/**
 * @typedef {Object} OnInputInfo
 * @property {number} breakLines - Total number of `\n` line breaks in the textarea value.
 * @property {number} height - Final calculated height (in pixels) applied to the textarea.
 * @property {number} scrollHeight - Internal scrollHeight before limiting.
 * @property {number} maxHeight - Maximum allowed height before scrolling is forced.
 * @property {number} lineHeight - Height of one line of text, computed from CSS.
 * @property {number} maxRows - Maximum number of visible rows allowed.
 * @property {number} rows - Effective number of visual rows being used.
 */
export type OnInputInfo = {
    /**
     * - Total number of `\n` line breaks in the textarea value.
     */
    breakLines: number;
    /**
     * - Final calculated height (in pixels) applied to the textarea.
     */
    height: number;
    /**
     * - Internal scrollHeight before limiting.
     */
    scrollHeight: number;
    /**
     * - Maximum allowed height before scrolling is forced.
     */
    maxHeight: number;
    /**
     * - Height of one line of text, computed from CSS.
     */
    lineHeight: number;
    /**
     * - Maximum number of visible rows allowed.
     */
    maxRows: number;
    /**
     * - Effective number of visual rows being used.
     */
    rows: number;
};
/**
 * A lightweight utility class that automatically adjusts the height of a `<textarea>`
 * element based on its content. It prevents scrollbars by expanding vertically as needed,
 * up to a configurable maximum number of visible rows.
 *
 * Features:
 * - Automatically resizes the textarea as the user types
 * - Prevents vertical scrollbars until a maximum row limit is reached
 * - Supports additional height padding
 * - Provides real-time callbacks for input and resize events
 * - Allows manual refresh and cleanup of behavior
 *
 * Ideal for chat inputs, note editors, or any form where dynamic space usage
 * is preferred without relying on scrollbars too early.
 *
 * @class
 * @beta
 */
declare class TinyTextarea {
    #private;
    _handleInput: () => void;
    /**
     * Gets the current destruction status of the instance.
     *
     * @returns {boolean} True if the instance is destroyed, false otherwise.
     */
    get destroyed(): boolean;
    /**
     * Returns the computed line height in pixels.
     * @returns {number}
     */
    get lineHeight(): number;
    /**
     * Returns the maximum number of rows allowed.
     * @returns {number}
     */
    get maxRows(): number;
    /**
     * Returns the additional height added to the textarea.
     * @returns {number}
     */
    get extraHeight(): number;
    /**
     * Returns the most recently applied height.
     * @returns {number}
     */
    get currentHeight(): number;
    /**
     * Returns the most recently calculated row count.
     * @returns {number}
     */
    get currentRows(): number;
    /**
     * Returns the original textarea element managed by this instance.
     * @returns {HTMLTextAreaElement}
     */
    get textarea(): HTMLTextAreaElement;
    /**
     * Creates a new TinyTextarea instance.
     *
     * @param {HTMLTextAreaElement} textarea - The `<textarea>` element to enhance.
     * @param {Object} [options={}] - Optional configuration parameters.
     * @param {number} [options.maxRows] - Maximum number of visible rows before scrolling.
     * @param {number} [options.extraHeight] - Additional pixels to add to final height.
     * @param {(info: OnInputInfo) => void} [options.onResize] - Callback when the number of rows changes.
     * @param {(info: OnInputInfo) => void} [options.onInput] - Callback on every input event.
     * @throws {Error} If `textarea` is not a valid `<textarea>` element.
     * @throws {TypeError} If provided options are of invalid types.
     */
    constructor(textarea: HTMLTextAreaElement, options?: {
        maxRows?: number;
        extraHeight?: number;
        onResize?: (info: OnInputInfo) => void;
        onInput?: (info: OnInputInfo) => void;
    });
    /**
     * Returns the latest height and row count of the textarea.
     * @returns {{ height: number, rows: number }} - Last known resize state.
     */
    getData(): {
        height: number;
        rows: number;
    };
    /**
     * Manually trigger a resize check.
     */
    refresh(): void;
    /**
     * Cleans up internal listeners and disables dynamic behavior.
     */
    destroy(): void;
}
export default TinyTextarea;
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