RequestBlock

declare const empty: RequestBlock;

declare const mapRequestResolvers: <A>(
  self: RequestBlock,
  f: (dataSource: RequestResolver.RequestResolver<A>) => RequestResolver.RequestResolver<A>,
) => RequestBlock;

declare const parallel: (self: RequestBlock, that: RequestBlock) => RequestBlock;

declare const reduce: <Z>(self: RequestBlock, reducer: RequestBlock.Reducer<Z>) => Z;

declare const sequential: (self: RequestBlock, that: RequestBlock) => RequestBlock;

declare const single: <A>(
  dataSource: RequestResolver.RequestResolver<A>,
  blockedRequest: Request.Entry<A>,
) => RequestBlock;

interface Empty {
  readonly _tag: "Empty";
}

interface Par {
  readonly _tag: "Par";
  readonly left: RequestBlock;
  readonly right: RequestBlock;
}

type RequestBlock = Empty | Par | Seq | Single;

interface Seq {
  readonly _tag: "Seq";
  readonly left: RequestBlock;
  readonly right: RequestBlock;
}

interface Single {
  readonly _tag: "Single";
  readonly blockedRequest: Entry<unknown>;
  readonly dataSource: RequestResolver<unknown>;
}