import { DeleteReadModelInstance } from './DeleteReadModelInstance';
import { ProjectionContext } from './ProjectionContext';
/**
 * Represents the callback for a projection on() method.
 */
export declare type ProjectionCallback<T, TEvent = any> = (readModel: T, event: TEvent, context: ProjectionContext) => T | DeleteReadModelInstance | Promise<T | DeleteReadModelInstance>;
//# sourceMappingURL=ProjectionCallback.d.ts.map