/**
 * Returns how many of `count` chips fit on one row of `ref`, leaving room for a
 * "+N" counter. Renders all chips first (to measure them), then caps; re-runs on
 * selection change and container resize. Falls back to `count` when it can't
 * measure (e.g. SSR / not yet laid out).
 */
export declare const useChipOverflow: (ref: {
    current: HTMLElement | null;
}, count: number) => number;