import type { VextResponseKind } from "../types/hooks.js";
import type { VextResponse } from "../types/response.js";
import type { VextHeaders } from "../types/headers.js";
export interface ResponseSendState {
    kind: VextResponseKind;
    data?: unknown;
    status: number;
    headers: VextHeaders;
    requestId: string;
    startedAt: number;
}
type EventEmitterLike = {
    once?: (event: string, listener: (...args: unknown[]) => void) => unknown;
    off?: (event: string, listener: (...args: unknown[]) => void) => unknown;
    removeListener?: (event: string, listener: (...args: unknown[]) => void) => unknown;
    destroy?: (error?: Error) => unknown;
    destroyed?: boolean;
    writableEnded?: boolean;
    headersSent?: boolean;
    statusCode?: number;
    setHeader?: (name: string, value: number | string) => unknown;
    end?: (chunk?: string) => unknown;
    readableEnded?: boolean;
};
export declare function beginResponseSend(res: VextResponse, payload: {
    kind: VextResponseKind;
    data?: unknown;
    status: number;
    headers: VextHeaders;
    wrapped: boolean;
    requestId: string;
}): ResponseSendState;
export declare function finishResponseSend(res: VextResponse, state: ResponseSendState): void;
export declare function finishResponseSendAfterStreamSettlement(res: VextResponse, state: ResponseSendState, readable: NodeJS.ReadableStream, target?: EventEmitterLike): void;
export declare function waitForResponseSend(res: VextResponse): Promise<void>;
export {};