import { Relation } from "./relations";
export declare class RelationSet {
    private _relations;
    constructor();
    add(npcName: string, relation: Relation): void;
    append(npcName: string, relation: Relation): RelationSet;
    get knowns(): string[];
    knows(npcName: string): boolean;
    get(npcName: string): Relation;
    normalizeAll(): void;
    copy(): RelationSet;
}
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