import { DefaultRecord } from './common.js';
type Event<EventType extends string = string, EventData extends DefaultRecord = DefaultRecord, EventMetaData extends DefaultRecord | undefined = undefined> = Readonly<EventMetaData extends undefined ? {
    type: EventType;
    data: EventData;
} : {
    type: EventType;
    data: EventData;
    metadata: EventMetaData;
}> & {
    readonly kind?: 'Event';
};
export type { Event };