import { EntityId, SequenceNumber } from "../../common";
import { SubMessage } from "../SubMessage";
import { SubMessageView } from "../SubMessageView";
export declare enum HeartbeatFlags {
    Final = 2,
    Liveliness = 4
}
export declare class Heartbeat implements SubMessage {
    readerEntityId: EntityId;
    writerEntityId: EntityId;
    firstAvailableSeqNumber: SequenceNumber;
    lastSeqNumber: SequenceNumber;
    count: number;
    flags: HeartbeatFlags;
    constructor(readerEntityId: EntityId, writerEntityId: EntityId, firstAvailableSeqNumber: SequenceNumber, lastSeqNumber: SequenceNumber, count: number, flags: HeartbeatFlags);
    write(output: DataView, offset: number, littleEndian: boolean): number;
    static size(): number;
}
export declare class HeartbeatView extends SubMessageView {
    get final(): boolean;
    get liveliness(): boolean;
    get readerEntityId(): EntityId;
    get writerEntityId(): EntityId;
    get firstAvailableSeqNumber(): SequenceNumber;
    get lastSeqNumber(): SequenceNumber;
    get count(): number;
}
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