export interface UseIsTruncatedOptions {
    /** Measure vertical clipping (`line-clamp-N`) instead of the single-line ellipsis. */
    multiline?: boolean;
}
/**
 * Tracks whether an element's text is ACTUALLY clipped — the condition for
 * offering a "full value" tooltip. Text that fits needs no tooltip, and showing
 * one anyway just repeats what the user is already reading.
 *
 * Three things can change the answer, and all three are watched: the box
 * resizing (`ResizeObserver`), the text itself changing, and the measured
 * ELEMENT changing. None of them implies the others — new text inside a
 * width-constrained box leaves the box exactly as it was, so the observer never
 * fires; and a caller that swaps between render branches (adornment vs plain)
 * mounts a different node under the same text, which a `useRef` would leave
 * measured against the old, detached node. Pass the rendered value as `value`.
 *
 * `ref` is a CALLBACK ref, not a `RefObject` — that is what makes the element
 * itself a dependency. Attach it exactly like a normal ref; there is no
 * `.current` to read.
 *
 * ```tsx
 * const { ref, isTruncated } = useIsTruncated<HTMLHeadingElement>(title)
 * <FloatingTooltip content={title} disabled={!isTruncated}>
 *   <h1 ref={ref} className="truncate">{title}</h1>
 * </FloatingTooltip>
 * ```
 */
export declare function useIsTruncated<T extends HTMLElement>(value: unknown, options?: UseIsTruncatedOptions): {
    ref: (node: T | null) => void;
    isTruncated: boolean;
};
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