import type { DataSource } from '../DataSource';
import type { BlockedRequest } from './BlockedRequest';
import type { Chunk } from '@principia/base/Chunk';
import type { HashMap } from '@principia/base/HashMap';
import { Sequential } from './Sequential';
export declare class Parallel<R> {
    private map;
    readonly _tag = "Parallel";
    constructor(map: HashMap<DataSource<any, any>, Chunk<BlockedRequest<any>>>);
    ['++']<R1>(that: Parallel<R1>): Parallel<R & R1>;
    get isEmpty(): boolean;
    get keys(): Iterable<DataSource<R, any>>;
    get sequential(): Sequential<R>;
    get toIterable(): Iterable<readonly [DataSource<R, any>, Chunk<BlockedRequest<any>>]>;
}
export declare function empty<R>(): Parallel<R>;
export declare function from<R, A>(dataSource: DataSource<R, A>, blockedRequest: BlockedRequest<A>): Parallel<unknown>;
//# sourceMappingURL=Parallel.d.ts.map