import { INestApplication } from '@nestjs/common';
import { HTTPInjectOptions, HTTPInjectResponse } from 'fastify';
export interface NestFastifyApplication extends INestApplication {
    /**
     * A wrapper function around native `fastify.register()` method.
     * Example `app.register(require('fastify-formbody'))`
     *
     * @returns {this}
     */
    register(...args: any[]): this;
    /**
     * Sets a base directory for public assets.
     * Example `app.useStaticAssets({ root: 'public' })`
     *
     * @returns {this}
     */
    useStaticAssets(options: {
        root: string;
        prefix?: string;
        setHeaders?: Function;
        send?: any;
    }): this;
    /**
     * Sets a view engine for templates (views), for example: `pug`, `handlebars`, or `ejs`.
     *
     * @returns {this}
     */
    setViewEngine(options: any): this;
    /**
     * A wrapper function around native `fastify.inject()` method.
     * @returns {void}
     */
    inject(opts: HTTPInjectOptions | string): Promise<HTTPInjectResponse>;
    /**
     * Starts the application.
     * @returns A Promise that, when resolved, is a reference to the underlying HttpServer.
     */
    listen(port: number, callback?: (err: Error, address: string) => void): Promise<any>;
    listen(port: number, address: string, callback?: (err: Error, address: string) => void): Promise<any>;
    listen(port: number, address: string, backlog: number, callback?: (err: Error, address: string) => void): Promise<any>;
}