import LRU from 'lru-cache';
import { CheerioAPI as CheerIOAPI } from 'cheerio';
export declare type Concept = {
    title: string;
    href: string;
    description: string;
};
interface CheerioAPI extends CheerIOAPI {
    exists: boolean;
}
export default class Unionpedia {
    private readonly BASE;
    private readonly CACHE;
    private readonly CACHE_OUTGOING;
    private readonly CACHE_INCOMING;
    private readonly CACHE_HTML;
    constructor(url?: string, cacheOptions?: LRU.Options<string, Concept | Concept[] | CheerioAPI>, objectCacheOptions?: LRU.Options<string, Concept>, outgoingRelationsCacheOptions?: LRU.Options<string, Concept[]>, incomingRelationsCacheOptions?: LRU.Options<string, Concept[]>, htmlCacheOptions?: LRU.Options<string, CheerioAPI>);
    private getConceptDescription;
    private getConceptTitle;
    private getLinks;
    private fetchAndParseHTML;
    private checkForValidConcept;
    getConceptObject(concept: string): Promise<Concept>;
    getOutgoingRelations(concept: string): Promise<Concept[]>;
    getIncomingRelations(concept: string): Promise<Concept[]>;
}
export {};