import type { IPubSubMessageShape } from '../channels/pubSubMessage';
export declare type IAction<T, P = void> = P extends void ? {
    type: T;
} : P extends unknown ? {
    type: T;
    payload?: unknown;
} : {
    type: T;
    payload: P;
};
export declare type IAnyAction = IAction<string, unknown>;
export declare type AnyHandler<A extends IAnyAction = IAnyAction> = (action: IPubSubMessageShape<A>) => Promise<void>;
export declare type FeatureHandler<Event extends AllEvents, AllEvents extends IAnyAction> = AnyHandler<Extract<AllEvents, Event>>;