/**
 * @file Utilities for defining typed action creators and reducer handler maps without external dependencies.
 */
export type AnyAction = {
    type: string;
};
export type AnyActionCreator = {
    (...args: any[]): AnyAction;
    readonly type: string;
};
type PayloadCreator = (...args: any[]) => any;
type ActionFromPayload<Type extends string, Creator extends PayloadCreator> = ReturnType<Creator> extends undefined | void ? {
    type: Type;
} : {
    type: Type;
    payload: Exclude<ReturnType<Creator>, undefined>;
};
/**
 * Creates a typed action creator with an attached literal `type` property.
 */
export declare function createAction<Type extends string>(type: Type): (() => {
    type: Type;
}) & {
    readonly type: Type;
};
export declare function createAction<Type extends string, Creator extends PayloadCreator>(type: Type, payloadCreator: Creator): ((...args: Parameters<Creator>) => ActionFromPayload<Type, Creator>) & {
    readonly type: Type;
};
export type ActionCreatorsMap = Record<string, AnyActionCreator>;
export type ActionUnion<Creators extends ActionCreatorsMap> = ReturnType<Creators[keyof Creators]>;
export type CaseReducer<State, Action extends AnyAction, Extra> = (state: State, action: Action, extra: Extra) => State;
export type BoundActionCreators<Creators extends ActionCreatorsMap> = {
    [Key in keyof Creators]: (...args: Parameters<Creators[Key]>) => ReturnType<Creators[Key]>;
};
export declare const bindActionCreators: <Creators extends ActionCreatorsMap>(creators: Creators, dispatch: (action: ActionUnion<Creators>) => unknown) => BoundActionCreators<Creators>;
export declare const createActionHandlerMap: <State, Creators extends ActionCreatorsMap, Extra = undefined>(creators: Creators, handlers: { [Key in keyof Creators]?: CaseReducer<State, ReturnType<Creators[Key]>, Extra>; }) => Record<string, CaseReducer<State, ReturnType<Creators[keyof Creators]>, Extra>>;
export {};