import { type ChatSummary, type MutationHint } from "./types.js";
import { type DrizzleExecutor } from "../drizzle.js";
/**
 * Updates the chats posting, joining, and visibility policy fields that the authorized channel manager explicitly supplied.
 * Advancing the channel version with the policy write ensures permission checks and subscribed clients converge on the same rules.
 */
export declare function channelPolicyUpdate(executor: DrizzleExecutor, input: {
    actorUserId: string;
    chatId: string;
    retentionMode?: "inherit" | "forever" | "duration";
    retentionSeconds?: number | null;
    defaultExpiryMode?: "none" | "after_send" | "after_read";
    defaultSelfDestructSeconds?: number | null;
    defaultAfterReadScope?: "any_reader" | "all_readers";
}): Promise<{
    chat: ChatSummary;
    hint: MutationHint;
}>;
//# sourceMappingURL=channelPolicyUpdate.d.ts.map