export interface UseDeferredErrorResult {
    /** The message to render (undefined while the reveal is deferred or the field is valid). */
    error: string | undefined;
    /** Attach to the field's onBlur — reveals validation immediately and keeps it live from then on. */
    onBlur: () => void;
}
/**
 * Defers showing a field validation message while the user is still typing.
 *
 * The message is revealed when the field loses focus (touched) or when the
 * value hasn't changed for `delay` ms; every keystroke restarts the timer.
 * Once touched, validation stays live. A message that clears (the value became
 * valid) disappears immediately.
 */
export declare function useDeferredError(error: string | undefined, value: string, delay?: number): UseDeferredErrorResult;
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