import { ById } from './by-id';
export declare function createReducer(initialState: any, handlers: any): (state: any, action: any) => any;
export declare function reduceById<T>(array?: any[]): ById<T>;
export declare function toArray<T>(byId: ById<T>): T[];
export declare function ids(object?: any): string[];
export declare function setById<T>(state?: any, byId?: ById<T>): any;
export declare function filterById<T>(byId?: ById<T>, itemIds?: string[]): ById<T>;
export declare function filterToArrayById<T>(byId?: ById<T>, itemIds?: string[]): T[];
export declare function unique(array?: any[]): string[];
export declare function uniqueProps(array?: any[], property?: string): string[];
export declare function uniquePropsById(byId?: ById<any>, property?: string): string[];
export declare function missingIds<T>(byId?: ById<T>, objectIds?: Array<string | undefined>): (string | undefined)[];