import { PrefixIndexLine } from "./utils/typs.js";
/**
 * Interface for index reading operations.
 *
 * Decouples IndexBuilder from the concrete PrefixTreeWalker implementation,
 * enabling mock-based testing and alternative implementations (e.g. BundleReader).
 */
export interface IIndexReader {
    findIndexLines(sourceName: string, field: string, value: string, filterCallback?: (indexValue: string, argValue: string) => boolean): Promise<null | PrefixIndexLine[]>;
    flatPrefixIndexLine(unflattened: PrefixIndexLine[]): PrefixIndexLine[];
    readIndexFileLines(indexPath: string, reverse: boolean): AsyncGenerator<PrefixIndexLine>;
    readForwardPrefixIndexLines(rootDir: string, pageSize?: number, cursor?: string, orderByKey?: string, isDesc?: boolean): AsyncGenerator<PrefixIndexLine>;
    readBackwardPrefixIndexLines(rootDir: string, pageSize?: number, cursor?: string, orderByKey?: string, isDesc?: boolean): AsyncGenerator<PrefixIndexLine>;
}