interface UseAutoGrowHeightOptions {
    maxLines?: number;
}
interface UseAutoGrowHeightResult {
    /** The content's height, 0 until the first observation. */
    containerHeight: number;
    /**
     * The line box the element ACTUALLY renders, read off it rather than picked
     * from a width bucket — so a field the caller re-typed reports its own rhythm,
     * and the hook has no opinion about widths (`constitution.md` §10). Compare
     * against `containerHeight` to tell whether the content has wrapped past one
     * line. 0 where the element states no line box, which is also "not yet
     * measured": `maxLines` then imposes no ceiling, because there is no number.
     */
    lineHeight: number;
    scrollEnabled: boolean;
    inputRef: (node: HTMLTextAreaElement | null) => void;
    measure: () => void;
}
export declare function useAutoGrowHeight(options?: UseAutoGrowHeightOptions): UseAutoGrowHeightResult;
export {};