import type { StreamingOption } from '../interface';
declare const DEFAULT_TAIL_CONTENT = "\u258B";
/**
 * Resolve tail content from streaming option
 * @param tail - boolean | { content?: string } | undefined
 * @returns string | null - tail content or null if disabled
 */
declare const resolveTailContent: (tail?: StreamingOption['tail']) => string | null;
export { DEFAULT_TAIL_CONTENT, resolveTailContent };