import { type TokenManager } from '../google/client.ts';
/** The mailbox's history id now, where a delta starts from. Mirrors Python's `current_history_id`. */
export declare function currentHistoryId(tokenManager: TokenManager): Promise<string>;
/**
 * The mailbox's history records after `start`, and the history id they reach.
 * Gmail answers 404 for a start older than the history it keeps, which
 * rejects as any failed call does. Mirrors Python's `list_history`.
 */
export declare function listHistory(tokenManager: TokenManager, start: string): Promise<[Record<string, unknown>[], string]>;
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