, flexible UI primitives.