import type { BoundedMap } from './bounded.js';

export interface RelayRecord {
  names: Set<string>;
  replyTos: Set<string>;
}

/**
 * 有界（见 bounded.js）：清理路径都要求「这个会话之后还有事发生」，
 * 而只发过一次信就没动静的会话会让条目永久留下。
 */
export declare const explicitSends: BoundedMap<string, RelayRecord>;

export function addrName(addr: string): string;
export function noteExplicitSend(sessionID: string | undefined, to: string, replyTo: string): void;
export function shouldSkipAutoRelay(
  sent: RelayRecord | undefined,
  replyTo: string,
  mailID?: string
): boolean;