/**
 * Registers a library-produced wrapper component with the active react-refresh runtime.
 * No-op when react-refresh is not available (production builds, SSR, non-Vite/Webpack tooling).
 *
 * Without this, `component()` returns a fresh `memo(...)` wrapper every time a user module
 * re-evaluates under HMR. React then sees a brand-new component type, unmounts the old subtree
 * and remounts a new one, which destroys all view-model state on every save.
 */
export declare function registerComponentForFastRefresh(comp: unknown, fn: {
    displayName?: string;
    name?: string;
    toString?: () => string;
} | undefined, idOverride?: string): void;