import { VisibleOptionsType, VisibleOptionsTypeCombine } from "./types";
/**
 * Creates a new HTML element
 * @param {string} type the type of HTML element to create
 * @param {string} textContent the text to put in the new HTML element
 * @returns {Object} newly created HTML element
 * @private
 */
export declare function createEl(type: string, textContent: string): HTMLElement;
/**
 * Returns the last child of an element excluding the caret element
 * @param {Object} el the parent
 * @param {boolean} [caret=false] if true, get the second to last child
 * @returns {Object} HTML element
 * @private
 */
export declare function getLastChild(el: HTMLElement, caret?: boolean): Element;
/**
 * Waits until an element becomes visible
 * @param {Object} el the parent
 * @param {string} waitTill configure when the element becomes visible
 * @returns {Promise<void>}
 * @private
 */
export declare function waitUntilVisibleFunc(el: HTMLElement, waitTill: VisibleOptionsType | VisibleOptionsTypeCombine, controller: AbortController): Promise<void>;
/**
 * Gets the CSS display value of an element
 * @param {Object} el the element to get the display from
 * @returns {string} the display value of the element
 * @private
 */
export declare function getDefaultDisplay(el: HTMLElement): string;
/**
 * Returns true if the argument is a number
 * @param {*} num value to check
 * @returns {boolean} true or false
 * @private
 */
export declare function isNumber(num: any): num is number;