export declare const TWIN_STATE_TOPIC = "twin-state";
export interface TwinStateMessageShape {
    instanceId: string;
    kind: string;
    revision?: number;
    payload?: unknown;
}
export interface TwinStatePayload {
    domainId: string;
    twinState: TwinStateMessageShape;
}
export declare function twinStatePayload(domainId: string, twinState: TwinStateMessageShape): TwinStatePayload;
/** Passes only this tenant's messages about this twin. */
export declare function twinStateFilter(domainId: string, instanceId: string): (p: TwinStatePayload | undefined) => boolean;