import { DeliveryObservation } from './DeliveryObservation.ts';
export declare const EFFECT_SINK_INVALID_OBSERVATION_BATCH = "E_EFFECT_SINK_INVALID_OBSERVATION_BATCH";
export declare const EFFECT_SINK_INVALID_OBSERVATION = "E_EFFECT_SINK_INVALID_OBSERVATION";
export declare function requireDeliveryObservationBatch(observations: DeliveryObservation[], sinkId: string): DeliveryObservation[];
