/**
 * Tiny autosize helper for textareas.  Usage:
 *
 *   const taRef = ref<HTMLTextAreaElement | null>(null)
 *   useAutosize(taRef, { minRows: 4, maxRows: 12 })
 *
 * The composable listens to the textarea's `input` event, sets
 * its height to its scrollHeight (clamped to the row range), and
 * also re-runs when the bound value changes from outside so a
 * parent that resets `.value` (e.g. on node switch) still sizes
 * correctly.
 */
import { type Ref } from 'vue';
export interface AutosizeOptions {
    /** Minimum visible rows when the textarea is empty.  Default 3. */
    minRows?: number;
    /** Maximum visible rows before the textarea starts scrolling.
     *  Default 12.  Set to 0 for "no cap". */
    maxRows?: number;
}
export declare function useAutosize(refEl: Ref<HTMLTextAreaElement | null>, options?: AutosizeOptions): void;