import type { FastifyInstance } from "fastify";
declare module "fastify" {
    interface FastifyInstance {
        shutdown: (signal: NodeJS.Signals | "uncaughtRejection" | "uncaughtException" | "maxMemoryThreshold") => Promise<void>;
    }
}
export type StarscreamGracefulShutdownOptions = {
    graceful: boolean;
    timeoutMS: number;
};
export declare const StarscreamGracefulShutdown: (server: FastifyInstance, options: StarscreamGracefulShutdownOptions) => Promise<void>;