import { Kapp } from '..';
import { THookCallback } from './types';
/**
 * @class Manages the hooks of an app, a service, or a custom class.
 */
export declare class HooksManager<TSystem = unknown> {
    /**
     * @property Contains all the registered hooks.
     */
    private _hooks;
    /**
     * @property Contains the event emitter of this hooks manager. When a hook is executed, an event of the same name is triggered.
     */
    private _eventEmitter;
    /**
     * Creates a new hook, and initializes its callbacks list.
     * @param name The name of the new hook.
     * @throws {HookException} Thrown if the named hook already exists in this manager.
     */
    create(name: string): void;
    /**
     * Adds a callback method to the named hook.
     * @param name The name of the hook you want to add a callback.
     * @param callback The callback method to execute when the named hook is used.
     * @param order The default order of the callback. The lowest the value, the first the callback is called.
     * @throws {HookException} Thrown if the named hook doesn't exist.
     */
    add(name: string, callback: THookCallback<TSystem>, order?: number): void;
    /**
     * Adds a listener to a hook event.
     * @param name The name of the hook event to listen.
     * @param callback The method to call when the hook is executed.
     * @throws {HookException} Thrown if the named hook doesn't exist.
     */
    on(name: string, callback: (...params: unknown[]) => void): void;
    /**
     * Executes the callbacks of the named hook. Note that the callbacks are ordered ascendingly by their "order" value.
     * @param name The name of the hook to execute.
     * @param app The instance of the application.
     * @param system The instance of the Application, service or custom class that uses this hook.
     * @param data Eventual data you want to communicate to each hook callback.
     * @throws {HookException} Thrown if the named hook doesn't exist.
     */
    exec(name: string, app: Kapp, system: TSystem, data?: unknown): Promise<void>;
    /**
     * Compares the given hook callbacks infos to sort them. The lowest the order value, the first the callback is placed.
     * @param hook1
     * @param hook2
     */
    private _compareHookCallbacks;
}
export default HooksManager;