/**
 * Sanitizes an HTML string by removing any tags that do not match the provided whitelist regular expressions.
 * If the input is not a string or the whitelist is not an array, the input string is returned as is.
 *
 * @param htmlString - The HTML string to sanitize.
 * @param whitelistRegExes - An array of regular expressions representing the whitelist of allowed tags.
 * @returns The sanitized HTML string.
 */
export declare function sanitizeHtml(htmlString: string, whitelistRegExes: RegExp[]): string;
/**
 * Debounces a function, ensuring it is only executed after a specified wait time has passed since the last invocation.
 * @param func The function to debounce.
 * @param wait The wait time in milliseconds.
 * @returns A debounced version of the function.
 */
export declare function debounce<T extends (...args: any[]) => any>(func: T, wait: number): (this: any, ...args: Parameters<T>) => void;
/**
 * Checks if an element is scrollable.
 * @param ele - The HTML element to check.
 * @returns True if the element is scrollable, false otherwise.
 */
export declare function isScrollable(ele: HTMLElement): boolean;
/**
 * Returns the closest scrollable ancestor of the given element.
 * If no scrollable ancestor is found, the document element is returned as the default fallback.
 * @param ele - The element for which to find the closest scrollable ancestor.
 * @returns The closest scrollable ancestor element or the document element if none is found.
 */
export declare function getClosestScrollableAncestor(ele: HTMLElement | null): HTMLElement;
/**
 * Checks if an element is visible within its scrollable ancestor.
 *
 * @param element - The element to check visibility for.
 * @returns A boolean indicating whether the element is visible.
 */
export declare function isElementVisibleWithScrollableAncestor(element: HTMLElement): boolean;
/**
* Detects if the device is mobile.
* @returns {boolean} True if the device is mobile, otherwise false.
*/
export declare function isMobileDevice(): boolean;
export declare const decodeHTML: (input: string) => string;
/**
   * Process subtitle content to escape dangerous HTML while preserving mention formatting
   * @param subtitle The subtitle string that may contain HTML and mentions
   * @returns Processed string with dangerous HTML escaped but mentions preserved
   */
export declare function processSubtitleContent(subtitle: string): string;
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