export interface DomainEvent<T = null> {
    timestamp: string;
    aggregateId: string;
    data: T | null;
}
export type DomainEventHandler<T = null, E extends DomainEvent<T> = DomainEvent<T>> = (event: E) => void | Promise<void>;
export type EventConstructorContext = {
    aggregateId: DomainEvent["aggregateId"];
};
/**
 * Base Domain Event class.
 *
 * All Domain Events MUST extend this class.
 */
export declare abstract class AbstractDomainEvent<T = null> implements DomainEvent<T> {
    readonly data: DomainEvent<T>["data"];
    readonly timestamp: DomainEvent<T>["timestamp"];
    readonly aggregateId: DomainEvent<T>["aggregateId"];
    constructor(ctx: EventConstructorContext, data?: T);
}
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