import { z } from 'zod/v4';
import type { ConversationState, OutputVersion, PortOutput, SnapshotValue, SnapshotMode } from './conversationPort.js';
export declare const ConversationReadMetadataSchema: z.ZodObject<{
    transferId: z.ZodUUID;
    conversationId: z.ZodString;
    mode: z.ZodEnum<{
        delta: "delta";
        initial: "initial";
    }>;
    revision: z.ZodNumber;
    stateSequence: z.ZodNumber;
    operationId: z.ZodNullable<z.ZodUUID>;
}, z.core.$strict>;
export type ConversationReadMetadata = z.infer<typeof ConversationReadMetadataSchema>;
export interface ConversationTransferObserver {
    state(state: ConversationState, version: OutputVersion): void;
    item(item: Exclude<SnapshotValue, {
        kind: 'state';
    }>, transferId: string): void;
    remove(key: string, transferId: string): void;
    output(output: Exclude<PortOutput, {
        kind: 'snapshot';
    }>, version: OutputVersion): void;
    read(status: 'reading' | 'complete' | 'incomplete', transferId: string, mode: SnapshotMode): void;
}
export declare class ConversationTransferReceiver {
    private readonly conversationId;
    private readonly observer;
    private transfers;
    private awaitingStart;
    private snapshot;
    private revision;
    private sequence;
    private completed;
    constructor(conversationId: string, observer: ConversationTransferObserver);
    expectRead(metadata: ConversationReadMetadata): void;
    disconnect(): void;
    authenticated(): void;
    receive(value: unknown): void;
    private applyState;
}
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