@mikro-orm/core/events/EventManager.d.ts

TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, PostgreSQL and SQLite databases as well as usage with vanilla JavaScript.

import type { EntityMetadata } from '../typings.js';
import type { EventArgs, EventSubscriber, FlushEventArgs, TransactionEventArgs } from './EventSubscriber.js';
import { EventType, type TransactionEventType } from '../enums.js';
/** Manages event subscribers and dispatches entity/flush/transaction lifecycle events. */
export declare class EventManager {
    #private;
    constructor(subscribers: Iterable<EventSubscriber>);
    /** Registers an event subscriber and indexes its subscribed entities and event types. */
    registerSubscriber(subscriber: EventSubscriber): void;
    /** Returns the set of all registered event subscribers. */
    getSubscribers(): Set<EventSubscriber>;
    dispatchEvent<T extends object>(event: TransactionEventType, args: TransactionEventArgs, meta?: EntityMetadata<T>): unknown;
    dispatchEvent<T extends object>(event: EventType.onInit, args: Partial<EventArgs<T>>, meta?: EntityMetadata<T>): unknown;
    dispatchEvent<T extends object>(event: EventType, args: Partial<EventArgs<T> | FlushEventArgs>, meta?: EntityMetadata<T>): Promise<unknown>;
    /** Checks whether there are any listeners (hooks or subscribers) for the given event type and entity. */
    hasListeners<T>(event: EventType, meta: EntityMetadata<T>): boolean;
    /** Creates a new EventManager with the same set of subscribers. */
    clone(): EventManager;
    private getSubscribedEntities;
}