/**
 * Wraps a callback so repeated invocations within `delayMs` collapse
 * to the latest args, firing exactly once `delayMs` after the final
 * call. When `delayMs` is `0` / `undefined`, the callback runs
 * synchronously with no timer involved — consumers opt in via a
 * single prop.
 *
 * Uses refs so the returned invoker has stable identity for the
 * component's lifetime while still reaching the freshest callback
 * and delay values on every invocation.
 */
export declare function useDebouncedCallback<A extends any[]>(fn: (...args: A) => void, delayMs: number | undefined): (...args: A) => void;
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