import type { Action } from 'svelte/action';
/**
 * Action to make a textarea autosize.
 *
 * A parameter can be passed to the action to trigger an update when it changes.
 * @param {HTMLTextAreaElement} textarea - The textarea element to make autosize.
 */
export declare const autosize: Action<HTMLTextAreaElement, unknown | undefined>;
export declare const checkbox: Action<HTMLElement, boolean | undefined>;