import { Observable, type OperatorFunction } from 'rxjs';
import type { OrchModel } from '../model';
export type ValidEpicAction = null | (() => void);
export type EpicFactory<P> = (params: {
    payload$: Observable<P>;
    action: EpicAction;
    state$: ToObservableState;
}) => Observable<ValidEpicAction | ValidEpicAction[]>;
export type EpicConfig = {
    factoryToLog?: unknown;
};
export type EpicAction = {
    <P extends any[]>(func: (...params: P) => void, ...params: P): Exclude<ValidEpicAction, null>;
    map<P>(func: (payload: P) => void): OperatorFunction<P, ValidEpicAction>;
};
export type ToObservableState = <S>(model: OrchModel<S>) => Observable<S>;
export declare function epic<P = void>(model: OrchModel<any>, factory: EpicFactory<P>, config?: EpicConfig): import("..").PayloadFunc<P, void>;
//# sourceMappingURL=epic.d.ts.map