import { Observable } from 'rxjs';
import { ActionStream } from './ActionStream';
import { ReadModelAction } from './ReadModelAction';
export declare class SimpleActionStream<Action extends ReadModelAction = ReadModelAction> extends Observable<Action> implements ActionStream<Action> {
    private readonly events$;
    static of<Action extends ReadModelAction = ReadModelAction>(events?: Action[]): SimpleActionStream<Action>;
    constructor(events$: Observable<Action>);
    append(eventstream: ActionStream<Action>): this;
}