import type IndexProvider from '../types/IndexProvider';
import type { FlatSelector } from '../types/Selector';
import type Selector from '../types/Selector';
import type { BaseItem } from './types';
/**
 * Retrieves merged index information for a given flat selector by querying multiple
 * index providers. Combines results from all index providers to determine matched positions
 * and an optimized selector.
 * @template T - The type of the items in the collection.
 * @template I - The type of the unique identifier for the items.
 * @param indexProviders - An array of index providers to query.
 * @param selector - The flat selector used to filter items.
 * @returns An object containing:
 *   - `matched`: A boolean indicating if the selector matched any items.
 *   - `positions`: An array of matched item positions.
 *   - `optimizedSelector`: A flat selector optimized based on the index results.
 */
export declare function getMergedIndexInfo<T extends BaseItem<I> = BaseItem, I = any>(indexProviders: IndexProvider<T, I>[], selector: FlatSelector<T>): {
    matched: boolean;
    positions: number[];
    optimizedSelector: FlatSelector<T>;
};
/**
 * Retrieves index information for a given complex selector by querying multiple
 * index providers. Handles nested `$and` and `$or` conditions in the selector and
 * optimizes the selector to minimize processing overhead.
 * @template T - The type of the items in the collection.
 * @template I - The type of the unique identifier for the items.
 * @param indexProviders - An array of index providers to query.
 * @param selector - The complex selector used to filter items.
 * @returns An object containing:
 *   - `matched`: A boolean indicating if the selector matched any items.
 *   - `positions`: An array of matched item positions.
 *   - `optimizedSelector`: A selector optimized based on the index results, with unused
 *     conditions removed.
 */
export default function getIndexInfo<T extends BaseItem<I> = BaseItem, I = any>(indexProviders: IndexProvider<T, I>[], selector: Selector<T>): {
    matched: boolean;
    positions: number[];
    optimizedSelector: Selector<T>;
};