import { type DrizzleTransaction } from "../drizzle.js";
/**
 * Adds a user to eligible auto-join chats through chatMembers and emits the corresponding channel updates and service messages.
 * Requiring the profile or migration transaction keeps membership epochs, messages, and their shared sync sequence in one durable commit.
 */
export declare function userJoinAutoChannels(executor: DrizzleTransaction, user: {
    id: string;
    username: string;
}, sequence?: number, onlyChatId?: string): Promise<string>;
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