/// <reference types="react" />
import { RecommendClient } from '@algolia/recommend';
import { BatchQuery } from '@algolia/recommend-core';
import { GetParametersResult, RecommendWidget } from '../RecommendContext';
type StateType<TObject> = {
    isDirty: number | null;
    cache: Record<string, TObject>;
    widgets: Array<RecommendWidget<TObject>>;
    recommendClient: RecommendClient | null;
};
type Action<TObject> = {
    type: 'register';
    widget: Omit<RecommendWidget<TObject>, 'param'>;
} | {
    type: 'unregister';
    key: string;
} | {
    type: 'request_success';
};
export declare function getCacheKey<TObject>(queries: Array<BatchQuery<TObject>>): string;
export declare function getCachedPrams<TObject>(widgets: Array<RecommendWidget<TObject>>, cache: StateType<TObject>['cache']): GetParametersResult<any>[];
export declare function getQueryKeys<TObject>(params: Array<GetParametersResult<TObject>>): {
    queries: BatchQuery<TObject>[];
    keys: import("@algolia/recommend-core").BatchKeyPair[];
};
export declare const reducer: React.Reducer<StateType<unknown>, Action<any>>;
export {};