import { AisFeed } from './contract';
export interface AisQuery {
    maxNm: number;
    maxAgeMin: number;
    limit: number;
}
export declare function buildAisFeed(vessels: unknown, selfContext: string, now: number, q: AisQuery): AisFeed;
export declare function clampAisQuery(maxNm?: number, maxAgeMin?: number, limit?: number): AisQuery;
export declare function seesOtherVessels(vessels: unknown, selfContext: string): boolean;