import type { PartialResponse, RouteChainEntry } from './cache.js';
export interface StreamingContext {
    readonly navGeneration: number;
    readonly currentRequestPath: string;
    readonly activeChain: RouteChainEntry[];
    readonly nonce: string;
    readonly injectedCss: Set<string>;
    setDeferredReader(reader: Promise<void> | null): void;
    setDeferredGeneration(gen: number): void;
    updateInventory(inv: string): void;
    markCacheComplete(requestPath: string): void;
}
export interface StreamingPartialResponse extends PartialResponse {
    readonly _deferredStream?: true;
    inventory?: string;
}
export declare function readStreamingPartial(resp: Response, requestPath: string, ctx: StreamingContext, signal?: AbortSignal): Promise<StreamingPartialResponse | null>;
export declare function hasDeferredStream(data: PartialResponse): data is StreamingPartialResponse;
export declare function startDeferredStream(data: PartialResponse): void;
export declare function cancelDeferredStream(data: PartialResponse): Promise<void>;
export declare function applyDeferredStates(states: (Record<string, unknown> | null)[], requestPath: string, ctx: StreamingContext): void;