/**
 * Default debounce delay in milliseconds.
 * Used for autocomplete/typeahead fetch operations to avoid
 * excessive backend calls during rapid user input.
 */
export declare const DEFAULT_DEBOUNCE_MS = 300;
/**
 * Returns a debounced version of the given callback.
 *
 * The returned function delays invoking `callback` until after `delay` ms
 * have elapsed since the last invocation. Useful for search/autocomplete
 * inputs that trigger backend fetches.
 *
 * - Automatically cleans up pending timers on unmount.
 * - Provides a `cancel()` method on the returned function to manually
 *   discard any pending invocation.
 * - The callback reference is always kept up-to-date (no stale closures).
 *
 * @param callback - The function to debounce
 * @param delay - Debounce delay in ms (default: {@link DEFAULT_DEBOUNCE_MS})
 * @returns A debounced function with an additional `cancel` method
 *
 * @example
 * ```tsx
 * const fetchSuggestions = useDebouncedCallback(async (text: string) => {
 *   const results = await api.search(text);
 *   setOptions(results);
 * });
 *
 * <input onChange={(e) => fetchSuggestions(e.target.value)} />
 * ```
 */
export declare function useDebouncedCallback<Args extends unknown[]>(callback: (...args: Args) => void, delay?: number): ((...args: Args) => void) & {
    cancel: () => void;
};
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