import { Driver, Session } from "neo4j-driver";
export declare function getDriver(): Driver;
export declare function getSession(): Session;
export declare function closeDriver(): Promise<void>;
/**
 * Fetches the user's IANA timezone from their UserProfile node.
 * Throws if the profile doesn't exist or the timezone is not set —
 * callers must not silently fall back to a default.
 */
export declare function getUserTimezone(accountId: string): Promise<string>;
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