/// <amd-module name="nova_ecs/query_cache" />
import { Either } from "fp-ts/Either";
import { ArgsToData, ArgTypes, QueryResults } from "./arg_types";
import { Entity } from "./entity";
import { EntityMapWithEvents } from "./entity_map";
import { EcsEvent } from "./events";
import { Query } from "./query";
import { ResourceMapWrapped } from "./resource_map";
import { DefaultMap } from "./utils";
import { World } from "./world";
interface QueryCacheEntry<Args extends readonly ArgTypes[] = readonly ArgTypes[]> {
    readonly valid: boolean;
    unsubscribe: () => void;
    getResultForEntity(entity: Entity, event?: readonly [EcsEvent<unknown>, unknown]): Either<undefined, ArgsToData<Args>>;
    getResult(args?: {
        entities?: Iterable<Entity>;
        event?: readonly [EcsEvent<unknown>, unknown];
    }): QueryResults<Query<Args>>;
}
declare type QueryArgsList = readonly ArgTypes[];
export declare class QueryCache extends DefaultMap<Query, QueryCacheEntry> {
    constructor(entities: EntityMapWithEvents, resources: ResourceMapWrapped, getArg: World['getArg']);
    get<Args extends QueryArgsList>(query: Query<Args>): QueryCacheEntry<Args>;
    set<Args extends QueryArgsList>(query: Query<Args>, entry: QueryCacheEntry<Args>): this;
    has<Args extends QueryArgsList>(query: Query<Args>): boolean;
    delete<Args extends QueryArgsList>(query: Query<Args>): boolean;
}
export {};