import { type DrizzleTransaction } from "../../drizzle.js";
/**
 * Validates every supplied report target, requiring existing users, visible chats and messages, matching chat/message pairs, and accessible live files.
 * Performing all target checks inside report creation prevents moderation records from becoming an oracle for private messages, grants, or attachments.
 */
export declare function requireReportTargetAccess(tx: DrizzleTransaction, input: {
    actorUserId: string;
    targetUserId?: string;
    chatId?: string;
    messageId?: string;
    fileId?: string;
}): Promise<void>;
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